3-288-119 2026-07A,07B Addendum 1 10.23.26.pdf

L1-1 288/2026-07A,07B

ADDENDUM NO. 1

Rostraver Township

Contract Nos. 2026-07A & 2026-07B

Raw Sewage Pump Replacement Project

October 23, 2026

All prospective Bidders interested in the above construction work are herein advised of the following additions, deletions and/or modifications of the plans, specifications and Bidding

Documents:

1. MODIFICATION, SPECIFICATION SECTION 11302: Specification

Section 11302, Dry Pit Raw Sewage Pumps, has been modified to include a protective coating on the pump volutes and impellers.

2. MODIFICATION, SPECIFICATION SECTION 15100: Specification

Section 15100, Valves, has been modified to include solenoid valves and air/vacuum release valve specifications, and has been reissued.

3. MODIFICATION, DRAWING M4: Drawing M4 has been modified to include a schematic for air release valve drains and has been reissued.

All Bidders shall acknowledge receipt of this Addendum No. 1 in the space provided on the Bid Form corresponding to the appropriate Contract(s).

END OF ADDENDUM NO. 1

Rostraver Township

Contract Nos. 2026-07A & 2026-07B

Raw Sewage Pump Replacement Project

KLH Engineers, Inc

5313 Campbells Run Road

Suite 100

Pittsburgh, PA 15205

Phone: 412-494-0510

Fax: 412-494-0426

L1-2 288/2026-07A,07B

THIS PAGE LEFT INTENTIONALLY BLANK

Copyright ©2026 KLH Engineers, Inc.

All Rights Reserved Worldwide

11302-R-1

Rev. Addendum #1 288/2026-07A, 07B

SECTION 11302-R

DRY PIT RAW SEWAGE PUMPS

PART 1: GENERAL

1.01 DESCRIPTION

A. Under Contract 2026-07A, the CONTRACTOR shall furnish and install four (4) raw sewage dry pit solids handling pumps complete with all appurtenances, and accessories as will be required to produce complete and workable installations, as shown on the plans and specified. All pumps shall be installed and tested to demonstrate satisfactory operation. The pump control systems, instrumentation and control panels shall be furnished under Contract 2026-07B as specified in

Division 16. All relays or other devices that may be used with thermal and moisture switches shall be provided by the pump manufacturer for installation inside the motor control center (MCC-400). Wiring to those devices shall be by the CONTRACTOR.

B. The pump shall be specifically designed to pump waste solids at heavy consistencies without plugging or dewatering of the solids.

1.02 REFERENCES NEEDED BY MANUFACTURER

A. The following examples illustrate where references are needed by the manufacturers to assist the CONTRACTOR in meeting all Contract requirements. Other specific requirements will exist.

1. Drawings are needed to ensure the equipment does not exceed space allocated.

2. Division 1 is needed for information on motors, shop drawings and maintenance manuals.

3. Division 9, except as otherwise specified herein, is needed for primers, painting and coatings. All equipment will be given a final paint coat in the field.

11302-R-2

4. Unless otherwise noted within this Section, the warranty shall be in accordance with Section

11300, Wastewater Treatment Equipment.

5. Motors shall be in accordance with Section 11301, Electric Motors.

6. Division 15, except as otherwise specified herein, is needed for piping, valves, headroom clearances, valve accessibility, pressure gauge installation, etc.

7. Instrumentation work, except as otherwise specified herein, is included in Division 16 -

Electrical.

8. Electrical work, except as otherwise specified herein, is included in Division 16 - Electrical.

1.03 QUALITY ASSURANCE

A. All pumping equipment furnished under this Section shall be of a design and manufacture that has been used in similar applications, and it shall be demonstrated to the satisfaction of the Owner that the quality is equal to equipment made by that manufacturer specifically named herein. Manufacturers shall provide evidence of at least five (5) installations in which identically sized equipment has provided satisfactory performance for a minimum of five (5) years in a similar application. No consideration will be given to an individually sized pump that hasn't been commercially available for five (5) years.

