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Bronze boiler feed water pressure regulator with FNPT connections

Watts

Watts 1156F Boiler Feed Water Pressure Regulator 10 to 25 psi

SKU CH-0KF8-9H4AP

Regulates boiler feed water pressure between 10 and 25 psi with a bronze body rated to 100 psi and 212°F

  • TypeOther
  • Adjustable pressure range suits varied boiler systems 10 to 25 psi
  • Bronze body resists corrosion in continuous water service
  • 1/2 inch FNPT connections fit standard piping
  • Operates up to 212 degrees F for hot water supply
  • Maximum inlet pressure 100 psi protects downstream components

Boiler feed water regulator

The Watts 1156F regulates boiler feed water pressure between 10 and 25 psi for commercial and residential systems. It accepts 1/2 inch FNPT connections and has a bronze body rated to 212 degrees Fahrenheit. Maximum supply pressure is 100 psi.

Installers needing fixed-range control

This unit suits hydronic heating loops that require a set reduction to 10 to 25 psi without a gauge port. It does not serve systems needing adjustable ranges outside this window or installations that require integrated pressure indication.

Fits 1/2 inch piping with bronze durability

The regulator threads directly into half-inch FNPT lines and uses Buna-N seals for hot water service up to 212 degrees Fahrenheit. Its compact bronze construction handles 100 psi inlet pressure while freeing space in tight mechanical rooms.

Highlights

  • Adjustable pressure range suits varied boiler systems 10 to 25 psi
  • Bronze body resists corrosion in continuous water service
  • 1/2 inch FNPT connections fit standard piping
  • Operates up to 212 degrees F for hot water supply
  • Maximum inlet pressure 100 psi protects downstream components

Specifications

BrandWATTS
TypeOther

Questions about this item

What pipe thread size must my supply line have to connect to the 1/2 in FNPT inlet?

The regulator uses a 1/2 in FNPT connection so the mating supply line must carry the same 1/2 in NPT male thread.

Will the bronze body and Buna-N seals handle the 212 °F maximum temperature of my existing boiler loop?

Yes, the bronze body and Buna-N seals are rated for continuous operation up to 212 °F, matching typical residential and commercial boiler conditions.

How can I verify the outlet pressure stays within the 10 to 25 psi range after installation?

Install a pressure gauge on the downstream side and confirm the reading settles between 10 and 25 psi while the boiler feeds.

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