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Brass Inline Easy Read Flow Control Valve, Female 1/4-18 NPT Ports, Up to 6.00 GPM & 2000.00 PSI

Description & Features

This brass inline flow control valve is designed for managing flow with precision in one direction and allowing free flow in the opposite direction. Operational adjustments are made easy under pressure and can be locked in place with a set screw providing reliability for various industrial applications.

Color coding paired with numerical readouts ensures positive accurate and repeatable settings. A metal knob and stem contribute to durability and longevity. The valve body is available in brass making it ideal for pneumatic systems and lower pressure hydraulic systems.

The temperature range spans from -15F to 200F accommodating a wide array of operating conditions. The valve's components include a brass needle Viton O-Ring Teflon washer seal and stainless steel retainer ball and spring. Its maximum operating pressure is rated at 2000 PSI with a rated flow capacity of up to 6 GPM.

MPN: EF20B

Supplier Part Number: EF20B

Specifications

A 1.41	Adjustment No	B 0.75	C 2.41	Check Valve No	CV Factor 0.53	Brand Deltrol Fluid Products	Brand Deltrol Fluid Products	Pack Size 1.00	UOM EA	Materials Brass	Maximum Operating Pressure 2000	Rated Flow 6	Rated Flow 6	Size 1/4	Supplier Part Number EF20B	Thread 1 1/4-18 NPT	Alternate Part Numbers Alternate Part Number 10005363, Alternate Part Number 10120-43, Alternate Part Number C1CP11, Alternate Part Number MI-00278631, Alternate Part Number MINO-00223F25038	Product Weight 0.42 lbs

Similar Products

Model Number	Size	Thread 1	Materials	Maximum Operating Pressure	Rated Flow	CV Factor	A	B	C
EF25B Hydraulic/Pneumatic Flow Control	3/8	3/8-18 NPT	Brass	2000	10	0.7600	1.63	1	2.88
EF25S Hydraulic/Pneumatic Flow Control	3/8	3/8-18 NPT	Steel	5000	10	0.7600	1.63	1	2.88
EF30S Hydraulic/Pneumatic Flow Control	1/2	1/2-14 NPT	Steel	5000	12	0.9300	1.97	1.63	3.44
EF10B Hydraulic/Pneumatic Flow Control	1/8	1/8-27 NPT	Brass	2000	3	0.2800	1.28	0.63	1.94
EF10S Hydraulic/Pneumatic Flow Control	1/8	1/8-27 NPT	Steel	5000	3	0.2800	1.28	0.63	1.94
EF20B Hydraulic/Pneumatic Flow Control	1/4	1/4-18 NPT	Brass	2000	6	0.5300	1.41	0.75	2.41
EF20S Hydraulic/Pneumatic Flow Control	1/4	1/4-18 NPT	Steel	5000	6	0.5300	1.41	0.75	2.41
EF30B Hydraulic/Pneumatic Flow Control	1/2	1/2-14 NPT	Brass	2000	12	0.9300	1.97	1.63	3.44
EF35B Hydraulic/Pneumatic Flow Control	3/4	3/4-14 NPT	Brass	2000	20	1.4300	2.19	1.38	3.75
EF35S Hydraulic/Pneumatic Flow Control	3/4	3/4-14 NPT	Steel	5000	20	1.4300	2.19	1.38	3.75

Product Questions & Answers (3)

Question by: Sherry C on Aug 21, 2025, 5:14 PM

Need something that’ll meter flow one way but let it return free the other way. is that what this valve does?

Answer by: Customer Support on Aug 23, 2025, 1:23 PM

Built for one direction metering and the opposite direction free flow, it lets you control speed or flow in one direction while allowing unrestricted return flow the other way.

Question by: Glen B on Jun 5, 2025, 7:04 PM

Reckon this'd work alright with a low-pressure hydraulic setup on my old log splitter?

Answer by: Customer Support on Jun 7, 2025, 11:27 AM

This brass body valve is best suited for pneumatic systems and lower pressure hydraulic systems, where it can reliably handle the flow. Just keep in mind the 2000 PSI maximum operating pressure.

Question by: Judy O on Oct 19, 2025, 7:26 AM

what's the temperature range on this valve? got a spot where it gets pretty cold in winter and warm as blazes come July

Answer by: Customer Support on Oct 21, 2025, 6:18 AM

Rated from -15F up to 200F, so both ends of that range should cover you just fine for seasonal outdoor or shop conditions.