Switch must be in- stalled at factory. Explosion-proof Housing Cast iron base with aluminum cover. Switch must be installed at factory. Specify suffix EXPL after model number. 60 Hz A.C. Derate to 10 amps for operation at high cycle rates.
Aluminum die casting.
Steel fittings zinc plated, dichromate dipped for 200 hour salt spray test. W.C. Approximate Dead Band At Min. Set Point At Max. Motion of the diaphragm shall be restrained by a calibrated spring that can be adjusted to set the exact pressure differential at which the electrical switch will be actuated. Motion of the diaphragm shall be transmitted to the switch button by means of a direct mechanical linkage.