C437D,E Series 2000 Gas Pressure Switches are pressure-actuated devices used in industrial gas systems for safety shutoff. Series 2000 models have snap acting MicroSwitch snap switches to open a circuit on pressure rise or drop. Features:
Use C437 for SPST (non-mercury) switching.
Models intended for lockout applications must be manually reset before resuming operation.
Models with pressure range of 1 to 26 in. wc (0.25 to 6.5 kPa)compensate for momentary surges in gas pressure with a restrictive orifice in inlet pressure channel.
Impede tampering and provide dust-resistant operation with enclosed setting.
Increase strength of control diaphragm with Buna N fiber-reinforced material.
Two Buna-N fiber-reinforced seal-off diaphragms for added reliability.
Clear glass cover allows observation of interior mechanism to aid in setting and checkout.