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. Others are metric threads. 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.
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 valves for ease of draining. The size indicated is the hose I.D.

Curtis Superior Oil Quick Drain Valves

Curtis Superior Valve Co. Inc. has produced, engineered, manufactured, and tested aircraft valves to exacting standards since 1944. They have many standard valves to solve a wide range of problems.

• Corrosion resistant, stainless steel springs
• Specially compounded "cure dated" synthetic rubber seals to withstand a wide variety of liquids over a broad temperature range
• Unique wedge seal design prevents leakage

Fuel and Oil Quick Drain Valve Information 

Maintenance Tips