21740 - ESAB Nitrile Check Valve Ball .156 Dia

Restore Your Equipment's Safety and Performance

When it comes to welding safety, your check valves are the first line of defense against dangerous backflow and mixed gases. If you are rebuilding a regulator or servicing a torch and notice the internal check valve isn't sealing correctly, the ESAB 21740 Nitrile Ball is likely the part you need. Over time, the rubber components inside your gas equipment can harden, crack, or deform due to constant pressure changes and exposure to the shop environment. A worn-out check ball means your safety gear isn't doing its job.

This genuine ESAB replacement part is a 0.156-inch diameter ball made from durable Nitrile rubber. It is designed to drop right into your existing equipment and provide a fresh, reliable seal. Unlike generic rubber balls that might be slightly off-size or made from inferior materials that degrade quickly, this OEM part ensures your equipment functions exactly as the manufacturer intended. It’s a small part with a big job—keeping your gas flowing in the right direction and keeping you safe.

Don't let a ten-cent seal compromise a thousand-dollar setup. Whether you are a professional repair technician or a welder maintaining your own gear, using the correct replacement parts is key to longevity and safety. Keep a few of these ESAB 21740 nitrile balls in your repair kit so you are never stuck waiting on parts when you need to get a rig back up and running. Simple maintenance with the right parts keeps your arc on and your shop safe.