B. To insure a consistent high standard of quality, the manufacturer of this pumping equipment shall comply with the requirements of the ISO 9001 Quality, and such compliance shall be verified by an independent certification agency approved by the International

Organization for Standardization. Documentation shall be submitted for approval showing compliance with this requirement, and the equipment will not be released for shipment until approved.

C. The centrifugal pump, complete with motor, base, and all other specified accessories and appurtenances shall be furnished by the pump manufacturer to ensure

11302-R-3 compatibility and integrity of the individual components and provide the specified warranty for all components.

The pump manufacturer shall accept unit responsibility for each pump complete assembly.

D. All equipment shall be procured via a purchase agreement between the contractor and the equipment manufacturer.

Resale units shall not be accepted.

1.04 SUBMITTALS

A. Data to be submitted:

1. The CONTRACTOR shall submit pump curves for the units which he proposes to supply, showing Total

Dynamic Head, Pump Efficiency, Brake Horsepower, Power Input to Electric Drive Motor of Pumping

Unit for the various conditions under which the units are to operate along with descriptive data and specifications describing in detail the construction of the complete units.

2. The manufacturer shall have a minimum of five installations of the exact combination of pump and motor model proposed to be furnished for this project. Installations must be in operation for a minimum of five years and shall list the pump model, motor model and horsepower, date of installation, duty point, and contact information including telephone number. A list of these installations shall be furnished to the ENGINEER with submittals.

B. Dimensional Data:

1. The successful bidder shall submit to the

ENGINEER for approval, shop drawings, showing all weights and dimensions necessary for the installation of the pumps.

PART 2: PRODUCTS

2.01 MANUFACTURER

A. Manufacturer:

11302-R-4

1. The equipment specified herein and identified on the contract drawings is equivalent to Vertical

Non-Clog Dry Pit Pump, Serial Number 260625, manufactured by Pentair Fairbanks Nijhuis and shall be utilized as the base bid equipment for alternate bids.

2. Pumps considered or equal shall be considered acceptable alternate equipment provided all terms of these specifications are met.

B. Pump Performance:

1. All openings in pump impeller and volute case to be large enough to pass a 3" diameter sphere.

The discharge flange shall be three (3) inch standard.

2. Each pump shall be capable of the following performance:

a. Raw Sewage Pumps 1 through 4

1) Base Model B5413

2) Primary Design Point

Single Pump Duty Point:

Flow: 1160 gpm

Head: 42 ft TDH

3) Pump Speed: 1185 rpm

4) Motor HP: 25 HP

5) Voltage/Phase/Hz: 460/3/60

6) NPSH required 8.69 ft

7) Shutoff Head: 62.09 ft

8) Efficiency at Duty Point: 80.54 %

9) Minimum Impeller Diameter 11.44 in

10) Impeller Type 2-vane

11) Pump Suction 6.0 in

12) Pump Discharge 8.0 in

13) Pump Shafting 42 in

14) Mechanical Seal Chesterton 442

15) Seal Water System required

2.02 PUMP CONSTRUCTION

A. General

1. The sewage pumping units shall be vertical, non-clogging, centrifugal sewage pumps with bottom inlet and side discharge. Each pump shall

11302-R-5 include a TEFC motor, bearings, anchor bolts and all accessories specified herein.

2. Pump shall be equipped with a nameplate, stating the unit is accepted for use in Standard Location or NEC class I, division 1, groups C, D hazardous locations with third party approval.

B. Impeller

1. Impeller shall be balanced to match its constant velocity equalizing pressure volute and be made of close-grained cast iron conforming to ASTM A48

CL30. It shall be one-piece constructed, single suction, enclosed two-vane, radial flow design.

The well-rounded leading vanes then taper toward the trailing edge for a circular flow pattern to prevent the accumulation of solids and stringy material.

2. The impeller shall be secured to the shaft by a bolt, washer, and key. The impeller cannot be loosened from torque in either forward or reverse rotation.

3. Wiper vanes on the back impeller shroud shall not be acceptable.

4. Impeller shall be trimmed to specifically meet the condition of operation.

5. Impeller shall be coated with a Belzona protective coating, or equal, by the manufacturer.

C. Volute/Casing:

1. Thick walled volute shall be made of close-grained cast iron conforming to ASTM A48, Class

30. It shall be one-piece, constant velocity equalizing pressure with smooth fluid passages large enough to pass any size solid that can pass through the impeller.

