... gas (available on special order),refrigeration, instrumentation and hydraulic systems. BST fittings generally connect a hose assembly to ... to connect and air hose fittings9.Skive type fittings10. Hydraulic hose permanent and reusable fittings11.Brass tubing connectors/fittings ... ,also iron alloy,aluminum,etc.,12.Pneumatic/ Hydraulic brass parts/fittings13.Brake valve14.Nylon tube(assembly)15 ...