Liberty Pumps SJ10A Jet Water-Powered Sump Pump with Alarm. Never used or installed. Parts are factory sealed. Opened for inspection only. All parts and instructions included. Sump Jet Water-Powered Sump Pump with Alarm. SJ10A Water Powered Back Up Pump with indoor 115v alarm with 9v battery back-up. Compact probe mounted sensor, auxiliary contacts with visual and audio alarm. The SumpJet® is a water powered back-up sump pump that will protect your basement in the case of a power outage. This unique product is powered by your municipal water supply and requires no electricity to operate! With a compact high efficiency design, The SumpJet® removes 2 gallons of sump water per 1 gallon used. Liberty Pump SJ10A Features. Accepts 20PSI up to 100PSI inlet supply pressure. Includes alarm with audible and visual warnings when back-up pump is activated. Works off municipal water supply. 3/4 NPT water inlet connection. Sharkbit inlet connection accepts pex, copper, or CTS CPVC 3/4 line. Includes adjustable stainless steel hose clamp for easy mounting. Built-in screen with removable foot valve. Constructed of durable PVC. Note: The SJ10 requires an uninterrupted water source to operate. If you have a well pump, the SJ10 will not operate during power outages. Liberty Pump SJ10A Specifications. Maximum Fluid Temperature(F): 130 Degrees.