1.high temperature and high pressure 2.Level control, alarm, and fault interlocking VRUQK - 6000/6100 Float Level Switches and UQK – 6200 ... Switches are applicable for level control, alarm, and cascade failure of open vessel, and high temperature, high pressure process conditions ... , as a result, such functions as liquid level control, alarm, and fault interlocking, etc can be realized. 2. VRUQK – ...