Hydraulic Check Valves | McMaster-Carr

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

	Minimum Opening Pressure Minimum Opening Pressure

	Maximum Pressure Maximum Pressure

2,000 psi

3,000 psi

5,000 psi

	Pipe Size Pipe Size

	Thread Type Thread Type

UN/UNF (SAE Straight)

UN/UNF (ORFS)

	Body Material Body Material

	Maximum Flow Rate Maximum Flow Rate

	Actuation Actuation

Pressure

	Check Valve Type Check Valve Type

Ball

Poppet

	Dash Size Dash Size

	Valve Type Valve Type

Check

	Valve Function Valve Function

Backflow Prevention

	Connection Connection

Inlet

Outlet

	Gender Gender

Female

Male

	Ball Material Ball Material

Stainless Steel

Steel

	Flow Coefficient (Cv) Flow Coefficient (Cv)

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

RoHS Compliant

RoHS Compliant with
Exemptions

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

DFARS Specialty Metals
COTS-Exempt

	Maximum Temperature Maximum Temperature

Less than 250° F

250° to 299° F

400° to 499° F

	System of Measurement System of Measurement

Inch

	Port-to-Port Length Port-to-Port Length

	Mounting Orientation Mounting Orientation

Any Position

	Hex Width Hex Width

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

REACH Compliant

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Backflow-Prevention Inline Hydraulic Valves

Also known as check valves, these open to allow flow in one direction and close when flow stops or reverses.

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.

Brass valves have good corrosion resistance. 303 stainless steel valves are more corrosion resistant than brass valves.

NPTF (Dryseal) threads are compatible with NPT threads.

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

UN/UNF (ORFS) threads are also known as O-ring face seal threads.

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

NPTF Female Inlet × NPTF Female Outlet—Ball Check Valve

NPTF — NPTF (Female)

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 Orientation	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 Position	-15° to 400°	0000000	000000
1/4	04	1/4	04	3	0.54	2,000	2.5	2"	7/8"	Any Position	-15° to 400°	0000000	00000
1/4	04	1/4	04	6	1.47	2,000	2.5	2"	3/4"	Any Position	-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 Position	-15° to 400°	0000000	00000
3/8	06	3/8	06	10	3.3	2,000	2.5	2 1/2"	1"	Any Position	-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 Position	-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 Position	-30° to 200°	0000000	00000
3/4	12	3/4	12	12	1.9	2,000	2.5	3"	1 5/8"	Any Position	-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 Position	-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 Position	-15° to 400°	0000000	00000
1/4	04	1/4	04	3	0.54	5,000	2.5	2"	7/8"	Any Position	-15° to 400°	0000000	00000
1/4	04	1/4	04	6	1.47	5,000	2.5	2"	3/4"	Any Position	-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 Position	-15° to 400°	0000000	00000
3/8	06	3/8	06	10	3.3	5,000	2.5	2 1/2"	1"	Any Position	-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 Position	-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 Position	-30° to 200°	0000000	00000
3/4	12	3/4	12	12	1.9	5,000	2.5	3"	1 5/8"	Any Position	-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 Position	-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 Position	-15° to 400°	0000000	00000
1/4	04	1/4	04	3	0.54	5,000	2.5	2"	7/8"	Any Position	-15° to 400°	0000000	00000
1/4	04	1/4	04	6	1.47	5,000	2.5	2"	3/4"	Any Position	-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 Position	-15° to 400°	0000000	00000
3/8	06	3/8	06	10	3.3	5,000	2.5	2 1/2"	1"	Any Position	-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 Position	-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 Position	-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 Position	-30° to 200°	0000000	000000

NPTF Male Inlet × NPTF Male Outlet—Ball Check Valve

NPTF — NPTF (Male)

