Hypro 9910D813 These 3 diaphragm, anodized aluminum pumps achieve up to 21.4 GPM (81 LPM) and 725 PSI (50 bar). This series includes models 9910-D813 and 9910-D813GRGI.Pentair Hypro high pressure diaphragm pumps are recommended for spraying of herbicides, pesticides, liquid fertilizers and many other hard to handle fluids. Low-cost maintenance and almost wear-free operation make these pumps ideal for a wide variety of spraying jobs.Pressure and output are designed for optimum performance of medium to large-sized sprayers. Pentair Hypro high pressure diaphragm pumps are supplied with single or double-splined through-Shafts. Pumps include pulsation dampeners.