Adapter for 40L Cylinder Faucet | Left-Hand Thread W 21.7 x 1/14″ SX Female to 5/16″ SAE Male

Special reduction fitting with left-hand thread (SX / Left Hand), compliant with safety standards for flammable and mildly flammable gases (classes A2L and A3). Designed to directly connect 40-liter industrial cylinders (e.g., R32, R1234yf, R290, R600a) to charging lines and pressure gauge assemblies with a 5/16″ SAE (1/2″-20 UNF) connection. Entirely made of high-strength forged brass, it ensures maximum leak-tightness and safety during refrigerant transfer.

Strengths

• Safety Compliance: Dedicated left-hand thread to prevent accidental connections to systems or cylinders that are not compatible with flammable gases.

• 5/16″ Direct Connection: Ideal for direct connection to refill hoses for R32/A2L systems.

• High Mechanical Strength: CNC-machined brass body designed to withstand frequent tightening cycles and high operating pressures.

Safety Note: Left-hand threaded (SX) fitting intended exclusively for refrigerant cylinders classified as flammability classes A2L, A2, or A3. Not for use on standard right-hand threaded (DX / Class A1) cylinders.