How to make a pressure gauge with a cut off valve for an air filled seat cushion? Gauge suppliers?
I need a pressure gauge to take the guesswork out of filling a seat cushion to the proper level. The pump is a push/pull pump that inflates on either stroke and has a rubber connector that just slips over the fill valve for the cushion that unscrews.
It's a matter of comfort/stability/safety, where under/over inflation can impact the safety. currently it is done by "how does it feel" and physically feeling the firmness. Both of them are subjective and can be wrong. This is the reason for the gauge which would only vary in conjunction with the weight of the person sitting on it and air temp(altitude on rare instances).