I am replumbing my equipment pad, and had planned on placing a check valve before the pump. On occasion when pumping my DE filter, DE will flush back in to the pump basket. The only check valves I was able to find were spring loaded, solid body. Should I use these, or just skip the check valve altogether? The pump basket cover will be just about 1/2" lower than the level of the pool water.
Check Valve Usage
- Thread starter jparr
- Start date
See if you can find the Jandy Swing Check Valves. They have the same footprint as all the other Jandy valves, but have a clear top so you can see the check valve portion when it is flowing.
I like to take the springs out and let the valve close by water pressure, as opposed to having them have to fight the spring to open.
I like to take the springs out and let the valve close by water pressure, as opposed to having them have to fight the spring to open.
If I understand your application, I would consider simply installing a shut-off valve. Cheaper than the check valve and more reliable....check valves are always a potential problem asource and shut-off valves seldom are.
C'mon guys! 
The only check valve you need to install is the one IN the filter!
In the pipe that comes from the pump into the bottom of the filter there is a flapper valve - yours is probably missing. The part # is ECX- 407781. It's accessible without opening up the filter tank and is quick and easy to do
If you want to tackle this yourself, I'll help walk you through it (** however, I'm in the midst of moving and can't guarantee a 1 day answer - but since I've now told you what the problem is, I'm sure someone else will step up, should I fail to respond in a timely manner )
I think they cost ~ $10.
The only check valve you need to install is the one IN the filter!
In the pipe that comes from the pump into the bottom of the filter there is a flapper valve - yours is probably missing. The part # is ECX- 407781. It's accessible without opening up the filter tank and is quick and easy to do
If you want to tackle this yourself, I'll help walk you through it (** however, I'm in the midst of moving and can't guarantee a 1 day answer - but since I've now told you what the problem is, I'm sure someone else will step up, should I fail to respond in a timely manner
)I think they cost ~ $10.
Is that in all DE filters? If so, I have never known that. There has never been one in my sand filter.....should there have been? How about cartridge?
Dave, this is only for the Hayward "EC" filters. ( I imagine that the other 'bump style' filters are the same)
As opposed to sand or cart filters, DE filters are 'bottom fed' with dirty pool water.
As opposed to sand or cart filters, DE filters are 'bottom fed' with dirty pool water.
Ok, I see now where there is supposed to be a check valve on the inlet side of the EC65. Mine is missing or stuck. I'll need to examine it when I tear it down this weekend.
http://www.poolcenter.com/parts_filter_ ... _ec-65.htm
http://www.poolcenter.com/parts_filter_ ... _ec-65.htm