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Thread: Leaky Valve / Drain Down Valve Diverter Question

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    Leaky Valve / Drain Down Valve Diverter Question

    I have a traditional roof solar heater setup that has a Pentair PTV-2TS solar diverter valve with a "leak down check valve" as its called. However, it doesn't seem to always be draining back to the pool. Can someone tell me if the valve will allow for drain back from the panels even when the diverter valve is turned to bypass and the system is off? Or will it only drain back to the pool when the diverter valve is positioned to operate the solar loop?
    St, Augustine, FL / Covered Screen Enclosure
    1982 IG plaster/pebble - 18K gallon city water, Hayward C900 Cartridge Filter, Single Speed Pump 1.5hp
    Testing with TFT-100, Treated with Liquid Chlorine, Muriatic Acid, and Baking Soda

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    Mod Squad pooldv's Avatar
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    Re: Leaky Valve / Drain Down Valve Diverter Question

    It should drain back when the valve is closed and the pump is off.
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    Re: Leaky Valve / Drain Down Valve Diverter Question

    Thanks. What does "closed" mean for a diverter valve? I have an inlet from the pump and then it either goes out to the solar panels or bypasses direct to the pool. I assume the drain down is a connection between the "Solar" and "bypass" but does it drain back when the valve is in either position?

    For some reason my pool seems to be losing water when the solar panels are in use but not on a regular basis. I'm wondering if I have a small leak that only occurs when there is a head pressure on it if it is not draining back all the time.
    St, Augustine, FL / Covered Screen Enclosure
    1982 IG plaster/pebble - 18K gallon city water, Hayward C900 Cartridge Filter, Single Speed Pump 1.5hp
    Testing with TFT-100, Treated with Liquid Chlorine, Muriatic Acid, and Baking Soda

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    Mod Squad pooldv's Avatar
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    Re: Leaky Valve / Drain Down Valve Diverter Question

    Ha, good point, to me closed means solar off. The drain down part of a solar 3way valve is pinhole with a flap that allows water to flow down through the solar valve after it closes. This works in conjunction with the VRV, vacuum release valve.
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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