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 Orientation	Temp. Range, °F		Each
Brass Body
1/8	02	1/8	02	1	0.17	2,000	2.5	__	1"	7/16"	Any Position	-30° to 190°	00000000	000000
1/8	02	1/8	02	1	0.17	2,000	2.5	Buna-N Rubber	1"	7/16"	Any Position	-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 Position	-30° to 190°	00000000	00000
1/4	04	1/4	04	2.5	0.56	2,000	2.5	Buna-N Rubber	1 3/8"	5/8"	Any Position	-30° to 190°	00000000	00000
3/8	06	3/8	06	6	1.31	2,000	2.5	__	1 5/8"	3/4"	Any Position	-30° to 190°	00000000	00000
3/8	06	3/8	06	6	1.31	2,000	2.5	Buna-N Rubber	1 5/8"	3/4"	Any Position	-30° to 190°	00000000	00000
1/2	08	1/2	08	10	2.71	2,000	2.5	__	2 1/8"	7/8"	Any Position	-30° to 190°	00000000	00000
1/2	08	1/2	08	10	2.71	2,000	2.5	Buna-N Rubber	2 1/8"	7/8"	Any Position	-30° to 190°	00000000	00000
3/4	12	3/4	12	15	3.4	2,000	2.5	Buna-N Rubber	2 1/4"	1 1/8"	Any Position	-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 Position	-30° to 190°	00000000	00000
1/4	04	1/4	04	2.5	0.56	3,000	2.5	Buna-N Rubber	1 3/8"	5/8"	Any Position	-30° to 190°	00000000	00000
3/8	06	3/8	06	6	1.31	3,000	2.5	__	1 5/8"	3/4"	Any Position	-30° to 190°	00000000	00000
3/8	06	3/8	06	6	1.31	3,000	2.5	Buna-N Rubber	1 5/8"	3/4"	Any Position	-30° to 190°	00000000	00000
1/2	08	1/2	08	10	2.71	3,000	2.5	__	2 1/8"	7/8"	Any Position	-30° to 190°	00000000	00000
1/2	08	1/2	08	10	2.71	3,000	2.5	Buna-N Rubber	2 1/8"	7/8"	Any Position	-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 Position	-30° to 190°	00000000	00000
1/4	04	1/4	04	2.5	0.56	3,000	2.5	Buna-N Rubber	1 3/8"	5/8"	Any Position	-30° to 190°	00000000	00000
3/8	06	3/8	06	6	1.31	3,000	2.5	Buna-N Rubber	1 5/8"	3/4"	Any Position	-30° to 190°	00000000	00000

BSPT Female Inlet × BSPT Female Outlet—Ball Check Valve

BSPT — BSPT and BSPP — BSPP

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 Orientation	Temp. Range, °F		Each
Steel Body
1/4	04	1/4	04	6	1.47	5,000	2.5	2"	3/4"	Any Position	-30° to 200°	000000	000000
3/8	06	3/8	06	10	3.3	5,000	2.5	2 1/2"	1"	Any Position	-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 Position	-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 Position	-30° to 200°	000000	00000

BSPP Female Inlet × BSPP Female Outlet—Ball Check Valve

BSPT — BSPT and BSPP — BSPP

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 Orientation	Temp. Range, °F		Each
Steel Body
1/4	04	1/4	04	6	1.47	5,000	2.5	2"	3/4"	Any Position	-30° to 200°	000000	000000
3/8	06	3/8	06	10	3.3	5,000	2.5	2 1/2"	1"	Any Position	-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 Position	-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 Position	-30° to 200°	000000	00000

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

UN/UNF (SAE Straight) — UN/UNF (JIC)

