Hydraulic Check Valves | McMaster-Carr

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78 Products

Inline Hydraulic Check Valves

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

NPTF Female Inlet × NPTF Female Outlet—Ball Check Valve

Image of Product. Front orientation. Hydraulic Check Valves. Inline Hydraulic Check Valves, NPTF Female Inlet × NPTF Female Outlet—Ball Check Valve.

NPTF (Dryseal) threads are compatible with NPT threads.

Brass Body—Brass valves have good corrosion resistance.

303 Stainless Steel Body—303 stainless steel valves are more corrosion resistant than brass valves.

	Inlet Connection		Outlet Connection
	Pipe Size	Dash Size	Pipe Size	Dash Size	Max. Flow Rate, gpm	Flow Coefficient (Cv)	Max. Pressure, psi	Min. Opening Pressure, psi	Port-to-Port Lg.	Hex Wd.	Mounting Position	Temp. Range, ° F		Each
Brass Body



		1/8	02	1/8	02	1.5	0.23	2,000	2.5	1 1/2"	11/16"	Any Angle	-15 to 400	0000000	000000


		1/4	04	1/4	04	3	0.54	2,000	2.5	2"	7/8"	Any Angle	-15 to 400	0000000	00000
		1/4	04	1/4	04	6	1.47	2,000	2.5	2"	3/4"	Any Angle	-30 to 200	0000000	00000
		3/8	06	3/8	06	5	0.83	2,000	2.5	2 1/4"	1 1/16"	Any Angle	-15 to 400	0000000	00000
		3/8	06	3/8	06	10	3.3	2,000	2.5	2 1/2"	1"	Any Angle	-30 to 200	0000000	00000
		1/2	08	1/2	08	8	1.47	2,000	2.5	2 3/4"	1 5/16"	Any Angle	-15 to 400	0000000	00000
		1/2	08	1/2	08	12	3.6	2,000	2.5	2 7/8"	1 1/8"	Any Angle	-30 to 200	0000000	00000
		3/4	12	3/4	12	12	1.9	2,000	2.5	3"	1 5/8"	Any Angle	-15 to 400	0000000	00000
		3/4	12	3/4	12	20	5.41	2,000	2.5	3 1/4"	1 3/8"	Any Angle	-30 to 200	0000000	00000


		Steel Body



				1/8	02	1/8	02	1.5	0.23	5,000	2.5	1 1/2"	11/16"	Any Angle	-15 to 400	0000000	00000


				1/4	04	1/4	04	3	0.54	5,000	2.5	2"	7/8"	Any Angle	-15 to 400	0000000	00000
				1/4	04	1/4	04	6	1.47	5,000	2.5	2"	3/4"	Any Angle	-30 to 200	0000000	00000
				3/8	06	3/8	06	5	0.83	5,000	2.5	2 1/4"	1 1/16"	Any Angle	-15 to 400	0000000	00000
				3/8	06	3/8	06	10	3.3	5,000	2.5	2 1/2"	1"	Any Angle	-30 to 200	0000000	00000
				1/2	08	1/2	08	8	1.47	5,000	2.5	2 3/4"	1 5/16"	Any Angle	-15 to 400	0000000	00000
				1/2	08	1/2	08	12	3.6	5,000	2.5	2 7/8"	1 1/8"	Any Angle	-30 to 200	0000000	00000
				3/4	12	3/4	12	12	1.9	5,000	2.5	3"	1 5/8"	Any Angle	-15 to 400	0000000	00000
				3/4	12	3/4	12	20	5.41	5,000	2.5	3 1/4"	1 3/8"	Any Angle	-30 to 200	0000000	00000


				303 Stainless Steel Body



						1/8	02	1/8	02	1.5	0.23	5,000	2.5	1 1/2"	11/16"	Any Angle	-15 to 400	0000000	00000


						1/4	04	1/4	04	3	0.54	5,000	2.5	2"	7/8"	Any Angle	-15 to 400	0000000	00000
						1/4	04	1/4	04	6	1.47	5,000	2.5	2"	3/4"	Any Angle	-30 to 200	0000000	000000
						3/8	06	3/8	06	5	0.83	5,000	2.5	2 1/4"	1 1/16"	Any Angle	-15 to 400	0000000	000000
						3/8	06	3/8	06	10	3.3	5,000	2.5	2 1/2"	1"	Any Angle	-30 to 200	0000000	000000
						1/2	08	1/2	08	8	1.47	5,000	2.5	2 3/4"	1 5/16"	Any Angle	-15 to 400	0000000	000000
						1/2	08	1/2	08	12	3.6	5,000	2.5	2 7/8"	1 1/8"	Any Angle	-30 to 200	0000000	000000
						3/4	12	3/4	12	20	5.41	5,000	2.5	3 1/4"	1 3/8"	Any Angle	-30 to 200	0000000	000000

NPTF Male Inlet × NPTF Male Outlet—Ball Check Valve

NPTF (Dryseal) threads are compatible with NPT threads.

