Weil McLain 510-811-641 Thermopile Gas Valve 24V 3.5" WC 1/2" x 1" for PFG Boilers

The Weil McLain 510-811-641 is a thermopile gas valve designed specifically for PFG series boilers, including models PFG 6 and PFG 7. This OEM replacement valve ensures reliable gas flow control and safe operation of your heating system.

Key Specifications:

• Voltage: 24V thermopile operated
• Gas pressure: 3.5" water column (WC)
• Inlet/outlet connection: 1/2" x 1" NPT
• Direct replacement for Weil McLain PFG 6 and PFG 7 boilers
• OEM part number: 510-811-641

This thermopile gas valve is a critical safety component that controls gas flow to the burner assembly. The thermopile generates the electrical current needed to operate the valve without requiring external power. Designed for natural gas and LP gas applications, this valve meets strict industry standards for residential and commercial heating systems.

Application: Compatible with Weil McLain PFG series atmospheric gas-fired boilers. Verify your model number and existing valve specifications before ordering to ensure proper fitment.