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    Need for 2nd Check Valve between Rainbow 320 and heater?

    Thank you for the advice. I approved the install. Just seemed a little odd they didn’t catch it when they installed the heater to begin with.
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    Need for 2nd Check Valve between Rainbow 320 and heater?

    i have a check valve (circled in yellow) My understanding is he proposes to put one in the pipe with blue arrow pointing at it.
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    7ADD7F91-14EC-4D6B-8B96-E50C9C9D096F.jpeg

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    Need for 2nd Check Valve between Rainbow 320 and heater?

    No the pipe he is talking about is between heater and chlorinator with water direction flowing towards chlorinator then out to pool.
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    Jandy JXI 260n Manifold for sale?

    My heater manifold cracked during the Texas freeze. I realize they are on nationwide back-order, but figured there is no harm in asking. Is anyone selling or know where I can get my hands on a Jandy JXi 200/260/400, 3 Port Manifold #R0590100? If not, does anyone know what the estimate is for...
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    Need for 2nd Check Valve between Rainbow 320 and heater?

    I have a Rainbow 320 in-line chlorinator. It already has a check valve incorporated in the bottom of it. Pool guy told me today I should have another check valve installed in the plumbing line between the chlorinator and heater to ensure chemicals do not flow into heater. After thinking about...