For technicians replacing older Penn/Johnson Controls thermostats

accommodating diverse electrical and mechanical requirements

4 Cv flow coefficient

Can I use this for a 15 PSI safety limit check

effectively removing the installation limitations and leak risks associated with capillary tubes

Weil McLain 381-800-476 Damper 30067439-890 For technicians replacing older Penn/JohnsonThe Weil McLain 381 800 476 is a 6 inch automatic vent damper assembly designed for high efficiency draft control on residential and commercial gas boilers. This OEM Weil McLain part functions as the direct replacement for the legacy 510 512 346 damper, providing a seamless field upgrade for service technicians. Engineered specifically for compatibility with the Weil McLain PEG 40, CGa 5, and CGa 6 series, this kit features an integrated motor that