Natural gas pressure regulator P39

gasspringPTFE

Product overview
The BelGAS P39 configurable gas pressure regulator provides a wide range of outlet pressures for instrument and low‑flow high‑pressure applications. Available with three interchangeable seat materials and six spring ranges, the P39 enables precise downstream pressure control. Three standard outlet ports simplify piping and offer installation flexibility.

Features:

• Largest selection of outlet pressures in its class
• Unique design with three standard outlet ports
• Four-seat valve disk with 90° rotation capability
• Interchangeable tamper‑resistant or T‑handle adjustment
• Optional tapped vent on bonnet
• P39SS stainless steel version compliant with NACE MR0175
• Choice of seat materials to match application requirements

Applications:

• Initial reduction of high‑pressure natural gas for instrument or control valve supply
• Natural gas instrumentation columns
• Supply to downstream low‑flow devices (catalytic heaters, valve actuators, pressure controllers, chemical injection pumps)

Technical specifications:

• Model: P39
• Series: Instrument Supply Series
• Port size: 1/4 NPT, 1/2 NPT
• Orifice size: 5/64"
• Spring ranges: 0–30 PSIG / 2.1 BAR; 0–60 PSIG / 4.1 BAR; 0–120 PSIG / 8.3 BAR; 0–150 PSIG / 10.3 BAR; 0–225 PSIG / 15.5 BAR; 0–500 PSIG / 34.5 BAR
• Seat materials: Nylon, TFE, PTFE
• Application(s): Industrial
• Pilot operated: No
• Body inlet size: 1/4 NPT, 1/2 NPT
• Body outlet size: 1/4 NPT, 1/2 NPT (3 ports)
• Connection: NPT
• Diaphragm material: 302 stainless steel or Monel 400
• Temperature range: –40°F to 225°F / –46°C to 106°C
• Max inlet body pressure: 6000 PSIG / 414 BAR
• Body/bonnet/bottom plug materials: Brass, nickel‑plated brass, or stainless steel (options)
• Tamper‑resistant cover materials: Brass, nickel‑plated brass, or stainless steel (options)
• Seals: TFE, nitrile, or TFE/neoprene
• Valve spring: 17‑7PH stainless steel or MP35N (UNS30035)
• Range spring: spring steel, chrome silicon