Inlet Connection		Outlet Connection
Thread Size	Dash Size	Thread Size	Dash Size	Flared Angle	Max. Flow Rate	Flow Coefficient (Cv)	Max. Pressure, psi	Min. Opening Pressure, psi	Seal Material	Port-to-Port Lg.	Hex Wd.	Mounting Orientation	Temp. Range, °F		Each
Steel Body
7/16"-20	04	7/16"-20	04	37°	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 1/4"	9/16"	Any Position	-40° to 250°	0000000	000000
9/16"-18	06	9/16"-18	06	37°	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 1/4"	3/4"	Any Position	-40° to 250°	0000000	00000
3/4"-16	08	3/4"-16	08	37°	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 5/8"	7/8"	Any Position	-40° to 250°	0000000	00000
7/8"-14	10	7/8"-14	10	37°	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 7/8"	1"	Any Position	-40° to 250°	0000000	000000
1 1/16"-12	12	1 1/16"-12	12	37°	Not Rated	Not Rated	5,000	5	Buna-N Rubber	2 1/8"	1 1/4"	Any Position	-40° to 250°	0000000	000000
1 5/16"-12	16	1 5/16"-12	16	37°	Not Rated	Not Rated	5,000	5	Buna-N Rubber	2 1/2"	1 1/2"	Any Position	-40° to 250°	0000000	000000
1 5/8"-12	20	1 5/8"-12	20	37°	Not Rated	Not Rated	5,000	5	Buna-N Rubber	2 5/8"	1 7/8"	Any Position	-40° to 250°	0000000	000000

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

UN/UNF
(SAE Straight) —
UN/UNF (ORFS)

Inlet Connection		Outlet Connection
Thread Size	Dash Size	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 Orientation	Temp. Range, °F		Each
Steel Body
7/16"-20	04	9/16"-18	04	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 1/8"	5/8"	Any Position	-40° to 250°	0000000	000000
9/16"-18	06	11/16"-16	06	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 1/8"	3/4"	Any Position	-40° to 250°	0000000	00000
3/4"-16	08	13/16"-16	08	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 3/8"	7/8"	Any Position	-40° to 250°	0000000	000000
7/8"-14	10	1"-14	10	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 5/8"	1 1/8"	Any Position	-40° to 250°	0000000	000000
1 1/16"-12	12	1 3/16"-12	12	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 7/8"	1 1/4"	Any Position	-40° to 250°	0000000	000000
1 5/16"-12	16	1 7/16"-12	16	Not Rated	Not Rated	5,000	5	Buna-N Rubber	2"	1 1/2"	Any Position	-40° to 250°	0000000	000000

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

UN/UNF (JIC) — UN/UNF (SAE Straight)

Inlet Connection			Outlet Connection
Thread Size	Dash Size	Flared Angle	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 Orientation	Temp. Range, °F		Each
Steel Body
7/16"-20	04	37°	7/16"-20	04	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 1/4"	9/16"	Any Position	-40° to 250°	0000000	000000
9/16"-18	06	37°	9/16"-18	06	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 1/4"	3/4"	Any Position	-40° to 250°	0000000	00000
3/4"-16	08	37°	3/4"-16	08	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 5/8"	7/8"	Any Position	-40° to 250°	0000000	00000
7/8"-14	10	37°	7/8"-14	10	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 7/8"	1"	Any Position	-40° to 250°	0000000	000000
1 1/16"-12	12	37°	1 1/16"-12	12	Not Rated	Not Rated	5,000	5	Buna-N Rubber	2 1/8"	1 1/4"	Any Position	-40° to 250°	0000000	000000
1 5/16"-12	16	37°	1 5/16"-12	16	Not Rated	Not Rated	5,000	5	Buna-N Rubber	2 1/2"	1 1/2"	Any Position	-40° to 250°	0000000	000000
1 5/8"-12	20	37°	1 5/8"-12	20	Not Rated	Not Rated	5,000	5	Buna-N Rubber	2 5/8"	1 7/8"	Any Position	-40° to 250°	0000000	000000

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

UN/UNF (JIC) — UN/UNF (JIC)

