I imagined it would consist of 2 wires and 2 screw holes to connect the pipes... but when the device arrived, it had 4 screw holes? 2x small screw holes at the bottom and 2 much bigger each side.
The device is described as 1/4" so I bought stuff to connect a 1/4" pipe to it. But it seems the holes on the side are for the water pipes (but are about an inch wide) and the ones underneath look like are just for screwing it to something.
**broken link removed**
Anyone have any experience of this stuff that could possibly shine a light on what I have bought!?
The threaded hole for the 1/4" pipe should be nearly 1/2", that's 1/4" for the pipe ID and 2 X 1/8" for the sidewall ( two sidewall thincknesses in the OD measurement ) If the hole is nearly an inch, then it's way too big, and someting in wrong. Maybe the parts have the wrong dataplate or something. I'd call the supplier.
The threaded hole for the 1/4" pipe should be nearly 1/2", that's 1/4" for the pipe ID and 2 X 1/8" for the sidewall ( two sidewall thincknesses in the OD measurement ) If the hole is nearly an inch, then it's way too big, and someting in wrong. Maybe the parts have the wrong dataplate or something. I'd call the supplier.
Yes, for pipes it's the outside diameter that is measured, not the inside. That way you can have varying wall thicknesses for various pressure, but the same couplings.
Yes, for pipes it's the outside diameter that is measured, not the inside. That way you can have varying wall thicknesses for various pressure, but the same couplings.
In industrial applications it is usual to have some kind of a fitting as an interface between the pipe and valve, the valve is not generally screwed directly on to the pipe.
Have a look here:
For a 1/4" pipe, the size of the fitting which screws into a valve body or whatever is about 13mm diameter, the exact size depends on whether it is a BSP or an NPT thread.