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Part # 4375
VALVE, Fuel Drain, 7/16"-20
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Product Details
Specifications
- Approval
- FAA TSO
- Condition
- New
- Manufacturer
- SAF-AIR Products
- Dimensions
- L: 1.35 x W: 0.4 x H: 0.4 in
- Weight
- 0.08 lbs
- Unit of Measure
- Each
- McFarlane Part Number
- 4375
Application
Universal Part
Universal part. Sizing customizable to fit your needs.
Product Description
| Thread | Locking | Flush Mounted | Open Action | Use Pin Type Cup | Material | Approval |
| 7/16-20 UNF | Yes | No | Push | Yes | 360 Brass | FAA-TSO-C76 |
SAF-AIR Lock Open Fuel Drain Valves
A clean no mess way to test and drain fuel!
Lock open fuel drain valves lock in the open position. This makes the pre-flight check for contamination and water in the fuel system very easy.
Determine part number by the thread size required. Thread sizes offered: 1/8 NPT, NPT, 3/8-24, 7/16-20. Part numbers with an H have a hose adapter built into the part. On models 1250, 1250H, 2500 and 2500H there is no O-ring where it screws together.
FAA and TSO-C76 Approved
- Eight models in two styles with or without 1/4" hose adapter
- All valves can be rebuilt
- Standard fuel resistant O-rings included
- Effortless operation with sure grip knob
- Simple operation - Push to test or push-and-turn to lock open
- Maintenance Tips
Find the replacement O-ring kit for your SAF-AIR valve: O-Ring Kits.
All SAF-AIR O-rings are made of Viton.
Thread: "UNF" (Fine thread) type are straight, non-sealing threads that rely on an O-ring to provide a seal. "NPT" (Pipe thread) type are tapered thread that seal as they are tightened. Measure the O.D. of the thread on the valve you are replacing and compare to the thread specifications table to determine the correct thread size.
Locking: Valve locks in the open position for easy draining.
Flush mounted: Valve is designed to mount flush with aircraft skin.
Use Pin Type Cup: Pin type cups similar to MCCCA-39680 may be used with indicated valves for sampling fuel.
Open Action: "Spiral" valves require a push and turn action to open. "Push" valves require a push action to open.
Hose Adapter Size: A hose may be attached to the valve for ease of draining fuel. The size is the hose I.D.
WARNING: Cancer and/or Reproductive Harm - California Proposition 65 Resources
Eligible Aircraft
| Make | Model | Start S/N | End S/N | Comment | Eligibility Chart |
|---|---|---|---|---|---|
| Many Many | Many | S/N 0 – ZZZZZZZZZZZZZZZ | ZZZZZZZZZZZZZZZ | Comment FAA & TSO-C76 Approved. Installer must determine eligibility. | Eligibility Chart 6637 |
Cross Reference
Reference only: Please verify this product is appropriate for your use case before adding to your cart.
-
CCA-4300
-
71D-4
-
BJ1000AS1M
FAQs
How do I maintain my fuel and oil drain valves?
Curtis Superior and SAF-AIR valves are designed for installation in a standard NPT port for NPT threaded valves or an AND-10050 style port for UNF threaded valves. Use a thread sealant or Teflon tape on pipe threaded valves. Never allow any thread sealant on the first thread . This will prevent contamination of the fuel system. Refer to aircraft manufacturer's torque specifications for the aircraft in which it is being used.
Replace the rubber seals as per the aircraft manufacturer’s recommendations or every ten years when no guidance is given. McFarlane stocks replacement seals and seal kits for both Curtis Superior and SAF-AIR valves. The new Curtis valves use a O-ring type seal instead of the flat seal that was previously used.
SAF-AIR valves are designed to be disassembled and the O-rings replaced. Over time, if the valve should start to leak, check to make sure the drain valve is tight. If drain valve is found to be tight, then check the O-rings. All O-rings used are buna "n", MS29513 Style, MIL-P-5315. SAF-AIR O-ring seal kits are available for most of their valves. Add a "K" or "-K" suffix to the valve part number.
Never have a hose attached in flight to the oil drain valve. Engine vibration and the additional attached mass can cause premature seal and valve wear which could result in valve failure and a loss of engine oil.
How do I keep contaminants out of my fuel system?
The fuel selector valve works in unscreened fuel. Contaminated fuel can cause selector valve seal damage. When fueling from possibly contaminated fuel sources McFarlane recommends the use of a fuel filter, such as Mr. Funnel or another filtering device, to reduce trash in the fuel system.
