Our Model 703-U is a heavy-duty, factory set pressure switch used for gaseous or liquid fluid systems. Its piston design makes it well-suited for applications that may experience overpressure conditions. At the same time, the 703-U offers exceptional accuracy and repeatability.

« Pressure Switches / 703-U Series

Features

Factory set fixed pressure
Piston
6-5000psig range

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Specifications

Temperature range from -40 to 180°F
Pressure connection: 1/4″-18 NPT
Electrical at 28 VDC:
- 7 amps resistive
- 4 amps inductive
- 2 1/2 amps lamp load
Single pole double throw
Double pole double throw
1/2”-NPT electrical connection with 5 full threads for conduit engagement
Factory-sealed lead wires—Type UL 1015 AWG #18, 24”
Hydraulic and electric modules AISI 316 Stainless Steel
UL listed for use in hazardous locations:
- Class 1: Division 1, Groups A, B, C, D
- Class 2: Groups E, F, G
NEMA Type 7 rating

Available Options

Snap-action electrical switch tested to 1 million cycles
316L stainless steel construction for excellent corrosion resistance
Exceptional accuracy and repeatability
High overpressure capability

Applications

Off-shore exploration
Petrochemical processing
Industrial OEM equipment
Oil and Gas, Pipelines
Control Panels

Operating Pressure Data
Series	Pressure Range		Dead Band*		Max System Pressure		Proof Pressure
Series	PSIG	BAR	PSIG	BAR	PSIG	BAR	PSIG	BAR
703-U	6 – 50	0.41 – 3.45	2 / 6	0.14 – 0.41	400	27.58	600	41.37
703-U	50 – 200	3.45 – 13.79	8 / 20	0.55 – 1.38	600	41.37	900	62.05
703-U	200 – 750	13.79 – 51.71	25 / 70	1.72 – 4.83	3000	206.84	4500	310.26
703-U	750 – 2500	51.71 – 172.37	80 / 225	5.52 – 15.51	5000	344.74	7500	517.11
703-U	2500 – 5000	172.37 – 344.74	220 / 400	15.17 – 27.58	7500	517.11	10000	689.48