Hydraulic Needle Valves | McMaster-Carr

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For Use With

Hydraulic Fluid

System of Measurement

Pipe Size

Flow Control Type

One Direction with Unrestricted Reverse

Two Direction

Thread Type

NPTF

UN/UNF (SAE Straight)

Maximum Pressure

1,000 psi to 3,999 psi

Body Material

Maximum Flow Rate

Handle Type

Dash Size

Actuation

Material

Flow Coefficient (Cv)

Valve Type

Valve Function

Flow Rate

Overall Length

Thread Size

Seal Material

Gender

Height

Export Control Classification Number (ECCN)

EAR99

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

RoHS

Not Compliant

REACH

Not Compliant

DFARS Specialty Metals

Exempt

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44 Products

Flow-Adjustment Inline Hydraulic Valves

Turn the dial to gradually adjust the amount of flow. Five colored rings on the valve stem represent different flow rates. Adjust the dial until you see the color of the flow rate you need.

One Direction with Unrestricted Reverse—NPTF Female

Image of Product. Front orientation. Flow-Regulating Valves. Flow-Adjustment Inline Hydraulic Valves .

One-direction-with-unrestricted-reverse valves regulate flow in one direction while allowing oil to flow freely in the opposite direction.

NPTF (Dryseal) threads are compatible with NPT threads.

Brass Body—Brass valves have better corrosion resistance than steel valves.

	Inlet/Outlet Connection						Overall
	Pipe Size	Dash Size	Max. Flow Rate, gpm	Flow Coefficient (Cv)	Max. Pressure, psi	Seal Material	Lg.	Wd.	Ht.	Port-to-Port Lg.	Valve Type		Each
Steel Body



		1/8	02	3	0.23	5,000	Buna-N	2"	3/4"	1 3/4"	2"	Needle	1042K12	000000


		1/4	04	5	0.43	5,000	Buna-N	2 5/8"	7/8"	2"	2 5/8"	Needle	1042K14	00000
		3/8	06	8	0.79	5,000	Buna-N	2 3/4"	1"	2 1/2"	2 3/4"	Needle	1042K16	00000
		1/2	08	15	0.98	5,000	Buna-N	3 1/2"	1 1/4"	3"	3 1/2"	Needle	1042K18	000000
		3/4	12	25	2.47	3,000	Buna-N	3 7/8"	1 1/2"	3 5/8"	3 7/8"	Needle	1042K21	000000
		1	16	40	5.25	3,000	Buna-N	5"	1 7/8"	5 1/8"	5"	Needle	1042K23	000000


		Brass Body



				1/8	02	3	0.23	2,000	Buna-N	2"	3/4"	1 3/4"	2"	Needle	1042K11	00000


				1/4	04	5	0.43	2,000	Buna-N	2 5/8"	7/8"	2"	2 5/8"	Needle	1042K13	00000
				3/8	06	8	0.79	2,000	Buna-N	2 3/4"	1"	2 1/2"	2 3/4"	Needle	1042K15	00000
				1/2	08	15	0.98	2,000	Buna-N	3 1/2"	1 1/4"	3"	3 1/2"	Needle	1042K17	000000
				3/4	12	25	2.47	2,000	Buna-N	3 7/8"	1 1/2"	3 5/8"	3 7/8"	Needle	1042K19	000000

One Direction with Unrestricted Reverse—UN/UNF (SAE Straight) Female

One-direction-with-unrestricted-reverse valves regulate flow in one direction while allowing oil to flow freely in the opposite direction.

