Valves for Chemicals | McMaster-Carr

A plastic body and fluoroelastomer seal stand up to harsh chemicals. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.

Polypropylene Body—Polypropylene valves withstand higher temperatures than PVC valves.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Range, psi	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F		Each
NPT Female







				Polypropylene Body—Fluoroelastomer Seal

				1/2	Side	125	1/2	Side	10 to 80	Screw	3"	Chemicals	35 to 180	45965K41	0000000


				3/4	Side	125	3/4	Side	10 to 80	Screw	3 15/16"	Chemicals	35 to 180	45965K42	000000
				1	Side	125	1	Side	10 to 80	Screw	3 15/16"	Chemicals	35 to 180	45965K43	000000




						PVC Body—Fluoroelastomer Seal

						1/2	Side	125	1/2	Side	10 to 80	Screw	3"	Chemicals	40 to 140	45965K31	000000


						3/4	Side	125	3/4	Side	10 to 80	Screw	3 15/16"	Chemicals	40 to 140	45965K32	000000
						1	Side	125	1	Side	10 to 80	Screw	3 15/16"	Chemicals	40 to 140	45965K33	000000
						1 1/2	Side	125	1 1/2	Side	10 to 80	Screw	6 1/8"	Chemicals	40 to 140	45965K34	00000000
						2	Side	125	2	Side	10 to 80	Screw	6"	Chemicals	40 to 140	45965K35	00000000

Float Valves for Chemicals


Elbow Valve Body	Straight Valve Body

Made of stainless steel, these float valves have excellent corrosion resistance even when exposed to chemicals.

For Open Tanks—Valves for open tanks are for use only in an open tank.

For Closed Tanks—Valves for closed tanks are designed to withstand the pressure in a closed tank.

	Inlet				Outlet							Float Rod				For Open Tanks, PTFE Seal			For Closed Tanks, PTFE Seal
	Pipe Size	Thread Type	Gender	Connection	Connection Port	Pipe Size	Thread Type	Gender	Flow Rate @ Pressure	Max. Pressure, psi	Float Dia.	Lg.	Pipe Size	Thread Type	Float Material	Temp. Range, ° F		Each	Temp. Range, ° F		Each
For Alcohol, Chemicals, Acetone, Hydraulic Fluid







				316 Stainless Steel Float Rod—Elbow Valve Body

				1/2	NPT	Female	Threaded	Pipe	1/2	NPT	Female	30 gpm @ 50 psi	100	5"	16"	1/8	NPT	304 Stainless Steel	—	———	0	35 to 350	47395K51	0000000


				1/2	NPT	Female	Threaded	Pipe	1/2	NPT	Female	30 gpm @ 50 psi	100	5"	16"	1/4	NPT	304 Stainless Steel	35 to 350	7903K51	0000000	—	———	0
				3/4	NPT	Female	Threaded	Pipe	3/4	NPT	Female	50 gpm @ 50 psi	100	5"	16"	1/8	NPT	304 Stainless Steel	—	———	0	35 to 350	47395K52	000000
				3/4	NPT	Female	Threaded	Pipe	3/4	NPT	Female	50 gpm @ 50 psi	100	5"	16"	1/4	NPT	304 Stainless Steel	35 to 350	7903K52	000000	—	———	0
				1	NPT	Female	Threaded	Pipe	1	NPT	Female	75 gpm @ 50 psi	100	6"	18"	1/4	NPT	304 Stainless Steel	35 to 350	7903K53	000000	35 to 350	47395K53	00000000
				1 1/2	NPT	Female	Threaded	Pipe	1 1/2	NPT	Female	125 gpm @ 50 psi	100	6"	18"	1/4	NPT	304 Stainless Steel	35 to 350	7903K54	00000000	35 to 350	47395K54	00000000




						316 Stainless Steel Float Rod—Straight Valve Body

						1/2	NPT	Female	Threaded	Pipe	1/2	NPT	Female	30 gpm @ 50 psi	100	5"	16"	1/4	NPT	304 Stainless Steel	35 to 350	7903K71	000000	35 to 350	47395K71	000000


						3/4	NPT	Female	Threaded	Pipe	3/4	NPT	Female	50 gpm @ 50 psi	100	5"	16"	1/4	NPT	304 Stainless Steel	35 to 350	7903K72	000000	35 to 350	47395K72	000000
						1	NPT	Female	Threaded	Pipe	1	NPT	Female	75 gpm @ 50 psi	100	6"	18"	1/4	NPT	304 Stainless Steel	35 to 350	7903K73	000000	35 to 350	47395K73	00000000
						1 1/2	NPT	Female	Threaded	Pipe	1 1/2	NPT	Female	125 gpm @ 50 psi	100	6"	18"	1/4	NPT	304 Stainless Steel	35 to 350	7903K74	00000000	35 to 350	47395K74	00000000

Float Valve Bodies for Chemicals


	Round Rotating Plunger

Often found in tanks that are frequently washed down, these float valve bodies are 316 stainless steel, so they resist corroding from harsh cleaners. To create custom float valves, combine these valve bodies with floats and rods. Thread them onto pipe to direct water to a specific location. They’re frequently used to send water to the bottom of a tank to limit splashing and disruptions at the surface level. When the valve opens and closes, the plunger rotates freely. This means the internal seal wears evenly, extending the life of the valve body.

Teflon® PTFE Seal—Valve bodies with a Teflon® PTFE seal withstand higher temperatures than those with a Viton® fluoroelastomer seal.

	Inlet			Outlet									Viton® Fluoroelastomer Seal			Teflon® PTFE Seal
	Pipe Size	Thread Type	Gender	Pipe Size	Thread Type	Gender	Flow Rate @ Pressure	Max. Pressure, psi	For Rod Thread Size	Material	Plunger Material	Plunger Type	Temp. Range, ° F		Each	Temp. Range, ° F		Each
90° Elbow



		1/2	NPT	Female	1/2	NPT	Female	48 gpm @ 50 psi	85	1/4"-20	316 Stainless Steel	316 Stainless Steel	Rotating	35 to 450	4531K54	0000000	35 to 550	4531K14	0000000


		3/4	NPT	Female	3/4	NPT	Female	48 gpm @ 50 psi	85	1/4"-20	316 Stainless Steel	316 Stainless Steel	Rotating	35 to 450	4531K56	000000	35 to 550	4531K16	000000
		1	NPT	Female	3/4	NPT	Female	57.5 gpm @ 50 psi	85	3/8"-16	316 Stainless Steel	316 Stainless Steel	Rotating	35 to 450	4531K59	000000	35 to 550	4531K19	000000
		1 1/4	NPT	Female	1 1/4	NPT	Female	140 gpm @ 50 psi	100	3/8"-16	316 Stainless Steel	316 Stainless Steel	Rotating	—	———	0	35 to 550	4531K21	00000000
		1 1/2	NPT	Female	1 1/2	NPT	Female	140 gpm @ 50 psi	100	3/8"-16	316 Stainless Steel	316 Stainless Steel	Rotating	—	———	0	35 to 550	4531K23	00000000
		2	NPT	Female	2	NPT	Female	140 gpm @ 50 psi	100	3/8"-16	316 Stainless Steel	316 Stainless Steel	Rotating	35 to 450	4531K65	00000000	35 to 550	4531K25	00000000