Pressure Controls
HVAC Pressure Controls, Switches: One safety feature for air-conditioning units with a compressor and condenser is a pressure-controlled switch. This switch is wired into the circuit to protect the system in case the system develops a leak. If a leak develops, it is possible to draw in moisture and air and damage the whole system. If the pressure builds too high, it can cause a rupture of any of the joints or weaker points in the system.
A low-voltage (24-V) relay is wired into the 240-V line that supplies the compressor motor. The relay contacts are wired into the supply line for the motor . The solenoid of the relay is wired in series with two pressure-operated switches. If the pressure builds too high, the high switch will open and cause the solenoid to de-energize. If this happens, it causes the contacts of the relay to open. This removes power from the compressor motor. If the low-pressure switch opens, it will do the same thing. This way the compressor is protected from both high- and low-pressure causing damage to the system.
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Flow Switches (3)
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High Pressure Controls (3)
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Pressure Controls
SWT03250 Mini Pressure Switch
Trane SWT03250 Mini Pressure Switch (HP)
A pressure switch is a form of switch that operates an electrical contact when a certain set fluid pressure has been reached on its input. The switch may be designed to make contact either on pressure rise or on pressure fall. Pressure switches are widely used in industry to automatically supervise and control systems that use pressurized fluids.
(0 reviews)$220.00 Add to cart -
Pressure Controls
CNT0312E Pressure Switch HP
Trane CNT0312E Pressure Switch HP (060602866)
A pressure switch is a form of switch that operates an electrical contact when a certain set fluid pressure has been reached on its input. The switch may be designed to make contact either on pressure rise or on pressure fall. Pressure switches are widely used in industry to automatically supervise and control systems that use pressurized fluids.
(0 reviews)$380.00 Add to cart -
Pressure Controls
SWT03335 Flow Sensor
Trane Thermal Flow Sensor, Switch SWT03335
A thermal flow switch, also known as a thermal dispersion flow switch, is a precise flow sensing device. The principle sensing method is that of heat diffusion.
(0 reviews)$438.00 Add to cart -
Pressure Controls
CNT0132E Flow Switch
Trane CNT0132E Flow Switch 20.0 Bar
The F61 Liquid Flow Switches can be used in liquid lines carrying water, sea water, swimming pool water, ethylene glycol or other liquids not harmful to the specified materials.
(0 reviews)$380.00 Add to cart -
Pressure Controls
FS80-C Flow Switch
Johnson Controls FS80-C Water Flow Switch
FS80-C Flow Switch responds to fluid flow in lines carrying water, ethylene glycol, or other Non-hazardous fluids. And uses a variety of paddle sizes to respond to fluid flow rates in applications with pipe sizes greater than 1-inch trade size.
(0 reviews)$188.00 Add to cart -
Pressure Controls
CNT0306E HP Pressure Switch
Trane Chiller ACB-2UC121 Type Danfoss High Pressure Controls Switch, Manuel Reset
(0 reviews)$230.00 Add to cart