Hydrants Boston | UL 246/FM 1510/AWWA C502 BFD | Valve-Atlas

Hydrants Boston: UL 246 Listed and FM 1510 Approved AWWA C502 Dry-Barrel and AWWA C503 Wet-Barrel Fire Hydrants for 780 CMR Chapter 9, 527 CMR 1.00, AWWA C502 and NFPA 24 Chapter 7 Municipal Fire Mains, Private Fire Service and Industrial Fire Water

ValveAtlas supplies UL 246 Listed, FM Class 1510 Approved and AWWA C502 (dry-barrel) and AWWA C503 (wet-barrel) fire hydrants including compression-type dry-barrel, wet-barrel, monitor (wall) hydrants and yard/industrial hydrants to fire protection contractors, civil underground contractors, municipalities and industrial facility owners across Boston, Cambridge, Somerville, Quincy, Brookline, Newton, Waltham, Worcester and Springfield. Metro delivery, ductile-iron hydrant bodies with epoxy-lined interior, bronze operating mechanism, stainless hardware and safety break-flange for traffic collision protection designed for New England frostline 4 ft to 5 ft (1.2 m to 1.5 m), White Mountains 6 ft (1.8 m) service and 780 CMR Ch 9 submittal packages for BFD.

This page is the technical reference for Boston specifying engineers, civil underground contractors, fire protection engineers and municipal water utilities selecting fire hydrant packages for Logan International (BOS) and Hanscom Field (BED) airside distribution, Raytheon Waltham, GE Aerospace Lynn, BAE Systems Nashua, Seaport marine terminal and Everett LNG industrial sites, Massachusetts Water Resources Authority (MWRA), Boston Water and Sewer, Cambridge Water, Newton Water and Worcester DPW municipal fire-main distribution, Harvard, MIT, Boston University, Northeastern, Tufts, Boston College and UMass Boston campuses, Markley One Summer Street, QTS Somerville, Sabey Intergate Boston and Iron Mountain Boston data centers and any NFPA 24 Chapter 7 private fire service main or municipal fire hydrant installation, governed by 780 CMR (Massachusetts State Building Code) Chapter 9 and 527 CMR 1.00, NFPA 24 Chapter 7, AWWA C502 dry-barrel.

Hydrant range for Boston fire protection projects

Type	UNIVAL SKU	Main valve opening (MVO)	Max working pressure	Listings	Typical Boston application
Dry-barrel compression type	UVH-3DRY-5.25	5.25 inch MVO	250 psi	UL 246, FM 1510, AWWA C502	Municipal fire main with freeze-drain for Canadian and Northern US installations
Dry-barrel compression type	UVH-3DRY-6.0	6 inch MVO high-flow	250 psi	UL 246, FM 1510, AWWA C502	High-flow hydrant for industrial and airport apron
Wet-barrel monitor type	UVH-5BR-4.5	4.5 inch MVO	250 psi	UL 246, FM 1510, AWWA C503	Indoor parking garage monitor hydrant, heated enclosure outdoor
Dry-barrel with Storz connection	UVH-3DRY-STZ4	5.25 inch MVO, Storz 4 inch pumper	250 psi	UL 246, FM 1510, AWWA C502	Quick-connect hydrant for rapid deployment fire department apparatus
High-pressure dry-barrel	UVH-3DRY-HP	5.25 inch MVO	350 psi	UL 246, FM 1510, AWWA C502	High-pressure fire loop for industrial and high-rise lead-in
Yard or industrial hydrant	UVH-YARD-2.5	2.5 inch yard single-nozzle	250 psi	UL 246, FM 1510	Small industrial site with single 2.5 inch nozzle
Break-flange traffic model	UVH-3DRY-BF	5.25 inch MVO with break-flange	250 psi	UL 246, FM 1510, AWWA C502	Curbside or apron with vehicle collision protection, break-safe flange
Flush-type ground hydrant	UVH-FLUSH-6	6 inch ANSI flange	250 psi	UL 246, FM 1510, AWWA C502	Flush ground hydrant for airport apron or parking deck
Wall or monitor-style	UVH-WALL-2.5	2.5 inch wall-mount	250 psi	UL 246, FM 1510	Industrial building wall-mount monitor hydrant, fire brigade connection

Why Boston contractors choose ValveAtlas hydrants

UL 246 and FM 1510 dual listing for BFD acceptance. Every UNIVAL hydrant is UL 246 Listed (hydrants for fire-protection service) and FM Class 1510 Approved. BFD accepts listed hydrants with factory submittal, 780 CMR Ch 9 compliance letter and NFPA 24 Chapter 7 private fire service main documentation and AWWA C502 dry-barrel compliance certificate.

