Flush Installation Sequence

A thorough drawing should be made first.

Lay out system on paper, determining location of reservoirs, valves, and best routing of pipe.

Determine neeeded materials and fittings.

Once layout is ready, determine the needed materials and fittings. The use of slip type fittings as much as possible is recommended.

Follow piping manufacturer's instructions.

With all piping, the manufacturer’s instructions must be followed closely to ensure a long term, watertight seal.

Lay piping with risers at each valve location.

Lay all piping with risers at each valve location. Be sure all back fill is properly placed and compacted to avoid future settlement.

Bring fill up to mid-point or pipe.

Bring fill up to mid-point of pipe.

Install thrust blocks.

All fittings including elbows, tees, or other changes of direction must now have concrete thrust blocks installed to insure stability of pipe and prevent separation during operation.

Complete covering pipe.

Complete the covering of pipe with compacted fill until there is at least 12” of soil over the top of the pipe.

Wet trench for at least 48 hours.

With 12” of cover, the trench should be thoroughly wetted for at least 48 hours to further consolidate the soils.

Run conduits or lines required.

Don’t forget to run any other conduits or lines required for controls or other needs before trench is completely filled.

Leave space around the risers.

It is best to leave area at riser more open than remainder of pipe. This provides space so risers can be cut down to proper height to prepare for addition of flanges.

Glue flange

With riser at proper height, carefully glue flange to pipe. It is best to have a preset laser level ready to verify proper height of flange relative to floor during this process.

Riser and flange ready for backfill.

Riser with flange in place ready for final backfill. Don’t forget to provide cable under valve if required.

Ready for valve placement.

With flange set, conduits run, and cable in place, this system is ready for valve placement.

Lid removed from valve.

Remove lid from valves in preparation for installation of risers.

All valves in a  reservoir type system should have a hold down cable installed.

After bolting valve to flange, all reservoir type systems should have a hold down cable installed to lessen pipe movement potential in operation.

Complete valve ready for backfill.

Complete valve ready for final backfill.

Round valves have an external flange.

Round type valves install in similar manner to trapezoid type except bolt flange is external.

Blocked out valve ready for concrete pour.

Back filled round valve being blocked out for concrete pour.

Installed valve blocked out ready for main floors to be poured.

Installed valve blocked out ready for main floors to be poured.

Floors poored with a block out left around the valve.

Floors have been poured with block out left for valve. Note curb/ramp behind valve to control back splash. This is very important.

Final pour around valve.

Final pour around valve. Again note entry ramp behind valve.

Reservoir footer

Preparing to pour reservoir footing/pad per drawing details. Note tank weld plates pre-positioned to floor rebar mat.

Pouring the reservoir pad.

Pouring reservoir pad. Footing was poured prior to make positioning plates easier.

The installed reservoir.

Installed reservoir. Note flush line exiting bottom of tank using a through the side one-piece fixture from Agpro.

The completed system.

Once valves are connected to air and system is filled you are ready to flush!