P37 Natural Gas & Propane Regulator
We stock the P37 in 1/2" and 3/4" NPT, in both 0-30 PSI and 0-125 PSI spring ranges. Other spring ranges are available to order — Contact Us to confirm availability.
The BelGAS P37 natural gas and propane regulator gives you many of the same core characteristics as the BelGAS P38 — including its balanced pintle design and non-relieving, bubble-tight construction — at a reduced cost. At 110 SCFM (16.5 MBTU/hr), the P37 offers flow rates comparable to current market suppliers, making it a smart choice anywhere the P38's higher flow capacity isn't needed and a lower price point matters.
Looking for higher capacity? If your application needs more flow than the P37's 110 SCFM rating, see our BelGAS P38, which shares the same balanced pintle design at 260 SCFM (27 MBTU/hr). For most lower- and mid-volume instrument and control applications, though, the P37 delivers the stability you need without paying for capacity you won't use.
The balanced pintle design minimizes unsteady changes in outlet pressure caused by inlet pressure fluctuations, and the Bellofram rolling diaphragm construction is built for enclosed-space use and high-volume applications alike. The regulator is UL listed and rated for a wide temperature range, making it suitable across a range of industrial and instrumentation environments.
Features:
- Balanced pintle design — minimizes outlet pressure fluctuation from inlet pressure changes
- Bubble tight / non-relieving
- Bellofram rolling diaphragm
- Suitable for enclosed space use
- UL listed
- 110 SCFM (16.5 MBTU/hr) flow capacity
Applications:
- Pneumatic controllers
- Valve positioners
- Actuation
- Fuel gas
- Compressed air
Product Documentation:
- P32 / P36 / P37 / P38 Spec Sheet
- P37 Installation & Operation Manual (IOM)
Specifications
| Spec | Detail |
|---|---|
| Model | P37 |
| Series | Instrument Supply Series |
| Port Size | 1/2" and 3/4" NPT — in stock. |
| Connection | NPT |
| Sensitivity | 1" Water Column |
| Spring Range | 0-30 PSIG and 0-125 PSIG — in stock. Also available (order-in): 0-10, 0-60 PSIG |
| Max Inlet Body Pressure | 400 PSIG (28 BAR) |
| Flow Capacity | 110 SCFM (16.5 MBTU/hr) |
| Diaphragm | Bellofram Rolling Diaphragm — Nitrile Elastomer with Polyester Fabric |
| Temperature Range | -40°F to 200°F |
| Application | Industrial |
| Pilot Operated | No |
| Relief | Non-relieving (separate relief valve recommended per NFPA 58) |