Part # 4700-08X
Manufacturer Code O-418-KIT
Alternate Part #'s HAY0612171, O418, SP735GA, SPX0735GA, SPX735GA, U9244
O-ring w/ Teflon Seal - O-418-KIT
Commonly Used On
I have a Hayward SP715XR50 multiport valve. I thought I needed to replace the spring in it but when I took it apart, this piece (O-ring and Teflon seal) was not in it. Should it have been? My water flow has been leaking into the backwash line and I've already replaced the spider gasket. The handle seems lax so I thought the spring might be weak. Maybe I'm just missing parts? Thanks for your help.
That would cause water to leak out of the stem shaft. Please check the housing. Sometime it can become warped or get a gouge in it. If that is the case the valve should be replaced. If the body is in great shape you should purchase our complete rebuild kit. APCK1034. It will provide you with all the necessary orings.
Have you thought about just install a ball valve on backwash line and keep it closed unless you backwash? Closed when running OPEN when backwashing. Generally you have to change entire internal assembly to stop leaks.
If this was missing you do need it for sealing purposes
how do you install the Teflon ring on the shaft next to the o-ring on a Hayward sp710 valve? Is it split? My old one is broken. It is leaking under the handle.