Dry-barrel compression type for freeze protection. UVH-3DRY series compression-type dry-barrel hydrants with main valve at the inlet base, automatic bottom drain opens when the hydrant is closed, and a dry barrel above the main valve prevents freeze damage. Critical for Boston installations in New England frostline 4 ft to 5 ft (1.2 m to 1.5 m), White Mountains 6 ft (1.8 m). Standard bury depths 4 ft, 4.5 ft, 5 ft, 5.5 ft and 6 ft match local frostline requirements.

Wet-barrel monitor type for heated enclosures. UVH-5BR wet-barrel hydrants with integral nozzle valves on the barrel allow independent nozzle operation without closing the main. AWWA C503 listed; used for indoor parking garage monitors, heated enclosures, tropical exposures or below-frostline positive-drain municipal systems. Not recommended for freeze-exposed installations in Boston without heat trace.

Ductile iron with fusion-bonded epoxy. UVH bodies are ductile iron ASTM A536 Grade 65-45-12 with factory fusion-bonded epoxy interior and exterior coating per AWWA C550. Bronze seat, bronze operating nut, stainless steel stem and EPDM seal. 250 psi standard working pressure with 500 psi hydrostatic test per AWWA C502 Section 5.

Safety break-flange for traffic protection. UVH-3DRY-BF break-flange (or “traffic model”) hydrants include an engineered shear zone at the ground-line barrel so that a vehicle collision shears the upper barrel without damaging the buried main valve or supply main. Allows quick field replacement of the upper barrel without excavation. AWWA C502 Section 4.6 compliant.

Nozzle configuration customized to BFD. Standard Boston nozzle configuration is one 4.5 inch NH (Steamer) with National Standard Thread and two 2.5 inch NH, with thread form matching local fire department apparatus hose couplings. Storz 4 inch or 5 inch quick-connect common for BFD and surrounding mutual-aid. Pentagon-head operating nut sized to BFD fire service wrench (typically 1-1/2 inch or 1-1/4 inch pentagon).

Direct substitution for Mueller, Kennedy, Waterous, Clow and AVK. UNIVAL UVH-3DRY and UVH-5BR are UL 246/FM 1510/AWWA C502 listed equivalent to Mueller Super Centurion A-423, Kennedy K-81A, Waterous Pacer WB-67, Clow Medallion F-2545 and AVK Series 21/30. BFD accepts listed equivalent substitutions with engineer-of-record approval, municipal water authority acceptance and factory submittal package.

Code and listing acceptance for Boston

780 CMR (Massachusetts State Building Code) Chapter 9. 780 CMR (Massachusetts State Building Code) Chapter 9 references NFPA 24 Chapter 7 and 527 CMR 1.00, NFPA 24 Chapter 7, AWWA C502 dry-barrel for private fire service main hydrants. Hydrant spacing and coverage are governed by NFPA 1 Fire Code and local fire flow requirements. Municipal hydrants follow AWWA M17 Maintenance and NFPA 291 Flow Testing. UVH UNIVAL ships 780 CMR Ch 9 compliant.

NFPA 24 Chapter 7 private fire service main hydrant. NFPA 24 Chapter 7 specifies listed hydrant on private fire service main with indicating control valve (post indicator valve or wall indicator valve) upstream to allow isolation without main shutdown. UVH series satisfies NFPA 24 requirement for listed hydrants on private mains serving warehouses, industrial sites, campuses and data centers.

AWWA C502 dry-barrel hydrant. AWWA C502 governs dry-barrel hydrants with 3-inch to 6-inch MVO, compression-type main valve, and freeze-drain design. UVH-3DRY series meets AWWA C502 with 5.25 inch MVO standard, 6 inch high-flow option and 250 psi working pressure with 500 psi test. AWWA C502 Section 4.6 covers traffic break-flange provisions.

