This bundle includes 2 items: (1) Hypro D30 Diaphragm Pump with (1) 9910-KIT1724BLUE BlueFlex Diaphragm Repair Kit. Max. Flow: 9.6 gpm. Max. Pressure: 580 psi. Max. Speed: 550 RPM. Max. Fluid Temperature: 140° F. Shaft: Flanged for shaft kit. Port Sizes: 1" HB inlet, 1/2" HB outlet. Pump Shaft Rotation: CW and CCW. Diaphragm: 2, semi-hydraulic. The Hypro 9910-KIT1724BLUE BlueFlex Diaphragm Repair Kit includes 2 x BlueFlex Diaphragms (# 9910-620082), 1 x BlueFlex Accumulator Diaphragm (# 9910-550194), 4 x Valve O-Rings (# 9910-620030). The BlueFlex diaphragms are a new and innovative type of diaphragm material that redefine how durable a diaphragm can be, even under tough operating conditions. BlueFlex diaphragms use some of the top-performing diaphragm material currently available. The shape and thickness of the BlueFlex diaphragms have been carefully optimized to reduce mechanical stresses during the working cycle of the pump, even in tough working conditions. If your diaphragm pump is in constant use, it is recommended to replace the diaphragms every 3 months or 500 hours and replace the valves and o-rings every 6 months or 1000 hours to keep your pump working smoothly in the field.