Parker B521BCNXXC Double Solenoid Valve 1/4 Inch Port

Product Description

The PARKER B521BCNXXC is a double solenoid, 2-position directional control valve designed for pneumatic and fluid control applications. In its unactuated state, flow passes normally open through ports 1 and 2. The valve body is constructed from aluminum and uses a Buna-N seal for compatibility with a broad range of media. It is rated for a maximum working pressure of 145 psi and a minimum of 20 psi, with a maximum operating temperature of 120 degrees F. This is a valveless-coil design, meaning solenoid coils are not included and must be sourced separately. HVAC technicians, automation contractors, and industrial service professionals are the typical installers.

This valve is suited for residential and light commercial applications where a 2-position directional control is needed in pneumatic systems, HVAC controls, or fluid handling circuits. The 1/4 inch port size makes it appropriate for compact plumbing arrangements common in zone control and process automation setups. The normally open configuration through ports 1 and 2 is useful in fail-safe designs where flow must continue if power is lost.

Key Features

• Double solenoid, 2-position valveless-coil design — coils ordered separately
• Normally open through ports 1 and 2 in unactuated state
• 1/4 inch port size for compact plumbing installations
• Aluminum body for lightweight, corrosion-resistant construction
• Buna-N seal for compatibility with a wide range of fluids and gases
• Operating pressure range: 20 to 145 psi

Compatibility

Designed as an OEM-style directional control valve for pneumatic and fluid control systems requiring a 2-position double solenoid configuration with a 1/4 inch port.

Installation Notes

Installation should be performed by a qualified technician familiar with pneumatic or fluid control systems. Depressurize the system and shut off all power before servicing or replacing the valve. Solenoid coils are not included and must be matched and installed separately before the valve will actuate. Verify port connections and flow direction against system schematics before applying pressure.