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Steel Inline Easy Read Flow Control Valve, Female 1/8-27 NPT Ports, Up to 3.00 GPM & 5000.00 PSI

Description & Features

This steel inline easy read flow control valve from DELTROL Fluid Products allows controlled flow in one direction and free flow in the opposite direction. Flow adjustment can be performed under pressure and locked with a setscrew.

The valve body is constructed of steel, with a stainless steel needle, Viton O-rings, and Teflon washer seal. Color coding and a numerical readout allow positive, precise, and repeatable settings. This 1/8-27 NPT female port valve is rated up to 3.00 GPM and 5000 PSI and operates within a temperature range of -15°F to 200°F.

SKU: EF10S

Supplier Part Number (MPN): 10120-41

Alternate Part Numbers: C1GG80, MI-00279190, MINO-00223F25503

Specifications

Brand Deltrol Fluid Products	a Dimensions 1.28 in	Actuator Type Knob	Adjustment Without Adjustment	b Dimensions 0.63 in	Body Material Carbon Steel	c Dimensions 1.94 in	Check Valve Without Check Valve	Color Silver	Connection Type FNPT	Dimensions 23/32 in Dia x 1-15/16 in L x 5/8 in H	Disc Material 440 Stainless Steel	Finish Anodized	Handle Material Aluminum	Lead-Free/Contains Lead Contains Lead	Mounting Type In-Line	Number of Handles 1	Number of Ports/Ways 2	Operator Type Knob	Packing Material PTFE	Seal Material FKM	Seat Material 440 Stainless Steel	Series eF Flow Control Series	Softgoods Material FKM	Stem Material 416 Stainless Steel	Thread 1/8-27 NPT	Thread Type BSPP, BSPT, NPTF, SAE

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
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
EF20S Hydraulic/Pneumatic Flow Control	1/4	1/4-18 NPT	Steel	5000	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 (2)

Question by: Denise Y on Nov 29, 2025, 2:58 PM

got a tight spot on my hydraulic line. is this the kind where you can tweak the flow while the system’s still pressurized, then lock it in?

Answer by: Customer Support on Nov 30, 2025, 7:12 PM

Adjustment can be made under pressure on this valve, and once you have the flow where you want it you can lock the setting with the set screw. The easy read color bands and numeric readout are there to help you come back to the same setting later.

Question by: Carl F on Dec 10, 2025, 9:53 PM

What kind of fluid can I run through this valve? I'm working with a hydraulic setup.

Answer by: Customer Support on Dec 12, 2025, 1:20 PM

Since the body is made of steel, it's best suited for hydraulic systems. Brass valves are better for pneumatic or lower-pressure hydraulic setups.

Steel Inline Easy Read Flow Control Valve, Female 1/8-27 NPT Ports, Up to 3.00 GPM & 5000.00 PSI

Description & Features

Specifications

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Product Questions & Answers (2)