The Model-1101 compressor from Thomas Products Div. (formerly Rietschle Thomas), Sheboygan, Wis., uses a rolling diaphragm that combines the best features of both rotary and diaphragm pumps. The Model ...
The surface area of the plunger and the degree of spring compression determine the amount of pressure necessary to actuate the switch. When pressure on the plunger exceeds that exerted by the spring, ...
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