All,
To fix a broken valve, I am replacing all above ground pipes. Its 1980s pool and figure its a good time to refresh it all. Photos should just digging out around the entrance to the pumphouse.
I'll be using 50mm Jandy (3-way) valve for suction side, and 40mm Jandy (3-way) to return lines.
1) In filling in the void I created when digging out around the pipework, is it best to backfill with the clay/soil that came out or use sand?
2) Where I aim to cut the suction and return lines where I dug it out, it is below the water level. Before I cut the pipes and flood the area (hopefully not), what is the right way to deal with it, simply drain the pool to below the pipe level?
3) Looking online, I am seeing photos of the 50mm 3 way suction side valve with pipework slotting INSIDE the valve, and some where the 90 degree bends are on the OUTSIDE of the valve. Is there a best approach here for maximum flow?
4) In the new design, there will be some pipework that will run on the top of the concrete slab behind the pump (ie from the filter, it will run down to the concrete slab, and route over the slab to where the pipes run underground. Is there a recommended distance from the slab to the pvc pipe that I should maintain? I obviously dont want the pipe sitting on the concrete as I could imagine the vibration against the slab damaging the pipe. Would 1 inch above suffice?
5) Regarding my spa jets (previously they are cut off disconnected pipes), I've found 2 pipes in the pumphouse that is when blowing air through each line with a blower, I can see air coming out of the spa jets through those 2 pipes in the pumphouse. I imagine one is for the return pool pump water feed (WATER), and the other is for air, both are 40mm pipes. Regarding the AIR line, how should this 40 mm pipe be terminated in the pumphouse? currently its just an open pipe.
To fix a broken valve, I am replacing all above ground pipes. Its 1980s pool and figure its a good time to refresh it all. Photos should just digging out around the entrance to the pumphouse.
I'll be using 50mm Jandy (3-way) valve for suction side, and 40mm Jandy (3-way) to return lines.
1) In filling in the void I created when digging out around the pipework, is it best to backfill with the clay/soil that came out or use sand?
2) Where I aim to cut the suction and return lines where I dug it out, it is below the water level. Before I cut the pipes and flood the area (hopefully not), what is the right way to deal with it, simply drain the pool to below the pipe level?
3) Looking online, I am seeing photos of the 50mm 3 way suction side valve with pipework slotting INSIDE the valve, and some where the 90 degree bends are on the OUTSIDE of the valve. Is there a best approach here for maximum flow?
4) In the new design, there will be some pipework that will run on the top of the concrete slab behind the pump (ie from the filter, it will run down to the concrete slab, and route over the slab to where the pipes run underground. Is there a recommended distance from the slab to the pvc pipe that I should maintain? I obviously dont want the pipe sitting on the concrete as I could imagine the vibration against the slab damaging the pipe. Would 1 inch above suffice?
5) Regarding my spa jets (previously they are cut off disconnected pipes), I've found 2 pipes in the pumphouse that is when blowing air through each line with a blower, I can see air coming out of the spa jets through those 2 pipes in the pumphouse. I imagine one is for the return pool pump water feed (WATER), and the other is for air, both are 40mm pipes. Regarding the AIR line, how should this 40 mm pipe be terminated in the pumphouse? currently its just an open pipe.