IFB_GS_DWM_2512_1260096_FIRE HYDRANTS AND GAT.pdf

Rev. 07.01.25

IFB/GS/DWM/2512-1260096/Fire Hydrants and Gate Valves

Material Type: Fire Hydrant Assembly, Valves, and Repair Parts Revision Date: 1/15/2026

CITY OF ATLANTA SPECIFICATION FOR IFB/GS/DWM/2512-1260096/FIRE

HYDRANTS AND GATE VALVES

SCOPE AND CLASSIFICATION - PART I

Scope - This specification describes minimum requirements for fire hydrant assemblies, fire hydrant repair parts and tools, resilient wedge gate valves and valve box assemblies for the City of Atlanta, Department of Watershed Management. – Part II.

Classification - The material(s) must be classified as follows:

Group I - Mueller Fire Hydrant Assemblies

Group II - Fire Hydrant Repair Parts and Tools

Group III - Resilient Wedge Gate Valves

Group IV - Valve Box Assemblies

SCOPE AND CLASSIFICATION - PART II

REQUIREMENTS

Vendor must state “Compliance” or “Exception” for requirements listed below for each group.

Check marks, dittos, or any other markings may not be accepted, and your bid could be rejected.

1. GROUP I – MUELLER COMPLETE FIRE HYDRANT ASSEMBLY

1.1 General -

1.1.1 To ensure compatibility with the City’s existing inventory of hydrants, spare parts, and standardized maintenance procedures, all fire hydrant assemblies must be Mueller Super Centurion 250 A-423, modified as shown in Detail No.: W-1 Typical Fire Hydrant and as described herein. No other fire hydrant assemblies will be allowed.

1.1.2 Fire hydrant assemblies must have a working pressure of 250 psi with no leakage.

1.1.3 Fire hydrant assemblies must be furnished with complete joint assemblies including glands, gaskets, bolts and nuts.

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1.1.4 Fire hydrant assemblies must conform to the requirements of AWWA C502 and ANSI/NSF-61, and NSF-372.

1.2 Direction of Opening -

1.2.1 Fire Hydrant Assemblies must be designed to open “right” (clockwise) with approximately 17 ¼ turns.

1.3 Nozzles -

1.3.1 Fire hydrant must have two (2) 2.5-inch hose connections, 120 degrees apart and one (1) 4.5-inch pumper connection.

1.3.2 Threads on hose and pumper connections, nozzles, and nozzle caps must be National Standard Threads which conform to NFPA 1963.

1.4 Operating Nuts -

1.4.1 The operating nut on the top of the bonnet and on the nozzle, caps must be a 7/8-inch square nut, made of bronze which meets the requirements of

ASTM B584.

1.4.2 The operating nut on the bonnet must have a tamper-proof ductile iron combination hold-down nut with operating nut shield that requires a Mueller #A-310 Socket Wrench to open.

1.5 Markings -

1. 5.1 Hydrant must have the manufacturer’s name, year of manufacture, valve size, pressure rating, bury mark, and the letters “COA DWM” cast into the barrel in legible, raised letters.

1.5.2 The word “Open” with an arrow to indicate the direction to open, must be cast into the Bonnet in legible, raised letters, that can be easily seen when looking down on the hydrant.

1.5.3 The length of the lower barrel of the fire hydrant assembly must be stenciled on the lower barrel of the fire hydrant assembly. The location of the stencil which identifies the length of the lower barrel, and the packing of the fire hydrant assemblies, must be such that the length of the lower barrel of the fire hydrant assembly is clearly visible to forklift operators who are seated on the forklift.

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1.6 Substitutions-

1.6.2 No substitutions allowed.

GROUP I: _______________ ________________

Compliance Exception

2. GROUP II - FIRE HYDRANT REPAIR PARTS AND TOOLS

2.1 General –

2.1.1 To ensure compatibility with the City’s existing inventory of hydrants, spare parts, and standardized maintenance procedures, unless otherwise approved by the Department of Watershed Management, all fire hydrant parts, and specialty tools must be manufactured by Mueller Water Products (Mueller).

2.2 Upper Sections -

2.2.1 When an Upper Section Complete of a fire hydrant assembly is ordered, it must be a Mueller Super Centurion 250 A-421 o r Mueller Super Centurion 250 A-423 which meets the City of Atlanta’s standard requirements as shown in Detail No.: W-1 Typical Fire Hydrant and as specified for Group I above.

2.2.2 An Upper Section Complete must be furnished with caps, safety flange and bolts, and safety stem coupling with sleeve and set screw. An Upper Section Complete must be completely assembled and ready for installation on existing lower barrel section.

