Plastic Float Valves | McMaster-Carr

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	Valve Body Material Valve Body Material

Brass

Plastic

Stainless Steel

	Float Material Float Material

ABS Plastic

Polyethylene Plastic

Polypropylene Plastic

PVC Plastic

	Inlet Pipe Size Inlet Pipe Size

	For Use With For Use With

Water

Beverage

Food

	Maximum Pressure Maximum Pressure

Less than 100 psi

100 to 124 psi

125 to 149 psi

	Inlet Connection Type Inlet Connection Type


Pipe	Tube

	Flow Rate Flow Rate

	Inlet Gender Inlet Gender

Female

Male

	Float Rod Length Float Rod Length

	Valve Type Valve Type

Float

	Float Rod Material Float Rod Material

Brass

Stainless Steel

Plastic

	Outlet Connection Type Outlet Connection Type

Pipe

Discharge

Tube

	Inlet Connection Style Inlet Connection Style

Threaded

Compression

	Valve Body Shape Valve Body Shape

Elbow

Straight

	Seal Material Seal Material

Buna-N Rubber

Fluoroelastomer Rubber

Silicone Rubber

Neoprene Rubber

Santoprene Rubber

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

35° F

50° F

	Outlet Pipe Size Outlet Pipe Size

1/2

3/4

1 1/2

	For Container Type For Container Type

Open Tank

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Float Width Float Width

	Discharge Slot Length Discharge Slot Length

	Discharge Slot Width Discharge Slot Width

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31 Products

About Pipe Size

With Bobbing Polypropylene Float

Control water levels in processing tanks and cooling towers.

Use valves with bobbing float in tanks where the float may get jostled. The float moves independently of the rod, so valve operation is not disrupted.

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

Inlet			Outlet						Float Rod
Pipe Size	Thread Type	Gender	Pipe Size	Thread Type	Gender	Flow Rate	Max. Pressure, psi	Float Dia.	Lg.	Thread Size	Thread Type	For Container Type	Float Material	Seal Material	Temp. Range, °F		Each
For Use With Water
Elbow Valve Body With Bobbing Float
1/2	NPT	Male	1/2	NPT	Male	15 gpm @ 50 psi	125	5"	10"	1/4"-20	UNC	Open Tank	Polypropylene Plastic	Buna-N Rubber	35° to 180°	0000000	000000
3/4	NPT	Male	3/4	NPT	Male	26.3 gpm @ 50 psi	100	5"	10"	1/4"-20	UNC	Open Tank	Polypropylene Plastic	Buna-N Rubber	35° to 180°	0000000	00000
1	NPT	Male	1	NPT	Male	49.7 gpm @ 50 psi	100	6"	10"	1/4"-20	UNC	Open Tank	Polypropylene Plastic	Buna-N Rubber	35° to 180°	0000000	00000

Extra-Compact Plastic Float Valves

Control the water level in spaces where a rod and lever won’t fit; these float valves have an internal float and connect to your pipe. When the water level reaches the bottom of the valve, the float rises to stop the flow. The discharge outlet is unthreaded and releases contents into your tank.

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

Inlet						Overall
Pipe Size	Thread Type	Gender	Discharge Hole Dia.	Flow Rate	Max. Pressure, psi	Dia.	Ht.	For Container Type	Float Material	Seal Material	Temp. Range, °F		Each
For Use With Water
Straight Valve Body
1/2	NPT	Female	3/8"	22 gpm @ 50 psi	65	2 13/16"	5 3/4"	Open Tank	ABS Plastic	Silicone Rubber	35° to 150°	00000000	000000
1	NPT	Female	3/8"	70 gpm @ 50 psi	100	3 3/4"	5"	Open Tank	ABS Plastic	Silicone Rubber	35° to 150°	00000000	00000

PVC Float Valves

These float valves have a temperature range of 35° to 110° F. Use them to control water levels in processing tanks and cooling towers.

Valves with extended threads can be installed through a tank wall.

Valves with a discharge outlet release contents into your tank; the outlet is unthreaded.

