Are the o-rings swelling, shrinking, wearing and causing a general nuisance in pressure situations? If you have to work in pressure ranges from vacuum to 1500+ psi, call Quest Engineering.

We can solve your problem with a pressure switch that has
no o-rings.

Plus...
Because we completely weld the unit, leaks are history, so you can use this switch up to 400ƒ F. and the stainless steel construction makes it possible to solve the tougher system challenges.

Not only that...
If you want to sense temperature, we can do it with a family of switches that can go from -180 ƒ F (now that's cold) to 1000ƒ F (and that's hot)

And...
Quest Engineering carries pressure switches that can do from 30 inches of mercury (Now that's a real vacuum) to 6,000 psi.

Give us your toughest media problems!
Our switches are used in acetones, acids, gas pump lines, plastic molding and steam... and just about anything else.