Check Valves for Butane | McMaster-Carr

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	Pipe Size Pipe Size

1/8
1/4
3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
4
6
8

	Thread Type Thread Type

NPT

NPTF

BSPP

	For Use With For Use With	Show

Butane

	For Use With For Use With	Hide

Warning: Products have one, but not necessarily all, of the selected characteristics.

	Body Material Body Material

	Connection Style Connection Style


Threaded	Barbed

Flanged	Push to Connect

Threaded Union

	Minimum Opening Pressure Minimum Opening Pressure

	Check Valve Type Check Valve Type

	Maximum Pressure Maximum Pressure

	Mounting Orientation Mounting Orientation

Horizontal

Vertical

Any Position

	Valve Type Valve Type

Check

	Shape Shape

	Straight

	Connection Type Connection Type


Pipe	Tube

	Valve Function Valve Function

Backflow Prevention

	Actuation Actuation

Pressure

	Maximum Temperature Maximum Temperature

Less than 250° F

250° to 299° F

500° F or greater

	System of Measurement System of Measurement

Inch

	End-to-End Length End-to-End Length

	Seal Material Seal Material

Rubber

Stainless Steel

	Gender Gender

Female

Male

	Ball Material Ball Material

Stainless Steel

Plastic

	Connection Connection

Inlet

Outlet

	Color Color

	White
	Dark Gray
	Black
	Black/Blue
	Black/Green
	Black/Red

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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45 Products

About Backflow-Prevention Valves

Assembled View

Exploded View

To reduce installation time and allow for maintenance without detaching pipe connections, these valves have union fittings. The plastic body and fluoroelastomer seal provide excellent chemical resistance. Valves open to allow flow in one direction and close when flow stops or reverses.

PVC and CPVC valves come with unthreaded socket-connect female fittings in addition to the threaded NPT female fittings.

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.

For technical drawings and 3-D models, click on a part number.

PVC Plastic Body

For Use With:
BSPP thread type:
Butane, Kerosene, Drinking Water, Liquid Carbon Dioxide, Natural Gas, Nitric Acid, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Water
NPT thread type:
Citric Acid, Diesel Fuel, Drinking Water, Ethylene Glycol, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Nitric Acid, Oil, Phosphoric Acid, Salt Water, Sodium Hypochlorite, Water
Ball Material: PVC Plastic
Seal Material: Fluoroelastomer Rubber

BSPP Female × BSPP Female
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Min. Opening Pressure, psi	Temperature Range, °F	Color	End-to-End Lg.	Specifications Met		Each
1/2	6.3	150 psi @ 70° F	1	40° to 140°	Dark Gray	4 1/4"	ASTM D1784, NSF/ANSI 61	0000000	0000000
1	25	150 psi @ 70° F	1	40° to 140°	Dark Gray	5 3/16"	ASTM D1784, NSF/ANSI 61	0000000	000000

Threaded Check Valves for Harsh Chemicals

These valves open to allow flow in one direction and close when flow stops or reverses.

Valves for drinking water meet NSF/ANSI Standard 61.

Polypropylene valves are more corrosion resistant than PVC or CPVC valves.

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.

For technical drawings and 3-D models, click on a part number.

PVDF Plastic Body—Spring-Loaded Ball

For Use With: Air, Ammonia, Butane, Carbon Dioxide, Chlorine, Citric Acid, Deionized Water, Diesel Fuel, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Natural Gas, Nitric Acid, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Sodium Hydroxide, Toluene, Water, Xylene
Ball Material: 316 Stainless Steel
Spring Material: 316 Stainless Steel
Seal Material: Fluoroelastomer Rubber

NPT Male × NPT Male
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Min. Opening Pressure, psi	Temperature Range, °F	Color	End-to-End Lg.		Each
1/8	Not Rated	220 psi @ 70° F	2.5	40° to 180°	White	1"	00000000	000000
1/4	Not Rated	220 psi @ 70° F	2.5	40° to 180°	White	1 7/16"	00000000	00000
3/8	Not Rated	220 psi @ 70° F	2.5	40° to 180°	White	1 1/2"	00000000	00000
1/2	Not Rated	220 psi @ 70° F	2.5	40° to 180°	White	1 13/16"	00000000	00000

