SOLENOID VALVE NC 1/4 121K6423 OILON Fuel Cutoff Valve

The SOLENOID VALVE NC 1/4 121K6423 OILON (Parker Model: 121K6423) is a heavy-duty, 2/2-way normally closed (NC) direct-acting fuel solenoid valve engineered by Parker Lucifer and integrated into Oilon oil, gas, and dual-fuel burner systems. Designed for precise automatic fluid control, the SOLENOID VALVE NC 1/4 121K6423 OILON acts as a safety fuel shut-off valve, instantly opening when energized and springing closed upon de-energization to prevent unburned fuel from entering the furnace chamber.

Constructed with a forged brass body, stainless steel internal plunger mechanism, and high-grade FKM/Viton sealing elements, the SOLENOID VALVE NC 1/4 121K6423 OILON handles light oil, heavy fuel oil (HFO), diesel, and natural gas lines under high thermal and operating pressures. Female 1/4″ BSPP threaded ports allow straightforward inline mounting into Oilon fuel pumps, pre-heaters, and burner nozzle lines.

Key Features of the SOLENOID VALVE NC 1/4 121K6423 OILON

• 2/2-Way Normally Closed (NC) Safety Operation: Automatically shuts off fuel flow immediately upon power interruption or flame failure trip.

• 1/4″ Threaded BSPP Ports: Standardized female process connections ensure a tight, leak-free seal in burner fuel supply manifolds.

• FKM/Viton High-Temperature Seals: Synthetic seals resist chemical degradation, fuel additives, and elevated oil pre-heater temperatures.

• Direct-Acting Solenoid Mechanism: Delivers fast opening and closing response times regardless of minimum system operating pressure.

• Forged Brass Body Construction: Rugged valve housing provides high pressure containment and mechanical strength against pipe strain.

• Compatible with Parker Coils: Fits standard Parker 230V AC or 24V DC DIN plug solenoid coils for quick field maintenance.

Primary Applications

• Oilon Industrial Burners: Fuel oil safety shut-off and nozzle line control on Oilon light oil, heavy oil, and gas burners

• Commercial Boiler & Heating Skids: Automatic fuel line isolation on steam boilers, hot water generators, and thermal fluid skids

• Marine Auxiliary Boilers: High-reliability fuel cutoff control for shipboard auxiliary oil-fired boilers and sludge incinerators

Technical Specifications

Package Contents

• 1 × SOLENOID VALVE NC 1/4 121K6423 OILON Brass Valve Body Assembly

• Installation Leaflet & Mounting Seal