Solar Vacuum Breaker Location for Best Drainage

[Isaac-1]

A Y might help there, however all Y's that I have seen are DWV drain pipefittings, not schedule 40 pressurized PVC pipe, and while roof top solar is a relatively low pressure application, it is also at well about the generally suggested operating temperature for PVC, so I would have some concerns about using a DWV fitting that has a much shorter socket depth and may be thinner than standard schedule 40 at that location.

Ike

 

[mas985]

Theoretically a WYE might have less head loss than a TEE but compared to all the other head loss in the system, it will be insignificant. For example, A typical TEE branch will have about 0.1' of head @25 GPM or less than 0.05 PSI drop. The WYE might cut that in half.

 

[rogue]

Hi

Appreciate the perspective!

Sched 40 PVC 2 inch WYE by SPEARS for $11.25 plus ship at PEX supply at

http://www.pexsupply.com/PVC-Schedule-4 ... s-14952000

Regards,

Chris

 

[Isaac-1]

That looks like a 45 degree Y, you would probably also need another 45 degree elbow to go with it to get 90 degrees total.

Ike

 

[jblizzle]

Uhhh ... why would you spend an extra $10+ for a Y fitting when a T would work just fine with negligible head loss difference?

 

[rogue]

I was just curious, though the hydraulic flow looks "cleaner"

Understand re the 45 deg fitting. Have them on hand.

Regards,

Chris