A stainless steel plunger moves vertically when the pig makes
contact;
when the pig passes, the plunger returns to normal position
ready for next contact.
Choice B
A stainless steel hinged rod is deflected by the pig and
folds into a special recess until the pig passes and the rod
returns to the ready position.
Both models
actuate the micro-switch to indicate arrival and/or passage
of the pig/shut down the station till the pig has passed/resumed
pumping. Available for any size line. Available
with visual indicator as to direction and passage of the pig
-- with manual reset button option.
contact;
when the pig passes, the plunger returns to normal position
ready for next contact.