Our polymer-based universal connectors and PEEK union connectors only need to be hand-tightened, whereas any of the stainless steel fittings need to be wrench-tighten.

The EXP fittings can be USED either way: They are hand-tightened for use up to 8,700 PSI or wrench-tightened for use up to 20,000 psi. Note that over-tightening causes GALLING and will destroy the threads. Fittings that need to be wrench-tightened generally require ¼-turn past hand tight to ACHIEVE a leak-tight seal. UNFORTUNATELY, there is no universal torque setting.

Our polymer-based universal connectors and PEEK union connectors only need to be hand-tightened, whereas any of the stainless steel fittings need to be wrench-tighten.

The EXP fittings can be used either way: They are hand-tightened for use up to 8,700 psi or wrench-tightened for use up to 20,000 psi. Note that over-tightening causes galling and will destroy the threads. Fittings that need to be wrench-tightened generally require ¼-turn past hand tight to achieve a leak-tight seal. Unfortunately, there is no universal torque setting.