Pressure Reducing and Shutoff Valve Repair & Overhaul
FAA & EASA certified pressure reducing and shutoff valve repair and overhaul.
About the Pressure Reducing and Shutoff Valve
A pressure reducing and shutoff valve regulates high-pressure bleed air down to a controlled downstream pressure while providing positive shutoff of the supply when commanded, serving as a pressure-management and isolation device in the pneumatic system. It typically combines a spring-loaded regulating element, a pilot or solenoid control, and a butterfly or poppet shutoff, balancing reference pressures to hold the outlet within limits. Subjected to high temperature, pressure cycling, and contamination, its principal degradation modes are seat and seal erosion, diaphragm fatigue, sticking actuators, regulation drift, and internal or external leakage past the shutoff. Inspection commonly reveals pressure regulation outside tolerance, slow or incomplete closure, and worn seats. Overhaul restores seats, seals, springs, and actuation to recover accurate pressure setpoint and leak-free shutoff performance.
Our Pressure Reducing and Shutoff Valve Repair Capability
QTC repairs and overhauls pressure reducing and shutoff valve components to the original manufacturer's specifications under our FAA and EASA Part 145 approvals. Our engineers — including former OEM pneumatic & air management specialists — perform teardown, inspection, cleaning, component replacement, functional and leak testing, and certification, and develop repairs for rejected and beyond-economic-repair (BER) hardware.
All Pressure Reducing and Shutoff Valve Parts We Service
Click a part number for repair details and to request a quote.
| Part number | Make | Model |
|---|---|---|
| 4067B000-003 | Dornier | 328 |
| 4067B000-004 | Dornier | 328 |
| 4067B000-005 | Dornier | 328 |
| 4067B000-006 | Dornier | 328 |
Frequently Asked Questions
Does QTC repair pressure reducing and shutoff valve components?
Yes. QTC repairs and overhauls pressure reducing and shutoff valve components under our FAA & EASA Part 145 approvals. Our catalog lists 4 pressure reducing and shutoff valve part numbers. Request a quote to confirm capability and turnaround.
What aircraft use the pressure reducing and shutoff valve?
In our catalog, pressure reducing and shutoff valve part numbers appear on Dornier. See the full parts list below.
What is involved in pressure reducing and shutoff valve repair and overhaul?
Our process typically includes incoming inspection, disassembly, cleaning, non-destructive evaluation, repair or replacement of worn elements, functional/leak testing, and certification with the appropriate airworthiness release.
Request a Quote for Pressure Reducing and Shutoff Valve Repair
Send us your part numbers and condition. Our engineers respond with repair scope, turnaround, and pricing.