Throughout the year we diagnose hundreds of pump and equipment problems over the phone and have found that in most cases it isn’t a pump problem, but rather a system problem. Sometimes the best tool you can use to help us determine your pumping issue is a camera.
By sending us a few well snapped pictures from your camera, of the pump and/or system, will give us a greater understanding on diagnosing your pumping issue. In addition to visuals, if we know the suction pressure, discharge pressure, and air inlet pressure, most problems can be solved quickly.
When someone asks me about a Yamada 1/2” pump, most people think about the NDP-15 series pump. However, there is another option called the DP-15. This pump uses the NDP-15 polypropylene liquid side, but uses the DP-10 air section.
The DP-15 is only pump available with a polypropylene liquid end and has the same elastomer options as the NDP-15 series pumps. Be advised: there is a significant difference in the maximum flow rates. The DP-15 series has a maximum flow rate of 7.4 GPM, while the NDP-15 series has a 13.5 GPM maximum flow rate.
While the NDP-15 series is good for higher flow rates, the DP-15 is ideal for low flow rates, extended dead head and dispensing applications. Both pumps share a common liquid end kit, but require different air motor kits. The DP-15 uses a K115-AM air motor kit and the NDP-15 uses a K15-AM motor kit.