2. The volute shall be centerline discharge with minimum 6” diameter as measured on the inside diameter of the discharge flange opening. The

11302-R-6 volute shall be furnished with large cleanout openings located at the impeller centerline, to allow access to the impeller. The casing shall be designated to permit the removal of the rotating assembly without disturbing the suction or discharge piping. The casing shall be hydrostatically tested to 1.5 times the design head or 1.25 times the shutoff head whichever is greater.

3. A sliding bracket assembly shall be constructed so that when lowered to the discharge base/elbow, the knifing action of the vertical metal-to-metal seal provides a self-cleaning, non-sparking UL

Listed hazardous location assembly.

4. The volute shall be coated with a Belzona protective coating, or equal, by the manufacturer.

D. Wear Rings

1. Wear rings shall be provided on both the impeller and fronthead so that clearances can be maintained throughout the life of the rings and minimize recirculation.

2. Impeller wear rings shall be of the axial- or face-type and attached using an interference fit and Loctite.

3. Wear rings shall be stainless steel.

4. Wear ring clearance adjustment shall be achieved through impeller adjustment shims.

2.03 MOTOR

A. Pump shall be driven by an electric TEFC motor. The motor nameplate horsepower rating shall exceed the brake horsepower requirements of the specified head and capacity conditions.

B. The stator winding and lead shall be insulated with moisture-resistant Class F insulation for continuous duty in 40° C. The motor shall be designed for continuous duty capable of ten starts per hour.

11302-R-7

Automatic reset normally closed thermal overloads shall be imbedded in the motor winding to provide overheating protection. Motor winding thermostats must be connected to an electric controller per local and state codes and the NEC.

C. Motor shaft shall be a one-piece 416 stainless steel construction. Carbon steel shafts or shaft sleeves are not acceptable. Rotor is to be dynamically balanced to meet NEMA vibration limits. All external hardware is to be stainless steel.

D. Cable leads are to enter at the top of the motor and allow the cable-to-motor connection to be accomplished in the field without soldering. All power and control lead wires are to be double sealed as it enters the motor to prevent cable-wicking. Sealing system shall consist of a rubber grommet followed by epoxy that is high in adhesive qualities and a low coefficient of expansion. Each cable wire will have a small section of insulation removed to establish an area of bare wire and will be untwisted and surrounded by epoxy potting material. Cable sealing system shall be capable of withstanding an external pressure test of

1200 psi and a cable assembly pull test as required by

UL. Singular grommet or other similar sealing systems are not acceptable. Motor shall be supplied with 50 feet of multi-conductor type “SOW-A” or “W” power cable and control cable. Cable sizing shall conform to NEC specifications and be UL Listed.

E. Power and control leads shall be terminated on a terminal board. The terminal board and its bronze lugs shall be O-ring sealed.

2.04 SHAFT SEAL ARRANGEMENT

A. Pump shall be provided with a John Crane Split mechanical seal 442, or equal. Seal water shall be supplied to the seal in accordance with Section 11302.

B. Seal materials for seal shall be stainless steel and nitrile components with carbon rotating faces and ceramic stationary faces lapped to within 3 helium light bands. Use of mechanical seals utilizing single or multiple metal springs that may collect stringy material are not acceptable.

11302-R-8

2.05 ACCESSORIES

A. Base

1. The installation shall include a rigid discharge base-elbow with pump mounting stand.

2. The base mounting stand is to be bolted directly to the concrete equipment pad with the 90° elbow having a 125 lb. ANSI flange discharging vertically.

B. Fits and Hardware

1. All machined bolts, nuts and capscrews shall be stainless steel and hex-head type and will not require the use of any special tools.

2.06 STAINLESS STEEL NAMEPLATE

A. A stainless-steel nameplate shall be attached to the pump giving the manufacturer’s model and serial number, rated capacity, head, speed, and all pertinent data.

2.07 SHOP PAINTING

A. The pump shall be solvent washed and coated with a single coat of Tnemec 431 epoxy applied at 5 MDFT minimum (except motor) that shall provide corrosion and chemical protection. Solvent wash and a. L. Optional

Surface Preparation.

