NOTE the PVC sleeve the pool guy put in is a smooth female type.... can that handle a 180 degree turn with PVC Glue to another smooth male pipe? If not, how can this GLUED in piece be removed to put in a threaded sleeve that I would have THOUGHT should have been used??
PLUMBING: Pool Return Valve
by
Jim Ginas
+7
Thoughts / Solutions? Pool guy installed a new pump (Hayward SP3400VSP EcoStar VS Variable-Speed Pool Pump Energy Star Certified), and Return Valve. The pool guy set the Return Valve where the pipe for backwash and emptying the pool is facing the BACK of the shed! so the pipe needs to turn water 180 degrees toward the woods. My concerns are: 1) the PVC sleeve he glued on is a SMOOTH female side, requiring PVC glue and I'm not clear that will withstand the pressure of the pump pushing water out. 2) Can that turn be a 180 degrees turn or should at the VERY least be two 90 degree turns?
so Valve with Handle at top of this picture...... note it points at the shed, and would connect to the pre-laid pipe that is buried to the woods. (Worked GREAT with previous pump and valve, BUT the previous valve was pointed to the SIDE so it made it ONLY a 90 degree return.
A 180 degree turn would be to sharp of a turn which may cause back pressure or cavitating. You can use pieces of pvc pipe and 90 degree elbows to make a wider 180 degree turn. I would say 12" pieces of pipe would be sufficient.
PVC glue will be strong enough under pressure. Just make sure you use a PVC cleaner (which is purple) then use the PVC glue.
I would use two 45 degree elbows instead of one 90 degree elbow for each turn. this will remove some of the harshness of the turn and reduce the amount of back-pressure when you are flushing.
Doesn't matter if you use 1 180-degree or 2 90-degree or 4 45-degree elbows. The cumulative effect will be the same. A wider diameter elbow can reduce the PSI in the turn. A better solution might be to disassemble at the pump and rotate the discharge to begin with.
Have you tried using a back wash hose?
You could try flexible pipe used in hot tub applications. You could possibly use a stainless band-clamp with the flex as well. My backwash has a 90 deg bend with a high-flow 1HP pump with no adverse effects.