1925-00-3 — Bleed Air Regulating and Shutoff Valve Repair & Overhaul

Component Overview

The bleed air regulating and shutoff valve controls hot, high-pressure air extracted from the engine compressor, both regulating its pressure to a scheduled value and providing positive isolation of the bleed source. Located at the engine bleed port feeding the pneumatic manifold, it combines a regulating function, often via a pneumatic actuator and sensing pressure, with a fail-safe closure capability that protects downstream ducting, valves, and packs from overpressure and overtemperature. Operating in a severe high-temperature environment, it experiences seat and seal erosion and leakage, butterfly and shaft bearing wear, actuator diaphragm and spring fatigue, contamination of sensing passages, and corrosion. Drift in regulated pressure or incomplete shutoff drives functional and leakage testing, recalibration, and overhaul of the regulating and sealing elements.

Aircraft Application

Part number 1925-00-3 (Bleed Air Regulating and Shutoff Valve) is installed on the Beech 1900. QTC supports operators and MROs servicing this platform with certified repair and overhaul.

Our Repair Capability

QTC repairs and overhauls 1925-00-3 to the original manufacturer's specifications under our FAA and EASA Part 145 approvals. Our team — including former OEM pneumatic & air management engineers — performs teardown, inspection, cleaning, component replacement, functional testing, and certification, returning a serviceable unit with the appropriate airworthiness release. We also develop repairs for rejected and beyond-economic-repair (BER) hardware.

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Related Parts

Other bleed air regulating and shutoff valve part numbers we repair — view all Bleed Air Regulating and Shutoff Valve parts →

Frequently Asked Questions