though it is factory-calibrated for NAT gas at a 3

effectively operating without the need for air shutters or secondary shields

Which White-Rodgers controls fit this well

such as the MWMA012S4-2P

Designed with an auto-reset function

Resideo VCZAS1100 Valve 319825-402 though it is factory-calibrated forThe Resideo VCZAS1100 Valve is a professional grade 1 inch sweat zone valve designed for precision in high demand hydronic environments. This two way cartridge cage valve features a 6. 6 Cv rating and a linear flow profile, making it the standard choice for balancing domestic and light commercial heating and cooling systems. Built with a rugged bronze body and a stainless steel stem, the assembly provides a reliable 60 psi close off pressure rating,