Brass Body—Brass valves have good corrosion resistance.

303 Stainless Steel Body—303 stainless steel valves are more corrosion resistant than brass valves.

	Inlet Connection		Outlet Connection
	Pipe Size	Dash Size	Pipe Size	Dash Size	Max. Flow Rate, gpm	Flow Coefficient (Cv)	Max. Pressure, psi	Min. Opening Pressure, psi	Seal Material	Port-to-Port Lg.	Hex Wd.	Mounting Position	Temp. Range, ° F		Each
Brass Body



		1/8	02	1/8	02	1	0.17	2,000	2.5	—	1"	7/16"	Any Angle	-30 to 190	00000000	000000


		1/8	02	1/8	02	1	0.17	2,000	2.5	Buna-N	1"	7/16"	Any Angle	-30 to 190	00000000	00000
		1/4	04	1/4	04	2.5	0.56	2,000	2.5	—	1 3/8"	5/8"	Any Angle	-30 to 190	00000000	00000
		1/4	04	1/4	04	2.5	0.56	2,000	2.5	Buna-N	1 3/8"	5/8"	Any Angle	-30 to 190	00000000	00000
		3/8	06	3/8	06	6	1.31	2,000	2.5	—	1 5/8"	3/4"	Any Angle	-30 to 190	00000000	00000
		3/8	06	3/8	06	6	1.31	2,000	2.5	Buna-N	1 5/8"	3/4"	Any Angle	-30 to 190	00000000	00000
		1/2	08	1/2	08	10	2.71	2,000	2.5	—	2 1/8"	7/8"	Any Angle	-30 to 190	00000000	00000
		1/2	08	1/2	08	10	2.71	2,000	2.5	Buna-N	2 1/8"	7/8"	Any Angle	-30 to 190	00000000	00000
		3/4	12	3/4	12	15	3.4	2,000	2.5	Buna-N	2 1/4"	1 1/8"	Any Angle	-30 to 190	00000000	00000


		Steel Body



				1/4	04	1/4	04	2.5	0.56	3,000	2.5	—	1 3/8"	5/8"	Any Angle	-30 to 190	00000000	00000


				1/4	04	1/4	04	2.5	0.56	3,000	2.5	Buna-N	1 3/8"	5/8"	Any Angle	-30 to 190	00000000	00000
				3/8	06	3/8	06	6	1.31	3,000	2.5	—	1 5/8"	3/4"	Any Angle	-30 to 190	00000000	00000
				3/8	06	3/8	06	6	1.31	3,000	2.5	Buna-N	1 5/8"	3/4"	Any Angle	-30 to 190	00000000	00000
				1/2	08	1/2	08	10	2.71	3,000	2.5	—	2 1/8"	7/8"	Any Angle	-30 to 190	00000000	00000
				1/2	08	1/2	08	10	2.71	3,000	2.5	Buna-N	2 1/8"	7/8"	Any Angle	-30 to 190	00000000	00000


				303 Stainless Steel Body



						1/4	04	1/4	04	2.5	0.56	3,000	2.5	—	1 3/8"	5/8"	Any Angle	-30 to 190	00000000	00000


						1/4	04	1/4	04	2.5	0.56	3,000	2.5	Buna-N	1 3/8"	5/8"	Any Angle	-30 to 190	00000000	00000
						3/8	06	3/8	06	6	1.31	3,000	2.5	Buna-N	1 5/8"	3/4"	Any Angle	-30 to 190	00000000	00000

BSPT Female Inlet × BSPT Female Outlet—Ball Check Valve

	Inlet Connection		Outlet Connection
	Pipe Size	Dash Size	Pipe Size	Dash Size	Max. Flow Rate, gpm	Flow Coefficient (Cv)	Max. Pressure, psi	Min. Opening Pressure, psi	Port-to-Port Lg.	Hex Wd.	Mounting Position	Temp. Range, ° F		Each
Steel Body



		1/4	04	1/4	04	6	1.47	5,000	2.5	2"	3/4"	Any Angle	-30 to 200	000000	000000


		3/8	06	3/8	06	10	3.3	5,000	2.5	2 1/2"	1"	Any Angle	-30 to 200	000000	00000
		1/2	08	1/2	08	12	3.6	5,000	2.5	2 7/8"	1 1/8"	Any Angle	-30 to 200	000000	00000
		3/4	12	3/4	12	20	5.41	5,000	2.5	3 1/4"	1 3/8"	Any Angle	-30 to 200	000000	00000

