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Thread: I have a 2in non union check valve 2lb spring, should i replace with a jandy?

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    I have a 2in non union check valve 2lb spring, should i replace with a jandy?

    Was wondering if i should replace my 2lb spring loaded check valve that is between the heater and chlorinator with a jandy check valve?

    How much better flow would i get? How much resistance is a 2lb spring check valve?

    Thanks
    15,000 gallon inground fiberglass pool with spa. 350lb Sand filter, 1.5 hp pump, and heater

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    Re: I have a 2in non union check valve 2lb spring, should i replace with a jandy?

    If yours is working properly, you wont notice a change in flow. However it should be a non corrosive check valve if its between the chlorinator and the heat pump. One like thishttps://www.yourpoolhq.com/rainbow-r...fSiRoC2GHw_wcB

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    Re: I have a 2in non union check valve 2lb spring, should i replace with a jandy?

    Thats the one i have, does the 2lb resistance effect the flow at all? Only use the chlorinator when i,m raising cya with tabs
    15,000 gallon inground fiberglass pool with spa. 350lb Sand filter, 1.5 hp pump, and heater

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    Re: I have a 2in non union check valve 2lb spring, should i replace with a jandy?

    Nothing that you would notice. And even though you only use it occasionally I would still make sure you keep the non corrosive type on there.

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    Re: I have a 2in non union check valve 2lb spring, should i replace with a jandy?

    Even though my filter/heater is about 1-2 feet higher than the pool water level?
    15,000 gallon inground fiberglass pool with spa. 350lb Sand filter, 1.5 hp pump, and heater

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    Isaac-1's Avatar
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    Re: I have a 2in non union check valve 2lb spring, should i replace with a jandy?

    Without knowing details of your plumbing setup it is hard to say the exact flow reduction, but with a 2 pound spring I suspect it is noticeable, and perhaps worthy of the effort and cost to replace. A typical pool spring type check valve will have a 1/4 to 1/2 pound spring.
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    Re: I have a 2in non union check valve 2lb spring, should i replace with a jandy?

    Found a good site for head loss to various pipes/ fittings/ valves

    Swimming Pool Feet of Head Calculations | SPP Inground Pool Kit Blog

    Head loss of 2 isnt much for a check valve.
    15,000 gallon inground fiberglass pool with spa. 350lb Sand filter, 1.5 hp pump, and heater

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