PART 3: EXECUTION

3.01 OPERATION AND CONTROL

A. In general, the pump operation shall be ON/OFF as dictated by the wet well levels monitored by the level sensing transducers using up to three (3) units in service and one (1) in standby. Pump starts shall be alternating while alternating which unit is in standby. Should a pump be called for service and not respond, the unit in standby shall be called to service. In the event of any pump failure alarms shall be imitated through the SCADA system to alert the need for attention.

11302-R-9

B. All controls and instrumentation to accomplish the general operation description in Section 3.01-A shall be supplied under Contract 2026-07 and in accordance with Division 16 of these Contract Documents.

3.02 FIELD REPRESENTATIVE’S SERVICES

A. The equipment manufacturer shall furnish a qualified field service representative for the purpose of inspecting the equipment after installation and to supervise its initial operation. The manufacturer’s representative shall inspect the installation and shall provide a written certification that the pump is installed and operating in accordance with the manufacturer’s requirements. In addition to the time required to verify pump installation the following shall be provided:

1. 1 4-hour man-day for the training/classroom services

2. 2 man-days for start-up

3.03 INSTALLATION

A. Install all items in accordance with the printed instructions of the manufacturer, as indicated and specified.

3.04 ACCEPTANCE TESTS

A. Factory Testing

1. A certified factory performance test shall be performed on each pump in accordance with the

Hydraulic Institute Standards. Tests shall be sufficient to determine the curves of head, input horsepower and efficiency relative to capacity from shutoff to 150% of design flow. A minimum of six points, including shutoff, shall be taken for each test. At least one point of the six shall be taken as near as possible to each specified condition. Results of the performance tests shall be certified by a Registered

Professional Engineer and submitted for approval before final shipment.

11302-R-10

B. Field Testing

1. The CONTRACTOR shall furnish labor, piping, equipment, and material for conducting the tests.

2. After the installation of the pumps, controls, and all appurtenances, and when construction of other units of the pump station, will permit each complete pumping unit will be subject to field tests as specified herein under actual operating conditions.

a. The field tests shall be made by the

CONTRACTOR under the direct supervision of a qualified factory trained representative, and in the presence of, and as directed by the ENGINEER. The CONTRACTOR shall provide, calibrate, and install all temporary gauges and meters, shall make necessary tapped holes in the pipes, and install all temporary piping and wiring required for the field tests.

b. The pump manufacturer shall demonstrate that each pump furnished shall pass a minimum 3-inch non-deformable sphere through a field test of the pump impeller clearance. The test shall be a static test with the pump in an OFF status and disconnected from the electrical power service. With the pump held aloft by its chain to the pump station hoist or crane, the pump manufacturer’s field technician shall place a hard nominal

3-inch sphere into the pump discharge and through turning the impeller by hand;

demonstrate the solids passage through the sphere exiting the bottom pump suction.

c. Should the pump not pass the free passage test, then the equipment shall be rejected and no compensation for the equipment shall be allowed until the equipment is replaced with equipment of differing manufacture that passes the free passage test.

3. The field tests shall determine the head, discharge flow and overall efficiency

11302-R-11 characteristics of each pumping unit and in addition, shall demonstrate that under all conditions of operation each unit:

a. Has not been damaged by transportation or installation.

b. Has been properly installed.

c. Has no mechanical defect.

d. Is in proper alignment.

e. Has been properly connected.

f. Is free of overheating of any parts.

g. Is free of all-objectionable vibration and noise.

h. Is free of overloading of any parts.

4. Correct all defects or replace defective equipment, revealed, and noted during tests.

Make necessary adjustments at the time of tests at the expense of contractor.

5. Repeat tests if necessary to obtain results acceptable to OWNER.

3.05 WARRANTY

A. The equipment manufacturer shall guarantee for a period of eighteen (18) months from date of substantial completion that the equipment supplied is free from defects in materials or workmanship and will meet the specified performance requirements when operated in accordance with the manufacturer’s recommendations.

