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Brass inline swing check valve with FNPT ends 3.25 in long

Value Brand

Value Brand Swing Check Valve 1 1/2" FNPT 3.25 in

SKU CH-2A4B-C7NCX

Inline swing check valve with brass body and FNPT connections, rated 200 psi at 73 °F and 120 psi steam

  • Size1 1/2 in
  • Prevents backflow with a 0.725 psi cracking pressure
  • Brass body handles up to 200 psi water pressure
  • Operates from 32 to 212 degrees Fahrenheit
  • Delivers 76 gpm flow through 1 1/2 inch FNPT connections
  • Horizontal swing design ensures reliable inline operation

Application and Flow

This ZORO SELECT swing check valve controls flow in a horizontal pipeline using an inline brass body with a 1 1/2" FNPT connection. The mechanism opens at a cracking pressure of 0.725 psi and delivers a flow capacity of 76 gpm. It operates between 32 and 212 degrees F with a maximum water pressure of 200 psi at 73 degrees F. Steam service is rated to 120 psi WSP.

Installers and System Limits

The valve suits plumbers and maintenance teams fitting horizontal brass check valves on 1 1/2" NPT lines carrying water or steam within the stated pressure and temperature range. It is not for vertical mounting, full-port requirements, or systems exceeding 200 psi water pressure or 120 psi steam pressure. Buyers needing a different connection type, seal material, or orientation should look elsewhere.

Cracking Pressure

The cracking pressure of 0.725 psi determines the minimum differential pressure required to open the swing disc and allow flow. If the system cannot reliably generate this pressure, the valve will remain closed and block the line. Confirm the available pressure drop before selecting this model.

How it compares

Measured against everything we stock in Bath Accessories & Soap Dispensers, at today’s prices. Recalculated every night.

Price $39.99
Typical for this category: the median of 1,499 items is $39.99.

Specifications

Product
Brand nameZORO SELECT
Product typeOther
Size & build
Size1 1/2 in

Questions about this item

Will the brass swing mechanism generate noticeable noise or heat when water runs through it all day?

The valve has a 0.725 psi cracking pressure and a 76 gpm flow rating, so normal residential flow stays well below the 200 psi limit at 73 °F, producing no measurable heat and only typical flow noise.

What pipe and thread type must already be in place for this 1 1/2" FNPT valve to install directly?

You need 1 1/2 inch female NPT threads on both the supply and outlet pipes; the valve connects inline with no adapters required.

Can this brass swing check valve stay in a line that also carries older galvanized or copper piping without galvanic issues?

The body, seat and seal are all brass, so it is compatible with existing copper or brass lines; dielectric unions are recommended if connecting directly to galvanized steel.

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