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

With 318 Stainless Steel Float Rod

Inlet			Outlet						Float Rod
Pipe Size	Thread Type	Gender	Pipe Size	Thread Type	Gender	Flow Rate	Max. Pressure, psi	Float Dia.	Lg.	Thread Size	Thread Type	For Container Type	Float Material	Seal Material	Temp. Range, °F		Each
Elbow Valve Body—For Use With Water
3/4	NPT	Male	3/4	NPT	Male	15 gpm @ 50 psi	100	6"	12"	1/4"-20	UNC	Open Tank	PVC Plastic	Santoprene Rubber	35° to 110°	0000000	000000
3/4	NPT	Male	3/4	NPT	Male	32 gpm @ 50 psi	100	6"	12"	1/4"-20	UNC	Open Tank	PVC Plastic	Santoprene Rubber	35° to 110°	0000000	00000

With 318 Stainless Steel Float Rod and Extended Threads

With 318 Stainless Steel Float Rod And Extended Threads

Inlet			Outlet						Float Rod
Pipe Size	Thread Type	Gender	Pipe Size	Thread Type	Gender	Flow Rate	Max. Pressure, psi	Float Dia.	Lg.	Thread Size	Thread Type	For Container Type	Float Material	Seal Material	Temp. Range, °F		Each
Elbow Valve Body—For Use With Water
3/4	NPT	Male	3/4	NPT	Male	15 gpm @ 50 psi	100	6"	12"	1/4"-20	UNC	Open Tank	PVC Plastic	Santoprene Rubber	35° to 110°	0000000	000000
3/4	NPT	Male	3/4	NPT	Male	32 gpm @ 50 psi	100	6"	12"	1/4"-20	UNC	Open Tank	PVC Plastic	Santoprene Rubber	35° to 110°	0000000	00000

With Polypropylene Plastic Float Rod

Inlet						Float
Pipe Size	Thread Type	Gender	Discharge Hole Dia.	Flow Rate	Max. Pressure, psi	Dia.	Rod Lg.	For Container Type	Float Material	Seal Material	Temp. Range, °F		Each
Straight Valve Body—For Use With Water
1/4	NPT	Female	1/4"	3 gpm @ 40 psi	65	4 1/2"	8 1/8"	Open Tank	Polypropylene Plastic	Fluoroelastomer Rubber	35° to 110°	0000000	0000000
1/2	NPT	Female	1/2"	3 gpm @ 40 psi	65	4 1/2"	8 1/8"	Open Tank	Polypropylene Plastic	Fluoroelastomer Rubber	35° to 110°	0000000	000000
3/4	NPT	Female	3/4"	7 gpm @ 40 psi	65	4 3/4"	10 1/4"	Open Tank	Polypropylene Plastic	Fluoroelastomer Rubber	35° to 110°	0000000	000000
1	NPT	Female	1"	12.5 gpm @ 40 psi	65	4 3/4"	10 1/4"	Open Tank	Polypropylene Plastic	Fluoroelastomer Rubber	35° to 110°	0000000	000000

Polypropylene Float Valves

Able to withstand higher temperatures than PVC float valves, these valves have a temperature range of 35° to 175° F. Use them to control water levels in processing tanks and cooling towers. Valves have an unthreaded discharge outlet, which releases contents into a tank.

Valves with compression inlet connections are for small-scale applications using tubing.

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

With Brass Float Rod

			Discharge Slot				Float			Float Rod
For Tube OD	Inlet Tube Connection Type	For Tube Material	Wd.	Lg.	Flow Rate	Max. Pressure, psi	Lg.	Wd.	Ht.	Lg.	Thread Size	Thread Type	For Container Type	Float Material	Seal Material	Temp. Range, °F		Each
Straight Valve Body For Use With Water
1/4"	Compression	Plastic	3/8"	19/32"	1.59 gpm @ 55 psi	125	3 3/4"	2 1/2"	1 1/2"	6"	8-32	UNC	Open Tank	Polyethylene Plastic	Buna-N Rubber	35° to 175°	0000000	00000
1/4"	Compression	Copper	9/32"	3/4"	1.59 gpm @ 55 psi	125	3 3/4"	2 1/2"	1 1/2"	6"	8-32	UNC	Open Tank	Polyethylene Plastic	Buna-N Rubber	35° to 175°	0000000	0000

