Zoro Select XHD 150 Stainless Steel Coupling 1 1/2 in tubing

Zoro Select XHD 150 Stainless Coupling

This stainless steel coupling joins two sections of 1 1/2 inch tubing with female ends on both sides. It is built for plumbing systems that require corrosion-resistant connections in automotive or industrial settings. The extra heavy duty construction suits installations where standard fittings may not hold up. Buyers needing a different tubing diameter or a threaded male connection will need a different fitting.

Extra Heavy Duty 305 Grade Upgrade

The XHD 150 designation marks a step up from lighter couplings by using a 305 stainless steel alloy for added strength. This upgrade is worth it when the joint faces vibration, thermal cycling or exposure to harsh fluids that would degrade lesser alloys. The coupling carries no pressure rating, so it cannot replace a certified high-pressure component. Systems requiring a documented pressure class must use a rated alternative.

Sustained Corrosion Resistance Under Load

Under continuous service the 305 stainless material resists pitting and scaling better than standard grades, maintaining seal integrity over time. The female-to-female design distributes mechanical stress evenly across both tube ends during thermal expansion. Without a stated maximum operating pressure the fitting should not be assumed safe for pressurised lines. Installers should verify compatibility with the specific fluid and temperature range before committing to permanent assembly.