AWWA C503 wet-barrel hydrant. AWWA C503 governs wet-barrel hydrants for non-freeze climates with one main valve per nozzle. UVH-5BR series meets AWWA C503 for indoor monitor, heated enclosure and freeze-immune installations. Not appropriate for most Boston exterior applications without heat trace.

NFPA 291 flow testing. NFPA 291 governs fire flow testing of hydrants at residual and static pressure to validate hydrant color-coding (blue 1500 gpm and up, green 1000 gpm, orange 500 gpm, red under 500 gpm). All UVH hydrants ship unpainted body with customer-specified cap color per ISO 14 spec or per BFD standard color code.

BFD acceptance. Boston Fire Department (BFD), MA Board of Fire Prevention Regulations and MWRA inspection references 780 CMR (Massachusetts State Building Code) Chapter 9, 527 CMR 1.00, NFPA 24 Chapter 7, AWWA C502 dry-barrel and manufacturer listing. Factory submittal with UL/FM/AWWA certificates, municipal acceptance test and hydrostatic test per AWWA C502 Section 5 required for sign-off.

Mueller, Kennedy, Waterous, Clow and AVK substitution for Boston projects

Mueller Super Centurion A-423 dry-barrel. Substitute UVH-3DRY-5.25 or UVH-3DRY-BF at matching 5.25 inch MVO, 250 psi working pressure, bury depth and nozzle configuration. Same UL 246/FM 1510/AWWA C502 listing, ductile iron body with fusion-bonded epoxy, bronze main valve seat. Boston standard municipal and private fire main substitution with factory submittal package.

Kennedy K-81A dry-barrel. Substitute UVH-3DRY-5.25 or UVH-3DRY-6.0 at matching MVO, pressure class and bury depth. Same compression-type main valve and break-flange design. AWWA C502 compliant.

Waterous Pacer WB-67 dry-barrel. Substitute UVH-3DRY-5.25 at matching 5.25 inch MVO and bury depth. Same compression-type design with automatic bottom drain and bronze seat.

Clow Medallion F-2545 dry-barrel. Substitute UVH-3DRY-5.25 or UVH-3DRY-BF at matching 5.25 inch MVO and break-flange option. AWWA C502 compliant with matching bury depth.

AVK Series 21/30 dry-barrel. Substitute UVH-3DRY-5.25 at matching MVO and working pressure. Matching resilient seated main valve, ductile iron body and UL/FM/AWWA listing.

American Darling Mk 73. Substitute UVH-3DRY-5.25 or UVH-3DRY-BF. Same AWWA C502 compliance and compression-type design for municipal and private fire main service.

Installation scenarios for Boston hydrants

Logan International (BOS) and Hanscom Field (BED) airside distribution and apron hydrants. Airport fire main with UVH-3DRY-5.25 standard dry-barrel at terminal gates, UVH-FLUSH-6 flush ground hydrants on apron and taxiway perimeter for crash fire rescue (CFR) access, and UVH-3DRY-BF break-flange at vehicle-exposed curbs. FAA AC 150/5210-14 compliant hydrant spacing with 250 ft coverage per hydrant on airside.

Raytheon Waltham, GE Aerospace Lynn, BAE Systems Nashua, Seaport marine terminal and Everett LNG industrial fire water and process safety. Industrial site private fire main with UVH-3DRY-6.0 high-flow hydrants for monitor tower refill, UVH-WALL-2.5 wall-mount hydrants on building face for brigade connection, and UVH-3DRY-HP 350 psi high-pressure on foam suppression header. NFPA 24 Chapter 7 compliant with listed control valves upstream.

Massachusetts Water Resources Authority (MWRA), Boston Water and Sewer, Cambridge Water, Newton Water and Worcester DPW municipal fire main distribution. Municipal street hydrants with UVH-3DRY-5.25 standard 5.25 inch MVO at 300 ft to 500 ft spacing per ISO fire flow requirements. Break-flange option UVH-3DRY-BF for curbside and intersection placements. AWWA M17 maintenance and NFPA 291 flow testing compliant.

Harvard, MIT, Boston University, Northeastern, Tufts, Boston College and UMass Boston campus and Markley One Summer Street, QTS Somerville, Sabey Intergate Boston and Iron Mountain Boston data center. Campus and data center private fire loop with UVH-3DRY-5.25 at 300 ft spacing, UVH-3DRY-HP 350 psi near fire pump discharge and UVH-WALL-2.5 wall-mount at building face for fire brigade connection. NFPA 24 compliant with Post Indicator Valve (PIV) isolation upstream of each hydrant.