B. The Pump Manufacturer shall submit a performance affidavit for equipment to be furnished in accordance with this section. In the performance affidavit, the manufacturer must certify to the Contractor and the

Owner, that the Contract Documents have been examined, and that the equipment will meet in every way the performance requirements set forth in the Contract

Documents for the application specified. The performance affidavit must be signed by an officer of the company manufacturing the equipment and witnessed by a notary public. The performance affidavit must include a statement that the equipment will not clog or bind on solids typically found in the application set forth.

11302-R-12

C. Planned Maintenance Program

1. In addition to the One (1) Year manufacturer’s standard warranty, the equipment shall include a

Three (3) Year Planned Maintenance Program (PMP)

Service Agreement included with the purchase of the equipment. The inspection service will be administered by the local Factory Authorized

Repair Facility which has sole responsibility for execution.

2. The PMP inspection service shall be performed by the local Factory Authorized Repair Facility.

The Factory Authorized Repair facility shall offer 24/7 service capability and a formal PMP inspection service program that includes planned visits with documentation and a report issued to the owner within one week of the planned maintenance visit. The report will detail all findings, including any recommended repairs that are necessary outside the scope of this program and include a quote for any such recommended repairs.

3. The pump manufacturer shall have a local factory authorized repair facility located within 50 miles of the pump installation. The pump repair facility shall have the ability to troubleshoot, repair and test the pumps using state-of-the-art equipment. A Toll-Free number for the local

Factory Authorized Repair Facility 24/7 Service

Hotline shall be provided to the owner during start-up.

End of Section

15100R-1

SECTION 15100-R

VALVES

PART 1: GENERAL

1.01 WORK INCLUDED

A. Provide all valves as specified herein and as shown on the drawings. Submit for approval by the OWNER, a schedule of all valves indicating the service, size, and connections, make, model number and any special features such as chain wheel operators, etc.

B. All packing, gaskets, discs, seats, diaphragms, lubricants, etc., shall conform to recommendations of the valve manufacturer for the intended service.

C. Valves shall be installed with the stems positioned in the horizontal or above the centerlines of the pipe unless otherwise noted on the contract drawings.

Operators shall be positioned so that they do not interfere with pedestrian traffic. In passageways or above platforms, the minimum clearance between the floor and the lowest protruding point on the valve or operator shall be 6'-8". All valves shall be accessible for operation, maintenance, or removal. Valves shall be arranged to open counterclockwise by handwheel or lever operation unless otherwise indicated in these

Specifications. Valve operators which are 7'-0" or more above the operating floor or platform or that are noted on the contract drawings shall be chain wheel operated.

Where necessary for operations as described above, valves shall be bevel or spur gear operated.

D. Provide to the OWNER, one operating wrench for every 10 valves of each type (but not less than two wrenches per type), not equipped with handwheels or levers.

E. All valves shall be manufacturer's standard of the design which the manufacturer recommends for the service intended. Each valve shall bear the maker's name or trademark or reference symbol to indicate the service conditions for which it is guaranteed. All valves for use with copper tubing shall have solder type connections. All screw end valves shall be threaded according to the American Standard for Pipe Threads No.

15100R-2

B2.1. Flange end valves shall have connecting end flanges in accordance with the B16.1, Class 125 Series of the American Standards Association for type valves covered in the Standard, and in accordance with the

Manufacturer's Standardization Society Standard Prac-tice for bronze valves corresponding to the maximum pressure and service for which the valve is to be used.

PART 2: PRODUCTS

2.01 GENERAL VALVE LISTING

A. Swing Check Valves

1. Swing check valves shall have flanged ends and be manufactured from gray iron meeting or exceeding

ASTM A126 Grade B. Valves shall comply with

ANSI/AWWA C508, latest revision and NSF-61 approved.

2. Valves shall be designed to permit a clear waterway opening for utilization of pipeline cleaning apparatus. Disassembly of valve internals shall require no special tools other than standard socket wrenches.

3. Clapper arm shall be made of ductile iron conforming to ASTM A536 Grade 65-45-12. The disc shall not contact the body when the valve is in the full open position. Check valve shaft shall be stainless steel with corrosion-resistant bearings provided at each end. Shaft and bearings shall be completely replaceable with valve remaining in the pipeline. A double O-ring seal fully contained within the shaft bearing shall be provided.

