Diaphragm pressure switch F M
bellowsBourdon tuberelative

diaphragm pressure switch
diaphragm pressure switch
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diaphragm, bellows, Bourdon tube
Pressure type
Contact type
stainless steel, brass
for marine applications
Other characteristics
Pressure range

Max.: 600 bar (8,702.26 psi)

Min.: -1 bar (-14.5 psi)

Process temperature

Max.: 120 °C (248 °F)

Min.: -50 °C (-58 °F)


Case: zamak epoxy coated Range: » NDT*: from 0 to 80 bar (différential pressure) Sensing element: » Stainless steel bellows » NBR, FKM or EPDM diaphragm » Stainless steel bourdon tube Pressure connector: M20x150 or ½’’GM Switch: 1 or 2 change over (SPDT) / fix or adjustable deadband Cable gland: nickel plated brass M16 or JUPITER connector Features: » Stainless steel fastening » Reinforced fixing bracket - Navy type * NDT : Field of non-deterioration Pressure variation (or temperature transformed into pressure in accordance with the saturated pressure law [steam pressure]) is transmitted to sensor "S" which activates an internal mechanism comprising a force-balancing system. The force produced by pressure variation in sensor "S" is balanced by the variation spring. The force applied can be adjusted via a "RS" screw which can be used to set a given operating (or balancing) point. In the event that the balancing point is exceeded the governor arm will move. Any movements will be detected by contact "C" fitted the end of the stroke. Pressure variation that requires the contact to be reset in its initial position is referred to as the “deviation”. The deviation value can be increased by adjusting the variation spring using the wheel labelled"W". Contact trip can only be adjusted upwards. Device services electrical function 34D in the present technical instruction leaflet.


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*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.