Two valves in one line

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peter1969
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Joined: Fri 12 Mar, 2021 11:15

Two valves in one line

Postby peter1969 » Fri 12 Mar, 2021 11:19

Hi, I have a check valve and spring valve in the outlet line coming to hottub. Is it necessary to have two valves preventing backflow? I think one valve would be enough. My concern is that two valves make significant resistance to water flow, so pump and filtering are not as effective as they can be with just one valve.


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Teapot
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Pool Industry Leader
Posts: 1337
Joined: Tue 17 Oct, 2017 10:52
My Pool: 12 x 24 (45m3) liner pool, Triton TR60 filter with AFM glass media (Activate) and variable speed pump running 0.08HP
Location: UK

Re: Two valves in one line

Postby Teapot » Sat 13 Mar, 2021 02:02

You are correct
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