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Brass swing check valve with FNPT threads

Hammond Valve Corp

Hammond Valve Corp 967 1-1/2 In FNPT Brass Trap

SKU CH-KEC1-FVB3A MPN 967

A brass swing check valve with 1-1/2 inch FNPT threads prevents backflow in drainage systems

  • TypeDrain Components
  • Swing check design prevents backflow in drainage systems
  • Brass construction resists corrosion for long service life
  • FNPT threads allow direct connection to standard pipe fittings
  • 1-1/2 inch size fits common residential and commercial drain lines
  • New condition ensures factory-original performance and reliability

Swing Check Valve 1-1/2 In FNPT

The Hammond Valve Corp 967 is a brass swing check valve designed for plumbing drainage systems. It suits installers who need a reliable non-return device on a 1-1/2 inch female NPT line. The component prevents backflow in drain applications where gravity flow is expected. Buyers needing a different connection type or size cannot use this model.

Brass Construction and FNPT Threading

The all-brass body resists corrosion in typical drain environments and handles standard plumbing pressures. Female NPT threads on the 1-1/2 inch port allow direct connection to male-threaded pipe or fittings without adapters. The swing mechanism opens under forward flow and seats automatically when flow stops. No electrical parts or external controls are included with this valve.

Simple Threaded Installation

Installation requires threading the valve onto a prepared male NPT pipe end using appropriate pipe sealant or tape. The swing disc must hang vertically downward so gravity closes it, meaning the valve body must be oriented horizontally in the line. Misalignment or debris in the seat area are the most common causes of leakage after fitting. Access to the internals for cleaning requires unthreading the valve from the line.

Highlights

  • Swing check design prevents backflow in drainage systems
  • Brass construction resists corrosion for long service life
  • FNPT threads allow direct connection to standard pipe fittings
  • 1-1/2 inch size fits common residential and commercial drain lines
  • New condition ensures factory-original performance and reliability

Specifications

TypeDrain Components
BrandHammond Valve
Model967 1 1/2

Questions about this item

How often should the swing check valve's internal flapper or seat be inspected for wear?

Inspect the brass flapper and seat annually; replace if corrosion or debris prevents a tight seal against backflow.

What pressure or temperature limit will the brass body reach first during continuous hot-water circulation?

The brass construction handles typical hydronic temperatures, but sustained pressure above the valve's rated class will stress the FNPT threads first.

Will the 1-1/2 inch FNPT brass valve transmit water-hammer noise through copper piping when the pump cycles?

The swing-check design can slam shut on sudden flow reversal; installing a spring-assisted check or air chamber upstream reduces hammer noise.

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