12792 Amerex 1.25 Mechanical Gas Valve - OEM

The Amerex 12792 is a 1-1/4-inch mechanical pull-to-close brass gas shut-off valve designed for Amerex KP kitchen fire suppression systems. The 12792 uses the same latch-and-spring pull-to-close mechanism as the 12790 (3/4-inch) and 12791 (1-inch) — a trip cable from the Amerex MRM or PRM release module pulls the latch on system activation, allowing an internal spring to close the valve and cut off the gas supply to the protected cooking appliances. The 1-1/4-inch pipe size makes the 12792 the correct gas valve for larger commercial kitchen gas supply configurations where multiple high-BTU appliances share a 1-1/4-inch main supply line.

In large commercial kitchens — busy restaurants, school cafeterias, hospital kitchens, and institutional food service operations — the gas supply manifold serving the cooking line is often 1-1/4-inch or larger to handle the combined BTU demand of multiple fryers, ranges, and griddles operating simultaneously. The 12792 provides the commercial kitchen emergency gas shut off valve capability needed for these larger configurations, cutting off the full 1-1/4-inch gas supply during a Amerex KP system discharge. UL listed for both natural gas and LP gas service.

Together with the 12790 (3/4-inch) and 12791 (1-inch), the 12792 completes the three-size Amerex mechanical gas valve series that covers the full range of commercial kitchen gas supply line sizes for KP system installations. All three are available through authorized amerex distributors as standard amerex fire suppression system parts. For fire protection contractors managing large commercial kitchen portfolios, stocking all three sizes ensures the correct 1 inch gas valve, 3/4 gas valve, or 1 1/4 gas valve is immediately available for any Amerex KP installation or replacement situation without waiting for special orders.

Install the 12792 in the 1-1/4-inch gas supply line upstream of all protected cooking appliances per NFPA 96, the amerex kp system manual, and local gas code. Identify the gas safety shut off valve location with gas shut off signage. In large kitchen installations where the 12792 controls gas supply to multiple appliances, verify the valve placement allows access for manual reset by kitchen personnel without requiring entry into the active fire hazard zone. Connect the trip cable to the Amerex MRM or PRM module per the amerex kp system manual. Test the 12792 at every semi-annual NFPA 17A and NFPA 96 inspection — confirm full valve closure and correct manual reset function. Document in the fire suppression system inspection record.

Is 1-1/4 inch the largest Amerex mechanical gas valve available?

The 12792 at 1-1/4-inch is the largest model in the Amerex KP mechanical gas valve series. For kitchen fire suppression systems requiring gas shutoff on supply lines larger than 1-1/4 inch, consult your amerex distributor regarding available options. Very large commercial kitchen installations with 1-1/2-inch or 2-inch gas mains may require alternative gas shutoff solutions — verify with amerex distributors and the amerex kp system manual for your specific configuration.

Does the 12792 require any special installation tools?

The 12792 uses standard NPT female threaded connections and installs with standard pipe wrenches and thread sealant. No specialty tools are required. However, always verify the gas line is de-pressurized and the gas supply is shut off at the meter before installing or removing the 12792 gas safety shut off valve. Follow all applicable gas code requirements for work on gas supply piping in commercial kitchen environments.