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Brass Inline Easy Read Flow Control Valve, Female 1/2-14 NPT Ports, Up to 12.00 GPM & 2000.00 PSI

Description & Features

The Brass Inline Easy Read Flow Control Valve offers precise control in fluid systems with its easy-to-read numerical settings. Designed for applications requiring controlled flow in one direction and free flow in the opposite direction this valve is versatile and reliable for various pneumatic and lower pressure hydraulic systems.

Constructed from durable brass the valve supports a maximum operating pressure of 2000 PSI and a rated flow of up to 12 GPM. The 1/2-14 NPT ports ensure secure connections while the metal knob and stem enhance durability. This valve allows for accurate adjustments within a small fraction of a turn making it a practical choice for professionals seeking exact settings.

Key materials include Viton O-rings Teflon washer seals and stainless steel retainers balls and springs ensuring longevity and robust performance across a temperature range from -15F to 200F. The color coding and numerical readout system guarantee repeatable and positive settings contributing to efficient and hassle-free adjustments.

Supplier Part Number: EF30B

Specifications

A 1.97	Adjustment No	B 1.63	C 3.44	Check Valve No	CV Factor 0.93	Brand Deltrol Fluid Products	Brand Deltrol Fluid Products	Pack Size 1.00	UOM EA	Materials Brass	Maximum Operating Pressure 2000	Rated Flow 12	Rated Flow 12	Size 1/2	Supplier Part Number EF30B	Thread 1 1/2-14 NPT	Alternate Part Numbers Alternate Part Number C1CP15, Alternate Part Number MI-00278639, Alternate Part Number MINO-00223F25042	Product Weight 1.22 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: Melvin T on Apr 28, 2025, 10:30 AM

Reckon this'd work alright for controllin' the water flow in my lil' hydroponics setup? Gotta keep things just right, ya know?

Answer by: Customer Support on Apr 29, 2025, 9:39 PM

This brass flow control valve can certainly be used for that type of application, as it's made for pneumatic and lower pressure hydraulic systems where you need to adjust the flow. The color coding and numerical readout help with repeatable settings too.

Question by: Pete J on Feb 24, 2026, 1:23 PM

got a 1/2 npt line here. are the ports on this valve female 1/2-14 npt and does it go inline?

Answer by: Customer Support on Feb 26, 2026, 8:10 AM

It’s set up for inline hydraulic connections with female 1/2-14 NPT ports on the body.

Question by: Rod G on Aug 6, 2025, 5:04 PM

Flow adjustment on this thing -- can you actually make changes while the system's running, or do you have to shut everything down first?

Answer by: Customer Support on Aug 8, 2025, 6:29 AM

You can make adjustments while the system is under pressure, no need to shut down to dial in your flow rate. The numerical readout and color-coded knob let you move through settings within a small fraction of a turn, so changes are quick and repeatable. Once you've got it where you want it, there's a set screw to lock the position in place.