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WTB :Check Valves


surfedelic
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I am currently looking for check valves. Come across those ball type - and was quoted 20 bucks for one. Anybody using this ? and how reliable are they.

It would be great if you could share with me where you got them and for how much.

Thanks in advance.

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I am currently looking for check valves. Come across those ball type - and was quoted 20 bucks for one. Anybody using this ? and how reliable are they.

It would be great if you could share with me where you got them and for how much.

Thanks in advance.

pvc or brass?

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hihi

Anyone know when using a checkvalve, how many percent of the flow from return pump to main tank is reduced?

And what type of good checkvalve available ( price and where to get them).

I have seen OB selling those pvc ones at $6-10..are they good?

:thanks:

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The water from the pump has to push against either a spring or a weight so that in event of pump failure or off in purpose then the spring/weight return to normal position to close the valve. Further, if you look closely at the internal channel of a Y-check, it is angled, so more head loss.

Best is to avoid it if possible and they do not give a perfect fit after some time due to slime coating of the rubber gaskets.

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The water from the pump has to push against either a spring or a weight so that in event of pump failure or off in purpose then the spring/weight return to normal position to close the valve. Further, if you look closely at the internal channel of a Y-check, it is angled, so more head loss.

Best is to avoid it if possible and they do not give a perfect fit after some time due to slime coating of the rubber gaskets.

hm... i think the spring type will cause severe head loss... go for ball types but each cost 30+ bucks!

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Just call Hai Cheong, 16mm or 1/2 inch check valve (ball type) $20.50

that's the smallest size. Anyone knows is there alot of head loss with this type

of check valve , and is it better to place it further away from returm pump or nearer for min head loss

:thanks:

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i've just got two 1" ball check valve from Hxx Cxxxxx, it cost $26 each.

Have installed it for my friend, the head lost is not noticable. ;)

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Just call Hai Cheong, 16mm  or  1/2  inch  check valve (ball type)  $20.50 that's the smallest size.

Can you post the address? I also might add one to prevent backflow during power failure!!

Waste no more time arguing what a good man should be, be one.

Marcus Aurelius

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