Parker 72218BN4UE00 Solenoid Valve 1/2 in Normally Closed

Product Description

The PARKER 72218BN4UE00 is a normally closed solenoid valve with a 1/2 inch port, designed for fluid control in hot water systems. In its unactuated state, the valve remains closed and opens only when energized, providing fail-safe shutoff. The brass body offers corrosion resistance in water service applications, while the Ethylene Propylene Diene Monomer (EPDM) seal is well suited for hot water compatibility up to 210 degrees F. With a Cv factor of 4.0 and a 5/8 inch orifice, the valve delivers reliable flow capacity for a range of hydronic and fluid-handling applications. Licensed plumbers and HVAC technicians are the primary installers.

This valve is engineered for hot water service and is commonly installed in residential and light commercial hydronic systems, boiler supply and return piping, water heater circuits, and similar fluid control applications where automatic shutoff or zone isolation is required. The normally closed configuration ensures the line is de-energized and closed by default, making it appropriate for safety-critical or energy-conserving setups. The 1/2 inch port size fits standard half-inch pipe or fitting connections found throughout typical plumbing and hydronic installations.

Key Features

• Normally closed operation — valve closes automatically when de-energized
• 1/2 inch port size for standard plumbing connections
• Brass body construction for corrosion resistance in water service
• EPDM seal rated for hot water compatibility up to 210 degrees F
• Cv factor of 4.0 with 5/8 inch orifice for reliable flow performance
• Zero minimum operating pressure differential — functions at low or no line pressure

Compatibility

Designed as an OEM-style replacement or new-installation solenoid valve for hot water plumbing and hydronic piping systems using 1/2 inch connections.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician in accordance with applicable local plumbing codes and IFGC or IPC guidelines where relevant. Shut off water supply and relieve system pressure completely before removing or installing the valve. Verify that the electrical supply voltage matches the valve coil rating before energizing. Do not overtighten fittings on the brass body; use appropriate thread sealant and follow standard torque practices for brass-bodied valves.