With Polypropylene Plastic Float Rod

Inlet						Float
Pipe Size	Thread Type	Gender	Discharge Hole Dia.	Flow Rate	Max. Pressure, psi	Dia.	Rod Lg.	For Container Type	Float Material	Seal Material	Temp. Range, °F		Each
Straight Valve Body For Use With Water
1/4	NPT	Female	1/4"	3 gpm @ 40 psi	65	4 1/2"	8 1/8"	Open Tank	Polypropylene Plastic	Fluoroelastomer Rubber	35° to 175°	0000000	0000000
1/2	NPT	Female	1/2"	3 gpm @ 40 psi	65	4 1/2"	8 1/8"	Open Tank	Polypropylene Plastic	Fluoroelastomer Rubber	35° to 175°	0000000	000000
3/4	NPT	Female	3/4"	7 gpm @ 40 psi	65	4 3/4"	10 1/4"	Open Tank	Polypropylene Plastic	Fluoroelastomer Rubber	35° to 175°	0000000	000000
1	NPT	Female	1"	12.5 gpm @ 40 psi	65	4 3/4"	10 1/4"	Open Tank	Polypropylene Plastic	Fluoroelastomer Rubber	35° to 175°	0000000	000000

Compact Metal Float Valves

Smaller than other float valves, these are sized for containers with limited space. Use them to control water levels in processing tanks and cooling towers.

Valves with a discharge outlet release contents into your tank; the outlet is unthreaded.

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

Compression Inlet × Discharge Outlet

	Discharge Slot				Float			Float Rod
For Inlet Tube OD	Wd.	Lg.	Flow Rate	Max. Pressure, psi	Lg.	Wd.	Ht.	Lg.	Thread Size	Thread Type	For Container Type	Float Material	Seal Material	Temp. Range, °F		Each
Elbow Valve Body—For Use With Water
1/4"	9/32"	9/32"	1.5 gpm @ 50 psi	125	3 3/4"	2 5/8"	1 7/16"	5"	8-32	UNC	Open Tank	Polyethylene Plastic	Buna-N Rubber	50° to 175°	0000000	000000
1/4"	13/32"	13/32"	1.3 gpm @ 50 psi	125	3 11/16"	2 1/2"	1 5/16"	5 5/8"	8-32	UNC	Open Tank	Polyethylene Plastic	Buna-N Rubber	50° to 175°	0000000	0000

NPT Male Inlet × Discharge Outlet

	Discharge Slot				Float			Float Rod
Inlet Pipe Size	Wd.	Lg.	Flow Rate	Max. Pressure, psi	Lg.	Wd.	Ht.	Lg.	Thread Size	Thread Type	For Container Type	Float Material	Seal Material	Temp. Range, °F		Each
Elbow Valve Body—For Use With Water
3/8	9/32"	9/32"	1.5 gpm @ 50 psi	125	3 3/4"	2 5/8"	1 7/16"	5"	8-32	UNC	Open Tank	Polyethylene Plastic	Buna-N Rubber	50° to 175°	0000000	000000
3/8	9/32"	9/32"	2 gpm @ 50 psi	125	5 1/4"	1 1/2"	1 1/2"	5"	8-32	UNC	Open Tank	Polypropylene Plastic	Buna-N Rubber	50° to 175°	0000000	00000
1/2	13/32"	13/32"	1.3 gpm @ 50 psi	125	3 3/4"	2 1/16"	2 1/16"	5 5/8"	8-32	UNC	Open Tank	Polyethylene Plastic	Buna-N Rubber	50° to 175°	0000000	00000

NPT Male Inlet × Compression Outlet

		Discharge Slot				Float			Float Rod
Inlet Pipe Size	For Outlet Tube OD	Wd.	Lg.	Flow Rate	Max. Pressure, psi	Lg.	Wd.	Ht.	Lg.	Thread Size	Thread Type	For Container Type	Float Material	Seal Material	Temp. Range, °F		Each
Elbow Valve Body—For Use With Water
1/2	3/8"	5/16"	5/16"	4 gpm @ 50 psi	125	3 11/16"	2 1/2"	1 5/16"	5 5/8"	8-32	UNC	Open Tank	Polyethylene Plastic	Buna-N Rubber	50° to 175°	0000000	000000
1/2	3/8"	3/8"	3/8"	2.5 gpm @ 50 psi	125	3 3/4"	2 5/8"	1 7/16"	5"	8-32	UNC	Open Tank	Polyethylene Plastic	Buna-N Rubber	50° to 175°	0000000	00000

Compact Plastic Float Valves

Smaller than other float valves, these are sized for containers with limited space. They also minimize noisy water hammer. Use them to control water levels in processing tanks and cooling towers.

