Optimized for infinite flame modulation

This kit addresses common failure points in the Spence T134 pilot valve

The actuator and valve body must be sourced separately based on your specific torque and flow requirements

This specific model is calibrated for R-22

The nominal resistance is 1

Weil McLain 510-811-655 Valve Kit R-410A Optimized for infinite flame modulationThe Weil McLain 510 811 655 Valve Kit is a field proven combination gas control valve engineered for step opening ignition sequences in high efficiency hydronic systems. This 1 2" x 1 2" NPT natural gas valve provides precise pressure regulation, operating from a 0. 9" W. C. low fire setting up to a 3. 5" W. C. high fire output. Designed for compatibility with various Weil McLain boiler parts, this replacement gas valve ensures stable manifold