OVERSPEED AND DRAIN VALVE ASSY (P/N 4t78g03) - As Removed
P/N: 4t78g03
Category: Fuel Drains & Sumps
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
Available Inventory
| Condition | Stock |
|---|---|
| As Removed | 1 Available |
Product Description
The 4t78g03 is an overspeed and drain valve assembly for turbine engine fuel systems. This component combines overspeed bypass protection with manifold drain and check valve functions, diverting fuel flow during engine overspeed conditions and purging residual fuel from the manifold during shutdown. Installed between the fuel control unit and fuel manifold, it supports FAA 14 CFR §25.999 drain provisions for safe engine operation.
Installation follows aircraft maintenance manual specifications and requires IPC compatibility verification for your specific engine model.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
Frequently Asked Questions
What is the OVERSPEED AND DRAIN VALVE ASSY (P/N 4t78g03)?
The 4t78g03 is an overspeed and drain valve assembly for turbine engine fuel systems. This component combines overspeed bypass protection with manifold drain and check valve functions, diverting fuel flow during engine overspeed conditions and purging residual fuel from the manifold during shutdown.
Is the 4t78g03 compatible with AVGAS and Jet-A fuels?
Fuel system components are designed for specific fuel types per their engineering specifications. The OVERSPEED AND DRAIN VALVE ASSY should be verified against your aircraft's fuel system requirements. Currently available in: As Removed. Contact us for fuel compatibility details.
Does the 4t78g03 require companion seals or gaskets for installation?
Many fuel system components require new gaskets, O-rings, or seals during installation. Check your aircraft maintenance manual for the OVERSPEED AND DRAIN VALVE ASSY installation requirements. We stock related sealing components and can help identify companion parts.
Are there shipping restrictions for the 4t78g03?
Most fuel system hardware ships via standard methods. Certain items containing fuel residue may require hazmat shipping procedures. We handle all packaging and shipping compliance. Same-day processing available for in-stock items.
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