BSPP Female Inlet × BSPP Female Outlet—Ball Check Valve

	Inlet Connection		Outlet Connection
	Pipe Size	Dash Size	Pipe Size	Dash Size	Max. Flow Rate, gpm	Flow Coefficient (Cv)	Max. Pressure, psi	Min. Opening Pressure, psi	Port-to-Port Lg.	Hex Wd.	Mounting Position	Temp. Range, ° F		Each
Steel Body



		1/4	04	1/4	04	6	1.47	5,000	2.5	2"	3/4"	Any Angle	-30 to 200	000000	000000


		3/8	06	3/8	06	10	3.3	5,000	2.5	2 1/2"	1"	Any Angle	-30 to 200	000000	00000
		1/2	08	1/2	08	12	3.6	5,000	2.5	2 7/8"	1 1/8"	Any Angle	-30 to 200	000000	00000
		3/4	12	3/4	12	20	5.41	5,000	2.5	3 1/4"	1 3/8"	Any Angle	-30 to 200	000000	00000

UN/UNF (SAE Straight) Male Inlet × UN/UNF (JIC) Male Outlet—Poppet Check Valve

UN/UNF (SAE Straight) thread connections have straight threads and are also known as O-ring Boss fittings.

Valves with a poppet have internal components that can handle any flow rates. The higher the flow rate of the hydraulic fluid coming into the valve, the lower the pressure the fluid is as it leaves the valve.

	Inlet Connection		Outlet Connection
	Thread Size	Dash Size	Thread Size	Dash Size	Fitting Connection	Max. Flow Rate	Flow Coefficient (Cv)	Max. Pressure, psi	Min. Opening Pressure, psi	Seal Material	Port-to-Port Lg.	Hex Wd.	Mounting Position	Temp. Range, ° F		Each
Steel Body



		7/16"-20	04	7/16"-20	04	37° Flared	Not Rated	Not Rated	5,000	5	Buna-N	1 1/4"	9/16"	Any Angle	-40 to 250	0000000	000000


		9/16"-18	06	9/16"-18	06	37° Flared	Not Rated	Not Rated	5,000	5	Buna-N	1 1/4"	3/4"	Any Angle	-40 to 250	0000000	00000
		3/4"-16	08	3/4"-16	08	37° Flared	Not Rated	Not Rated	5,000	5	Buna-N	1 5/8"	7/8"	Any Angle	-40 to 250	0000000	00000
		7/8"-14	10	7/8"-14	10	37° Flared	Not Rated	Not Rated	5,000	5	Buna-N	1 7/8"	1"	Any Angle	-40 to 250	0000000	000000
		1 1/16"-12	12	1 1/16"-12	12	37° Flared	Not Rated	Not Rated	5,000	5	Buna-N	2 1/8"	1 1/4"	Any Angle	-40 to 250	0000000	000000
		1 5/16"-12	16	1 5/16"-12	16	37° Flared	Not Rated	Not Rated	5,000	5	Buna-N	2 1/2"	1 1/2"	Any Angle	-40 to 250	0000000	000000

UN/UNF (JIC) Male Inlet × UN/UNF (SAE Straight) Male Outlet—Poppet Check Valve

UN/UNF (SAE Straight) thread connections have straight threads and are also known as O-ring Boss fittings.

	Inlet Connection			Outlet Connection
	Thread Size	Dash Size	Fitting Connection	Thread Size	Dash Size	Max. Flow Rate	Flow Coefficient (Cv)	Max. Pressure, psi	Min. Opening Pressure, psi	Seal Material	Port-to-Port Lg.	Hex Wd.	Mounting Position	Temp. Range, ° F		Each
Steel Body



		7/16"-20	04	37° Flared	7/16"-20	04	Not Rated	Not Rated	5,000	5	Buna-N	1 1/4"	9/16"	Any Angle	-40 to 250	0000000	000000


