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Brass Inline Needle Valve, Female 3/8-18 NPT Ports, Up to 13.50 GPM & 2000.00 PSI

Description & Features

The Brass Inline Needle Valve Female 3/8-18 NPT Ports Up to 13.50 GPM & 2000.00 PSI is engineered for controlled flow in both directions in pneumatic and low-pressure hydraulic systems. The valve features a body available in brass carbon steel or stainless steel with a brass needle on brass versions and a 416 stainless steel needle on steel and stainless steel versions.

Designed for a wide adjustment range thanks to its fine thread this needle valve allows for precise flow adjustments that can be secured with a standard locknut. Additionally the O-ring packing is made of Viton and the backup washer is crafted from Teflon.

This robust valve can operate within a temperature range from -15F to 400F and supports a maximum operating pressure of up to 2000 PSI. An optional knurled knob enhances ease of use and a tamperproof adjustment key provides added security.

Applications include precise flow control under pressure with a rated flow capacity of up to 13.50 GPM making it suitable for various industrial uses.

MPN: N25B

Supplier Part Number: N25B

Specifications

A 1.06	B 1.81	CV Factor 0.78	E 2.25	Brand Deltrol Fluid Products	Brand Deltrol Fluid Products	Pack Size 1.00	UOM EA	Materials Brass	Maximum Operating Pressure 2000	Rated Flow 13.50	Rated Flow 13.5	Size 3/8	Supplier Part Number N25B	Thread 1 3/8-18 NPT	Alternate Part Numbers Alternate Part Number 10000-79, Alternate Part Number C1DF61	Product Weight 0.59 lbs

Similar Products

Model Number	Size	Thread 1	Materials	Maximum Operating Pressure	Rated Flow	CV Factor	A	B	E	Price	Action
N20B Hydraulic/Pneumatic Needle Valve	1/4	1/4-18 NPT	Brass	2000	7	0.4300	0.88	1	2
N25B Hydraulic/Pneumatic Needle Valve	3/8	3/8-18 NPT	Brass	2000	13.5	0.7800	1.06	1.81	2.25

Product Questions & Answers (2)

Question by: Rex E on Nov 2, 2025, 10:47 AM

reckon this'll work alright with some hydraulic equipment running around 1800 PSI? Don't wanna blow nothin' up.

Answer by: Customer Support on Nov 3, 2025, 1:14 PM

This valve can handle pressures up to 2000 PSI, so it should work fine in your setup as long as you stay below that limit. Just be sure your system doesn't have pressure spikes that could exceed the valve's rating.

Question by: Cheryl G on Nov 26, 2025, 9:33 AM

Running this on a pneumatic setup, does the brass body hold up okay, or should I be looking at one of the steel versions?

Answer by: Customer Support on Nov 28, 2025, 9:06 AM

Brass versions are rated for pneumatic systems and lower pressure hydraulic applications, so if you're staying in that territory you're fine. The 2000 PSI max and 13.50 GPM flow capacity cover a solid range of pneumatic work. Steel builds are really meant for heavier hydraulic duty. Stick with brass for air and you won't have any issues.