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Steel Inline Easy Read Flow Control Valve, Female 1/4-18 NPT Ports, Up to 6.00 GPM & 5000.00 PSI

Description & Features

Steel Inline Easy Read Flow Control Valve is designed for precise flow adjustments in one direction while allowing free flow in the opposite direction. Purpose-built for hydraulic systems this valve supports a maximum operating pressure of 5000 PSI and a rated flow of up to 6.00 GPM. Precision settings are easily achieved with color coding and a numerical readout allowing adjustments within a small fraction of a turn. The body is constructed from durable steel with a stainless steel needle Viton O-Rings and Teflon washer seals for reliable long-term performance.

This valve is equipped with female 1/4-18 NPT ports making it a robust choice for demanding industrial applications. The metal knob and stem further enhance durability while the set screw allows settings to be locked confidently.

Color coding ensures positive and repeatable settings essential for maintaining consistent system performance.

MPN: EF20S Supplier Part Number: EF20S

Specifications

Brand Deltrol Fluid Products	a Dimensions 1.41 in	Actuator Type Knob	Adjustment Without Adjustment	b Dimensions 3/4 in	Body Material Carbon Steel	c Dimensions 2.41 in	Check Valve Without Check Valve	Connection Type FNPT	Disc Material 416 Stainless Steel	Finish Anodized	Handle Material Aluminum	Lead-Free/Contains Lead Contains Lead	Mounting Type In-Line	Nominal Size 1/4 in	Number of Handles 1	Operator Type Knob	Packing Material PTFE	Seal Material FKM	Seat Material PTFE	Series eF Flow Control Series	Softgoods Material FKM/PTFE	Thread 1/4-18 NPT

Similar Products

Model Number	Size	Thread 1	Materials	Maximum Operating Pressure	Rated Flow	CV Factor	a Dimensions	b Dimensions	c Dimensions
EF25B Hydraulic/Pneumatic Flow Control	3/8	3/8-18 NPT	Brass	2000	10	0.7600	1.63 in	1 in	2.88 in
EF25S Hydraulic/Pneumatic Flow Control	3/8	3/8-18 NPT	Steel	5000	10	0.7600	1.63 in	1 in	2.88 in
EF30S Hydraulic/Pneumatic Flow Control	1/2	1/2-14 NPT	Steel	5000	12	0.9300	1.97 in	1.63 in	3.44 in
EF10B Hydraulic/Pneumatic Flow Control	1/8	1/8-27 NPT	Brass	2000	3	0.2800	1.28 in	0.63 in	1.94 in
EF10S Hydraulic/Pneumatic Flow Control	1/8	1/8-27 NPT	Steel	5000	3	0.2800	1.28 in	0.63 in	1.94 in
EF20B Hydraulic/Pneumatic Flow Control	1/4	1/4-18 NPT	Brass	2000	6	0.5300	1.41 in	3/4 in	2.41 in
EF30B Hydraulic/Pneumatic Flow Control	1/2	1/2-14 NPT	Brass	2000	12	0.9300	1.97 in	1.63 in	3.44 in
EF35B Hydraulic/Pneumatic Flow Control	3/4	3/4-14 NPT	Brass	2000	20	1.4300	2.19 in	1.38 in	3-3/4 in
EF35S Hydraulic/Pneumatic Flow Control	3/4	3/4-14 NPT	Steel	5000	20	1.4300	2.19 in	1.38 in	3-3/4 in

Product Questions & Answers (3)

Question by: Duane P on Mar 25, 2026, 9:48 AM

got a cylinder on a log splitter that keeps drifting faster than i want when it extends, would a valve like this help me dial that back while still letting it retract free?

Answer by: Customer Support on Mar 26, 2026, 9:23 PM

For that kind of setup, yes. Flow control valves in this family let you restrict flow going one direction while the opposite direction passes through unrestricted. So you could slow the extend stroke down to whatever feels right and the retract would stay free-flowing. Rated up to 6 GPM and 5000 PSI, it fits comfortably in most small cylinder circuits running standard hydraulic pressure. The 1/4-18 NPT female ports are a common thread size on log splitter hydraulic connections, so fitting it in shouldn't require any unusual adapters.

Question by: Shawn C on May 15, 2025, 11:45 AM

need to slow a cylinder down one way but let it come back quick. is that what this valve does?

Answer by: Customer Support on May 17, 2025, 6:38 AM

For a cylinder that needs controlled speed in one direction and a free return the other way, that is exactly the job of this inline flow control. It meters flow in one direction for a steady, adjustable rate, and it allows free flow in the opposite direction.

Question by: Jimmy Y on Jan 17, 2026, 3:36 PM

Hey, could you lock this valve at a certain setting so it doesn't get bumped outta place?

Answer by: Customer Support on Jan 18, 2026, 8:04 PM

the valve has a set screw that lets you lock it down once you've got the flow where you need it. That keeps your settings consistent, which is key for keeping your system running smooth.

Steel Inline Easy Read Flow Control Valve, Female 1/4-18 NPT Ports, Up to 6.00 GPM & 5000.00 PSI

Description & Features

Specifications

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Product Questions & Answers (3)