Siemens Building Technology 257-02040 Valve Assembly 322056-301 this manual reset component monitors

this manual reset component monitors internal heat exchanger temperatures

it is functionally identical to the Lennox 18M6501 and serves as a direct substitute for the Honeywell VR8205Q-2746

This heavy-duty unit is designed to interface seamlessly with 4-inch high-pressure and 5-inch low-pressure valve bodies

This is a standard service kit intended for direct replacement

Siemens Building Technology 257-02040 Valve Assembly 322056-301 this manual reset component monitorsThe Siemens Building Technology 257 02040 is a specialized 2 way normally open control valve assembly designed for high performance hydronic flow regulation. As a veteran grade pneumatic HVAC control valve, this unit is engineered with a 1 2 inch angle NPT by union male connection, facilitating streamlined installation in tight mechanical spaces. The forged brass body and internal brass trim ensure rugged reliability against the constant cycling of