[Shop-talk] pvc unions?

[scott.hall at comcast.net]

I need to disassemble some pvc tubing on a swimming pool filter system.  right now the tubing is permanently plumbed to the filter.  when I cut the lines to remove the filter, I'd like to be able to install something that will let me disconnect the filter again for service later without cutting the pipe.  I was thinking something like what you connect a p-trap with, only larger, but I don't see anything like that.

does anyone know of such fittings?  I cruised the big box stores and didn't see anything--only repair sleeves for gluing.  it's about 2-inch pvc tubing, for what it's worth.

also, anyone know a good abs glue/sealant (separate issue).  the filter body itself is made of what appears to be abs and a 1.5" threaded plug in the body has developed a crack.  I haven't been able to find another one and the company that makes the filter has been bought out.  I'd prefer not to buy a new filter just for the plug.

thanks.

scott