This standard is for air operated pumps and includes those positive displacement reciprocating pumps used for general fluid transfer, which are driven by means of a compressed gas (usually air) from an outside source. The pump may be designed with a single diaphragm or double diaphragms connected to a reciprocating shaft in which one side of the diaphragm is in contact with the liquid being pumped and the other side is in contact with the compressed gas. The standard includes the following sections:
