CMU School of Drama


Wednesday, April 22, 2020

Back to the Basics: Push-Lock Fittings

Hydraulics & Pneumatics: Push-lock hose fittings (aka push-lok, push-on, insta-grip and field attachable fittings) lets technicians attach connectors and fittings to hoses in the field for low-pressure hydraulic and pneumatic systems such as shop air, general industrial, maintenance and automotive assembly, to name a few. The assemblies handle pressures up to 350 psi, a limit set by the hose’s capabilities. This limitation also means most hydraulic systems cannot use them.

1 comment:

Elliot Queale said...

This is a topic that is sort of relevant to our pneumatic tool world, and is important to understand when one needs to replace an airhose. For example, the orange hose in the shop near the stairwell is a problem child, and I had to cut about 6" off it earlier this year and, in the process, replaced the push lock fitting. Granted, the stakes are lower in our world, however that isn't to say without proper precautions and execution nobody would get hurt. We still deal with high pressures, so installing these fittings is important to get right the first time. I particularly like the section where they talk about the other ways people have installed these connectors, like using a liquid to slide it on easier or heating the tubing up to expand it. These clearly alter the system and, unless you're using the approved solvent for lubrication, could be detrimental to the system. It continues to show us how careful we need to be when doing maintenance on our system.