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BASO Gas Products H91MA-4C REVB 1" Automatic Gas Shutoff Valve 1/2 PSI 505000 BTU 120V

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Special Price $343.64 Regular Price $381.44
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H91MA-4C REVB
BASO Gas Products H91MA-4C REVB Automatic Gas Shutoff Valve with a power of 120V for industrial and commercial use. It has a pipe size of 1” NPT and a BTU of 505,000 it is capable of handling large gas flow demands, and therefore suitable for use in gas-fired equipment, boilers, and furnaces. This valve also has a self-closing mechanism that closes under any conditions making it safe from gas leakage. It works well with a maximum inlet pressure of 1/2 PSI to ensure efficient performance without the wastage of gas.
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HVAC Controls & Electrical, Valves
Manufacturer:
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Specifications

  • Type: Automatic Gas Shutoff Valve
  • Pipe Size: 1" NPT
  • Voltage: 120V
  • BTU Rating: 505,000 BTU
  • Maximum Inlet Pressure: 1/2 PSI
Manufacturer Name: BASO Gas Products
Product Number: H91MA-4C REVB
OEM Part Number: H91MA-4C REVB
Product Description: 1"120V 1/2#Gas Vlv 505,000Btuh
Weight:1.86lbs/843.68g

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Product Questions (2)
Customer Questions
What maintenance is required for the BASO Gas Products H91MA-4C REVB Automatic Gas Shutoff Valve?

Inspect the valve regularly for gas leaks, corrosion, and secure electrical connections to ensure safe operation. Clean external surfaces to prevent dust buildup that may affect performance. Periodically test the shutoff operations to confirm proper response. Maintenance is essential for safety, accuracy, and preventing gas flow failures in emergency conditions.

What are common issues with the BASO Gas Products H91MA-4C REVB Automatic Gas Shutoff Valve?

  • Valve failing to open or close properly.
  • Electrical coil burnout or wiring faults.
  • Gas leakage due to worn seals.
  • Intermittent shutoff response or delayed activation.

Installation Steps

Step 1: Shut off main gas supply and electrical power; confirm zero gas pressure before work.

Step 2: Remove existing old valve and clean pipe threads; check for debris or damage.

Step 3: Install new valve in correct flow direction using approved pipe sealant.

Step 4: Reconnect control wiring securely to valve terminals.

Step 5: Restore gas slowly, check all joints for leaks with approved leak solution.

Step 6: Energize system, test valve operation, and check safe ignition and shutdown response.