Inlet Connection			Outlet Connection
Thread Size	Dash Size	Flared Angle	Thread Size	Dash Size	Flared Angle	Max. Flow Rate	Flow Coefficient (Cv)	Max. Pressure, psi	Min. Opening Pressure, psi	Seal Material	Port-to-Port Lg.	Hex Wd.	Mounting Orientation	Temp. Range, °F		Each
Steel Body
7/16"-20	04	37°	7/16"-20	04	37°	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 1/2"	9/16"	Any Position	-40° to 250°	0000000	000000
9/16"-18	06	37°	9/16"-18	06	37°	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 1/2"	3/4"	Any Position	-40° to 250°	0000000	00000
3/4"-16	08	37°	3/4"-16	08	37°	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 7/8"	7/8"	Any Position	-40° to 250°	0000000	00000
7/8"-14	10	37°	7/8"-14	10	37°	Not Rated	Not Rated	5,000	5	Buna-N Rubber	2"	1"	Any Position	-40° to 250°	0000000	000000
1 1/16"-12	12	37°	1 1/16"-12	12	37°	Not Rated	Not Rated	5,000	5	Buna-N Rubber	2 1/2"	1 1/4"	Any Position	-40° to 250°	0000000	000000
1 5/16"-12	16	37°	1 5/16"-12	16	37°	Not Rated	Not Rated	5,000	5	Buna-N Rubber	2 5/8"	1 1/2"	Any Position	-40° to 250°	0000000	000000
1 5/8"-12	20	37°	1 5/8"-12	20	37°	Not Rated	Not Rated	5,000	5	Buna-N Rubber	2 3/4"	1 7/8"	Any Position	-40° to 250°	0000000	000000

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

UN/UNF (ORFS) — UN/UNF (SAE Straight)

Inlet Connection		Outlet Connection
Thread Size	Dash Size	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 Orientation	Temp. Range, °F		Each
Steel Body
9/16"-18	04	7/16"-20	04	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 1/8"	5/8"	Any Position	-40° to 250°	0000000	000000
11/16"-16	06	9/16"-18	06	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 1/8"	3/4"	Any Position	-40° to 250°	0000000	00000
13/16"-16	08	3/4"-16	08	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 3/8"	7/8"	Any Position	-40° to 250°	0000000	000000
1"-14	10	7/8"-14	10	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 5/8"	1 1/8"	Any Position	-40° to 250°	0000000	000000
1 3/16"-12	12	1 1/16"-12	12	Not Rated	Not Rated	5,000	5	Buna-N Rubber	1 7/8"	1 1/4"	Any Position	-40° to 250°	0000000	000000
1 7/16"-12	16	1 5/16"-12	16	Not Rated	Not Rated	5,000	5	Buna-N Rubber	2"	1 1/2"	Any Position	-40° to 250°	0000000	000000

Backflow-Prevention Screw-In Hydraulic Valves

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

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

			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	O'all Ht.	Mounting Orientation		Each
Ball Check Valve
Black Anodized Aluminum Body
DCV-080-B-N-2	__	__	3/4"-16	08	5	Not Rated	3,000	2	1 1/4"	Any Position	0000000	000000
DCV-080-B-N-5	__	__	3/4"-16	08	5	Not Rated	3,000	5	1 1/4"	Any Position	0000000	00000
DCV-080-B-N-10	CV08-20-0-N-10	__	3/4"-16	08	5	Not Rated	3,000	10	1 1/4"	Any Position	0000000	00000
DCV-080-B-N-25	CV08-20-0-N-25	__	3/4"-16	08	5	Not Rated	3,000	25	1 1/4"	Any Position	0000000	00000
DCV-100-B-N-5	CV10-20-0-N-05	__	7/8"-14	10	20	Not Rated	3,000	5	1 5/8"	Any Position	0000000	00000
DCV-100-B-N-10	__	__	7/8"-14	10	20	Not Rated	3,000	10	1 5/8"	Any Position	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	1 5/8"	Any Position	0000000	00000
DCV-100-B-N-30	CV10-20-0-N-30	__	7/8"-14	10	20	Not Rated	3,000	30	1 5/8"	Any Position	0000000	00000
DCV-100-B-N-60	__	D04B2-2.1-N	7/8"-14	10	20	Not Rated	3,000	60	1 5/8"	Any Position	0000000	00000
DCV-100-B-N-100	CV10-20-0-N-100	D04B2-6.9-N	7/8"-14	10	20	Not Rated	3,000	100	1 5/8"	Any Position	0000000	00000