Diaphragm Operated Dual-Action Pressure Switch

H2 - Dwyer Instruments Inc. (Dwyer Instruments Inc.)

Explosion-proof, UL & CSA Listed for Class I, Groups B, C & D and Class II, Groups E, F & G. The H2 is designed for sequencing two different actions as pressure of a liquid or gas increases or decreases. The patented design consists of two concentric pistons operated by a single diaphragm with one pressure chamber.