Pressure Switch Repair & Overhaul

About the Pressure Switch

A pressure switch is an electromechanical sensor that monitors fluid or air pressure and actuates an electrical contact when a preset threshold is crossed, providing system protection, indication, or control signals within the sensors-and-switches domain. A sensing element such as a diaphragm, bellows, or piston deflects against a calibrated spring to open or close contacts at the setpoint, feeding warning, shutdown, or sequencing logic. In service it experiences fatigue and creep of the sensing element shifting calibration, contact erosion, pitting, and oxidation increasing resistance, and spring relaxation altering trip points. Diaphragm rupture, seal leakage, contamination, and corrosion are common failure modes that produce setpoint drift, chatter, or failure to actuate, driving recalibration, contact servicing, seal replacement, and setpoint and continuity verification.

Our Pressure Switch Repair Capability

QTC repairs and overhauls pressure switch components to the original manufacturer's specifications under our FAA and EASA Part 145 approvals. Our engineers — including former OEM sensors & switches specialists — perform teardown, inspection, cleaning, component replacement, functional and leak testing, and certification, and develop repairs for rejected and beyond-economic-repair (BER) hardware.

View Differential Pressure Switches capability →