2.3 Substitutions -

2.3.1 No substitutions for a fire hydrant Upper Section Complete is allowed.

GROUP II: ______________ _______________

Compliance Exception

3. GROUP III - RESILIENT WEDGE GATE VALVES

3.1 General -

3.1.1 Gate valves must be resilient seated type which meet the City of Atlanta standard requirements as specified in this section.

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3.1.2 Gate valves must have a minimum working pressure of 250 psi.

3.1.3 Gate valves must have a working temperature range of 33° to 170°F.

3.2 Materials -

3.2.1 All ferrous components of the valve, including the wedge, must be constructed of ductile iron

3.2.2 Materials for gate valve components must meet the following specifications:

a. Body – Ductile Iron, ASTM A-536, Class B

b. Bonnet – Ductile Iron, ASTM A-536

c. Disc – Ductile Iron, ASTM A-536

d. Disc encapsulation – EPDM or SBR ASTM D2000

e. Stuffing box – Ductile Iron, ASTM A-536

f. O-ring plate– Ductile Iron, ASTM A-536

g. Stem – Bronze, AWWA C-515 Nuts & Bolts

h. Wrench nut – Ductile Iron, ASTM A-536

i. Cap screw – Stainless Steel Type 304 or 316

j. Stuffing box bolts & nuts – Stainless Steel Type 304 or 316

k. Bonnet bolts & nuts – Stainless Steel Type 304 or 316

l. Stem nut-Bronze, ASTM B-584

m. Disc nut – Bronze, ASTM B-584 Seals

n. Stem O-rings – Nitrile, ASTM D2000

o. Anti-friction washers – Stainless Steel Type 304 or 316

p. Bonnet seal – O-ring, Nitrile, ASTM D2000

q. Wedge Guide Cover – Polymer

3.2.3 All body to bonnet bolting material must meet the dimensional requirements of AWWA C-515 and ANSI B18.2.1, be of the same size and length, and have square or hexagonal heads. Metric bolts, socket head cap screws, or recessed Allen-head type bolts will not be allowed.

3.3 Valve Opening -

3.3.1 The waterway must be fully unobstructed when the sealing mechanism is withdrawn from the flow-way and the valve is in a full, open, position.

The flow way, including the seat area, must be smooth, unobstructed, and free of all pockets, cavities and depressions which trap sediment or debris, and must accept a full-size tapping cutter.

3.4 Valve Wedges -

3.4.1 Valve wedges must be symmetrical in design, seating equally well with flow in either direction, and must incorporate the use of guides

Rev. 07.01.25 encapsulated with an engineered polymer. Valves with metal seats are not allowed.

3.4.2 Valve wedges must be made of ductile iron and fully encapsulated in rubber. The sealing rubber must be permanently bonded to the wedge per

ASTM D-429.

3.4.3 The wedge to stem design must employ the use of an independent stem nut.

3.5 Valve Stems -

3.5.1 Valve stems must be non-rising stem type with a 2-inch square operating nut and must open right (clockwise).

3.5.2 Valve stems must be cast with integral collars.

3.5.3 Stems must be bronze constructed from a copper alloy per AWWA C-515.

3.5.4 All stem diameters and the prescribed number of turns to open must be as detailed in AWWA C-515.

3.5.5 Stem thrust collars must be integral to the stem and must be sealed with two O-rings above the thrust collar and one below. The O-rings and thrust collar must be factory lubricated. O-rings set in a cartridge type design will not be allowed.

3.5.6 Anti-friction thrust washers must be used above and below the thrust collar to reduce the operating torque of the valve.

3.6 Valve Seals -

3.6.1 All joints between valve parts (e.g. body and bonnet, bonnet and bonnet cover), and all pressure retaining joints must be supplied with O-ring seals.

No flat gaskets must be allowed.

3.7 Valve Coatings -

3.7.1 All internal and external ferrous surfaces must be coated with epoxy to a minimum thickness of 4 mils. The epoxy must conform to AWWA C-550 and must be applied electrostatically prior to assembly. Epoxy must be NSF 61 approved.

3.7.2 The body, bonnet, and O-ring plate must be fusion-bonded epoxy coated, both interior and exterior on body and bonnet.

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3.8 Epoxy -

3.8.1 Epoxy must comply with, and be applied in accordance with, ANSI/AWWA C-550 and ANSI/NSF Standards 61 & 372.

3.8.2 Epoxy must be non-toxic and impart no taste to water.

3.9 Valve End Connections -

3.9.1 Valves must have mechanical joint or compression-restraint connections.

3.9.2 Mechanical joint connections must comply with ANSI/AWWA C- 111/A21.11.

3.9.3 Compression-restraint connections must comply with AWWA C-219.

3.9.4 Compression-restraint connections joints must come fully assembled, provide full circumferential restraint without creating points of high stress, and must connect with a single Stainless-Steel Type 304 or 316 fastener.

