Haskel’s air pilot switch is a pressure switch producing a pneumatic signal up to 150 psi at any sensing pressure within their adjustment range.  2-position poppet type air signal valve shifts from its normal position by a rod from the sensing end which first must overcome an adjustable force spring or air regulated dome loader. The signal valve may be piped normally open, normally closed (no flow), 3-way or 2-way depending on model.

Remote Air Adjusted “Remoteset” Air Pilot Switch

Sensing pressures to 60,000 psi; Air valve 3-way normally closed (no flow), 2-way normally closed (no flow), normally open (flow)

Externally Adjusted Air Pilot Switch

Sensing pressures to 25,000 psi; Air valve 3-way, 2-way normally open (flow) or closed (no flow).

Internally Adjusted Air Pilot Switch

Sensing pressures to 60,000 psi;  Air valve 3-way normally closed (no flow), 2-way normally closed (no flow), normally open (flow).

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