Pyro-Chem GV-125 Gas Valve 550595

The Pyro-Chem GV-125 (P/N 550595) is a factory-approved automatic gas shutoff valve for 1-1/4-inch pipe, designed for Pyro-Chem Kitchen Knight II kitchen fire suppression systems. The GV-125 automatically closes the gas supply line during a system discharge, preventing reignition of protected cooking equipment after the wet chemical agent has suppressed the initial grease fire. As a gas safety shut off valve, the GV-125 is required by NFPA 96 for all commercial kitchen fire suppression systems protecting gas-fueled appliances where the supply pipe is 1-1/4-inch.

The 1-1/4-inch pipe size of the GV-125 makes it the correct gas range shut off valve for medium-capacity commercial kitchen gas supply configurations — typically serving larger fryers, ranges, or multi-appliance manifolds where gas flow demand exceeds what a 1-inch line can support. Selecting the correct GV model for the pipe size is critical: an undersized gas valve creates a restriction that reduces appliance performance during normal operation, while an oversized valve may not properly seal under low-pressure conditions. Always match the commercial kitchen gas shut off valve to the actual pipe size using the pyro chem kitchen knight manual specifications.

The GV-125 is part of the complete Pyro-Chem GV series spanning 3/4-inch through 2-inch pipe sizes, all available through authorized pyro chem distributors. The pyro chem price list and pyro chem supply channels provide complete ordering information for the entire GV series. The gas shut off valve for range and commercial kitchen emergency gas shut off valve applications covered by the GV series make it one of the highest-specification components in any Pyro-Chem kitchen fire suppression system installation.

Install the GV-125 in the 1-1/4-inch gas supply line upstream of the protected cooking appliances per NFPA 96 and local gas code requirements. Identify the gas safety valve shut off location with gas shut off signage per applicable codes. Connect the actuation wiring to the Pyro-Chem Kitchen Knight II control head per the pyro chem kitchen knight manual. Test the gas auto shut off valve at every semi-annual NFPA 17A and NFPA 96 inspection by triggering a simulated discharge and confirming the GV-125 closes fully and the manual reset functions correctly. A gas safety shut off valve that fails to close or reset is an immediate red-tag deficiency. Document in the fire suppression system inspection record.

Is the GV-125 compatible with natural gas and LP gas systems?

Verify the GV-125 gas safety shut off valve gas type compatibility in the pyro chem fire suppression system documentation. Gas valve approvals can differ between natural gas and LP gas service — confirm the correct approval for your specific gas type before installation. Authorized pyro chem distributors can confirm gas type compatibility for all GV series models.

What happens if the gas valve fails to close during a system discharge?

A gas safety valve shut off failure during a system discharge is a critical NFPA 96 deficiency. The continued gas supply can cause reignition of the cooking equipment grease fire after the wet chemical agent charge has been depleted. If the GV-125 fails to close during testing, it must be replaced immediately with a new OEM valve from authorized pyro chem supply sources before the system is returned to service.