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Gas/Air Pressure Switch for HVAC System (LFAS)

The LFAS employs a differential pressure to actuate a precision snap switch at chosen pressure setting. This may be the difference between atmospheric and a negative or positive pressure or between any two given pressures. When a change of pressure occurs between the negative pressure chamber and the positive pressure chamber the main diaphragm activates the snap switch at a pre-determine
Extended Duty Pressure Switch (LF20332)

The LF20332 pressure switch is specifically designed to stand up to extended duty applications. This switch is factory set but capable of field adjustment. It features a Kapton diaphragm for compatibility with a wide variety of fluids, and various terminations including a Metri-Pack connector that forms a tight seal when connected. Among the outstanding design benefits are its durable con
Pressure Switch (LF40-01P)

LF40 switches offer pressure or vacuum sensors. It is provided with a snap action switching for higher current capacity, SPDT contact form and switch deadbands (also referred to as mechanical differential or hysteresis). Miniature size and low cost make the LF40 ideal for OEM applications. LF40 switches utilize high-quality miniature snap-action switches. The switches are diaphragm operat
LF31 HVAC Pressure Switch (LF31)

LF31 switches offer pressure, vacuum and differential models capable of sensing very low setpoints, and switching current up to 5A resistive, 2.5A inductive. Designed for use in the HVAC industry, where reliable air proving is critical to both performance and customer safety, the LF31 is a favorite with leading manufacturers of gas-fired warm air furnaces and water heaters. Smaller and li
Water Pressure Switches for Pumps (LF10-W)

LF10-W pressure switches provide time tested, reliable control for automatic water systems. The switch is universally acceptable for use as original equipment on water well pumps or pumping systems. LF10-WR can prevents the pump from starting whenever the system falls considerable below cut-in pressure. Upon the restorations of the water supply, it will automatically cut-in. Or a manual
Pressure Switch for air compressor (LF10)

The LF10 pressure switch is used to regulate the tank pressure between two preset values on small (up to 150psi) electrically driven air compressors. It is available with an unloader valve, which prevents compressors from starting under load, and an auto-off disconnect lever for manual cut off the compressor. A four port manifold style is available which provides a means for easy mounting
Air Sensing Switches for HVAC System (AFS)

The AFS is a general purpose airflow proving switch designed for HVAC, detection of blocked filters and fan suction, air flow monitoring in ducts, pipes, tunnels, and other energy management applications. It may be used to sense positive, negative or differential air pressure. The plated housing contain a diaphragm, a calibration spring and a snap-acting switch. The sample connec
Vacuum Pressure Switch for PCB (LFS-01)

LFS-01 vacuum switch is applied to detection of negative pressure, such as the vacuum cleaner, packing etc. It provides solder pin connections and is especially designed for mounting on "Printed Circuit Boards".
High Pressure Switches for Air Compressor (LF17)

The rugged LF17 pressure switch is designed for the demanding requirements of lager, heavy duty commercial air compressors (up to 250 psi). The sturdy painted steel case and cover resiststhe harsh conditions encountered inindustrial applications. This style is also available with an unloader valve to prevent the compressor from starting underload.
Pressure Switch for PCB (LFS-02)

LFS-02 Pressure Switch is designed as an economical interface between pressure systems and Printed Circuit Boards. This switch can be used as a gauge or differential pressure switch with almost no hysteresis. It is applied to detection both positive and negative pressure. Features of this switch include a body design that allows the pressure ports to be rotated, various terminal styles in

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