Heavy-Duty Pressure Washer Vacuum Switch - Burner Control (1/4" FPT)

Pressure Washer Vacuum Switch Burner Control Safety Switch (Normally Open) 16 AMP CONTACTS 1/4" FPT CONNECT 140°F MAX APPLICATION & PURPOSE Engineered as a critical safety mechanism for hot water pressure washers, this **Normally Open (NO)** vacuum switch acts as a burner controller. It automatically closes the electrical circuit to ignite the burner only when the pump vacuum begins drawing water. If the pump shuts down, or the water tank runs empty, the vacuum breaks and immediately opens the switch—instantly shutting off the burner to prevent dangerous overheating and coil damage. Electrical Capacity: Equipped with heavy-duty 16 Amp contacts to reliably handle system cycles. Plumbing Port: Standard 1/4" Female Pipe Thread (FPT) fluid connection for universal installation. Safety Rating: Protects heating coils from dry-firing when water supply drops. Temperature Limit: Rated for inlet water temperatures up to 140°F. AVAILABLE CONFIGURATIONS (SELECT VARIANT) Please select the correct vacuum rating variation to match your pressure pump specifications: Part Number Vacuum Threshold (" HG) Application 8.712-391.0 1.5" (HG) Low-threshold vacuum systems 8.712-392.0 2.5" (HG) Standard commercial systems 8.712-393.0 4.5" (HG) High-draw vacuum systems TECHNICAL SPECIFICATIONS Switch Style: Normally Open (NO) Closes on Vacuum Electrical Rating: Heavy-Duty, 16 Amps Inlet Port: 1/4" FPT Connect Max Temperature: 140°F