tender for septic tank cleaner vacuum motor supply and installation work; technical data of vacuum pumpmake : jurop pn 45d or equivalent (in case of equivalent make, prior approval of client required) type : rotary sliding vanes, positive, displacement delivery: 5300 lpm to 6000 lpm @ 1300 rpm – 1400 rpm max. vacuum: 92%1. the 4-way change-over valve will enable the unit to change quickly from the pressure to the suction mode and vice-versa.2. a pump inlet filter of adequate capacity will be incorporated in the system for the protection of the pump against any ingress of foreign particles, in both the suction and the overpressure modes of operation.3. pressure relief and vacuum relief valves will be line mounted to protect the equipment and system from over pressure and excessive vacuum respectively.4. the valves will be factory set to control the operating pressure and vacuum parameters of the system.(second call)