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

	Inlet/Outlet Connection						Overall
	Thread Size	Dash Size	Max. Flow Rate, gpm	Flow Coefficient (Cv)	Max. Pressure, psi	Seal Material	Lg.	Wd.	Ht.	Port-to-Port Lg.	Valve Type		Each
Steel Body



		7/16"-20	04	3	0.23	5,000	Buna-N	2 3/4"	7/8"	1 7/8"	2 3/4"	Needle	1042K38	0000000


		9/16"-18	06	5	0.43	5,000	Buna-N	3 1/8"	1"	2 1/4"	3 1/8"	Needle	1042K39	000000
		3/4"-16	08	8	0.79	5,000	Buna-N	3 1/2"	1 1/8"	2 5/8"	3 1/2"	Needle	1042K41	000000
		7/8"-14	10	15	0.98	5,000	Buna-N	4"	1 1/4"	3"	4"	Needle	1042K43	000000
		1 1/16"-12	12	25	2.47	3,000	Buna-N	4 5/8"	1 1/2"	3 5/8"	4 5/8"	Needle	1042K44	000000

Two Direction—NPTF Female

Two-direction valves regulate flow in either direction.

NPTF (Dryseal) threads are compatible with NPT threads.

Brass Body—Brass valves have better corrosion resistance than steel valves.

	Inlet/Outlet Connection						Overall
	Pipe Size	Dash Size	Max. Flow Rate, gpm	Flow Coefficient (Cv)	Max. Pressure, psi	Seal Material	Lg.	Wd.	Ht.	Port-to-Port Lg.	Valve Type		Each
Steel Body



		1/8	02	3	0.23	5,000	Buna-N	1 1/2"	3/4"	1 3/4"	1 1/2"	Needle	1535N12	000000


		1/4	04	5	0.44	5,000	Buna-N	2"	7/8"	2"	2"	Needle	1535N14	00000
		3/8	06	8	0.79	5,000	Buna-N	2 1/2"	1"	2 1/2"	2 1/2"	Needle	1535N16	00000
		1/2	08	15	0.98	5,000	Buna-N	2 5/8"	1 1/4"	3"	2 5/8"	Needle	1535N18	000000
		3/4	12	25	2.47	5,000	Buna-N	3 1/4"	1 1/2"	3 5/8"	3 1/4"	Needle	1535N21	000000


		Brass Body



				1/8	02	3	0.23	2,000	Buna-N	1 1/2"	3/4"	1 3/4"	1 1/2"	Needle	1535N11	00000


				1/4	04	5	0.44	2,000	Buna-N	2"	7/8"	2"	2"	Needle	1535N13	00000
				3/8	06	8	0.79	2,000	Buna-N	2 1/2"	1"	2 1/2"	2 1/2"	Needle	1535N15	00000
				1/2	08	15	0.98	2,000	Buna-N	2 5/8"	1 1/4"	3"	2 5/8"	Needle	1535N17	000000
				3/4	12	25	2.47	2,000	Buna-N	3 1/4"	1 1/2"	3 5/8"	3 1/4"	Needle	1535N19	000000

Precision Flow-Adjustment Inline Hydraulic Valves

A tapered needle gives you more precise control than standard flow-adjustment inline hydraulic valves. Five colored rings on the valve stem represent different flow rates. Adjust the dial until you see the color of the flow rate you need.

Two Direction—NPTF Female

Image of Product. Front orientation. Flow-Regulating Valves. Precision Flow-Adjustment Inline Hydraulic Valves .

NPTF (Dryseal) threads are compatible with NPT threads.

	Inlet/Outlet Connection						Overall
	Pipe Size	Dash Size	Max. Flow Rate, gpm	Flow Coefficient (Cv)	Max. Pressure, psi	Seal Material	Lg.	Wd.	Ht.	Port-to-Port Lg.	Valve Type		Each
Steel Body



		1/8	02	3	0.24	5,000	Buna-N	1 1/2"	1 3/4"	3"	1 1/2"	Needle	1042K25	0000000


		1/4	04	5	0.49	5,000	Buna-N	2"	2"	3 7/8"	2"	Needle	1042K27	00000
		3/8	06	8	1.29	5,000	Buna-N	2 1/2"	2 1/2"	4 3/8"	2 1/2"	Needle	1042K31	000000
		1/2	08	15	1.93	5,000	Buna-N	2 5/8"	3 1/4"	5 3/4"	2 5/8"	Needle	1042K34	000000
		3/4	12	25	3.21	5,000	Buna-N	3 1/4"	3 7/8"	6 3/8"	3 1/4"	Needle	1042K36	000000

Two Direction—UN/UNF (SAE Straight) Female

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

	Inlet/Outlet Connection						Overall
	Thread Size	Dash Size	Max. Flow Rate, gpm	Flow Coefficient (Cv)	Max. Pressure, psi	Seal Material	Lg.	Wd.	Ht.	Port-to-Port Lg.	Valve Type		Each
Steel Body



		7/16"-20	04	3	0.24	5,000	Buna-N	2"	1 3/4"	3 1/4"	2"	Needle	1042K28	0000000


		9/16"-18	06	5	0.49	5,000	Buna-N	2 3/8"	2"	4"	2 3/8"	Needle	1042K32	000000
		3/4"-16	08	8	1.29	5,000	Buna-N	3"	2 1/2"	4 7/8"	3"	Needle	1042K35	000000
		1 1/16"-12	12	25	3.21	5,000	Buna-N	4"	3 7/8"	6 3/8"	4"	Needle	1042K37	000000

Adjustable Inline Hydraulic Flow-Regulating Valves

Set your flow rate and then adjust it as necessary; these valves maintain flow rate despite pressure changes in the system. Five colored rings on the valve stem represent different flow rates. Adjust the dial until you see the color of the flow rate you need.

NPTF (Dryseal) threads are compatible with NPT threads.

One Direction—NPTF Female

Image of Product. Front orientation. Flow-Regulating Valves. Adjustable Inline Hydraulic Flow-Regulating Valves .

One-direction valves regulate flow in one direction. They are not recommended for systems that may have reverse flow.

	Inlet/Outlet Connection						Overall
	Pipe Size	Dash Size	Max. Flow Rate, gpm	Flow Coefficient (Cv)	Max. Pressure, psi	Seal Material	Lg.	Wd.	Ht.	Port-to-Port Lg.	Valve Type		Each
Steel Body



		1/4	04	3	Not Rated	3,000	Buna-N	3 5/8"	1 3/8"	2 3/4"	3 5/8"	Needle	1609N13	0000000


		3/8	06	6	Not Rated	3,000	Buna-N	4 1/8"	1 1/2"	3 1/8"	4 1/8"	Needle	1609N14	000000
		1/2	08	15	Not Rated	3,000	Buna-N	5"	1 3/4"	4"	5"	Needle	1609N15	000000
		3/4	12	25	Not Rated	3,000	Buna-N	5 7/8"	2 1/4"	5 1/8"	5 7/8"	Needle	1609N11	000000

One Direction with Unrestricted Reverse—NPTF Female

One-direction-with-unrestricted-reverse valves regulate flow in one direction while allowing fluid to flow freely in the opposite direction.

	Inlet/Outlet Connection						Overall
	Pipe Size	Dash Size	Max. Flow Rate, gpm	Flow Coefficient (Cv)	Max. Pressure, psi	Seal Material	Lg.	Wd.	Ht.	Port-to-Port Lg.	Valve Type		Each
Steel Body



		1/4	04	3	Not Rated	3,000	Buna-N	3 5/8"	1 3/8"	2 1/2"	3 5/8"	Needle	1381N13	0000000


		3/8	06	6	Not Rated	3,000	Buna-N	4 1/8"	1 1/2"	2 7/8"	4 1/8"	Needle	1381N14	000000
		1/2	08	15	Not Rated	3,000	Buna-N	5"	1 3/4"	3 3/4"	5"	Needle	1381N15	000000
		3/4	12	25	Not Rated	3,000	Buna-N	5 7/8"	2 1/4"	4 5/8"	5 7/8"	Needle	1381N11	000000
		1	16	50	Not Rated	3,000	Buna-N	7"	2 3/4"	6 1/4"	7"	Needle	1381N12	000000