QRW Single Shut-Off TIG Water Quick-Disconnect Coupler (Large Pin)

Quickly disconnect your water-cooled TIG torch while helping keep coolant contained.
The QRW Single Shut-Off Water Quick-Disconnect Coupler provides a fast and reliable connection between your water-cooled TIG torch and your welding machine or water cooler. Its internal shut-off valve automatically closes when the hose is disconnected, helping reduce coolant loss during torch changes and maintenance.

Designed for professional TIG welding applications, this Large Pin quick-disconnect system simplifies torch installation while reducing downtime and cleanup.

Why Welders Choose the QRW Water Coupler

• Single Shut-Off Valve: Automatically stops coolant flow when disconnected.
• Faster Torch Changes: Disconnect water lines in seconds without tools.
• Reduce Coolant Loss: Helps minimize coolant draining during maintenance.
• Professional Connection: Durable quick-disconnect design for daily use.
• Easy Installation: Installs directly between the welding machine, water cooler, and torch hoses.

What's Included

• ZHCK-W (QDWAP) Threaded Female Water Hose Adapter to Male Water Hose Plug (Large Pin)
• 5/8"-18 Left-Hand "B" Size Male Nut to Female Quick-Release Water Hose Coupler

Installation

Install the female quick-disconnect coupler on the welding machine or water cooler hose. Install the matching male water plug on the TIG torch hose to create a quick-disconnect coolant connection.

Two couplers are required for each water-cooled TIG torch:

• One coolant supply line
• One coolant return line

Compatibility

• Water-cooled TIG welding systems
• TIG torch coolant hoses
• Compatible with matching Large Pin water quick-disconnect plugs

Ideal Applications

• Water-cooled TIG torches
• Torch replacement and maintenance
• Custom TIG hose assemblies
• Production TIG welding
• Fabrication shops
• Maintenance departments

Frequently Asked Questions

How many water couplers do I need?
A complete water-cooled TIG torch requires two water quick-disconnect couplers—one for the coolant supply hose and one for the coolant return hose.

What does Single Shut-Off mean?
The internal valve inside the female coupler automatically closes when the connection is disconnected, helping reduce coolant loss from the machine or water cooler side.

What is the pin size?
This coupler uses a Large Pin with a 0.355" diameter.

Does this include the matching water plug?
Yes. The kit includes both the female water quick-disconnect coupler and the matching male Large Pin water hose plug.

Can this be used for shielding gas?
No. This product is designed specifically for water-cooled TIG torch coolant lines.

Can I use this with other quick-disconnect brands?
For best performance, use this coupler with compatible Large Pin water quick-disconnect components designed for the same connection profile.