PVC Plastic Body—Ball

For Use With: Air, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Diesel Fuel, Drinking Water, Ethanol, Ethylene Glycol, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol, Mineral Spirits, Natural Gas, Oil, Oxygen, Phosphoric Acid, Potable Water, Propane, Salt Water, Soap Solutions, Sodium Hydroxide, Sodium Hypochlorite, Water
Ball Material: PVC Plastic
Seal Material: Fluoroelastomer Rubber

NPT Female × NPT Female
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Min. Opening Pressure, psi	Temperature Range, °F	Color	End-to-End Lg.	Specifications Met		Each
1/4	1	150 psi @ 70° F	1.5	35° to 140°	Dark Gray	3"	ASTM D1784, NSF/ANSI 61	0000000	000000
3/8	3	150 psi @ 70° F	1.5	35° to 140°	Dark Gray	3"	ASTM D1784, NSF/ANSI 61	0000000	00000
3	250	150 psi @ 70° F	1.5	35° to 140°	Dark Gray	10 9/16"	ASTM D1784, NSF/ANSI 61	0000000	000000
4	400	150 psi @ 70° F	1.5	35° to 140°	Dark Gray	12 15/16"	ASTM D1784, NSF/ANSI 61	0000000	000000

CPVC Plastic Body—Ball

For Use With: Air, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Diesel Fuel, Drinking Water, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Mineral Spirits, Natural Gas, Nitric Acid, Oxygen, Phosphoric Acid, Potable Water, Propane, Salt Water, Soap Solutions, Sodium Hydroxide, Sodium Hypochlorite, Sulfuric Acid, Water
Ball Material: CPVC Plastic
Seal Material: Fluoroelastomer Rubber

NPT Female × NPT Female
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Min. Opening Pressure, psi	Temperature Range, °F	Color	End-to-End Lg.	Specifications Met		Each
3	250	150 psi @ 70° F	1.5	35° to 190°	Dark Gray	10 9/16"	ASTM D1784, NSF/ANSI 61	0000000	0000000
4	400	150 psi @ 70° F	1.5	35° to 190°	Dark Gray	12 15/16"	ASTM D1784, NSF/ANSI 61	0000000	00000000

Polypropylene Plastic Body—Ball

For Use With: Air, Ammonia, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Drinking Water, Ethanol, Ethylene Glycol, Isopropyl Alcohol, Kerosene, Methanol, Natural Gas, Oil, Oxygen, Phosphoric Acid, Potable Water, Salt Water, Soap Solutions, Sodium Hydroxide, Water
Ball Material: Polypropylene Plastic
Seal Material: Fluoroelastomer Rubber

NPT Female × NPT Female
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Min. Opening Pressure, psi	Temperature Range, °F	Color	End-to-End Lg.	Specifications Met		Each
1/2	4.8	150 psi @ 70° F	1.5	35° to 200°	White	4 5/8"	ASTM D4101, NSF/ANSI 61	0000000	000000
3/4	7.7	150 psi @ 70° F	1.5	35° to 200°	White	4 3/4"	ASTM D4101, NSF/ANSI 61	0000000	000000
1	11	150 psi @ 70° F	1.5	35° to 200°	White	5 1/4"	ASTM D4101, NSF/ANSI 61	0000000	000000
1 1/2	45	150 psi @ 70° F	1.5	35° to 200°	White	6 3/4"	ASTM D4101, NSF/ANSI 61	0000000	000000
2	130	150 psi @ 70° F	1.5	35° to 200°	White	8"	ASTM D4101, NSF/ANSI 61	0000000	000000

Ultra-Chemical-Resistant Threaded Check Valves

Female × Female

Female × Male

Male × Female

Male × Male

For Use With: Acetone, Ammonia, Butane, Carbon Dioxide, Citric Acid, Diesel Fuel, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol, Methyl Ethyl Ketone, Mineral Spirits, Natural Gas, Nitric Acid, Nitrogen, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide, Sodium Hypochlorite, Sulfuric Acid, Toluene, Water, Xylene
Piston Material: PTFE Plastic
Spring Material: PTFE Plastic

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.

