Hydrants London

Hydrants London: UL 246 Listed and FM 1510/1511 Approved AWWA C502 Dry-Barrel and AWWA C503 Wet-Barrel Fire Hydrants for ADB 2019, BS 9990 and BS 750 Municipal Fire Mains, Private Fire Service and Industrial Fire Water

ValveAtlas supplies UL 246 Listed, FM Class 1510/1511 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 London, Greater London, Manchester, Birmingham, Leeds, Glasgow, Edinburgh, Bristol and the Thames Valley. 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 UK frostline 750 mm typical, Scotland 1.2 m, above-ground dry-barrel required for freeze zones service and ADB and BS 9990 submittal packages for LFB.

This page is the technical reference for London specifying engineers, civil underground contractors, fire protection engineers and municipal water utilities selecting fire hydrant packages for airport airside distribution, automotive, aerospace, shipyard and steelworks industrial sites, water company municipal fire-main distribution, university campuses, colocation data centers and any BS 9990 private fire service main or municipal fire hydrant installation, governed by Building Regulations Approved Document B (ADB) 2019, BS 9990, BS 9999, BS 750 Specification for hydrants and BS EN 14339/14384.

Hydrant range for London fire protection projects

Type	SKU	Main valve opening (MVO)	Max working pressure	Listings	Typical London 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 1511, 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 London contractors choose ValveAtlas hydrants

UL 246 and FM 1510/1511 dual listing for LFB acceptance. Every hydrant we supply is UL 246 Listed (hydrants for fire-protection service) and FM Class 1510 (dry-barrel) or 1511 (wet-barrel) Approved. LFB accepts listed hydrants with factory submittal, ADB and BS 9990 compliance letter and BS 9990 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 London installations in UK frostline 750 mm typical, Scotland 1.2 m, above-ground dry-barrel required for freeze zones. Standard bury depths 750 mm, 900 mm and 1.2 m BS 750 pit depths 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 London 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.

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 compliant.

Nozzle configuration customized to LFB. Standard London nozzle configuration is BS 336 2.5 inch instantaneous (round male coupling) or Storz 70 mm / 100 mm, with thread form matching local fire department apparatus hose couplings. Storz 100 mm quick-connect optional; LFB default is BS 336 instantaneous. Pentagon-head operating nut sized to LFB fire service wrench (typically 1-1/2 inch or 1-1/4 inch pentagon).

Code and listing acceptance for London

Building Regulations Approved Document B (ADB) 2019, BS 9990, BS 9999. Building Regulations Approved Document B (ADB) 2019, BS 9990 and BS 9999 reference BS 750 Specification for hydrants and BS EN 14339/14384 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. The UVH series ships ADB and BS 9990 compliant.

NFPA 24 private fire service main hydrant. NFPA 24 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 also 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 London 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 LFB standard color code.

LFB acceptance. London Fire Brigade (LFB), local water undertakers and UK insurers inspection references Building Regulations Approved Document B (ADB) 2019, BS 9990, BS 9999, BS 750 Specification for hydrants, BS EN 14339/14384 and manufacturer listing. Factory submittal with UL/FM/AWWA certificates, municipal acceptance test and hydrostatic test per AWWA C502 required for sign-off.

Approved-equal submittals

Where a specification names a specific manufacturer, we prepare an approved-equal submittal package (listing certificates, dimensional drawings and material data) for review by the engineer of record and the authority having jurisdiction.

Installation scenarios for London hydrants

Airport 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. Hydrant spacing with 250 ft coverage per hydrant on airside.

Automotive, aerospace, shipyard and steelworks 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 compliant with listed control valves upstream.

Greater London and UK regional 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.

University campus and colocation 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. London 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.

Related products for complete London 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 London.

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

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

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

Frequently asked questions (London)

Are these hydrants accepted by LFB? Yes. These hydrants are UL 246 Listed, FM 1510/1511 Approved and AWWA C502 (dry-barrel) or AWWA C503 (wet-barrel) compliant. LFB accepts listed hydrants with factory submittal, ADB and BS 9990 compliance letter, BS 9990 documentation and municipal water authority acceptance.

Dry-barrel vs wet-barrel for London? Dry-barrel is the default for London given UK frostline 750 mm typical, Scotland 1.2 m, above-ground dry-barrel required for freeze zones. 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 London municipal and private fire main service.

What bury depth do I specify? Bury depth matches local frostline. London standard bury depths are 750 mm, 900 mm and 1.2 m BS 750 pit depths. 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 London configuration is BS 336 2.5 inch instantaneous (round male coupling) or Storz 70 mm / 100 mm. Storz 100 mm quick-connect optional; LFB default is BS 336 instantaneous. Pentagon-head operating nut sized per LFB 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 London? 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.

Contact ValveAtlas for London hydrant quotation

For hydrant quotations, approved-equal submittals for LFB approval, or NFPA 24 hydrant packages with AWWA C502 dry-barrel freeze protection for airport airside, London 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 info@valve-atlas.com or use the contact form. Same-day response on London urgent orders.