3-1/8 Inch 11 TPI Oxygen Cylinder Valve Safety Cap

Heavy-Duty Steel Cylinder Cap 3-1/8"-11

The 318-11 Cylinder Cap is a critical safety accessory for industrial gas cylinders, specifically designed for oxygen and other high-pressure vessels requiring a 3-1/8" - 11 TPI thread. Manufactured to meet rigorous industrial standards, this cap serves the primary function of shielding the cylinder valve from physical damage during handling, storage, and transportation. In the welding and MRO industry, valve protection is not just a best practice; it is a regulatory necessity mandated by safety organizations including OSHA and the DOT.

This cap is engineered from durable steel, offering superior impact resistance compared to plastic alternatives. The 3-1/8" diameter with 11 threads per inch is the industry standard for many high-pressure cylinders (often referred to as K, T, or S style cylinders). The cap screws securely onto the neck ring of the cylinder, completely enclosing the valve assembly. This prevents the valve from being struck, bent, or sheared off in the event of a fall, thereby preventing catastrophic gas release.

Technical Specifications and Compliance

Designed for longevity, the cap features a finish that resists corrosion and wear. The threading is precision-cut to ensure compatibility with standard cylinder neck rings, allowing for efficient capping and uncapping without cross-threading. This product is an essential replacement for lost or damaged caps in any welding shop, gas distribution center, or mobile fabrication unit. Ensure your equipment remains compliant and your personnel remain safe by maintaining a stock of these essential safety caps.