PP 256si gas inlet twisted off

[Cdweave]

I have a PP 256si and the back gas inlet twisted off and need a replacement, is this something I can get local (PA) or is this something that needs shipped back? It’s less than a year old?

[Rambozo]

I have a PP 256si and the back gas inlet twisted off and need a replacement, is this something I can get local (PA) or is this something that needs shipped back? It’s less than a year old?

Depends on where it broke and if you can get the broken piece out.

[christian]

Yeah,

I broke one off the back of my 210EXT.

They're not robust at their neck, and I just replaced the whole solenoid with one that had NPT pipe threads, so that I could use other fittings with it that are easier for me to find, like a 45 degree elbow and quick connect fittings.



The threads on that inlet threaded into the OEM solenoid didn't seem to be a metric thread, as I had a gal at a Fastenal store check it.



So, while I was waiting for a cheap solenoid with NPT threads (only was $18-$20) to arrive to me, I was able to just solder the fitting back togather for keeping the welder ready for use.

[Rambozo]

A lot of Chinese stuff is BSP or BSPP.

[christian]

Yeah,

I was getting blank stares from Fastenal staff, if I recall, who were otherwise pretty savvy when identifying thread types for me.

A lot of Chinese stuff is BSP or BSPP.

[zoama]

For those who don't know, BSP or BSPP is like npt (pipe thread) with no taper. It's supposed to seal with an o-ring but many Chinese manufacturers just put some sort of clear hardening sealant on the threads with no o-ring.

[Rambozo]

British Standard Pipe, British Standard Parallel Pipe. BSP or BSPT does have a slight taper, while BSPP doesn't. Much like our NPS (National Pipe Straight) used in the electrical industry. Also the thread form is 55° instead of the 60° of NPT. It can seal in several ways, like zoama mentioned with an O-ring (with or without a nut), with a crush washer and nut, a conical or flat seat, a sealing washer, or the infamous glue. The thread pitch is also different on some sizes.