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
H122-144	1/4"NPT Nickel Plated Brass Pressure Connection; Brass Bellows; 0 to 20 psi Adjustable Setpoint Range; 0.1 to 0.5 psi Fixed Deadband; 25 psi Proof Pressure	[On Sale]
H122-146	1/4"NPT Nickel Plated Brass Pressure Connection; Brass Bellows; 0 to 30 psi Adjustable Setpoint Range; 0.1 to 0.6 psi Fixed Deadband; 40 psi Proof Pressure	[On Sale]
H122-453	1/4"NPT Aluminum Pressure Connection; Buna-N Diaphragm; 0 to 20 psi Adjustable Setpoint Range; 0.05 tp 0.2 psi Fixed Deadband; 225 psi Proof Pressure	[On Sale]
H122-454	1/4"NPT Aluminum Pressure Connection; Buna-N Diaphragm; 0 to 30 psi Adjustable Setpoint Range; 0.05 tp 0.3 psi Fixed Deadband; 225 psi Proof Pressure	[On Sale]
H122-S144B	1/2"NPT 316SS Pressure Connection; Welded 316SS Bellows; 0 to 20 psi Adjustable Setpoint Range; 0.1 to 0.5 psi Fixed Deadband; 25 psi Proof Pressure	[On Sale]
H122-S146B	1/2"NPT 316SS Pressure Connection; Welded 316SS Bellows; 0 to 30 psi Adjustable Setpoint Range; 0.1 to 0.6 psi Fixed Deadband; 40 psi Proof Pressure	[On Sale]
H122-553	1/4"NPT 316SS Pressure Connection; Teflon Diaphragm; 0 to 20 psi Adjustable Setpoint Range; 0.05 to 0.3 psi Fixed Deadband; 225 psi Proof Pressure	[On Sale]
H122-554	1/4"NPT 316SS Pressure Connection; Teflon Diaphragm; 0 to 30 psi Adjustable Setpoint Range; 0.1 to 0.4 psi Fixed Deadband; 225 psi Proof Pressure	[On Sale]

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