High-rise standpipe and fire pump room. Boston high-rise buildings with UVH-3DRY-5.25 at primary ingress and UVH-WALL-2.5 wall-mount in mechanical yards serving fire pump room test header. Supports fire pump flow test per NFPA 25 Chapter 8.

Related products for complete Boston fire protection valve package

Gate valves. UVG-OSY OS&Y rising stem gate valves and UVG-NRS non-rising-stem post indicator valves upstream of hydrant per NFPA 24. See Gate Valves Boston.

Post indicator valves. UVPIV-BG post indicator valves as the indicating control valve on hydrant isolation per NFPA 24. See Post Indicator Valves Boston.

Fire pumps. UVFP-HSC, UVFP-ES and UVFP-VIL fire pumps feeding the hydrant loop per NFPA 20. See Fire Pumps Boston.

Check valves. UVC-NR silent-closure and UVC-SW swing check valves for fire pump discharge and sprinkler water supply per NFPA 13 Section 16.8. See Check Valves Boston.

Frequently asked questions (Boston)

Is UNIVAL accepted by BFD? Yes. UNIVAL hydrants are UL 246 Listed, FM 1510 Approved and AWWA C502 (dry-barrel) or AWWA C503 (wet-barrel) compliant. BFD accepts listed hydrants with factory submittal, 780 CMR Ch 9 compliance letter, NFPA 24 Chapter 7 documentation and municipal water authority acceptance.

Dry-barrel vs wet-barrel for Boston? Dry-barrel is the default for Boston given New England frostline 4 ft to 5 ft (1.2 m to 1.5 m), White Mountains 6 ft (1.8 m). Wet-barrel is only appropriate for heated enclosures, indoor parking garage monitor hydrants or heat-traced installations. UVH-3DRY is the standard specification for outdoor Boston municipal and private fire main service.

What bury depth do I specify? Bury depth matches local frostline. Boston standard bury depths are 4 ft, 4.5 ft, 5 ft, 5.5 ft and 6 ft. Municipal water authority or engineer-of-record determines exact bury depth from soil survey. Hydrant comes with fixed bury; no field adjustment.

What nozzle configuration? Standard Boston configuration is one 4.5 inch NH (Steamer) with National Standard Thread and two 2.5 inch NH. Storz 4 inch or 5 inch quick-connect common for BFD and surrounding mutual-aid. Pentagon-head operating nut sized per BFD fire service wrench. Thread specified per factory order to match fire department couplings.

What is the pressure rating? Standard UVH-3DRY is 250 psi working pressure with 500 psi hydrostatic test per AWWA C502. UVH-3DRY-HP high-pressure option is 350 psi working pressure for industrial high-pressure loops and high-rise lead-ins. UVH-5BR wet-barrel is 250 psi AWWA C503.

What is the delivery time to Boston? Stock UVH-3DRY-5.25 at standard bury depths ships 2 to 4 weeks. Break-flange UVH-3DRY-BF and high-pressure UVH-3DRY-HP factory-built 4 to 6 weeks. Custom nozzle threads and Storz options 6 to 8 weeks. Metro freight from Toronto HQ 3 to 5 business days.

How do I substitute Mueller, Kennedy, Waterous, Clow and AVK on a Boston project? Submit substitution letter with UNIVAL UL 246/FM 1510/AWWA C502 certificates, factory submittal drawing, municipal water authority pre-approval and NFPA 24 Chapter 7 compliance. Engineer-of-record approval follows; BFD accepts listed equivalent substitutions.

Contact ValveAtlas for Boston hydrant quotation

For hydrant quotations, Mueller Super Centurion A-423, Kennedy K-81A, Waterous Pacer WB-67, Clow Medallion F-2545 and AVK Series 21/30 substitution submittals for BFD approval, or NFPA 24 Chapter 7 hydrant packages with AWWA C502 dry-barrel freeze protection for Logan International (BOS) and Hanscom Field (BED) airside, Boston municipal main, industrial site, university campus, data center or high-rise lead-in projects, email the project civil drawings, bury depth, nozzle configuration and fire flow requirement to burakpadr@gmail.com or use the contact form. Same-day response on Boston urgent orders.