Whether you are servicing a space heater

ensuring the venting system maintains proper static pressure before allowing ignition

The S1-025-26390-001 is usually mounted on the divider plate or the furnace firewall

Key Benefits for Technicians Ensures stable voltage output with 1% temperature stability to prevent controller reboots or communication errors

this OEM component delivers the repeatability and field durability required by contractors

Belimo B349 Valve Els PW 17895 Whether you are servicing aThe Belimo B349 is a high performance 2 inch NPT 3 way ball valve designed for precise mixing or diverting in commercial HVAC and hydronic systems. This 46 Cv valve features an A port equal percentage flow characteristic and a B port modified for constant common port flow, ensuring stable control and preventing pressure surges during modulation. Engineered with a nickel plated forged brass body and stainless steel ball and stem, the B349 provides