055610 Mechanical Gas Valve 2in

The Ansul 055610 is a UL-listed mechanical gas shutoff valve for 2-inch pipe, designed for use with ANSUL R-102 restaurant fire suppression systems and ANSUL Piranha wet chemical systems. During a system discharge, the 055610 automatically cuts off the gas supply to all protected cooking appliances — preventing reignition of cooking oil or grease fires after the wet chemical agent has suppressed the initial fire event. The 2-inch pipe size makes the 055610 the largest in the ANSUL mechanical gas valve series, suited for high-volume commercial kitchen installations with the largest gas supply mains.

The complete ANSUL mechanical gas valve series covers five pipe sizes for the full range of commercial kitchen gas supply configurations. The 055610 (2-inch) is the largest, with the series also including the 055598 (3/4-inch), 055601 (1-inch), 055604 (1-1/4-inch), and 055607 (1-1/2-inch). All models are UL listed and designed specifically for ANSUL R-102 and Piranha system integration — ensuring reliable, coordinated gas shutoff with the ANSUL Automan control head or compatible release module. The ansul gas valve and ansul valve installation are critical NFPA 96 compliance components for every ANSUL kitchen suppression system protecting gas-fueled cooking equipment.

For fire protection contractors installing or servicing ANSUL R-102 and Piranha kitchen fire suppression systems in large commercial kitchens, the 055610 is the 2 inch gas valve solution for high-capacity gas supply mains. Verify the ansul gas valve specs and ansul valve location per the ANSUL R-102 system design documentation before specifying the 055610 — the 2-inch size is required only when the gas supply line serving the protected cooking zone is actually 2-inch pipe. Gas valve installation per ansul mechanical gas valve installation requirements and NFPA 96 mandatory gas shutoff valve placement is required for all ANSUL kitchen suppression system gas valve configurations.

ANSUL Mechanical Gas Valve Series — Full Size Range

Placement

Install the 055610 in the 2-inch gas supply line upstream of all protected cooking appliances per NFPA 96, the ANSUL R-102 system manual, and applicable local gas codes. The ansul valve location must be accessible for manual reset after system discharge. Identify the ansul gas valve location with gas shut off signage per code. Verify the trip cable routing from the gas valve to the ANSUL Automan control head is within the maximum length specified in the ANSUL R-102 system design documentation.

Semi-Annual Testing

Test the 055610 at every semi-annual NFPA 17A and NFPA 96 inspection. Trigger a simulated system discharge and confirm the valve closes fully and the manual reset functions correctly. A gas valve that fails to close is an immediate red-tag deficiency. Document in the fire suppression system inspection record. The ansul valve installation and ansul valve gas service requirements specify the complete test procedure for the ANSUL mechanical gas valve series.

Is the 055610 compatible with both natural gas and LP gas?

Verify natural gas and LP gas compatibility in the ANSUL R-102 system documentation for the 055610. The ansul gas valve installation instructions specify the approved gas types for each valve model. Gas valve listings can differ between natural gas and LP gas service — confirm with authorized ansul distributors before installation in LP gas-fueled commercial kitchens.

Can the 055610 be used with Pyro-Chem or Amerex kitchen systems?

The 055610 is listed specifically for ANSUL R-102 and Piranha systems. The trip cable geometry and actuation mechanism are designed for ANSUL Automan integration. For Pyro-Chem systems use the appropriate GV-series gas valve, and for Amerex KP systems use the 12790, 12791, or 12792 mechanical gas valves. Always match the gas valve to the system manufacturer to maintain UL 300 compliance.