I need a gasket for this Curtis CCA-1550 drain valve, where can I find the part number?
Per the manufacturer, replacement seals for these drain valves are no longer available. We do not recommend that they be overhauled. Replace the valve if it begins to leak.
Additionally, the valve is not recommended for halogenated hydrocarbons, nitro hydrocarbons, Phosphate ester hydraulic fluids, automotive brake fluids, ketone, ethers or alcohols. Fuels with additives such as alcohol or ether can cause premature deterioration of the seal rings.
What is the difference between the CCA-1250 and the CCA-1550?
CCA-1250 is spiral, twist open and CCA-1550 is push to open, turn to lock and conforms to NSN 2915-00-202-6420 when CCA-1250 does not.
Do these Curtis pipe thread drain valves come with the required o-rings?
This does not accept an o-ring and only accepts a seal. The seal is built in to the valve.
What is the operating pressure of these valves?
This valve is gravity fed so there is no operating pressure that it pushes fluid out. However, this has been has been tested at 40psi if fluid was to push through the valve.