How to Set Up a 17 Series Air-Cooled Torch with 25 Dinse

By MIG/TIG/Stick Welders & Plasma Cutters | USA Weld – HTP ... | Published: 2026-10-28

Category: How-to Guides

Learn how to safely set up your 17 Series 150A air-cooled TIG torch, including connecting the 25 Dinse power adapter and 9mm quick-disconnect gas fitting.

Quick Answer

Setting up the 17 Series 150A air-cooled TIG torch requires connecting the 25 Dinse power adapter to your welder's output and attaching the 9mm quick-disconnect gas fitting to your gas line, with proper cable routing to maintain flex.

Why Setup Order Matters

Connecting the gas line before the power cable can cause kinking in the torch cable's flexible silicon hose. Always attach the Dinse connector first so you can route the cable in a loose arc without tension.

Common Fitment Issue

The 25 Dinse adapter requires a 3/8" OD power receptacle on your welder. If your machine uses a different size, you will need an adapter – check your welder's manual before installing.

Step-by-Step Setup Instructions

1. Prepare Your Welder and Workspace: Turn off the welder and disconnect it from power. Clear the work area of clutter. Have the torch, 25 Dinse adapter, and 9mm gas fitting ready. Never connect or disconnect a Dinse connector while the welder is on; arcing can damage both the plug and the receptacle.
2. Attach the 25 Dinse Power Adapter: Insert the 25 Dinse (3/8" OD) connector into your welder's positive output receptacle. Twist it clockwise until it locks. Pull gently to confirm it is seated. If the connector wobbles or does not lock, it is not fully inserted. Re-align the slot and push firmly before twisting.
3. Connect the 9mm Quick-Disconnect Gas Fitting: Push the gas fitting into the mating quick-disconnect on your gas hose until it clicks. Tug lightly to confirm it is locked. Use a gas hose with a matching 9mm quick-disconnect coupler. Mismatched fittings will leak and cause porosity in the weld.
4. Route the Torch Cable: Arrange the torch cable in a smooth, gentle arc from the welder to your work area. Avoid sharp bends, kinks, or placing heavy objects on the cable. The silicon rubber cable is flexible but can be damaged if pinched under a welding table or tool box.
5. Perform a Final Check and Test Flow: Turn on the welder and gas supply. Set your regulator to 15-20 CFH for TIG. Momentarily open the torch valve or press the gas test button to confirm gas flows from the collet body. If no gas flows, verify the quick-disconnect is fully clicked and the gas valve on your regulator is open.

Recommended Torch for This Setup

17 Series (150A) Air-Cooled Torch w/25 Dinse & 9mm Quick Disconnect Gas Fitting: 17 Series 150A air-cooled TIG torch with a one-piece cable made of flexible silicon rubber with a nylon braided overlay. The super-flex cable reduces arm fatigue during long welding sessions and makes it easier to route the torch around your workpiece.
17 Series (150A) Air-Cooled Torch w/25 Dinse & 9mm Quick Disconnect Gas Fitting