PVL's new PSK pressure switch provides simple adjustment of system
pressures in the filed, with two models covering ranges of 10-100bar and
100-360bar. The unit comprises a large adjusting knob with easy-to-read
graduated pressure scale and fixed hysteresis. Once the correct pressure
has been established, the device can be locked off using a set-point
fastening screw. Switch contacts are rated at 3A (220V ac) or 5A (125V
ac), and diaphragm or piston actuation is available according to pressure
range. The piston version will tolerate over-pressure conditions of up to
600bar.