We have recently purchased a house with an in-ground pool. The pool did not have a cover and the water was a nasty green. Once we got the water and electricity on I started to try to clean up the pool. The pool had not been winterized. The lines between the pump and the heater had frozen and split. The biggest problem I have is that the filter had not been drained and the flange at the bottom of the valve on top of the filter had split. The valve is a Hayward SP-711 and I have not been able to locate one. Does anyone know if they make a replacement valve for this model?