MENSI Natural Gas Pressure Regulator 3/4-in FNPT, Adjustable 4 in. W.C. NG / 10 in. W.C. LP for Commercial Ranges

MENSI Natural Gas Pressure Regulator is an adjustable 3/4" FNPT regulator designed to deliver stable 4" W.C. for natural gas and up to 10" W.C. for propane on commercial stove and range pipelines.

This compact pressure regulator gives kitchens and light-commercial installations a reliable way to control outlet gas pressure from common supply lines. Factory-set for natural gas at 4" W.C., the unit accepts inlet pressures up to 1/2 psi and can be adjusted to suit propane service. Constructed for routine kitchen environments, it supports straightforward plumbing connections with 3/4" female NPT inlet and outlet threads.

How does the MENSI regulator fit into a commercial range gas line?

The regulator connects directly into a 3/4" gas pipe using its female NPT inlet and outlet, replacing or adding to existing pressure control on the supply run. Installation is typical for inline regulators and requires proper thread sealing and support to avoid strain on fittings.

• 3/4" FNPT inlet and outlet for threaded pipe or adapters
• Inline installation near appliance or upstream supply shutoff
• Compact body minimizes space behind or under ranges

Can I use this regulator for both natural gas and propane?

Yes — the unit is shipped set for natural gas at approximately 4" W.C. The spring housing allows adjustment toward higher outlet pressure for propane service (up to about 10" W.C.). Always verify final pressure with a manometer and follow local codes when switching fuel types.

• Factory natural gas setting: 4" water column
• Adjustable range up to 10" W.C. for LP when re-tuned
• Requires pressure testing after conversion to ensure safe operation

What operating conditions and temperature range should I expect?

The regulator is designed for typical indoor kitchen temperatures and moderate environmental conditions. Recommended operating range is 32°F to 225°F (0°C to 107°C); extreme cold or proximity to heat sources may affect the internal spring and change outlet pressure.

• Rated inlet pressure tolerance: up to 1/2 psi
• Operating temperature: 32°F–225°F (0°C–107°C)
• Avoid mounting directly on heat-producing equipment or exposed outdoor locations without protection

How do I adjust and maintain the pressure correctly?

Adjustment is performed at the regulator head; turn the central adjustment to raise or lower outlet pressure while monitoring with a manometer. Routine checks for leaks, secure fittings, and correct outlet pressure help maintain safe, consistent operation.

• Use a calibrated manometer for final adjustment
• Inspect thread sealant and fittings after installation
• Perform periodic leak tests and pressure verification per local codes

Who is this for: MENSI's 3/4" FNPT pressure regulator is intended for commercial kitchens, restaurant operators, service technicians, and plumbers who need a compact, adjustable regulator for stove and range pipelines. It suits situations where a reliable, serviceable regulator is required to control low-pressure natural gas or elevated LP pressures, and where threaded 3/4" connections are standard. If you require precise pressure control, routine testing and professional installation are recommended to meet safety codes and equipment specifications.