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Diaphragm vacuum switch 181P
vacuumO-ringthreaded

diaphragm vacuum switch
diaphragm vacuum switch
diaphragm vacuum switch
diaphragm vacuum switch
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Characteristics

Technology
diaphragm
Pressure type
vacuum
Mounting
threaded, O-ring
Process connection
NPT 1/2, NPT 1/4
Material
stainless steel
Protection level
SIL, NEMA 4X, NEMA 13
Other characteristics
adjustable, compact
Pressure range

Max.: 150 psi

Min.: 0 psi

Burst pressure

250 psi

Process temperature

Max.: 149 °C
(300 °F)

Min.: -40 °C
(-40 °F)

Description

Compact, adjustable vacuum switch well suited to numerous applications. Our efficient Nega-Rate® Belleville disc spring offers superior set point stability and vibration resistance. The 181P series vacuum switch also has a selectable deadband feature which can be preset at the factory. Specifications Electrical Listings: Switch listed by Underwriters Laboratories, Inc., CSA International and FM Approval Adjustment: Internal, slotted adjustment wheel Shipping Weight: Approximately 13 ounces * Temperature limits change with O-Ring selection
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.