Parker DC602-4 Drain Cock Shutoff Valve Nptf Brass

Product Description

The PARKER DC602-4 is a brass internal seal drain cock shutoff valve designed for use in fluid and pneumatic systems requiring a reliable manual drain or shutoff point. Featuring a 1/4-18 NPTF threaded connection, it maintains a pressure-tight seal without the need for a separate fitting. Rated to 150 psi maximum working pressure, this valve is suited for draining accumulated fluid from compressed air lines, plumbing systems, and low-pressure pneumatic circuits. At approximately 0.05 pounds, it is a lightweight, compact component that installs quickly in tight spaces. Plumbers and pipefitters working in light commercial and residential applications commonly specify this type of drain cock for system service points.

This drain cock is applicable in compressed air distribution systems, water supply lines, and small pneumatic control circuits where a manual drain or isolation point is needed. It performs well in environments where temperatures stay at or above 32 degrees F. Typical installations include drain points at air compressor tanks, low points in pneumatic lines, and service tees in plumbing rough-in work. The compact 1/4-18 NPTF thread size makes it a standard choice for small-bore piping runs and control panels requiring periodic manual blowdown.

Key Features

• 1/4-18 NPTF thread provides a dry-seal connection without a separate fitting
• 150 psi maximum working pressure rating for compressed air and fluid service
• Brass body construction offers corrosion resistance in water and air applications
• Internal seal design reduces the risk of external leakage at the valve stem
• Minimum operating temperature of 32 degrees F suits standard indoor service environments
• Compact, lightweight form factor for installation in tight panel or piping spaces

Compatibility

Designed as a standard OEM-style replacement or new-installation drain cock for small-bore NPTF-threaded plumbing and pneumatic systems requiring a 1/4-18 connection point.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter following applicable IPC and local plumbing code requirements. Depressurize and drain the system completely before removing or installing any drain cock valve. Use appropriate thread sealant rated for NPTF connections and the media being carried. Do not exceed the 150 psi maximum working pressure rating or operate below the minimum temperature rating of 32 degrees F.