4-26-0065 Specs.pdf

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Bid Request No. 26-0065 Specifications for the Purchase of a South Reservoir Fill Valve

1.0 Intent

It is the intent of these specifications to provide for the purchase of one (1) 12-inch valve assembly consisting of an assembled 12-inch plunger valve, gearbox, and electric actuator.

The City reserves the right to reject any or all bids or any part thereof, and to waive any minor technicalities. A contract will be awarded to the bidder submitting the lowest responsible bid meeting the requirements of these specifications.

2.0 Interpretations

In order to be fair to all bidders, no oral interpretations will be given to any bidder as to the meaning of the specification documents or any part thereof. Every request for such consideration shall be made in writing to the City Purchasing Division. Based upon such inquiry, the City may choose to issue an Addendum.

3.0 General

The specifications herein state the minimum requirements of the City. All bids must be regular in every respect. Unauthorized conditions, limitations, or provisional shall be causes for rejection. The City will consider as “irregular” or “nonresponsive” any bid not prepared and submitted in accordance with the bid document and specification, or any bid lacking sufficient technical literature to enable the City to make reasonable determination of compliance to the specification.

4.0 General Conditions

• All equipment, options, and features provided must be designed, constructed, and installed to be fully suitable for their intended use and service. All components must be new.

• The bidder shall not remove any standard equipment from the machine supplied under this contract.

• Bidders are required to state exactly what they intend to furnish; otherwise, it is fully understood that they shall furnish all items, as stated.

• The valve and actuator to be furnished by offeror will be placed at the South reservoir in the City of Sioux Falls.

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• The manufacturer of the plunger valve and electric actuator must be in the business of manufacturing valves and actuators of comparable size and type, as specified in these specifications for a minimum of five (5) years.

Technical Specifications

1.01 General

The plunger valve shall include all standard features, as advertised, plus all optional features as specified:

It is the intent and purpose of these specifications to describe the plunger valve in sufficient detail to secure bids on comparable equipment. All parts, which are necessary in order to provide a complete unit and ready for operation, shall be included in the bid and shall conform in strength, quality of workmanship, and material to that which is usually provided the trade-in general. Any variance from the specifications or standards of quality must be clearly pointed out in writing by the bidder.

A. Bidders must submit with their bids the newest descriptive literature for the valve that is being bid. This literature must provide complete specifications on the machine and its attached equipment.

2.01 Plunger Valves

A. Performance Requirements

1. The plunger valves will be used to reduce the downstream pressure, control cavitation, and control the flow of water discharge into ground storage reservoir.

2. Plunger valve shall be designed to operate throughout the flow ranges and under the conditions of service specified without damaging cavitation, excessive noise, or vibration of the valve and adjacent piping.

3. Valve performance shall be demonstrated by manufacturer’s published data, test results, or documental installation or comparable applications.

B. Flow Conditions:

Valve Size (inches) 12 Minimum Flow Rate (MGD) 0 Maximum Flow Rate (MGD) 10 Upstream Pressure (PSI) 110 Downstream Pressure (PSI) 1

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C. Operating Requirements

1. Valve shall be a plunger-type or equivalent axial-flow control valve designed for pressure reduction and cavitation control in water service.

2. Valve shall incorporate internal flow-guiding geometry that progressively regulates flow area and directs cavitation away from sealing and structural components.

3. The throttling element shall move axially to regulate flow through an annular or equivalent flow path.

4. Valve design shall provide stable operation over the specified flow range, with usable modulation occurring between approximately 10% and 80% of total valve stroke.

5. Valve shall include a resilient sealing system that provides tight shutoff at the closed position while minimizing wear during modulating operation.

6. Valve shaft and actuation components shall be isolated from the waterway and sealed to prevent corrosion, leakage, or water entrapment.

7. Valve shall include internal guides or supports sufficient to maintain alignment of moving components and minimize vibration under all operating conditions.

D. Design Features

1. Valve internal geometry shall provide controlled acceleration of flow from inlet to outlet without producing damaging cavitation

2. Valve shall regulate flow in a linear or near-linear relationship between valve position and flow rate.

3. Internal throttling components shall be designed to control the location and intensity of cavitation within the valve body.

4. Valve shall be designed to operate without excessive vibration or noise transmitted to adjacent piping or structures

5. The Plunger valve shall have an even number of guide rails spaced for maximum support of the plunger assembly when in motion and at rest.

