check valve question

[velotech2@fastmail.fm]

I cannot get our sump pump drainage pipe connection at the check valve to stop leaking. Its an ABS pipe fitted to a soft rubber check valve secured with a hose clamp. There is enough gravity in the remaining water to leak out around the fitting slowly. Is there a way bond the ABS pipe with the soft rubber check valve material? Thanks

[LazyPup]

If the pipe and the check valve are both the same size you should have no problem getting a tight seal by just tightening the clamps. If there is a size mis-match there is no way you will get a tight seal.