Spring-loaded, locking, made of PP with 316 SS springs and EPR seals. When pulled apart, both sides seal quickly and automatically, making couplings excellent for handling air-sensitive liquids. Available for flexible tubing or rigid PE and nylon tubing using a ferruleless nut. Max. pressure: 90 psi at 70°F. Working temp.: 32 to 230°F (air/water). Use same bore size for coupling insert and body.