When we refer to EX-Air Valves we are talking about electrically controlled shuttle valves as opposed to a pump that uses a c-spool piloted by an air signal from the pilot valve. The EX-Air Valve is available on all pumps except the NDP-5 and NDP-15 series pumps.

There seems to be some confusion regarding what center rod is used with the various diaphragms. Hopefully this article, and the chart below will add some clarity to this issue.

Have you ever wanted to switch out your old pump for a Yamada, but faced re-piping issues?

Lightweight, rugged and reliable, our KPL-24 offers maximum portability and dependability in heavy construction machinery and wind turbine applications. The KPL-24 fits onto a standard 5 gallon grease pail and provides a discharge pressure of 4061 psi max. It can be used stand-alone or as a centralized lubrication system.

I receive many calls from end user’s telling me that their pump has failed from dry running . Upon further investigation I find out that their problem is with a competitor’s piston pump, not an air operated double diaphragm pump.