THREAD SIZE FOR PRESSURE SWITCH PIPE FITTING PLEASE

[cobra148]

Hi.
please could some body look at the attached picture of my airmaster tiger 8/35 pressure switch.
I need to purchase a female fitting to 6mm pipe push fit , but I am unsure of thread size to get
that will thread onto the pressure switch.

Thank you.

 

[rtbcomp]

Can you measure the outside diameter and count the threads per inch? Then have a look here http://www.airlines-pneumatics.co.uk/tools-thread.asp

If I were to guess I'd go for 1/8" bsp.

 

[cobra148]

Hi thanks for that.
It turns out that for some reason, these pressure switches have a 3/8 unf 24tpi thread for the 6mm bleed pipe nut.
But to make sure I today purchased a 3/8 24tpi brake pipe nut locally and it is perfect.
So it looks like I will need a 3/8 unf female to 1/8 bsp male fitting. then purchase a 1/8 female bsp 6mm push fit.

Don't know why they went for 3/8 unf on these pressure switches though.
Thanks for your help.

 

[rtbcomp]

That's seems a bit odd, maybe your switch was designed for a compression or flared fitting rather than a push-fit.

Looks like you'll need something like a JIC female to bsp hydraulic adaptor, Google "jic to bsp adaptor"

 

[normspanners]

it is -3 jic that is not a 'standard' hydraulic size, but if you have a brake flare nut to fit it then just buy 1/4 bsp socket and weld it together and then screw standard qr bsp to whatever pipe size you want.