4. Valves shall be fitted with outside lever and weight and shall be suitable for installation either in the horizontal or vertical. Different lever orientation shall be possible in the field in increments of 45 degrees without shaft modifications or extra drilling.

5. Check valve seating surfaces shall be bronze. The mating seat in the valve body shall be field removable and replaceable without removing the valve from the pipeline.

15100R-3

6. Check valves to have all internal ferrous surfaces coated with a NSF -61 approved coating.

7. Check valves shall be Series 50-SC as manufactured by American Flow Control, Birmingham, AL; or OWNER approved equal, M&H Valve Company Anniston, AL. USA or equal.

B. Plug Valves

1. Plug valves shall be furnished as indicated on the contract drawings. Plug valves shall be quarter-turn, non-lubricated, eccentric type with resilient faced plug for wastewater service with pressure up to 175 psig. Eccentric Plug Valves shall be Series

5800R (Flanged) as manufactured by Val-Matic Valve

& Manufacturing Corporation, Elmhurst, IL. USA, or

M&H Valve Company, Anniston, AL. USA, or equal.

2. The valve body and cover shall be constructed of

ASTM A126 Class B cast iron for working pressures up to 175 psig. The words “SEAT END” shall be cast on the exterior of the body seat end. The plug shall be of one-piece construction and made of ASTM

A126 class B cast iron with a resilient facing per

ASTM D2000-BG and ANSI/AWWA C504 requirements.

Radial bearings shall be constructed of self-lubricating Type 316 stainless steel. The top thrust bearing shall be Teflon. The bottom thrust bearing shall be Type 316 stainless steel. Cover bolts shall be corrosion resistant with zinc plating. Valves shall have flanges with drilling to

ANSI B16.1, Class 125.

3. The valve closing member should rotate approximately 90 degrees from the full-open to full-closed position. Port areas of not less than

85% or pipe area shall be provided on valves. The valve seat shall be a welded overlay or 99% pure nickel applied directly to the body on a pre-machined, cast seating surface and machined to a smooth surface. Shaft seals shall conform to

ANSI/AWWA C504 and consist of V-type packing in a fixed gland with an adjustable follower designed to prevent over compression of the packing and to meet design parameters of the packing manufacturer.

Permanently lubricated, shaft bearings shall be

15100R-4 supplied in the upper and lower bearing journals.

Thrust bearings shall be provided in the upper and lower journal areas. Both the packing and the bearings in the upper and lower journals shall be protected by a Grit-GuardTM shaft seal located on the valve shaft to minimize the entrance of grit into the bearing journals and the shaft seal areas.

4. All 4” and above valves shall be supplied with totally enclosed and sealed worm gear actuator with position indicator and externally adjustable open and closed stops. The worm segment gear shall be

ASTM A536 Grade 65-45-12 ductile iron with a precision bore and keyway for connection to the valve shaft. Bronze radial bearings shall be provided for the segment gear and worm shaft. Alloy steel roller thrust bearings shall be provided for the hardened worm. All gear actuators shall be designed to withstand, without damage, a rim pull of 200 lb. on hand wheel.

5. Manually operated valves shall have worm gear type actuators with hand wheels, 2” square nuts, or chain wheels attached.

6. Valves shall be marked with the Serial Number, Manufacturer, Size, Cold working pressure (CWP), and the Direct and Reverse Actuator Pressure Ratings on a corrosion resistant nameplate. The exterior of the valve shall be coated with a universal primer.

7. The valves shall be proof of design tested in accordance with ANSI/AWWA C504. When requested, the manufacture shall provide test certificates.

8. Valves for wastewater and sludge service shall be installed such that the plug rotates about the stem in a horizontal axis.

C. Solenoid Valve

1. The valves shall either be as manufactured by

Automatic Switch Company, Florham Park, New Jersey, or by Contromatics Corporation, Rockville, CT. The solenoids shall be the junction box type and operable on 115 volt, 60 Hz, single phase current.

15100R-5

D. Combination Sewage Air Relief Valves

1. The combination air valve shall consist of a large orifice and a small orifice housed in a single body.

The large orifice shall vent air and sewage gas during the filling of a pipeline or system and automatically close when liquid rises in the valve.

