the Belimo KH-LF is the crankarm and retaining hardware only

utilizing this OEM Lochinvar boiler part ensures factory-spec fitment and long-term reliability in closed-loop systems

Durable Construction: Nickel-plated brass body prevents corrosion and withstands temperatures up to 250°F and working pressures of 150 psi

check the filter monthly

but larger oil volumes may require additional units

Robertshaw 2374-498 Air Switch the Belimo KH-LF is theFor veteran technicians and contractors requiring a reliable pressure sensing solution, the Robertshaw 2374 498 Air Switch is a high performance, field adjustable air pressure switch designed for residential and light commercial HVAC applications. This SPDT air switch features an adjustable set point range of 1. 0" to 4. 0" WC, making it a versatile 1: 1 replacement for critical components in furnaces, electronic air cleaners, and humidifiers.