Control Devices - CR25-100 -CR25 CR Series Brass Pressure Relief Valve, 0-100 psi Adjustable Pressure Range, 1/4" Male NPT

I got this to add to my Viair 300 compressor which does not have any auto off switch. When changing tires, you need to be fairly quick about shutting it off at the pump or you risk burning it out. There are options to wire in a pressure switch or you can buy a pump with one built in. For a fraction of the price, I added this to a tee fitting and it works well to bleed off excess pressure without loading the pump. Time will tell, but so far so good.

Very good product for what I am using it for.

Label is far from accurate but does vent when needed

This is a well built pressure relief with an easy to adjust pressure set point. The scale you see is only a sticker and is questionable at best, but if you have a nice pressure gauge, you can dial in your set point really well. Opening and closing is smooth and quiet with overall functionality being excellent.

The PRV that came on my pre-built spunding valve was erratic and I was constantly re-adjusting the valve to manage the pressure on my keg for pressure fermentation. This one is holding much more steadily.

The simple design makes it easy to tune for your projects. I have ordered this vale multiple times for different projects.

Great device to do pressure fermentation for high pressure lager beers

I can dial the pressure right in with this and it works perfect for fermenting in a keg.