HD Check Valves?

P

pookstreet

Registered Stick Killer
Just curious, has anyone ever used the 3/4" or 1" check valves that are sold at HD? Good or bad experience? Thanks.
 
BAD BAD BAD!!! They are spring loaded, and the spring rusts in saltwater. Pay the 20bux and get the acrylic ones from MD.
 
Only the check valves with the flapper are suitable for saltwater. Even if the valve from HD were SW friendly it still takes too much pressure to open.
 
Thanks for the input everyone.

Now, does anyone have a 3/4" check valve they don't need? :D I can trade you SPS, LPS, or softies for it.
 
<a href=showthread.php?s=&postid=7111059#post7111059 target=_blank>Originally posted</a> by pookstreet
Thanks for the input everyone.

Now, does anyone have a 3/4" check valve they don't need? :D I can trade you SPS, LPS, or softies for it.
Click to expand...
No, but if you order from MD you'll probably have it tomorrow. I don't trust parts like that when they are already used. I've had them stick open after a year's use and they don't clean easily. Save yourself the headache and buy it new.
 
IME with check valves from HD they last for about a week, ya about a week, both went same time.

Do the acrylic kind slow the flow as much as the HD POS's ?
 
The MD valves also use a spring . They have a flap . Where as the HD are spring loaded plug. Marine depot advertises the one with the unions as easy to disassemble and cleaning of "spring".
Better design i would imagine.
 
Kenny,
I hope your not going to count on these check valves when the power fails. Their probably an ok thing to have but there's no way I'd count on em on my tank.
 
<a href=showthread.php?s=&postid=7113529#post7113529 target=_blank>Originally posted</a> by jarhed
Pook, would you like me to pick you one up from MD tomorrow? I live in Fontucky. I work in Irvine.
Click to expand...

jarhed,

Thanks for the offer. I may just take you up on your offer. I don't need it right away so I'll let you know when I do. Thanks again.
 
<a href=showthread.php?s=&postid=7118708#post7118708 target=_blank>Originally posted</a> by golfish
Kenny,
I hope your not going to count on these check valves when the power fails. Their probably an ok thing to have but there's no way I'd count on em on my tank.
Click to expand...

Mark,

Are you referring to all check valves in general or just the HD ones? I need something on my sump return. Unfortunately, it's already part of my tank that I can't change.
 
<a href=showthread.php?s=&postid=7118743#post7118743 target=_blank>Originally posted</a> by pookstreet
Mark,

Are you referring to all check valves in general or just the HD ones? I need something on my sump return. Unfortunately, it's already part of my tank that I can't change.
Click to expand...
It is a good idea to have the check valve but they are prone to fail, to prevent syphon back drill a small hole in the return line right below the water level in the main tank, the hole will break syphon in case the check valve fails. You can do without the check valve and only with the hole but the check will prevent an empty line every time the pump is turned off and the resulting bubbles back in the tank when the pump starts with an empty line.
18470Drain.jpg
 
Kenny,
Their all going to fail sooner or later. It will get some Ca or algea build up on it and leak by. I can see using one to stop the water during WC and such but I wouldn't use it for a power outage. I don't care how good it is. I've worked with these things for year, they all fail sooner or later.

Is there a reason you can't drill a hole for a siphon break?
 
<a href=showthread.php?s=&postid=7118799#post7118799 target=_blank>Originally posted</a> by golfish
Kenny,
Their all going to fail sooner or later. It will get some Ca or algea build up on it and leak by. I can see using one to stop the water during WC and such but I wouldn't use it for a power outage. I don't care how good it is. I've worked with these things for year, they all fail sooner or later.

Is there a reason you can't drill a hole for a siphon break?
Click to expand...
I agree with this 100%
 
Thanks for all the advice everyone. I thought about drilling a hole for siphon break but the return is about 2" below the water surface. Hopefully the sump I am putting in will have enough room to hold that much water should there be a power failure. I might get a check valve anyways to help with WCs.
 
What you want is a swing check valve, not a spring check. Spring check operate with a certain pressure that you preset. If you want one, you should go to my website, and I can hook you up with any kind you want for cheaper than MD, HD, etc.
 
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