Hi
I have a very old Hayward SP-733 (SP0733) Dial-A-Flo 3-way multiport valve. My pump (3 years old) can't maintain siphon once the pool drains down more than a foot. I can recirculate off the bottom, skimmers, or both if the pool is full, but when I try to drain down the pool a little with the valve switched to the bottom drain it loses siphon once the water level gets a few inches below the skimmer inlets. The valve is from the 1990s, I'm almost certain it is original, no idea if it's ever been rebuilt. Problem is, parts are no longer made for it. If I've missed something out of the many sites I've combed through, I'd love to know. So, my questions are:
1) if parts exist for this valve somewhere, where?
2) Exactly what make / model valve would you recommend to replace it?
Thanks!
Dave

I have a very old Hayward SP-733 (SP0733) Dial-A-Flo 3-way multiport valve. My pump (3 years old) can't maintain siphon once the pool drains down more than a foot. I can recirculate off the bottom, skimmers, or both if the pool is full, but when I try to drain down the pool a little with the valve switched to the bottom drain it loses siphon once the water level gets a few inches below the skimmer inlets. The valve is from the 1990s, I'm almost certain it is original, no idea if it's ever been rebuilt. Problem is, parts are no longer made for it. If I've missed something out of the many sites I've combed through, I'd love to know. So, my questions are:
1) if parts exist for this valve somewhere, where?
2) Exactly what make / model valve would you recommend to replace it?
Thanks!
Dave

