Parker DCR601-4 Drain Cock Shutoff Valve 1/4-18 Nptf

Product Description

The PARKER DCR601-4 is a male pipe drain cock shutoff valve designed for controlled drainage and shutoff in compressed air, hydraulic, and fluid-handling systems. Built from brass with a 1/4-18 NPTF threaded connection, it handles pressures up to 150 psi and operates in temperatures as low as -30 degrees F. The compact form factor and standard thread size make it a reliable choice for plumbers, pipefitters, and HVAC technicians who need a straightforward drain point or manual shutoff in a small-diameter line. The NPTF thread form provides a pressure-tight seal without requiring additional sealant tape in most applications.

This drain cock is suited for residential and light commercial installations where a low-cost, reliable manual drain or shutoff is needed on 1/4-inch pipe lines. Common applications include boiler drain points, compressed air system low points, chiller drain loops, and equipment service ports. Its brass construction resists corrosion in both wet and dry service environments, making it appropriate for plumbing, HVAC, and pneumatic piping systems.

Key Features

• 1/4-18 NPTF male pipe thread for pressure-tight connections
• Brass body construction for corrosion resistance in wet and pneumatic service
• 150 psi maximum working pressure
• Rated for service down to -30 degrees F
• Compact drain cock design for installation in tight spaces

Compatibility

Designed as a standard OEM-style replacement or new-installation drain cock for 1/4-inch NPTF pipe connections in plumbing, HVAC, and compressed air systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter following applicable IPC or local mechanical code requirements. Depressurize and isolate the line fully before removing or installing this valve. Apply thread sealant or PTFE tape as required by the system fluid and local code, noting that NPTF threads are designed to seal on the thread form itself. Do not overtighten, as brass fittings are susceptible to thread damage from excessive torque.