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.

For technical drawings and 3-D models, click on a part number.

PFA Plastic Body
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Min. Opening Pressure, psi	Temperature Range, °F	Color	End-to-End Lg.		Each
NPT Female × NPT Female
1/4	0.75	125 psi @ 150° F	1	0° to 210°	White	2 3/8"	00000000	0000000
1/2	4	100 psi @ 150° F	1	0° to 210°	White	3 3/8"	00000000	000000
NPT Female × NPT Male
1/4	0.75	125 psi @ 150° F	1	0° to 210°	White	2 7/16"	00000000	000000
NPT Male × NPT Female
1/4	0.75	125 psi @ 150° F	1	0° to 210°	White	2 1/16"	00000000	000000
NPT Male × NPT Male
1/4	0.75	125 psi @ 150° F	1	0° to 210°	White	2 7/16"	00000000	000000

Check Valves with Barbed Fittings for Harsh Chemicals

Diaphragm Check Valve

Prevent backflow in chemical tubing lines. These valves have barbed fittings that grip onto tubing, providing a secure hold. The plastic body and fluoroelastomer seal provide excellent chemical resistance. Valves open to allow flow in one direction and close when flow stops or reverses.

PVDF valve resists abrasion and UV light.

For technical drawings and 3-D models, click on a part number.

PVDF Plastic Body—Diaphragm

For Use With: Air, Butane, Chlorine, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Gasoline, Hydrochloric Acid, Nitric Acid, Oil, Propane, Salt Water, Soap Solutions, Sodium Hypochlorite, Sulfuric Acid, Water
Diaphragm Material: Fluoroelastomer Rubber
Seal Material: Fluoroelastomer Rubber

Barbed × Barbed
For Tube ID	Max. Pressure	Min. Opening Pressure, psi	Temperature Range, °F	Color	End-to-End Lg.		Each
1/4"	15 psi @ 70° F	0.5	-20° to 250°	White	1 21/32"	00000000	00000

Check Valves with Push-to-Connect Fittings for Harsh Chemicals

For Use With: Air, Argon, Butane, Carbon Dioxide, Chlorine, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Gasoline, Helium, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Krypton, Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hypochlorite, Sulfuric Acid, Toluene, Water, Xenon, Xylene
Piston Material: PVDF Plastic
Spring Material: Stainless Steel
Seal Material: Fluoroelastomer Rubber

Connect your outlet tubing into the push-to-connect fittings—no heat, solder, or flux required. These valves have a PVDF body and a fluoroelastomer seal for excellent chemical resistance. They open to allow flow in one direction and close when flow stops or reverses.

For technical drawings and 3-D models, click on a part number.

PVDF Plastic Body
For Tube OD	Pipe Size	Max. Pressure	Min. Opening Pressure, psi	Temperature Range, °F	Color	End-to-End Lg.		Each
Push-to-Connect Inlet × NPTF Male Outlet
3/8"	1/4	300 psi @ 70° F	0.5	0° to 250°	Black	1 3/8"	0000000	000000
3/8"	1/4	300 psi @ 70° F	1.5	0° to 250°	Black/Blue	1 3/8"	0000000	00000
3/8"	1/4	300 psi @ 70° F	3	0° to 250°	Black/Red	1 3/8"	0000000	00000
3/8"	1/4	300 psi @ 70° F	4	0° to 250°	Black/Green	1 3/8"	0000000	00000

High-Temperature Threaded Check Valves for Oil and Fuel

For Use With: Butane, Diesel Fuel, Fuel Oil, Natural Gas, Propane
Piston Material: Brass
Spring Material: 316 Stainless Steel
Seal Material: Fluoroelastomer Rubber

For more than twice the temperature rating of standard check valves for oil and fuel, these have a heat-resistant fluoroelastomer seal that can withstand temperatures up to 500° F. They open to allow flow in one direction and close when flow stops or reverses.