The small orifice shall automatically open as often as necessary to release small amounts of accumulated air and sewage gas while the system is pressurized. The large orifice shall re-open to admit air during draining or a negative pressure condition. The valve shall have an elongated body not less than 20” (508mm) tall suitable for use with sewage, wastewater or other “dirty” fluids and be of the float operated, compound lever type with an adjustable seat.

2. The valve’s large orifice diameter shall be no less than the nominal size of the valve as shown on the plans and/or in the valve schedule. Valves 3”

(80mm) and smaller shall have NPT inlet and outlet connections and 1” (25mm) size valves shall have a

2” (50mm) inlet connection (2” x 1”) to minimize plugging. Sizes 4” (100mm) and 6” (150mm) shall have a flanged inlet and NPT outlet connections.

The small orifice shall be suitable for working pressures up to 150 PSI (1,034 KPa)

3. There shall be three additional plugged NPT cleanout connection near the bottom and plugged ½”

NPT connections near the top and a 1” NPT connection near the bottom for testing, draining and/or the installation of back flushing accessories.

4. The valve body and cover shall be rated for 200 PSI

(1,379 KPa), made from cast iron conforming to ASTM

A126 Class B and shall be shop coated with enamel primer. The float ball, internal trim and linkage mechanism shall be made from Type 316 stainless steel. The seat shall be replaceable and made from

Buna-N rubber or other suitable elastomer compounds.

5. The air release valve shall be supplied with back flushing accessories consisting of a bronze ball valve for inlet isolation, a 1” ball valve for draining and a ½” ball valve for flushing, quick

15100R-6 connect couplings and a minimum of 5 ft. (1,5 meters) of rubber hose.

6. Valves shall be equivalent to Valmatic 801A Single

Body Combination Air Valve with back flushing accessories.

PART 3: EXECUTION

A. Not Used.

End of Section

RAW SEWAGE

PUMP #1

RAW SEWAGE

PUMP #2

RAW SEWAGE

PUMP #3

RAW SEWAGE

PUMP #4

M 6-

A

M 6-

B

M 6-

A

M 6-

B

M6-C M6-C

SEAL

WATER

SYSTEM

RAW SEWAGE

PUMP #1

RAW SEWAGE

PUMP #2

RAW SEWAGE

PUMP #3

RAW SEWAGE

PUMP #4

M 6-

A

M 6-

B

M 6-

A

M 6-

B

M6-C

M6-C

6 4

TO 2" AIR

RELEASE VALVE

(TYP. OF 4)

SEAL

WATER

SYSTEM

PIPE DESCRIPTIONSYMBOL

1 10"x6" D.I. REDUCING 90° BEND

14"x8" D.I. ECCENTRIC REDUCER

10" PLUG VALVE

10" D.I. 45° BEND

14" PLUG VALVE

10" D.I. 90° BEND

10" D.I. SPOOL PIPE

10" CHECK VALVE

1 1 4 " SOLENOID VALVE (TYP.)

TO

R

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DUPLEX

SEAL WATER

SYSTEM

1 1 4 " TO DRAIN

1 1 4 " SCH. 80 PVC

1 1 4 " EFFLUENT WATER

CONNECTION

1 1 4 " PLUG VALVE VALVE (TYP.)

1" S

CH

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1" S

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C

1" S

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1" S

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1" SCH.40 PVC

1' SCH.40 PVC

TEE (TYP.)

1' SCH.40 PVC

90° BEND (TYP.)AIR RELEASE

VALVE (TYP. OF 4)

2" WALL PENETRATION

TO BE CORE DRILLED

(TYP. OF 4)

2" D.I. INLET

(TYP.)

EXTEND DISCHARGE

TO EXISTING SUMP PIT

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OPERATIONS BUILDING BASEMENT

PROPOSED PLAN M4-A @ EL. 761.00

SCALE: 1/4" = 1'-0"

SCALE: 1/4" = 1'-0"

4' 8'04'

Order No.

Drawing No.

