Forum Discussion

kptraveler's avatar
kptraveler
Explorer
Mar 16, 2020

Propane Auto Changeover

I am installing a "Mr Heater", propane Auto Changeover Two -stage Regulator. I am replacing a manual change over valve. Is it necessary to have an addtional regulator in the line between the tank farthest away from the "Mr Heater" regulator?

The orginal system had a Model GR-630 GasFlow regulator installed in the line between the tank farthest from the valve.

The picture on the package does not show any additional regulators installed.

11 Replies

  • Hondavalk's avatar
    Hondavalk
    Explorer II
    Mar 18, 2020
    BB_TX wrote:
    Hondavalk wrote:
    Lwiddis wrote:
    Sorry. I don’t use an auto change over. I want to know unmistakably that one of my tanks is empty. I switch over manually and have the empty refilled pronto.


    X2 I have an auto change over but leave 1 tank valved off until the other is empty.

    That works fine unless you enjoy cold weather camping and wake up freezing at 2 am because your tank ran empty.


    But that allows me to wake up at 2 am and open the valve to a full tank
  • BB_TX's avatar
    BB_TX
    Nomad
    Mar 17, 2020
    Hondavalk wrote:
    Lwiddis wrote:
    Sorry. I don’t use an auto change over. I want to know unmistakably that one of my tanks is empty. I switch over manually and have the empty refilled pronto.


    X2 I have an auto change over but leave 1 tank valved off until the other is empty.

    That works fine unless you enjoy cold weather camping and wake up freezing at 2 am because your tank ran empty.
  • Old-Biscuit's avatar
    Old-Biscuit
    Explorer III
    Mar 17, 2020
    kptraveler wrote:
    Thank you to all who have replyed.
    My regulator, Model GR-630 GasFlow, is releasing pressure through the vent hole. Should I replace it or is there something else I should look for.
    Thanks for the education on regulating pressure in the "off side" clylinder line.


    Your regulator Diaphragm has failed...cracked/torn etc
    Vent hole is on 'atmosphere' side of diaphragm which allows for operation of regulator
    LP coming out of vent hole.....regulator has failed
  • Hondavalk's avatar
    Hondavalk
    Explorer II
    Mar 17, 2020
    Lwiddis wrote:
    Sorry. I don’t use an auto change over. I want to know unmistakably that one of my tanks is empty. I switch over manually and have the empty refilled pronto.


    X2 I have an auto change over but leave 1 tank valved off until the other is empty.
  • BB_TX's avatar
    BB_TX
    Nomad
    Mar 17, 2020
    The pressure regulator should not leak. Here is the one I replaced my leaking regulator with.

    regulator
  • kptraveler's avatar
    kptraveler
    Explorer
    Mar 17, 2020
    Thank you to all who have replyed.
    My regulator, Model GR-630 GasFlow, is releasing pressure through the vent hole. Should I replace it or is there something else I should look for.
    Thanks for the education on regulating pressure in the "off side" clylinder line.
  • Old-Biscuit's avatar
    Old-Biscuit
    Explorer III
    Mar 17, 2020
    The NFPA Regulation is because High Pressure Propane Vapor CAN condense into LIQUID Propane when it sits in long lines/hoses.
    Liquid Propane will destroy regulators and appliance gas valves


    Hence the 30# Single Stage Reg at 'off-side' cylinder.....drop the clyinder pressure which can be 100#--250# depending on temperatures
  • Lwiddis's avatar
    Lwiddis
    Explorer II
    Mar 17, 2020
    Sorry. I don’t use an auto change over. I want to know unmistakably that one of my tanks is empty. I switch over manually and have the empty refilled pronto.
  • time2roll's avatar
    time2roll
    Nomad
    Mar 17, 2020
    Yes it is necessary if you want to be safe and comply with code.

    BTW how did you end up in the "Forum Posting Help" section?

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