United Electric Controls H122 Series; NEMA 4X, 7 & 9 Pressure Switch; Class I Divisions 1& 2 Groups B, C and D; Class II Divisions 1 & 2 Groups E, F and G; Class III; Two SPDT Output; Epoxy Coated Enclosure; External Adjustment with Reference Dial
Part Number	Description
H122-126	1/4"NPT Nickel Plated Brass Pressure Connection; Brass Bellows; 30"Hg Vacuum to 0 Adjustable Setpoint Range; 0.2 to 0.9"Hg Fixed Deadband; 5 psi Proof Pressure	[On Sale]
H122-450	1/4"NPT Aluminum Pressure Connection; Buna-N Diaphragm; 30"Hg Vacuum to 0 Adjustable Setpoint Range; 0.1 to 0.4"Hg Fixed Deadband; 225 psi Proof Pressure	[On Sale]
H122-S126B	1/2"NPT 316SS Pressure Connection; Welded 316SS Bellows; 30"Hg Vacuum to 0 Adjustable Setpoint Range; 0.2 to 0.9"Hg Fixed Deadband; 5 psi Proof Pressure	[On Sale]

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