Always verify chemical compatibility with bellows materials for specialized applications

utilizing the same physical footprint for easy retrofitting

While the housing material has changed to stainless steel

verifying the #47 drill size is paramount for aligning with the manifold pressure specifications of the specific Reznor model

Operational Efficiency: Restores rapid solenoid actuation and prevents bypass leakage common in worn internal components

Weil McLain 383-500-025 Gas Valve/Venture Kit Freon Always verify chemical compatibility withThe Weil McLain 383 500 025 Gas Valve Venturi Kit is an essential OEM replacement component designed specifically for Ultra Gas Boilers (Size 155). As a veteran grade replacment gas valve, this assembly ensures the negative pressure regulated delivery of fuel required for high efficiency modulating condensing boilers. This Weil McLain Gas Valve Venturi Assembly is engineered to maintain precise air to fuel ratios, supporting the 5: 1 turn down ratio