BSPP to BSPP

[RyanM]

Hi all,

At work one of the pumps is on it's way out, so a colleague has bought a new one, but it isn't totally a straight swap.

The pump has a 1 1/2" BSPP inlet and a 1 1/4" BSPP outlet, and he has bought the same size unions to fit directly on to the inlet/outlet. The unions are also BSPP though, and don't really tighten up.
I'd have normally ordered BSPT fittings, but is there anything I can do or use to get a good seal when using BSPP to BSPP?

The fittings and pump are Stainless Steel.


Thanks a lot

 

[Charnwood]

Loctite 577.

 

[spudkey]

Scratch the threads up this will stop the PTFE / loctite pushing out

 

[Master of None]

If they are union ends they should have a gasket.

 

[RyanM]

Thanks for the replies guys. But we didn't want to risk any sort of leak, so I welded one half one the union on to the pump housing this afternoon, pressure tested it, and all is ok

Master of None, the pump and unions are seperate items. Although the unions don't have gaskets in either, none of ours do.


Cheers