This bundle includes 2 items: (1) Shurflo 8000-533-236 Automatic-Demand 115 VAC Diaphragm Pump with (1) 100 PSI Pressure Gauge. The Shurflo 8000-533-236 Automatic-Demand Pump is a 3 chamber diaphragm pump that delivers the same reliability as a 12-volt pump but in a 115 VAC capacity. With a low amp draw, compact size, and ability to mount in any position, this Shurflo 8000 Series Diaphragm Pump is perfect to use on spot sprayers and agricultural sprayers for spraying applications that require flow rates up to 1.4 gpm. The 60 psi demand switch eliminates the need for a pressure regulator and is used in applications that require a set flow and pressure (eg. spray wands on spot sprayers). The demand switch operates by automatically turning the pump on and off as flow is required. The Pressure Gauge included in this bundle has a maximum reading of 100 psi. It is used to measure pressure and help diagnose any possible pressure problems. The gauge has a glass face and is glycerin-filled to reduce pulsation and lubricate the internal mechanism. Can be easily installed with a wrench.