Pulsafeeder Pre-Engineered Skid Systems - Manual (Page 17)

Pre-Engineered Skid Systems
Installation, Operation and Maintenance Manual
PES00039, Rev. B System Components and Settings Page 17
Set Pressure Relief Valve (PRV)
Refer to Table 1 in the Appendix, Page 23, for recommended PRV pressure settings.
With Pressure Relief Valve and Back Pressure Valve fully open (lowest pressure setting),
1. Close Skid Discharge Valve.
2. Start pump, monitor Skid Discharge Gauge pressure. It should pulse slightly. On most
Pulsafeeder Pre-Engineered Skid systems, relief flow should be passing through the PRV into
the suction header. If your Pressure Relief Valve is configured differently, monitor relief flow
appropriately.
3. Gradually increase pressure at PRV until the Skid Pressure Gauge reads the maximum
allowable pump and/or system pressure at the highest pulsation pressure.
4. Shut down pump.
5. PRV is now set.
Set Back Pressure Valve (BPV)
Refer to Table 1 in the Appendix, Page 23, for recommended BPV pressure settings.
After the Pressure Relief Valve has been set, check to see that the Back Pressure Valve is fully open
(lowest pressure setting).
1. Adjust Skid Discharge Valve and/or system piping to allow free discharge from the skid
discharge piping. Capture free discharge in an appropriate manner.
2. Start pump, monitor Skid Discharge Gauge pressure.
3. Gradually increase pressure at BPV until correct pressure is indicated on the Skid Discharge
Gauge.
4. Shut down pump.
5. BPV is now set.
6. Re-adjust system discharge piping/tubing to enable flow into the served process.
Care must be taken to channel any free flow from the pumping system into an
appropriate receptacle. Eliminate any possibility of splashing or spraying or spillage.
Always wear suitable protective equipment (gloves, safety goggles/glasses, coveralls,
etc.) when working with or around chemical dosing systems.
Check all system piping/tubing connections to ensure that they are properly tightened (hand-tight for
plastic fittings) and leak-free.
Pumping system is now ready for operation.
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CAUTION