		9/16"-18	06	37° Flared	9/16"-18	06	Not Rated	Not Rated	5,000	5	Buna-N	1 1/4"	3/4"	Any Angle	-40 to 250	0000000	00000
		3/4"-16	08	37° Flared	3/4"-16	08	Not Rated	Not Rated	5,000	5	Buna-N	1 5/8"	7/8"	Any Angle	-40 to 250	0000000	00000
		7/8"-14	10	37° Flared	7/8"-14	10	Not Rated	Not Rated	5,000	5	Buna-N	1 7/8"	1"	Any Angle	-40 to 250	0000000	000000
		1 1/16"-12	12	37° Flared	1 1/16"-12	12	Not Rated	Not Rated	5,000	5	Buna-N	2 1/8"	1 1/4"	Any Angle	-40 to 250	0000000	000000
		1 5/16"-12	16	37° Flared	1 5/16"-12	16	Not Rated	Not Rated	5,000	5	Buna-N	2 1/2"	1 1/2"	Any Angle	-40 to 250	0000000	000000

UN/UNF (JIC) Male Inlet × UN/UNF (JIC) Male Outlet—Poppet Check Valve

	Inlet Connection			Outlet Connection
	Thread Size	Dash Size	Fitting Connection	Thread Size	Dash Size	Fitting Connection	Max. Flow Rate	Flow Coefficient (Cv)	Max. Pressure, psi	Min. Opening Pressure, psi	Seal Material	Port-to-Port Lg.	Hex Wd.	Mounting Position	Temp. Range, ° F		Each
Steel Body



		7/16"-20	04	37° Flared	7/16"-20	04	37° Flared	Not Rated	Not Rated	5,000	5	Buna-N	1 1/2"	9/16"	Any Angle	-40 to 250	0000000	000000


		9/16"-18	06	37° Flared	9/16"-18	06	37° Flared	Not Rated	Not Rated	5,000	5	Buna-N	1 1/2"	3/4"	Any Angle	-40 to 250	0000000	00000
		3/4"-16	08	37° Flared	3/4"-16	08	37° Flared	Not Rated	Not Rated	5,000	5	Buna-N	1 7/8"	7/8"	Any Angle	-40 to 250	0000000	00000
		7/8"-14	10	37° Flared	7/8"-14	10	37° Flared	Not Rated	Not Rated	5,000	5	Buna-N	2"	1"	Any Angle	-40 to 250	0000000	000000
		1 1/16"-12	12	37° Flared	1 1/16"-12	12	37° Flared	Not Rated	Not Rated	5,000	5	Buna-N	2 1/2"	1 1/4"	Any Angle	-40 to 250	0000000	000000
		1 5/16"-12	16	37° Flared	1 5/16"-12	16	37° Flared	Not Rated	Not Rated	5,000	5	Buna-N	2 5/8"	1 1/2"	Any Angle	-40 to 250	0000000	000000

Screw-In Hydraulic Check Valves

These hydraulic check valves open to allow flow in one direction and close when flow stops or reverses. Also known as cartridge valves, they screw into your mounting block.

Ball Check Valve

Image of Product. Front orientation. Hydraulic Check Valves. Screw-In Hydraulic Check Valves.

				Body—UN/UNF (SAE Straight)
	Deltrol Equivalent Model No.	Hydraforce Equivalent Model No.	Parker Equivalent Model No.	Thread Size	Dash Size	Max. Flow Rate, gpm	Flow Coefficient (Cv)	Max. Pressure, psi	Min. Opening Pressure, psi	Seal Material	Overall Ht.	Mounting Position		Each
Black Anodized Aluminum Body



		DCV-080-B-N-2	—	—	3/4"-16	08	5	Not Rated	3,000	2	Buna-N	1 1/4"	Any Angle	0000000	000000


		DCV-080-B-N-5	—	—	3/4"-16	08	5	Not Rated	3,000	5	Buna-N	1 1/4"	Any Angle	0000000	00000
		DCV-080-B-N-10	CV08-20-0-N-10	—	3/4"-16	08	5	Not Rated	3,000	10	Buna-N	1 1/4"	Any Angle	0000000	00000
		DCV-080-B-N-25	CV08-20-0-N-25	—	3/4"-16	08	5	Not Rated	3,000	25	Buna-N	1 1/4"	Any Angle	0000000	00000
		DCV-100-B-N-5	CV10-20-0-N-05	—	7/8"-14	10	20	Not Rated	3,000	5	Buna-N	1 5/8"	Any Angle	0000000	00000
		DCV-100-B-N-15	CV10-20-0-N-15	D04B2-1.0-N	7/8"-14	10	20	Not Rated	3,000	15	Buna-N	1 5/8"	Any Angle	0000000	00000
		DCV-100-B-N-30	CV10-20-0-N-30	—	7/8"-14	10	20	Not Rated	3,000	30	Buna-N	1 5/8"	Any Angle	0000000	00000
		DCV-100-B-N-60	—	D04B2-2.1-N	7/8"-14	10	20	Not Rated	3,000	60	Buna-N	1 5/8"	Any Angle	0000000	00000