A minimum of four plunger guide rails shall be supplied and be provided with a bronze welded overlay applied directly on the body to fully and properly support the control piston mechanism and reduce the possibility of operational vibration.

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6. The design of the annular throat cross section in any position of the plunger shall ensure linear regulation of flow. Flow orifices shall be designed to meet variable flow characteristics within the flow and pressure ranges indicated.

7. The plunger valve shall be provided with a horizontal valve shaft orientation. Lifting lugs shall be provided by the valve manufacturer.

8. Valves shall be double flanged with ANSI Class 125 flanges. Flanges shall be flat faced and finished to true plane surfaces within a tolerance limit of 0.005 inch. The finished face shall be normal to the longitudinal valve axis within a maximum angular variation tolerance of 0.002 inch per foot of flange diameter. Flanges shall be drilled and spot faced per ANSI B16.1, Class 125. The degree of smoothness of the flange faces shall be 125 RMS.

9. Valves shall be provided with protective lining and coatings conforming to AWWA C550.

a. Coating and lining shall be fusion-bonded epoxy in accordance with AWWA C550 requirements.

b. All ductile iron and carbon steel components shall be painted with Fusion Epoxy 10 mils minimum.

10. Valve Identification. The country of origin of all castings and an identifying serial number shall be stamped on a corrosion-resistant plate attached to the valve body.

11. A certificate of compliance shall be furnished with each valve stating that the materials supplied meet the material specification set out herein and the manufacturer’s quality assurance program.

All testing, calibration, and coating performance procedures and reports shall be submitted for approval.

E. Material Requirements

Item Material Specification Valve Body Ductile Iron ASTM A536, GR.

65, 45,12 (min) Plunger Stainless Steel AISI 304 or better Regulating cylinder Stainless Steel AISI 304 or better Shaft Bushing Bronze ASTM B427 or

B455 when not subject to dezincification

Crank shaft Stainless Steel AISI 420 or better Crank mechanism (sizes 6” – 24”)

Stainless Steel AISI 304

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Seat / Retaining ring Stainless Steel AISI 304 Plunger guide rails Bronze Welded

Overlay ASTM B427 or B455 when not subject to dezincification

Seal Elastomers EPDM ASTM 2000 hardness per manufacture

1. Fasteners: All studs, bolts, washers, and nuts in contact with water shall be stainless steel type 304 or 316.

2. All materials of moving components in contact with each other shall be of dissimilar hardness to prevent galling.

F. Manufacturer

1. Erhard

2. VAG RIKO

3. Henry Pratt

Plunger valves shall be supplied by a manufacturer regularly engaged in the design and manufacture of plunger-type or axial-flow pressure control valves with documented installations of similar size and service.

G. Electric Actuator

1. Supplier shall provide electric motor actuators and gearboxes for the plunger valve as specified.

2. The actuator shall conform to AWWA C540.

3. The actuator shall meet requirements set out in ISA SP 96.02.

4. The actuator and gearbox shall be rated for modulating service.

5. The actuator and gearbox shall be sized for the maximum operating conditions of the plunger valve.

6. The actuator shall be capable of functioning in an ambient temperature ranging from -33°C (22°F) to 70°C (140°F).

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7. The actuator and gearbox shall operate the valve from full open to full close or from full close to full open within plus or minus 15 percent of the following targeted timing limits: a. Approximate Operating Time:

120 Seconds

8. The actuator shall be equipped with the Solid State Motor Reverser (SSMR).

9. The actuator shall have stainless steel plate stamped with actuator data including type, serial number, brand, and equipment record number.

H. Enclosure

1. The actuator enclosure shall be IP66/IP68 rated.

2. The actuator motor and all other internal electrical elements of the actuator shall be protected from ingress of moisture and dust.

3. Enclosure must allow for temporary site storage without the need for electrical supply connection.

4. All external fasteners for actuator enclosure shall be plated stainless steel and shall be captive.

5. All movable parts shall be protected from wear with bearings suitable for submerged service.

I. Motor

1. Actuator motor shall be a low-inertia high-torque design, Class F insulated with a Class B temperature rise giving a time rating of 15 minutes at 40°C (104°F) at an average load of at least 33 percent of maximum valve torque. Temperature shall be limited by two thermostats embedded in the motor end windings and integrated into its control.