Sheet No.

of 12Copyright © 2026 KLH Engineers, Inc., All Rights Reserved Worldwide

ITEMS IDENTIFIED WITH UPPER CASE TEXT ARE PROPOSED.

NOTE:

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D at e R ev is io ns

D es ig ne d B y:

C he ck ed B y:

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OPERATIONS BUILDING BASEMENT

PROPOSED PLAN M4-B @ EL. 765.00

SCALE: 1/4" = 1'-0"

NOTES:

1. ELEVATIONS LISTED ARE FROM EXISTING RECORD

DRAWINGS. ALL ELEVATIONS ARE PROVIDED AS

REFERENCE ONLY. CONTRACTOR SHALL COMPLETE HIS

OWN MEASUREMENTS AND DETERMINATIONS TO ENSURE

ALL PUMPS, PIPE, FITTINGS, VALVES, ETC. REPLACED IN

KIND FIT TO EXISTING CONNECTION POINTS.

2. CONTRACTOR SHALL BE RESPONSIBLE FOR DESIGN AND

INSTALLATION OF ALL PIPING SUPPORTS AS REQUIRED

TO SUPPORT THE PIPING SYSTEM AND CONTROL PIPING

SYSTEM VIBRATIONS IN ACCORDANCE WITH PIPING

MANUFACTURER RECOMMENDATIONS AND AS REQUIRED

TO ENSURE A STRUCTURALLY SOUND AND STABLE

INSTALLATION. CONTRACTOR SHALL BE RESPONSIBLE TO

ADDRESS ANY QUESTIONS OR CONCERNS WITH THE

ENGINEER PRIOR TO SYSTEM TESTING AND STARTUP. IN

NO CASE SHALL THE CONTRACTOR PROCEED WITH

STARTUP OF EQUIPMENT IF THERE ARE CONCERNS WITH

PIPING SYSTEM SUPPORTS. IF IT IS DETERMINED BY THE

ENGINEER DURING OR AFTER STARTUP THAT PIPING

SUPPORTS ARE INSUFFICIENT, THEN THE CONTRACTOR

SHALL ADD ADDITIONAL SUPPORTS AT THEIR EXPENSE.

RAW SEWAGE PUMP SEAL

WATER SCHEMATIC M4-C

NOT TO SCALE

AIR RELEASE VALVE

DRAIN SCHEMATIC M4-D

NOT TO SCALE

/2

A dd en du m N o.

AutoCAD SHX Text F.D.

AutoCAD SHX Text F.D.

AutoCAD SHX Text Finish Floor El.758.33

AutoCAD SHX Text Concrete Curb Sump Pit

AutoCAD SHX Text Sump Pump

AutoCAD SHX Text 4" D.I. Sump Pump Discharge

AutoCAD SHX Text Wet Well

AutoCAD SHX Text Effluent Water Hydropnuematic Tank

AutoCAD SHX Text 4" Plug Valve

AutoCAD SHX Text Effluent Water Pump No.1

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AutoCAD SHX Text El.759.50 4" Discharge

AutoCAD SHX Text 6" D.I.

AutoCAD SHX Text 6" D.I.

AutoCAD SHX Text 6" D.I. Effluent Water Pump Suction

AutoCAD SHX Text 6" Plug Valve

AutoCAD SHX Text 4" D.I.

AutoCAD SHX Text 14" D.I.

AutoCAD SHX Text El.759.50

AutoCAD SHX Text El.759.50

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AutoCAD SHX Text Effluent Water Pump Control Panel

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AutoCAD SHX Text Finish Floor El.758.33

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AutoCAD SHX Text El.759.50 14" D.I.

AutoCAD SHX Text El.759.50 14" D.I.

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AutoCAD SHX Text 12" D.I.

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AutoCAD SHX Text Items Identified with Mixed Case Text are Existing.

AutoCAD SHX Text S:\Active Clients\288 Rostraver Township Sewage Authority\288-119 Raw Sewage Pumps\Dwg\M288-119-004.dwg 10/20/2026 11:54 AM Plotted By: Jason Antitomas 10/20/2026 11:54 AM Plotted By: Jason Antitomas10/20/2026 11:54 AM Plotted By: Jason Antitomas Plotted By: Jason AntitomasJason Antitomas