Parker Hannifin 100997 S8F 1/2" Pilot Assembly Refrigeration Solenoid Valve Body

The Parker Hannifin 100997 is a 1/2" pilot assembly (valve body) for the S8F series pilot-operated solenoid valve from Parker's Refrigerating Specialties Division. Also referenced as part number S8F13NX00X0XS, this is a bare valve body assembly — sold without an electrical coil — designed for integration into industrial refrigeration and HVACR systems requiring precise, fully open or fully closed flow control.

The S8F operates as a normally closed, pilot-operated solenoid valve. When electrically energized, the valve opens fully; when de-energized, it closes completely to stop flow. The pilot-operated design provides higher flow capacity compared to direct-acting designs, requiring no continuous electrical power to maintain position once actuated.

Key Features:

• 1/2" port size pilot assembly for the Parker S8F solenoid valve series
• Normally closed, pilot-operated design — opens wide when energized, closes fully when de-energized
• Compatible with ammonia (R-717), R-22, R-502, R-134a, R-404A, and other common refrigerants
• Suitable for liquid lines, suction lines, hot gas defrost lines, and refrigerant oil lines
• Can also function as a pilot valve to actuate remote gas-powered valves and pilot-actuated devices
• Maximum operating pressure differential (MOPD): 300 psig (21 bar)
• Maximum rated pressure: 400 psig (28 bar)
• Plunger-needle assembly interchangeable with other Parker Refrigerating Specialties S-series valves
• Manual opening stem for system evacuation or bypass during troubleshooting
• Bare valve body only — coil must be ordered separately to match system voltage (typically 120V or 240V)

The Parker 100997 pilot assembly is a reliable replacement or service part for commercial refrigeration racks, cold storage facilities, and industrial HVACR systems. Cross-reference: S8F13NX00X0XS.