J. Gearing

1. The actuator gearing shall be enclosed in an oil or grease-filled gear case.

K. Handwheel Operation

1. The actuator shall be equipped with handwheel for emergency operation.

L. Driver Interface

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1. The actuator shall be furnished with a drive bushing easily detachable for machining to suit the valve stem or gearbox input shaft. The drive bush shall be positioned in a detachable base of the actuator. Thrust bearings shall be sealed for life, and the base shall be capable of withstanding five times the rated thrust of the actuator.

M. Torque

1. The actuator shall have a torque setting range of 40 percent to 100 percent.

N. Local Controls

1. The actuator shall incorporate local controls for open, close, and stop and a local/stop/remote mode selector switch lockable in any one of the following three positions: local control only, stop (no electrical operation), and remote control plus local stop only.

2. The local controls shall be arranged so that the direction of valve travel can be reversed without the necessity of stopping the actuator.

3. The local controls and display shall be rotatable through increments of 90 degrees to suit valve and actuator orientation.

O. Remote Valve Position and Status Indication

1. The valve actuator shall be controlled remotely via ODVA certified EtherNet/IP communications (Rotork), or Modbus RTU (AUMA). All status and position controls will be controlled through the Fieldbus connection.

2. The valve shall remain in current position during control or power disruption (fail in last position).

3. Open and close external interlocks shall be made available to inhibit local and remote valve opening/closing control. It shall be possible to configure the interlocks to be active in remote control only.

P. Remote Valve Position Control

1. Remote valve control signals shall be capable of using 120V AC or 24V DC inputs and suitable for any one or more of the following methods of control:

a. Open, close, and stop control.

b. Open and close maintained or “push-to-run” (inching) control.

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c. Overriding emergency shut-down to close (or open) valve from a normally closed or open contact.

d. Controls the valve when local-stop-remote is in REMOTE. OPEN and CLOSE inputs configurable between maintained (actuator runs until end of travel, high torque, or a STOP input) and momentary (actuator stops when command is removed).

e. Isolated inputs shall be capable of operating from external control voltage source or internal power supply: Furnish control power supplies within the actuator.

Q. Local Position Indication

1. The actuator display shall include a dedicated numeric/symbol digital position indicator displaying valve position from fully open to fully close.

2. The actuator display shall be backlit to enhance contrast at all ambient light levels.

3. The actuator display shall include a fully configurable dot-matrix display element with a minimum pixel resolution of 168 x 132 to display operational, alarm, configuration, and graphical data logger information.

Data logger graphical displays should as a minimum be able to display log and trend graphs on the local LCD for the following:

a. Torque versus position.

b. Number of starts versus position.

c. Number of starts per hour.

d. Dwell time.

e. Average temperature.

4. The actuator main display shall be capable of indicating four different home-screens of the following configuration:

a. Position and status.

b. Position and torque (analogue).

c. Position and torque (digital).

d. Position and demand (positioning).

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R. Integral Starter and Transformer

1. The actuator reversing starter shall be suitable for 60 starts per hour and of rating appropriate to motor size.

2. The actuator shall be activated and ready for use with:

a. ODVA EtherNet/IP (Rotok) communications.

b. Modbus RTU (AUMA) communications

S. Wiring and Termination

1. Internal wiring shall be tropical grade PVC-insulated stranded cable of appropriate size for the control and single-phase power. Each wire shall be clearly identified at each end. The terminals shall be embedded in a terminal block of high tracking resistance compound.

2. The terminal compartment shall be separated from the inner electrical components of the actuator by means of a watertight seal and shall be provided with a minimum of three-threaded cable entries with provision for an additional five extra conduit entries.

3. Configured for 480VAC 3-Phase

4. All wiring shall be contained within the main enclosure.

5. The terminal box cover shall include a terminal identification card containing the following information:

a. Serial number.

T. Coating

1. Actuators shall be provided with epoxy coating in compliance with AWWA C550.

2. The actuator and any brackets are to be either all stainless steel or coated with ANSI/NSF Standard 61 approved epoxy coating.

U. Testing and Start-Up

1. Electric actuator and gearbox shall be factory-mounted, tested, and adjusted on the valve for which it is supplied. Mounting and testing of the complete valve and actuator assembly shall be performed by one of the following:

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a. Performed by valve manufacturer or manufacturer-authorized service provider with demonstrated experience.

b. An authorized distributor and service facility for the valve having at least five years of experience in the servicing of the equipment furnished.

V. Electric Actuator Manufacturer:

1. Electric actuators for plunger valves shall be manufactured by:

a. Auma Model SA w/ AC controls and Modbus RTU.

b. Rotork IQ3 with integral ODVA EtherNet/IP fieldbus communication