Diaphragm valves are also known as:

Diaphragm valves are often referred to as Saunders valves, named after the company that developed this type of valve design. This nomenclature is widely recognized in the plumbing and steamfitting industry. The diaphragm acts as a barrier that seals off the flow of fluid, allowing for good control over flow rates and is less prone to contamination, which is particularly beneficial in applications involving corrosive or clean fluids.

The other terms are not standard or commonly associated with diaphragm valves. Pulsation valves and lever valves refer to different mechanisms and designs that do not employ the diaphragm method for flow control. Terms valves is not a recognized term in this context, making Saunders valves the well-established name for diaphragm valves.