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Steel Inline Easy Read Needle Valve, Female 3/8-18 NPT Ports, Up to 18.00 GPM & 5000.00 PSI

Description & Features

The DELTROL Fluid Products hydraulic/pneumatic needle valve features a robust steel construction designed for use in hydraulic systems. Engineered with female 3/8-18 NPT ports, this needle valve supports a rated flow of up to 18.00 GPM and a maximum operating pressure of 5000 PSI.

This valve is capable of controlled flow adjustments in both directions, even under pressure, with settings that can be securely locked using a set screw. The valve is equipped with a metal knob and stem, ensuring durability and long-lasting performance in demanding environments.

Color coding and a numerical readout facilitate precise and repeatable settings, making it possible to adjust the valve accurately within a small fraction of a turn, with one full turn per color.

The valve's body is constructed from carbon steel, and the needle is made from stainless steel, with Vitonreg; O-rings and Teflonreg; washer seals. The needle valve operates efficiently within a temperature range of -15deg;F to 400deg;F.

Supplier Part Number: EN25S

CV Factor: 0.9200

Specifications

Brand Deltrol Fluid Products	a Dimensions 1.63 in	Actuator Type Knob	b Dimensions 1 in	Body Material Steel	Color Ring Anodized Aluminum	Configuration In-Line	Connection Type FNPT	d Dimensions 3-1/4 in	Dimensions 1-3/8 in L x 1-5/8 in W	Disc Material 416 Stainless Steel	Finish Anodized	grp Materials Body: Available in Brass, Carbon Steel or Stainless Steel (1 in Size Available in Naval Bronze Or Ductile Iron), Needle: Brass on Brass Valves, Stainless Steel on Steel and Stainless Steel Valves. O-ring: FKM is Standard (Other Materials Available), Washe	Handle Material Aluminum	Nominal Size 3/8 in	Packing Material PTFE	Seal Material FKM	Seat Material FKM/PTFE	Series EN Series	Set Screw Steel	Softgoods Material FKM/PTFE	Stem Material 416 Stainless Steel	Thread 1 3/8-18 NPT

Similar Products

Model Number	Size	Thread 1	Materials	Maximum Operating Pressure	Rated Flow	CV Factor	a Dimensions	b Dimensions	d Dimensions
EN20B Hydraulic/Pneumatic Needle Valve	1/4	1/4-18 NPT	Brass	2000	10	0.5100	1.41 in	3/4 in	2.56 in
EN20S Hydraulic/Pneumatic Needle Valve	1/4	1/4-18 NPT	Steel	5000	10	0.5100	1.41 in	3/4 in	2.56 in
EN25B Hydraulic/Pneumatic Needle Valve	3/8	3/8-18 NPT	Brass	2000	18	0.9200	1.63 in	1 in	3-1/4 in
EN10B Hydraulic/Pneumatic Needle Valve	1/8	1/8-27 NPT	Brass	2000	4.5	0.2500	1.28 in	0.63 in	1.44 in
EN10S Hydraulic/Pneumatic Needle Valve	1/8	1/8-27 NPT	Steel	5000	4.5	0.2500	1.28 in	0.63 in	1.44 in
EN30B Hydraulic/Pneumatic Needle Valve	1/2	1/2-14 NPT	Brass	2000	28	1.2000	1.97 in	1.13 in	3.56 in
EN30S Hydraulic/Pneumatic Needle Valve	1/2	1/2-14 NPT	Steel	5000	28	1.2000	1.97 in	1.13 in	3.56 in
EN35B Hydraulic/Pneumatic Needle Valve	3/4	3/4-14 NPT	Brass	2000	40	1.8400	2.19 in	1.38 in	4.13 in
EN35S Hydraulic/Pneumatic Needle Valve	3/4	3/4-14 NPT	Steel	5000	40	1.8400	2.19 in	1.38 in	4.13 in

Product Questions & Answers (3)

Question by: Neal W on Feb 5, 2026, 9:37 PM

got a hydraulic setup where i need to fine-tune flow both ways. is this needle valve made for that kind of deal

Answer by: Customer Support on Feb 7, 2026, 6:51 AM

For controlled flow in either direction, this inline needle valve is a good fit. It lets you adjust the flow while the system is under pressure, and you can lock the setting in place with the set screw so it does not drift.

Question by: Randy P on Aug 20, 2025, 10:17 AM

Reckon this'll hold up okay in a hydraulic system running around 4500 PSI? Don't wanna get somethin' that's gonna blow on me.

Answer by: Customer Support on Aug 21, 2025, 5:56 PM

This steel needle valve is rated for pressures up to 5000 PSI, so it should handle your system with a good safety margin.

Question by: Brent C on May 8, 2025, 2:42 PM

does this valve work for adjusting flow in both directions, or is it just one-way? got a circuit that needs control going back and forth under pressure

Answer by: Customer Support on May 10, 2025, 6:26 AM

Flow adjustment in both directions is supported, and changes can be made while the system is under pressure. That makes it practical for circuits where you need to dial things in on the fly without shutting down. The set screw lock also lets you hold a setting once you've got it where you want it, so it won't drift on you.

Steel Inline Easy Read Needle Valve, Female 3/8-18 NPT Ports, Up to 18.00 GPM & 5000.00 PSI

Description & Features

Specifications

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Product Questions & Answers (3)