Thanks for the offer I would prefer to be able to check if the regulators are working ok.Back in. I've got a regulator and it's yours if you PM me. 1/4" female in, 1/8" female out, 1/8" female for a gauge. There's no gauge with it, I've only got one and you can't have it.
No not near you, a calibrated meter are these expensive?Vac gauges often cover a few psi of +,
Random example
https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.co.uk/ulk/itm/264116133987
Another one to look for is a gauge for an inflatable boat or kayak as they only go up to 5psi or so. Cheap but might need some work on the fittings.
Old aircraft gauges if you want to spend a bit more money
https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.co.uk/ulk/itm/133067712848
Edit, not sure.if you actually wanted a gauge or just a regulator, sounds like the cheb has sorted the reg out. As for testing/checking a gauge the only simple way I know of would be to plumb it in conjunction with a known good one or a calibrated meter.
I have a meter if you are anywhere near me?
Thanks but too far.i have the kit to check it if you need to know your gauge reads right
OK thanks for that, will research that. These lower pressure regulators could I fix one in, so I could switch between the regulator that I'm using at 40PSI, over to the low pressure one, then switch over somehow back to the 40PSI one?No not near you, a calibrated meter are these expensive?
This is what I've got on the wall at the moment. As mentioned in my other thread I'm quite new to all this. Replacement regulators are cheap enough I asked about testing them because when I fitted them onto the board I used high strength threadlock which might be a pig to get undone, without a flame gun. We used the flame gun yesterday to undo the assembly on the bottom of the pressure pot yesterday to see if was clogged up. Using the flame gun on the board to get the regulators and fittings undone is a tad more involved. The grit was stopping coming through and sometimes spurting I had the valve fully open. Problem might have an easy quick fix, just close the valve done so less grit is coming through. I read somewhere else making up a 6 inch copper or plastic stand pipe with holes in it.You could connect both regulators to the same tank if you wanted. You would need a non return valve in the line from the low pressure one and some method (valve) on the tank to drop off the 40psi before refilling with low pressure.
A non return valve will have some resistance so you would want the gauge mounted on the tank as you might need to turn the low pressure reg up a little.
Or you could have a valve on the low pressure reg outlet as long as you remembered to turn it off before turning on the 40psi one.
I paid about 200 for a used digital portable gauge but I think they start about 100 new up to whatever you want to spend.
Calibration costs about 50 a year but varies depending how accurate you need it and you might want it done more than once a year.
If you bought a decent quality analogue gauge new then it would be within a certain spec and would come with a certificate and you could use it to check the tank gauge against. Or just fit it to the tank and take it of for recalibrate as required.
Well I'm surface etching, frosting glass as well as teaching myself multi level carving into glass. Frosting can be done around 30-40 PSI, another technique, shading, uses different degrees of gray tones, shading can be done at very low pressures 2/3 PSI.just out of curiosity why does it need to be so accurate pressure gauges can be had of ebay for less than a tenner if its for your blast pot it doesn't realy matter that much