Fire Valves | McMaster-Carr

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19 Products

Threaded Flow-Adjustment Valves with Fire-Fighting Hose Fittings

Connect these valves to fire hydrants, fire pumps, and fire hoses to adjust the flow of water. Ideal for fighting fires, their internal gate allows unrestricted flow when fully open, unlike globe valves. However, you should only use these valves in emergencies when full flow is needed—they get damaged by throttling over time. They have a nonrising stem that stays in the same spot whether they’re open or closed.

Wheel Handle—377 Brass Body with Brass Gate

Image of Product. Front orientation. Flow-Adjustment Valves. Threaded Flow-Adjustment Valves with Fire-Fighting Hose Fittings, Wheel Handle.

Valves with a wheel handle take up less space than valves with a speed handle. The included hose cap protects them from dirt and debris. It’s connected to the valve with a chain, so you won’t lose it.

Flow Coefficient (Cv)—Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.

	Fire Hose Trade Size	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Temp. Range, ° F	End-to-End Lg.	Stem Type	Features	Certification	Valve Type	For Use With	Seal Material		Each
NPT Female Inlet × NH/NST Male Outlet



	2 1/2	2 1/2	270	300 psi @ 72° F	32 to 100	5"	Nonrising	Hose Cap and Chain	UL Listed, FM Approved	Gate	Water	Buna-N	7461N11	0000000

Speed Handle—Red Brass Body with Bronze Gate

Image of Product. Front orientation. Flow-Adjustment Valves. Threaded Flow-Adjustment Valves with Fire-Fighting Hose Fittings, Speed Handle, Brass Body.

Valves with a speed handle can be turned with one hand, unlike valves with a wheel handle. Quickly connect the fittings to hydrants, pumps, and hoses with the easy-to-grip pin lugs on the sides. Tighten them with a hook-style spanner wrench. To prevent kinking when you’re connecting a hose, the fittings swivel until tightened. These valves are red so people know they’re fire valves.

	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Temp. Range, ° F	End-to-End Lg.	Stem Type	Valve Type	For Use With	Seal Material		Each
NH/NST Female Inlet with Pin Lug (Swivels Until Tightened) × NH/NST Male Outlet



	2 1/2	Not Rated	175 psi @ 72° F	32 to 100	4 13/16"	Nonrising	Gate	Water	Buna-N	7461N12	0000000


	NH/NST Female Inlet with Pin Lug (Swivels Until Tightened) × NPSH Male Outlet



			2 1/2	Not Rated	175 psi @ 72° F	32 to 100	4 13/16"	Nonrising	Gate	Water	Buna-N	7461N13	000000

Threaded Flow-Adjustment Valves for Fuel

To automatically shut off the flow of diesel fuel, fuel oil, kerosene, and oil in case of fire, these valves automatically close and the handle permanently fuses in place when the ambient temperature reaches 165° F. To reuse the valve, replace the handle (sold separately).

Brass Body—Straight

Image of Product. Front orientation. Flow-Adjustment Valves. Threaded Flow-Adjustment Valves for Fuel.

	Valves													Replacement Handles
				Overall
	Pipe Size	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Ht.	Lg.	Temp. Range, ° F	Seal Material	End-to-End Lg.	Certification	For Use With	Valve Type		Each		Each
NPT Female × NPT Female



		3/8	Not Rated	10 psi @ 70° F	3"	1 3/4"	20 to 165	Fluoroelastomer	1 3/4"	UL Listed	Oil, Diesel Fuel, Fuel Oil, Kerosene	Globe	4716K72	000000	4716K28	00000


		1/2	Not Rated	10 psi @ 70° F	3 1/2"	2"	20 to 165	Fluoroelastomer	2"	UL Listed	Oil, Diesel Fuel, Fuel Oil, Kerosene	Globe	4716K53	00000	———	0
		3/4	Not Rated	10 psi @ 70° F	3 1/2"	2 1/2"	20 to 165	Fluoroelastomer	2 1/2"	—	Oil, Diesel Fuel, Fuel Oil, Kerosene	Globe	4716K54	000000	4716K28	0000
		1	Not Rated	10 psi @ 70° F	6 5/8"	2 5/8"	20 to 165	Fluoroelastomer	2 5/8"	—	Oil, Diesel Fuel, Fuel Oil, Kerosene	Globe	4716K55	000000	4716K22	00000

Diverting Valves with Fire-Fighting Hose Fittings

Control the flow of water in two directions from a single source—these diverting valves have two balls and handles for independent operation of each outlet. They can direct flow to one side outlet at full capacity while shutting off flow to the second side outlet, direct flow to both side outlets at reduced capacity, or shut off flow to both side outlets. Valves have a brass body for good corrosion resistance. They are for use with fire-fighting hose.

NH/NST Female × NH/NST Male × NH/NST Male

NH/NST (National Hose/National Standard) threads are only compatible with other NH/NST threads.

	Outlet Fire Hose Trade Sizes	Diverting Valve Flow Pattern	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Temp. Range, ° F	End-to-End Lg.	Valve Type	For Use With	Seal Material		Each
Brass Body



	2 1/2	1 1/2 × 1 1/2	Y-Pattern	Not Rated	300 psi @ 150° F	-20 to 150	5 5/8"	Ball	Water	Buna-N	6504T5	0000000

NPSH Female × NPSH Male × NPSH Male

Female NPSH threads are compatible with male NPSH, NPT, NPTF, and NPSM threads.

Male NPSH (National Pipe Straight Hose) threads are compatible with female NPSH threads.

	Outlet Pipe Sizes	Diverting Valve Flow Pattern	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Temp. Range, ° F	End-to-End Lg.	Valve Type	For Use With	Seal Material		Each
Brass Body



	2 1/2	1 1/2 × 1 1/2	Y-Pattern	Not Rated	300 psi @ 150° F	-20 to 150	5 5/8"	Ball	Water	Buna-N	6504T4	0000000

Pipeline Flame Arresters

To prevent flashback in flammable gas pipelines, an internal flame-arresting element absorbs the heat from a fire to extinguish the flame. These valves are commonly used in pilot lines connected to waste gas burners.

	End-to-End Lg.	For Use With	Flame-Arresting Element Material		Each
Aluminum Body







	NPT Female

	1/4	25 psi @ 176° F	176	3"	Butane, Natural Gas, Propane	316 Stainless Steel	4717K31	0000000


	1/2	25 psi @ 176° F	176	3 3/4"	Butane, Natural Gas, Propane	316 Stainless Steel	4717K32	000000
	3/4	25 psi @ 176° F	176	3 3/4"	Butane, Natural Gas, Propane	316 Stainless Steel	4717K33	000000
	1	25 psi @ 176° F	176	3 3/4"	Butane, Natural Gas, Propane	316 Stainless Steel	4717K34	000000
	1 1/2	25 psi @ 176° F	176	3 3/4"	Butane, Natural Gas, Propane	316 Stainless Steel	4717K35	000000
	2	25 psi @ 176° F	176	4 3/4"	Butane, Natural Gas, Propane	316 Stainless Steel	4717K36	000000

Arresters for Flammable Vapors

Minimize fire hazard from flammable vapors. Mount an arrester to your vent pipe to stop flames from traveling back into your tank. If the ambient temperature reaches 165° F, the fusible links melt, and the cover closes to block flames from the arrester.

Replacement Fusible Links—To reuse the arrester, replace the fusible links (sold separately).

Flame Arresters							Replacement Fusible Links
Pipe Size	Thread Type	Gender	Material	Certification		Each		Each
2	NPT	Female	Aluminum, Cast Iron	UL Listed	1206K81	000000000	1206K85	000000