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.

For technical drawings and 3-D models, click on a part number.

Bronze Body
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Min. Opening Pressure, psi	Temperature Range, °F	End-to-End Lg.		Each
NPT Female × NPT Female
1/4	Not Rated	300 psi @ 70° F	2	50° to 500°	2 1/4"	0000000	000000
3/8	Not Rated	300 psi @ 70° F	2	50° to 500°	2 1/4"	0000000	00000
1/2	Not Rated	300 psi @ 70° F	2	50° to 500°	2 1/2"	0000000	000000
3/4	Not Rated	300 psi @ 70° F	2	50° to 500°	2 3/4"	0000000	000000
1	Not Rated	300 psi @ 70° F	2	50° to 500°	3 3/8"	0000000	000000
1 1/4	Not Rated	300 psi @ 70° F	2	50° to 500°	3 3/4"	0000000	000000

Flange-Mount Check Valves for Oil and Fuel

Shown with Flanges (Not Included)

For Use With: Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Oil, Propane
Disc Material: 316 Stainless Steel
Seal Material: 316 Stainless Steel

Install these valves between ANSI flanges. ANSI flanges are sold separately. All valves open to allow flow in one direction and close when flow stops or reverses. Body is 316 stainless steel for excellent corrosion resistance.

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.

For technical drawings and 3-D models, click on a part number.

316 Stainless Steel Body
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Min. Opening Pressure, psi	Temperature Range, °F	End-to-End Lg.	For Flange Class		Each
Flanged × Flanged
2	48	275 psi @ 70° F	1.25	-20° to 1000°	2 3/8"	150, 300, 600	0000000	0000000
2 1/2	90	275 psi @ 70° F	1.25	-20° to 1000°	2 5/8"	150, 300, 600	0000000	000000
3	171	275 psi @ 70° F	1.25	-20° to 1000°	2 7/8"	150, 300, 600	0000000	000000
4	291	275 psi @ 70° F	1.25	-20° to 1000°	2 7/8"	150, 300	0000000	000000
6	705	275 psi @ 70° F	1.25	-20° to 1000°	3 7/8"	150, 300	0000000	00000000
8	1,795	275 psi @ 70° F	1.25	-20° to 1000°	5"	150, 300	0000000	00000000

Pipeline Flame Arresters

For Use With: Butane, Natural Gas, Propane
Flame-Arresting Element Material: 316 Stainless Steel

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.

For technical drawings and 3-D models, click on a part number.

Aluminum Body
Pipe Size	Max. Pressure	Max. Temperature, °F	End-to-End Lg.		Each
NPT Female
1/4	25 psi @ 176° F	176°	3"	0000000	0000000
1/2	25 psi @ 176° F	176°	3 3/4"	0000000	000000
3/4	25 psi @ 176° F	176°	3 3/4"	0000000	000000
1	25 psi @ 176° F	176°	3 3/4"	0000000	000000
1 1/2	25 psi @ 176° F	176°	3 3/4"	0000000	000000
2	25 psi @ 176° F	176°	4 3/4"	0000000	000000

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About Backflow-Prevention Valves

Easy-to-Install Threaded Check Valves for Harsh Chemicals

Threaded Check Valves for Harsh Chemicals

Ultra-Chemical-Resistant Threaded Check Valves

Check Valves with Barbed Fittings for Harsh Chemicals

Check Valves with Push-to-Connect Fittings for Harsh Chemicals

High-Temperature Threaded Check Valves for Oil and Fuel

Flange-Mount Check Valves for Oil and Fuel

Pipeline Flame Arresters