Parker DC603-2 Brass Drain Cock Shutoff Valve 1/8 in Nptf

Product Description

The PARKER DC603-2 is a brass drain cock shutoff valve designed for manual fluid or air drainage in plumbing, pneumatic, and HVAC systems. It features a 1/8-27 NPTF male pipe thread connection and a wing-style handle for tool-free operation. Rated to 150 psi maximum working pressure, this valve handles demanding service conditions and is rated for temperatures down to -65 degrees F. The brass body provides corrosion resistance suitable for water, air, and light fluid service. Licensed plumbers and HVAC technicians use this valve in drain port applications where a compact, reliable shutoff is required.

This drain cock is a common choice for low-pressure drain ports on boilers, air compressor tanks, water heaters, pneumatic lines, and similar residential and light commercial equipment. Its 1/8-27 NPTF thread size fits standard NPT drain bosses found across a wide range of plumbing and mechanical equipment. The wing handle allows hand-tightening and quick operation without tools, making it practical for routine maintenance drain points.

Key Features

• 1/8-27 NPTF male pipe thread for a pressure-tight, tapered connection
• 150 psi maximum working pressure rating
• Brass body construction for corrosion resistance in water and air service
• Wing handle allows tool-free manual operation
• Rated for temperatures as low as -65 degrees F
• Compact form factor fits standard 1/8 inch drain ports

Compatibility

Designed as an OEM-style replacement or service fitting for standard 1/8-27 NPTF drain port applications in plumbing, HVAC, and pneumatic systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician in accordance with applicable IPC and IFGC guidelines. Shut off and depressurize the system completely before removing or installing any drain valve. Apply thread sealant appropriate for the service fluid to the male threads before installation. Do not overtighten the wing handle or use it as a leverage point when threading the valve into the fitting.