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Brass Inline Flow Control Valve, Female 3/8-18 NPT Ports, Up to 5.00 GPM & 2000.00 PSI

Description & Features

The DELTROL Fluid Products brass inline flow control valve is specifically designed for controlled flow in one direction while allowing free flow in the opposite direction. It features female 3/8-18 NPT ports and accommodates up to 5.00 GPM with a maximum operating pressure of 2000 PSI.

This valve is crafted from durable brass making it suitable for pneumatic systems as well as lower pressure hydraulic systems. The tamperproof adjustment key ensures secure settings and the locknut standardization helps maintain precise flow control.

The valve operates efficiently within a temperature range of -15F to 200F. Additional features include a knurled knob option and a CV factor of 0.7800. The needle in brass valves is made of brass while the retainer and ball are constructed from stainless steel.

Supplier Part Number: F25B

MPN: C1CP46

Specifications

A 1.06	Adjustment No	B 1.81	C 0.34	Check Valve No	CV Factor 0.78	D 2.75	Brand Deltrol Fluid Products	Brand Deltrol Fluid Products	Pack Size 1.00	UOM EA	Materials Brass	Maximum Operating Pressure 2000	Rated Flow 5	Rated Flow 5	Size 3/8	Supplier Part Number F25B	Thread 1 3/8-18 NPT	Alternate Part Numbers Alternate Part Number C1CP46, Alternate Part Number HYVA10016, Alternate Part Number MI-00275475, Alternate Part Number MINO-00223F21184	Product Weight 0.72 lbs

Similar Products

Model Number	Size	Thread 1	Materials	Maximum Operating Pressure	Rated Flow	CV Factor	A	B	C	D
F10B Hydraulic/Pneumatic Flow Control	1/8	1/8-27 NPT	Brass	2000	1.5	0.2000	0.69	0.88	0.2	1.75
F20B Hydraulic/Pneumatic Flow Control	1/4	1/4-18 NPT	Brass	2000	3	0.4300	0.88	1	0.36	2.38
F20S Hydraulic/Pneumatic Flow Control	1/4	1/4-18 NPT	Steel	5000	3	0.4300	0.88	1	0.36	2.38
F25B Hydraulic/Pneumatic Flow Control	3/8	3/8-18 NPT	Brass	2000	5	0.7800	1.06	1.81	0.34	2.75
F25S Hydraulic/Pneumatic Flow Control	3/8	3/8-18 NPT	Steel	5000	5	0.7800	1.06	1.81	0.34	2.75
F30S Hydraulic/Pneumatic Flow Control	1/2	1/2-14 NPT	Steel	5000	8	1.2400	1.31	1.44	0.47	0.19

Product Questions & Answers (1)

Question by: Stan M on Dec 11, 2025, 11:01 AM

Got a pneumatic system running at around 1800 PSI and need to control flow in one direction only, will this valve hold up to that kind of setup?

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

Brass construction makes this one a solid fit for pneumatic systems and lower-pressure hydraulic applications. It's rated up to 2000 PSI for non-shock service, so 1800 PSI falls within that range comfortably. The check built into the design allows controlled flow one way and free flow the other, which sounds like exactly what you're describing. Just keep in mind the pressure rating is for steady-state service, not shock or surge conditions.