Fengshen Pressure Switches BD Bangladesh Supplier Importer

Fengshen Pressure Switches: Reliable Control and Compressor Protection

The Fengshen Pressure Switch (often branded as Fenshen) is a widely recognized mechanical control device primarily used for safety and regulation in Refrigeration, Air Conditioning (HVAC/R), and various industrial applications. These switches are crucial for protecting expensive equipment, particularly compressors, from damaging high or low-pressure conditions.

Key Features and Functionality

Fengshen pressure controls operate on a simple yet highly reliable mechanical principle, activating an electrical contact when the monitored fluid or gas pressure reaches a pre-set threshold.

Compressor Protection: The primary function is to protect compressors by shutting off the circuit if the discharge pressure becomes too high (High-Pressure Cutout) or the suction pressure becomes too low (Low-Pressure Cutout).
Adjustable Setpoints: Most models feature adjustable control range and adjustable differential pressure, allowing engineers to fine-tune the cut-in and cut-out points to specific system requirements.
Monitored Media: Designed for use with common fluoride refrigerants (R22, R407C, R134a, R404A, R410A), as well as air and liquid media (water, oil) that are non-corrosive to copper alloys.
Switch Types: Available in various contact configurations to suit different control needs, including:
- Single Pole Double Throw (SPDT)
- Double Pole Single Throw (DPST)
- Double Pole Double Throw (DPDT)
Reset Options: Available with either Automatic Reset (resets once pressure returns to the safe range) or Manual Reset (requires human intervention after a fault shutdown).