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

Inlet			Outlet					Float
Pipe Size	Thread Type	Gender	Pipe Size	Thread Type	Gender	Flow Rate	Max. Pressure, psi	Lg.	Wd.	Rod Lg.	Includes	For Container Type	Float Material	Seal Material	Temp. Range, °F		Each
For Use With Water
Elbow Valve Body
1	NPT	Female	1	NPT	Female	84 gpm @ 50 psi	80	4"	3 1/4"	5 3/4"	Adapters to reduce 3/8, 1/2, and 3/4 pipe size	Open Tank	Polyethylene Plastic	Neoprene Rubber	35° to 160°	0000000	000000
1 1/2	NPT	Female	1 1/2	NPT	Female	182 gpm @ 50 psi	80	4"	3 1/4"	5 3/4"	__	Open Tank	Polyethylene Plastic	Neoprene Rubber	35° to 160°	0000000	000000

Compact Float Valves for Food and Beverage

With Polypropylene Float

Smaller than other float valves, these are sized for containers with limited space. They meet NSF/ANSI Standard 169 for food-equipment components and have excellent corrosion resistance. The discharge outlet is unthreaded and releases contents into your tank.

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

Inlet			Discharge Slot				Float			Float Rod
Pipe Size	Thread Type	Gender	Wd.	Lg.	Flow Rate	Max. Pressure, psi	Lg.	Wd.	Ht.	Lg.	Thread Size	Thread Type	For Container Type	Specifications Met	Float Material	Seal Material	Temp. Range, °F		Each
316 Stainless Steel Straight Valve Body
1/4	NPT	Male	9/32"	3/4"	1.6 gpm @ 50 psi	125	3 3/4"	2 11/16"	1 1/4"	6"	8-32	UNC	Open Tank	NSF/ANSI 169	Polypropylene Plastic	Fluoroelastomer Rubber	35° to 175°	0000000	000000

Compact Float Valves with Plastic Reservoir for Food and Beverage

With Top Inlet

With Side Inlet

Commonly used in ice-making machines, these valves have floats that rest inside a clear plastic reservoir. They meet NSF/ANSI 169 standards for food equipment components. Polypropylene plastic floats are FDA compliant for direct food contact. The discharge outlet is unthreaded and releases contents into your tank. The drain holes are located on the bottom for connecting to soft tubing (not included).

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

Inlet				Discharge Slot						Reservoir
Location	Tube Connection Type	For Tube OD	No. of Drain Holes	Wd.	Lg.	For Tube ID	Flow Rate	Max. Pressure, psi	Float Rod Lg.	Lg.	Wd.	Ht.	Specifications Met	Features	Float Material	Seal Material	Temp. Range, °F		Each
Elbow Valve Body
Top	Compression	1/4"	2	5/16"	5/16"	1/2"	0.3 gpm @ 55 psi	125	4"	5"	2 1/2"	4 1/2"	FDA Compliant 21 CFR 177.1520, NSF/ANSI 169	Removable Reservoir Cover	Polypropylene Plastic	Buna-N Rubber	35° to 175°	0000000	000000
Straight Valve Body
Side	Compression	1/4"	2	13/32"	1/4"	1/2"	0.3 gpm @ 55 psi	125	3"	5"	2 1/2"	4 1/2"	FDA Compliant 21 CFR 177.1520, NSF/ANSI 169	Removable Reservoir Cover	Polypropylene Plastic	Buna-N Rubber	35° to 175°	0000000	00000

About Pipe Size

Brass Float Valves

Extra-Compact Plastic Float Valves

PVC Float Valves

Polypropylene Float Valves

Compact Metal Float Valves

Compact Plastic Float Valves

Compact Float Valves for Food and Beverage

Compact Float Valves with Plastic Reservoir for Food and Beverage