The assembly of flange or mechanical joint restrainers using multiple fasteners or wedge bolts is not permitted. Restraint accessories must be factory installed.

3.10 Valve Markings -

3.10.1 Valve must have the manufacturer’s name, year of manufacture, valve size, pressure rating, country of origin, the words “DI” or “Ductile Iron”, and the word “Open” with an arrow to indicate the direction to open, cast into the valve body in legible, raised letters.

3.11 Valve Testing & Certification -

3.11.1 Prior to shipment from the factory, each valve must be tested in accordance with the requirements of AWWA C-515, ANSI/NSF-61, NSF- 372., and, for valves with compression-restraint connections, AWWA C- 219.

3.11.2 The vendor must certify that all valves meet the specified requirements and that all required tests have been performed with passing results.

GROUP III: ______________ ______________

Compliance Exception

Rev. 07.01.25

4. GROUP IV - VALVE BOX ASSEMBLIES

4.1 General -

4.1.1 Valve boxes must be gray cast iron two-piece screw type with drop lids.

4.1.2 Valve box assemblies must meet the requirements of ASTM A-48 and AASHTO M-306, and must be rated for traffic service, H20 loading.

4.1.3 Valve box assemblies must be cast from iron conforming to AASHTO M- 105, Class 35B.

4.1.4 Valve box assemblies must be compatible with Valve Box Assembly Product No. 85502737 as manufactured by East Jordan Iron Work, such that a valve box assembly component provided by the vendor, when substituted for an East Jordan Iron Work component; will result in a combined valve box assembly which meets all Group IV requirements.

4.1.5 Valve box assemblies, without supplemental extensions, must have a vertical range of approximately 27 to 37 inches.

4.1.6 Castings must be of uniform quality, free from sand holes, gas holes, shrinkage, cracks and other surface defects. Castings must be reasonably smooth and well cleaned by shot blasting. Surfaces of the castings must be free from burned-on sand and must be reasonably smooth. Runners, risers, fins, and other cast-on pieces must be removed from the castings and such areas ground smooth.

4.1.7 All castings must fit together properly and be fully interchangeable.

4.1.8 Bearing surfaces between covers and top sections must be cast or machined with such precision that uniform bearing must be provided throughout the perimeter area of contact. Lid must fit snugly without rocking.

4.1.9 Except as otherwise specified in the “Iron Castings Engineering Handbook” published by the American Foundrymen’s Society, Inc., casting dimensional tolerances may vary by +/- 1/16” per foot, and specified casting weights may vary by +/- 5%.

4.2 Markings -

4.2.1 The following must be cast into each component of the valve box assembly in legible, raised letters: name of the producing foundry, country of manufacture, material grade, individual part number, and cast date. All

Rev. 07.01.25 castings must be marked in accordance with all applicable laws and/or regulations.

4.2.2 Valve box lids must have the word "WATER” cast into the top of the lid in 1 ¼ -inch raised letters.

4.3 Coatings-

4.3.1 Except as otherwise specified by the City, all castings are to be coated inside and out with coal tar pitch varnish. Coating may be applied cold. Finished coating should be smooth, glossy, and not brittle when cold, not sticky when hot, and must adhere to the metal at all temperatures.

4.4 Valve Box Lids-

4.4.1 Heavy duty, skirted, valve box lids must weigh 24 pounds, and must be cast with skirts to prevent the valve box cover from coming out of the valve box unless lifted straight up.

4.5 Certification-

4.5.1 The vendor must certify that all valve box assemblies and assembly components meet the specified requirements, and that all required tests have been performed with passing results.

4.6 Quality Assurance/Quality Control--

4.6.1 All manufacturers must be able to demonstrate that there is an acceptable quality control program at the producing foundry and upon request must furnish a quality control manual. Results of tests must be furnished to the City by the vendor upon request.

GROUP IV: ______________ ______________

Compliance Exception

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ACKNOWLEDGEMENT

Bidder, by and through its authorized representative, acknowledges that it has read and understands this Invitation for Bid (“IFB”) and has submitted all required documents and information in response to this IFB. Bidder further acknowledges and agrees that if it is awarded a contract, pursuant to this IFB, Bidder will be bound by terms and conditions of the Contract Documents which are, collectively, this IFB, Bidder’s submitted bid documents, any resulting purchase order(s) and the City’s terms and conditions as provided under an applicable purchase order(s), and the Agreement.

[Bidder]:

Legal Name of Firm

Address

City State Zip Code

Authorized Representative/Print

Signature/Title/Date

Area Code/Telephone Number /Email

COA Supplier ID Number