Parker 393P-6-6 Compression Tube Shutoff Valve 3/8 in

Product Description

The PARKER 393P-6-6 is a through type shutoff valve designed for compression tube connections with a plug-in stem end. Constructed from brass, this valve provides reliable manual shutoff capability in fluid-handling and pneumatic line applications. The fitting accepts 3/8 inch outside diameter tubing on the compression end and transitions to a plug-in stem connection on the opposing side. It is rated for a maximum working pressure of 150 psi and a temperature range of 0 to 150 degrees F, making it suitable for a broad range of service conditions encountered by plumbing, HVAC, and industrial maintenance technicians.

This shutoff valve is commonly installed in residential and light commercial plumbing or fluid distribution systems where a compact, inline shutoff point is needed between tubing runs and instrumentation, appliance, or equipment connections. The tube-to-plug-in stem configuration is frequently used where a quick-connect downstream interface is required, such as in water supply lines, refrigeration sensing lines, or pneumatic control circuits. Licensed plumbers and HVAC technicians are the typical installers for this fitting type.

Key Features

• Through type shutoff design allows inline flow control without rerouting tubing
• Brass construction provides corrosion resistance in water, air, and compatible fluid service
• Accepts 3/8 inch OD compression tubing for a secure, leak-resistant mechanical connection
• Plug-in stem end simplifies connection to compatible downstream fittings or instrumentation ports
• Rated to 150 psi maximum working pressure for standard service applications
• Operable across a temperature range of 0 to 150 degrees F

Compatibility

Designed as an OEM-style replacement or new-installation fitting for systems using 3/8 inch OD compression tubing with a plug-in stem interface, consistent with Parker compression fitting product lines.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician in accordance with applicable IPC or IFGC requirements. Shut off and depressurize the supply line before removing any existing fittings or installing this valve. Use appropriate tube preparation practices including clean, square cuts and proper ferrule seating to ensure a leak-free compression joint. Do not overtighten the compression nut, as brass fittings are susceptible to thread damage under excessive torque.