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Stainless steel pressure regulator with 1/2 inch connections and adjustment knob

Watts

Watts SS263AP-M1-AB 3-50 PSI Pressure Regulator 1/2 in

SKU CH-V1N8-JTKP1

Stainless-steel pressure regulator adjusts water pressure from 3 to 50 psi with a 1/2 in connection and 140 °F maximum temperature

  • Adjustable pressure control from 3 to 50 psi
  • Stainless steel body resists corrosion in commercial and residential systems
  • Rated for 300 psi maximum inlet pressure for safe operation
  • 140 °F maximum temperature rating handles hot water supply lines
  • Compact 2 1/8 in length fits tight plumbing spaces

Pressure Regulator 3-50 PSI

The Watts SS263AP-M1-AB regulates water pressure between 3 and 50 psi for commercial, industrial and residential plumbing systems. Its stainless steel body and Buna-N seals handle a maximum inlet pressure of 300 psi and fluid temperatures up to 140 degrees F. The unit fits 1/2 inch pipe connections on both inlet and outlet with a 1/4 inch gauge port for monitoring.

Inline Installation Requirements

The regulator installs directly into a 1/2 inch line and measures 2 1/8 inches in length with a height of 4 3/4 inches. It needs straight pipe on both sides for accurate sensing and a pressure gauge on the 1/4 inch port to verify the set point. The stainless construction resists corrosion, freeing the system from frequent brass-component replacement in aggressive water conditions.

Sustained Load Behaviour

Under continuous flow the diaphragm maintains the chosen pressure without creep as inlet conditions vary up to the 300 psi limit. The Buna-N seals retain elasticity at the 140 degree F maximum temperature, preventing leakage during extended hot-water service. Pressure adjustment remains stable over long periods, reducing the need for periodic recalibration in high-cycle applications.

How it compares

Measured against everything we stock in Faucet Valves & Replacement Parts, at today’s prices. Recalculated every night.

Price $832.99
Pricier than about 91% of the 1,132 comparable items (median $54.99).

Specifications

Product
Brand nameWATTS
Product typeOther

Questions about this item

How does the 300 psi maximum inlet pressure limit sustained operation?

The regulator is rated for a maximum inlet pressure of 300 psi, so the supply must stay at or below that level during continuous use.

What heat-related limit applies when the valve runs all day?

The maximum operating temperature is 140 Degrees F, so the water supply must not exceed that temperature during extended service.

What pipe connection must already be in place for this regulator to install?

The inlet and outlet are both 1/2 in pipe size, so a 1/2 in plumbing line is required for the unit to function.

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