The Cap & Chain Thread Protector Set provides reliable protection for your oxy-fuel regulator and hose connections when not in use. Designed for B-size fittings (9/16″-18), these heavy-duty brass thread protectors prevent contamination, dust, dirt, and moisture from entering gas lines — helping to extend equipment life and maintain safe, leak-free performance.

Each protector includes a secure chain to keep the cap attached and prevent loss during operation. The oxygen cap (#927) features a right-hand thread (CGA-022), while the fuel gas cap (#928) features a left-hand thread (CGA-023), ensuring safe, non-interchangeable use. Both are precision-machined from solid brass for long-lasting durability in industrial environments.

Key Features

• Protects regulator and hose fittings from dust, dirt, and damage
• Gas-tight seal ensures safety and prevents contamination
• Durable solid brass construction for long service life
• Attached safety chain prevents loss when disconnected
• Color-coded thread direction for quick gas identification
• B-size (9/16″-18) fitting for standard oxy-fuel equipment
• Right-hand thread (oxygen) and left-hand thread (fuel gas) prevent mix-ups

Technical Specifications

• Brand: Universal Industrial Type
• Part Numbers:
  • Oxygen: #927 – RH (CGA-022)
  • Fuel Gas: #928 – LH (CGA-023)
• Material: Brass
• Size: B-Size (9/16″-18)
• Connection Type:
  • Oxygen: Female RH Nut & Plug
  • Fuel Gas: Female LH Nut & Plug
• Includes: Attached chain for each cap
• Gas Service: Oxygen and Acetylene / Fuel Gas
• Field: Industrial Welding & Fabrication