Parker 72218BN4UN00 Solenoid Valve 1/2 Inch Npt

Product Description

The PARKER 72218BN4UN00 is a normally closed, direct-acting solenoid valve designed for fluid and gas control applications in industrial, commercial, and mechanical systems. The valve features a brass body with an NBR elastomer seal, a 1/2 inch NPT port, and a 5/8 inch orifice. It accepts a wide range of input voltages including 12 volts DC, 24 volts DC, 24/60 volts AC, 120 volts DC, 120/60 to 110/50 volts AC, and 240/60 to 220/50 volts AC, making it adaptable to many control circuit configurations. Maximum working pressure is 40 psi. A coil is included, though the valve requires an integrated coil for complete assembly. Licensed plumbers, pipefitters, and HVAC technicians are the typical installers.

This solenoid valve is suited for use in residential and commercial fluid control systems where a normally closed, de-energized shutoff position is required. Typical applications include water, air, and compatible fluid service lines where the 1/2 inch NPT connection integrates with standard pipe configurations. The Cv rating of 4.0 supports adequate flow in moderate-pressure systems operating below 40 psi. The maximum operating temperature is 185 degrees F, supporting use in a range of process and mechanical service environments.

Key Features

• Normally closed (NC) unactuated state — valve shuts off flow when de-energized
• Brass body construction for corrosion resistance in water and compatible fluid service
• NBR seal material rated up to 185 degrees F
• Multi-voltage coil compatibility: 12V DC, 24V DC, 24/60V AC, 120V DC, 120/60 to 110/50V AC, 240/60 to 220/50V AC
• Cv rating of 4.0 for reliable flow performance at moderate pressures
• Zero minimum operating pressure differential — suitable for gravity-feed and low-pressure systems
• CSA Certified, UL Listed, and NEMA 4X rated for wet and washdown environments

Compatibility

Designed as an OEM-style or replacement solenoid valve for systems utilizing a 1/2 inch NPT connection with normally closed operation. No specific model or system family compatibility was stated in the product data.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified HVAC technician in accordance with applicable local codes and the International Plumbing Code where required. Shut off the fluid supply and relieve system pressure completely before removing or installing the valve. Ensure the selected coil voltage matches the control circuit before energizing. The NEMA 4X enclosure rating permits installation in wet locations, but verify that all conduit entries and fittings are properly sealed to maintain the enclosure rating.