Check Valves for Methyl Ethyl Ketone (MEK)

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15 Products

Ultra-Chemical-Resistant Threaded Check Valves

The most chemical-resistant check valves in our offering, these have a PFA body to withstand methyl ethyl ketone, sodium hypochlorite, and other extremely harsh chemicals. They open to allow flow in one direction and close when flow stops or reverses.

PFA Body—Spring-Loaded Piston


Female × Female	Female × Male

Male × Female	Male × Male

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.

	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Min. Opening Pressure, psi	Temp. Range, ° F	Color	End-to-End Lg.	Mounting Position	For Use With	Piston Material	Spring Material		Each
NPT Female Inlet × NPT Female Outlet



	1/4	0.75	125 psi @ 150° F	1	0 to 210	Semi-Clear White	2 3/8"	Any Angle, Horizontal, Vertical	Acetone, Ammonia, Butane, Carbon Dioxide, Citric Acid, Diesel Fuel, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Nitric Acid, Nitrogen, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric Acid, Toluene (Methylbenzene), Water, Xylene	PTFE	PTFE	47155K71	0000000


	1/2	4	100 psi @ 150° F	1	0 to 210	Semi-Clear White	3 3/8"	Any Angle, Horizontal, Vertical	Acetone, Ammonia, Butane, Carbon Dioxide, Citric Acid, Diesel Fuel, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Nitric Acid, Nitrogen, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric Acid, Toluene (Methylbenzene), Water, Xylene	PTFE	PTFE	47155K73	000000


	NPT Female Inlet × NPT Male Outlet



			1/4	0.75	125 psi @ 150° F	1	0 to 210	Semi-Clear White	2 7/16"	Any Angle, Horizontal, Vertical	Acetone, Ammonia, Butane, Carbon Dioxide, Citric Acid, Diesel Fuel, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Nitric Acid, Nitrogen, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric Acid, Toluene (Methylbenzene), Water, Xylene	PTFE	PTFE	47155K74	000000


			NPT Male Inlet × NPT Female Outlet



					1/4	0.75	125 psi @ 150° F	1	0 to 210	Semi-Clear White	2 1/16"	Any Angle, Horizontal, Vertical	Acetone, Ammonia, Butane, Carbon Dioxide, Citric Acid, Diesel Fuel, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Nitric Acid, Nitrogen, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric Acid, Toluene (Methylbenzene), Water, Xylene	PTFE	PTFE	47155K76	000000


					NPT Male Inlet × NPT Male Outlet



							1/4	0.75	125 psi @ 150° F	1	0 to 210	Semi-Clear White	2 7/16"	Any Angle, Horizontal, Vertical	Acetone, Ammonia, Butane, Carbon Dioxide, Citric Acid, Diesel Fuel, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Nitric Acid, Nitrogen, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric Acid, Toluene (Methylbenzene), Water, Xylene	PTFE	PTFE	47155K75	000000

Flanged Check Valves for Harsh Chemicals

Bolt these valves to ANSI flanges. The glass-filled vinyl ester body and PTFE seal stand up to a wide range of harsh chemicals. Valves open to allow flow in one direction and close when flow stops or reverses.

Glass-Filled Vinyl Ester Body—Ball

Image of Product. Front orientation. Check Valves. Flanged Check Valves for Harsh Chemicals.

	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Min. Opening Pressure, psi	Temp. Range, ° F	Color	End-to-End Lg.	Mounting Position	For Flange Class	Flange OD	No. of Bolt Holes	Bolt Hole Size	Bolt Circle Dia.	Bolts Included	Specs. Met	For Use With	Ball Material	Seal Material		Each
Flanged × Flanged



	1	35	200 psi @ 250° F	1	-40 to 250	Beige	5"	Vertical	150	4 1/4"	4	5/8"	3 1/8"	No	ASME B16.10, ASME B16.5	Ammonia, Chlorine, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Oil, Phosphoric Acid, Salt Water, Soap Solutions, Toluene (Methylbenzene), Water, Xylene	PTFE	PTFE	1869N1	0000000


