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Brass inline swing check valve, 1-1/4 inch FNPT connections, model 967

Hammond Valve Corp

Hammond Valve Corp 967 1-1/4 In FNPT Brass Swing Check Valve

SKU CH-9NGZ-NKXAA MPN 967

A brass inline swing check valve with FNPT connections that opens at 0.750 to 1.000 psi and handles 200 psi water pressure at 150 degrees F

  • TypeDrain Components
  • Prevents backflow with inline swing mechanism
  • Brass body resists corrosion for long service life
  • Operates from -20 °F up to 150 °F
  • Handles 200 psi water pressure at 150 °F
  • Opens at low .750 to 1.000 psi cracking pressure

1-1/4 Inch FNPT Brass Swing Check Valve

The Hammond Valve Corp 967 is a brass inline swing check valve designed for drain and trap applications. It suits plumbers and maintenance technicians who need reliable backflow prevention in water lines. The valve handles horizontal or vertical mounting orientations for flexible installation. It operates within a temperature range down to -20 degrees Fahrenheit.

Pressure and Temperature Limits

This valve withstands a maximum water pressure of 200 psi at 150 degrees Fahrenheit. It carries no steam pressure rating, so it must not be used in steam systems. The cracking pressure falls between .750 and 1.000 psi, allowing flow to begin with minimal head pressure. Exceeding the stated water pressure or temperature limit risks seal failure or body damage.

Installation Practicalities

The FNPT x FNPT threaded connections allow direct assembly onto standard 1-1/4 inch pipe without special tools. Brass-on-brass sealing requires proper thread sealant to prevent leaks at the joints. The inline swing mechanism needs sufficient clearance to operate freely inside the pipe run. Debris in the line can foul the swing disc, so flushing the system before installation is advisable.

Highlights

  • Prevents backflow with inline swing mechanism
  • Brass body resists corrosion for long service life
  • Operates from -20 °F up to 150 °F
  • Handles 200 psi water pressure at 150 °F
  • Opens at low .750 to 1.000 psi cracking pressure

Specifications

TypeDrain Components
BrandHammond Valve
Model967 1 1/4

Questions about this item

Which cracking-pressure range should I pick for my system?

This model opens between .750 and 1.000 psi, so choose it when your back-pressure requirement falls inside that band.

What does the 200 psi @ 150 Degrees F rating mean when the valve is installed?

It is the maximum water pressure the brass body can handle at 150 °F; above that temperature the allowable pressure drops.

How does the FNPT x FNPT connection affect what pipe I can use?

Both ends have female NPT threads, so you need male NPT nipples or adapters in 1-1/4 in. size to join the valve into the line.

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