Level Switches
Float and displacer operated magnetic level switches for alarm and pump control: external cage, side-mount and top-mount, without springs or mercury.
Also known as: level switch, float switch, displacer switch, magnetic level switch, reed switch, high level alarm, low level alarm, pump control.
Your request
Add this to your request. We come back with a quotation or the right part.
We will ask for: Switch points / function, Specific gravity, Design pressure, Design temperature, Medium, Tag number.
Brands
Jerguson (Clark-Reliance) has built liquid level instruments since 1905: reflex and transparent glass gages with safety ballcheck gage valves, Magnicator magnetic level indicators, level switches and transmitters. Established in the chemical, petrochemical and power industries.
Reliance Boiler Trim (Clark-Reliance) has built boiler level controls since 1884 and brought conductivity probes to the boiler industry in 1959: Simpliport bi-color gages, Eye-Hye SmartLevel remote level indication, prismatic and flat glass water gages, water columns, gage valves and Levalarm and TWIP level switches.
Models
Tri-Magnet level switches3
Boiler level switches2
No models match these filters. That does not mean we cannot supply it:
Send us your requirement →Not seeing the size, connection or rating you need? Most of these models are built to order and our suppliers' engineers adapt them. Send us what you have and we work it out. Send us your requirement →
Level switches give a contact at a set liquid level for alarms, shutdowns and pump control. Ritec supplies the Jerguson range: external cage switches operated by float or displacer, side-mount JMRS reed switches and JMLS magnetic switches, top-mount displacer and float switches, and the SureTest option for testing the switch in place. For boilers and steam plants we add Reliance Levalarm low water cut-outs and alarms and TWIP turbine water induction protection.
Tell us the switch function and points, the medium and its specific gravity, design pressure and temperature, the process connection, and the contact rating and area classification, and we return a selection.
Frequently asked questions
- How does the Jerguson Tri-Magnet switch work?
- A magnet on the float or displacer rod turns a secondary magnet, which repels a third switch magnet to the opposite side and operates the contacts. Snap action comes from magnetic repulsion, without springs; the mechanism was endurance tested to over 850,000 cycles.
- Which switch mechanism do I need?
- General purpose 10 A mechanisms up to 480 °F (249 °C), high temperature 5 A to 750 °F (399 °C), hermetically sealed 5 A for contaminated atmospheres and intrinsically safe circuits, gold-plated 0.25 A for low power circuits, and encapsulated 5 A to 850 °F (454 °C).
- Float or displacer?
- Float switches sit in an external cage or mount horizontally in the vessel wall. Displacer switches hang a displacer from a spring and suit top mounting and multi-point alarm or pump control.