this 2-way internal pilot-operated valve handles saturated steam up to 50 PSI and hot water up to 150 PSI

it eliminates the maintenance requirements of belt-driven systems while ensuring quiet

This assembly serves as the direct replacement for the legacy 5H79955-1

Field Durability: Constructed from high-tensile materials to withstand high cycle rates without losing tension or inducing "hum" in the regulator line

and Luxaire models like the 2970A766

Johnson Controls V47AD-1 Valve Els PW 29614 this 2-way internal pilot-operated valveThe Johnson Controls V47AD 1 is a 1" NPT temperature actuated water regulating valve designed for modulating the flow of water or glycol in heavy duty commercial and industrial cooling applications. This direct acting valve opens on a temperature increase to maintain precise setpoints within a 75 to 135 degree F cross ambient range. Built with a robust cast iron body and corrosion resistant internal componentsincluding a stainless steel stem and disc