LF56 series pressure switches are mainly used to control the pressure of steam boiler or water tower regulating the system. When the system pressure exceeds the set point, the switch will cut off the circuit for protection.
With SPDT contact arrangement, LF56 switch can detect the pressure change and shift the internal status accordingly to control the on/off of external circuits, which is available for the pressure control, limit, and alarm of non-hazardous liquid, gas, and steam.
| Model Number | Operating Ranges | Subtractive Differential | Maximum Diaphragm pressure | |||
| kPa | psi | kPa | psi | kPa | psi | |
| LF5615 | 15-100 | 2-15 | 15-40 | 2-6 | 170 | 25 |
| LF5650 | 35-350 | 5-50 | 40-100 | 6-14 | 590 | 85 |
| LF56150 | 70-1035 | 10-150 | 70-150 | 10-22 | 1550 | 225 |
| LF56300 | 140-2070 | 20-300 | 140-345 | 20-50 | 2410 | 350 |
Electrical specification
| Voltage | FL | LR |
| AC | A | A |
| 240 | 5.1 | 30.6 |
| 120 | 8.0 | 48.0 |
Contact resistance: smaller than 25mΩ
Electrical endurance: 50000 cycles
Mechanical specification
| Contact arrangement | SPDT |
| Working media | Standard model for oil, water, air, steam?liquid and other non-corrosive media, chlorine-containing liquids are not available. |
| Ambient temperature | -29°C~66°C |
| Media Temp | -40°C~180°C non-frozen condition |
| Pressure Diaphragm | stainless steel |
| Thermal material | brass |
| Connection | NPT1/4, G1/4, R1/4 |
| The housing has a clear plastic cover that allows you to view the pressure control point | |
Mechanical endurance: 100000 cycles
Material, Outlet hole, Connection thread, Cover screw, Pressure adjusting screw, Differential adjusting screw
The pressure diaphragm of the standard model is stainless steel, the pressure joint is made of brass, and the thread is 1/4-18NPT NPT1/4 G1/4 R1/4
LF55 Pressure Switch for refrigeration system,-0.5~42bar
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TS series temperature controller
