sustaining pressure control valve

Discussion in 'Open Loop' started by kelargo, Jun 11, 2011.

  1. kelargo

    kelargo New Member

    what is an appropriate sustaining pressure control valve to install on the dump side of an open loop system?
  2. waterpirate

    waterpirate Well-Known Member Industry Professional Forum Leader

    Please define pressure sustaing valve?

    Commonl a solenoid valve is installed on the discharge side of the unit. Is this what you are refferring to?
  3. kelargo

    kelargo New Member

    i think so

    This is the term the manufacturer used in their install document. I believe what you are describing is what they are referring to, solenoid valve on the egress water flow.
  4. waterpirate

    waterpirate Well-Known Member Industry Professional Forum Leader

    We have discussed this before and the general consensus is to use the valves commonly associated with lawn irrigation that are constructed out of thermo plastic, slow closing, and relativeley in expensive when compared to the cost of the valves commonly used with hydronic boilers. any big box store should have a selection that you can touch and feel prior to buying.
  5. kelargo

    kelargo New Member

    thanks. I saw some recommendations on those... Hunter ICV seemed reasonable.

    how is it controlled with the thermostat and relays in the heat pump?
    which color wires controls this valve?
  6. urthbuoy

    urthbuoy Well-Known Member Industry Professional Forum Leader

    Foot valve

    I could see potentially using a foot valve on the discharge line if you are discharging to a buried culvert or such. This would prevent the potential for some siphoning, keep air out of system, and likely eliminate a bit of noise.

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