Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
MECLINE Check Valve: Piston, Inline Valve Body, 3/8 in Pipe Size, FNPT x FNPT, Brass - Brass Inline Piston Check Valves
MECLINEBrass Inline Piston Check Valves

MECLINE Check Valve: Piston, Inline Valve Body, 3/8 in Pipe Size, FNPT x FNPT, Brass

The MECLINE Check Valve: Piston (MPN CV3-40038) is a brass inline piston check valve with a 3/8 in pipe size and FNPT x FNPT female NPT connections. This inline valve body is designed for straightforward installation…

SKU 3G-OTH-429663

Brand
MECLINE
Item
Check Valve: Piston, Inline Valve Body, 3/8 in Pipe Size, FNPT x FNPT, Brass
Category
Brass Inline Piston Check Valves
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

MECLINE
Manufacturer Part Number
CV3-40038
Type
Inline Valve Body, FNPT x FNPT, Brass, Female, NPT
Pipe Size
3/8 in
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

MECLINE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MECLINE Check Valve: Piston (MPN CV3-40038) is a brass inline piston check valve with a 3/8 in pipe size and FNPT x FNPT female NPT connections. This inline valve body is designed for straightforward installation in piping systems to prevent backflow.

Frequently Asked Questions

What is a MECLINE CV3-40038 check valve used for?

The MECLINE CV3-40038 is a brass inline piston check valve used to prevent backflow in piping systems. It is commonly installed in water, oil, and gas applications where a compact, corrosion-resistant valve is needed to allow flow in one direction only.

What are the specifications of the MECLINE CV3-40038 check valve?

The MECLINE CV3-40038 is a 3/8 in pipe size, inline piston check valve with a brass body and FNPT x FNPT female NPT connections. It is designed for reliable backflow prevention in low-pressure fluid systems. The manufacturer part number is CV3-40038.

Where to buy MECLINE CV3-40038 check valves worldwide?

3G Electric supplies the MECLINE CV3-40038 check valve to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this brass inline piston check valve.

How to install a MECLINE inline piston check valve?

Install the MECLINE CV3-40038 check valve in the correct flow direction as indicated by the arrow on the body. Use thread sealant on the FNPT connections and tighten to standard torque. Ensure the valve is accessible for inspection and that the piping is aligned to avoid stress on the brass body.

Used in

Common applications for MECLINE
Pressure washing systems — MECLINE VRT100-330 unloader valve for bypass pressure regulation at up to 4,800 psi
Industrial water supply lines — MECLINE CV3-40012 brass check valve for backflow prevention in 1/2 inch piping
Compressed air networks — MECLINE CV3-31014 check valve for preventing reverse flow in 1/4 inch air lines
High-pressure cleaning equipment — MECLINE VR54-200 unloader valve for pump protection at 2,900 psi
Hydraulic fluid circuits — MECLINE CV3-40038 check valve for directional control in 3/8 inch oil lines
Irrigation systems — MECLINE brass check valves for maintaining line pressure in agricultural water distribution

MECLINE Products

3G Electric supplies MECLINE brass inline piston check valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
APPROVED VENDOR Swing Check Valve: Swing, Inline Valve Body, 3/4 in Pipe Size, FNPT x FNPT, Brass (MPN 10F323). Key specifications — Brand: APPROVED VENDOR.
APPROVED VENDOR
APPROVED VENDOR Swing Check Valve: Swing, Inline Valve Body, 3/4 in Pipe Size, FNPT x FNPT, Brass (MPN 10F323). Key specifications — Brand: APPROVED VENDOR.
APPROVED VENDOR Piston Spring Check Valve: Piston, Inline Valve Body, 3/8 in Pipe Size, MNPT x MNPT (MPN CHK BRS 610-6M6M-F). Key specifications — Brand: APPROVED VENDOR.
APPROVED VENDOR
APPROVED VENDOR Piston Spring Check Valve: Piston, Inline Valve Body, 3/8 in Pipe Size, MNPT x MNPT (MPN CHK BRS 610-6M6M-F). Key specifications — Brand: APPROVED VENDOR.
APPROVED VENDOR Piston Spring Check Valve: Piston, Inline Valve Body, 3/8 in Pipe Size, MNPT x FNPT (MPN CHK BRS 610-6M6F-B). Key specifications — Brand: APPROVED VENDOR.
APPROVED VENDOR
APPROVED VENDOR Piston Spring Check Valve: Piston, Inline Valve Body, 3/8 in Pipe Size, MNPT x FNPT (MPN CHK BRS 610-6M6F-B). Key specifications — Brand: APPROVED VENDOR.
APPROVED VENDOR Piston Spring Check Valve: Piston, Inline Valve Body, 3/8 in Pipe Size, MNPT x MNPT (MPN CHK BRS 610-6M6M-B). Key specifications — Brand: APPROVED VENDOR.
APPROVED VENDOR
APPROVED VENDOR Piston Spring Check Valve: Piston, Inline Valve Body, 3/8 in Pipe Size, MNPT x MNPT (MPN CHK BRS 610-6M6M-B). Key specifications — Brand: APPROVED VENDOR.
VAL-MATIC Swing Flex Check Valve: Swing, Inline Valve Body, 3 in Pipe Size, Flange x Flange, Std (MPN 503A-DB6F). Key specifications — Brand: VAL-MATIC.
VAL-MATIC
VAL-MATIC Swing Flex Check Valve: Swing, Inline Valve Body, 3 in Pipe Size, Flange x Flange, Std (MPN 503A-DB6F). Key specifications — Brand: VAL-MATIC.
APPROVED VENDOR Piston Spring Check Valve: Piston, Inline Valve Body, 1/2 in Pipe Size, FNPT x MNPT (MPN CHK BRS 810-8F8M-F). Key specifications — Brand: APPROVED VENDOR.
APPROVED VENDOR
APPROVED VENDOR Piston Spring Check Valve: Piston, Inline Valve Body, 1/2 in Pipe Size, FNPT x MNPT (MPN CHK BRS 810-8F8M-F). Key specifications — Brand: APPROVED VENDOR.

More from MECLINE

View all MECLINE parts →
MECLINE Check Valve: Piston, Inline Valve Body, 1/4 in Pipe Size, FNPT x FNPT, Brass, Female, NPT (MPN CV3-31014). Key specifications — Brand: MECLINE.
MECLINE
MECLINE Check Valve: Piston, Inline Valve Body, 1/4 in Pipe Size, FNPT x FNPT, Brass, Female, NPT (MPN CV3-31014). Key specifications — Brand: MECLINE.
MECLINE Check Valve: Piston, Inline Valve Body, 1/2 in Pipe Size, FNPT x FNPT, Brass, Female, NPT (MPN CV3-40012). Key specifications — Brand: MECLINE.
MECLINE
MECLINE Check Valve: Piston, Inline Valve Body, 1/2 in Pipe Size, FNPT x FNPT, Brass, Female, NPT (MPN CV3-40012). Key specifications — Brand: MECLINE.