Parker DC602-2 Drain Cock Shutoff Valve 1/8 Inch Nptf

Product Description

The PARKER DC602-2 is a brass drain cock shutoff valve designed for low-volume drain and bleed applications in fluid and pneumatic systems. It features an internal seal design with a 1/8-27 NPTF thread connection and a wing-style handle for tool-free operation. Rated to 150 psi maximum working pressure, this valve is suited for use in compressed air, light hydraulic, and water service lines. Its compact form factor and standard NPT thread make it straightforward to install in tight spaces. Licensed plumbing and pipefitting professionals commonly specify this type of valve for drain points on pressure systems, air receivers, and small piping assemblies.

This valve is a fit for residential and light commercial plumbing, HVAC condensate and pressure systems, pneumatic tool lines, and similar applications where a reliable, manually operated drain point is needed. The 1/8-27 NPTF thread seats without a separate sealant in many applications, though thread sealant or tape is commonly used per job requirements. Its rated minimum working temperature of -65 degrees F extends its suitability to cold-climate or refrigeration-adjacent installations.

Key Features

• 1/8-27 NPTF internal-seal thread connection — no separate seal insert required
• 150 psi maximum working pressure for compressed air, water, and light fluid service
• Brass body construction for corrosion resistance in wet and humid environments
• Wing handle allows tool-free manual operation in confined spaces
• Rated to -65 degrees F minimum working temperature for cold-service applications

Compatibility

Designed as an OEM-style replacement or new-installation drain cock for systems with 1/8-27 NPTF threaded drain ports in plumbing, HVAC, and pneumatic piping applications.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified HVAC technician in accordance with applicable local codes and IPC or IFGC requirements. Depressurize and isolate the system completely before removing or installing any drain valve. Apply thread sealant tape or compound to the male threads per standard practice unless the connection is a dry-seal NPTF joint confirmed to achieve full engagement. Do not overtighten brass fittings, as the body material is susceptible to thread damage under excessive torque.