Pond Boss Forums AERATION Systems questions Valves on rotary vane compressors?

I'm no expert but I'd think you want a check valve at the diffuser simply because you don't want your pump to have to push a line full of water out every time it starts. I'm not aware that a van compressor can start up in reverse can it? I suppose it depends on what kind of motor is driving it? If the answer is that you don't have too much air going into your pond then by all means don't bleed any off. You can by pressure gauges at most any industrial supply place. If you go to your local Home Depot type place you will find gauges for compressor systems but they usually go up to 150 to 200 psi. You want a low pressure gauge. I found some nice liquid filled gauges for my system at Grainger that range only up to 30 psi. Perfect for this use. You don't want to use a non-filled gauge because the vibration will wear it out in a year or two. Check out grainger.com