	2	54	140 psi @ 250° F	1	-40 to 250	Beige	7"	Vertical	150	6"	4	3/4"	4 3/4"	No	ASME B16.10, ASME B16.5	Ammonia, Chlorine, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Oil, Phosphoric Acid, Salt Water, Soap Solutions, Toluene (Methylbenzene), Water, Xylene	PTFE	PTFE	1869N3	000000

Vacuum Breakers for Chemicals

A plastic body withstands pH neutralizing, cleaning, and plating solutions containing sodium hydroxide, methyl ethyl ketone, and other harsh chemicals. Also known as vacuum-breaking valves, these valves have vents that open when pressure drops to relieve vacuum conditions and prevent backward suction from drawing liquid into upstream piping.

Diaphragm Check Valve

								Material			CPVC Body				PVC Body
	Inlet Pipe Size	Outlet Pipe SIze	For Pipe Schedule	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Min. Opening Pressure, psi	End-to-End Lg.	Seal	DIaphragm	For Use With	Temp. Range, ° F	Color		Each	Temp. Range, ° F	Color		Each
NPT Female Inlet × NPT Female Outlet



		1/2	1/2	80	Not Rated	100 psi @ 75° F	1	4 5/16"	Fluoroelastomer	Fluoroelastomer	Beverage, Food, Air, Ammonia, Argon, Carbon Dioxide, Chlorinated Water, Diesel Fuel, Drinking Water, Ethylene Glycol, Helium, Hydrochloric Acid, Kerosene, Krypton, Liquid Carbon Dioxide, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Water, Xenon	40 to 180	Light Gray	1868N13	0000000	40 to 140	Gray	1868N1	0000000


		3/4	3/4	80	Not Rated	100 psi @ 75° F	1	4 5/8"	Fluoroelastomer	Fluoroelastomer	Beverage, Food, Air, Ammonia, Argon, Carbon Dioxide, Chlorinated Water, Diesel Fuel, Drinking Water, Ethylene Glycol, Helium, Hydrochloric Acid, Kerosene, Krypton, Liquid Carbon Dioxide, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Water, Xenon	40 to 180	Light Gray	1868N14	000000	40 to 140	Gray	1868N11	000000
		1	1	80	Not Rated	100 psi @ 75° F	1	5 1/8"	Fluoroelastomer	Fluoroelastomer	Beverage, Food, Air, Ammonia, Argon, Carbon Dioxide, Chlorinated Water, Diesel Fuel, Drinking Water, Ethylene Glycol, Helium, Hydrochloric Acid, Kerosene, Krypton, Liquid Carbon Dioxide, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Water, Xenon	40 to 180	Light Gray	1868N15	000000	40 to 140	Gray	1868N12	000000

Spring-Loaded Piston Check Valve

								Material				CPVC Body				PVC Body
	Inlet Pipe Size	Outlet Pipe SIze	For Pipe Schedule	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Min. Opening Pressure, psi	End-to-End Lg.	Seal	Piston	Spring	For Use With	Temp. Range, ° F	Color		Each	Temp. Range, ° F	Color		Each
NPT Female Inlet × NPT Female Outlet



		1 1/2	1 1/2	80	Not Rated	100 psi @ 75° F	1	7 15/16"	Fluoroelastomer	CPVC	Polymer	Beverage, Food, Air, Ammonia, Argon, Carbon Dioxide, Chlorinated Water, Diesel Fuel, Drinking Water, Ethylene Glycol, Helium, Hydrochloric Acid, Kerosene, Krypton, Liquid Carbon Dioxide, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Water, Xenon	40 to 180	Light Gray	1868N18	0000000	—	—	———	0


		2	2	80	Not Rated	100 psi @ 75° F	1	8 1/2"	Fluoroelastomer	PVC	Polymer	Beverage, Food, Air, Ammonia, Argon, Carbon Dioxide, Chlorinated Water, Diesel Fuel, Drinking Water, Ethylene Glycol, Helium, Hydrochloric Acid, Kerosene, Krypton, Liquid Carbon Dioxide, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Water, Xenon	—	—	———	0	40 to 140	Gray	1868N17	0000000