Resideo L4008E1040 Controller 320734-701 Tampering with the seal or

Tampering with the seal or adjusting the spring tension is not recommended and should only be performed by authorized repair centers

Key Benefits: High-Temperature Durability: Engineered with Viton rubber for superior resistance to heat and chemical degradation in HVAC applications

Does this part include the bearing

What causes a collector pan to fail prematurely

poppet-style appliance gas regulator engineered specifically for low-capacity burner and pilot line applications

Resideo L4008E1040 Controller 320734-701 Tampering with the seal orThe Resideo L4008E1040 is a heavy duty High Limit Aquastat Controller engineered for precise temperature regulation in hydronic heating systems, storage tanks, and industrial boiler applications. This immersion type controller features a Single Pole Single Throw (SPST) micro switch designed to break the circuit on temperature rise, providing critical over temperature protection. With an operating range of 130 270F and a factory set stop at 250F, it