Thank you Mike. I called again, and your email to your tech support made it a smooth operation. Though I was originally told that part wasn't available separate from the unit, they agreed to send one out to me.

Thanks again,


On 10/14/2016 7:47 AM, Mike Henke wrote:


Did you call Potter’s tech support?

We routinely, at no charge, send out parts and pieces of products that are allowed to be field replaced.

If all you need is the 1” male threaded part of the VSR-ST, call our tech Support at; 1-866-956-1211 and tell them you need the plastic bushing for the VSR-ST, our part # 5180205. They should be willing to send it at no charge.

Kind Regards,


*Mike Henke CET*

Sprinkler Product Manager


Potter Electric Signal Company, LLC

1609 Park 370 Place, St. Louis, MO 63042

phone: 800-325-3936   |   direct: 314-595-6740 <> | <>

*From:*Sprinklerforum [] *On Behalf Of *Barry Levine
*Sent:* Friday, October 14, 2016 8:40 AM
*Subject:* Re: Seeking false water flow alarm suggestions

Does anyone have a spare 1" male threaded part for the Potter VSR-ST union? I have access to the rest of the switch, but the part needed to screw into my pipe is missing.

I'm sure someone has run across a non-operational Potter VSR-ST and is willing to sell me the union piece I am missing, rather than just throw the entire switch in the trash. I wish the manufacturer would sell parts, but they don't. I'm even willing to buy a used part, as long as it is still in good condition. I care about functionality, not looks. I appreciate any help anyone can offer.

On 10/12/2016 10:57 AM, rongreenman . wrote:

    You'd need a hydro pump to overpressure your system but although
    your switch is doing what it should as mentioned, that switch does
    not have a built in time delay according to earlier reply.
    Changing it to one with a time delay would solve the problem. But
    why not just disconnect it. The is no requirement in 13d for an
    audible alarm or monitoring.

    On Wednesday, October 12, 2016, Barry Levine <
    <>> wrote:

    I assume attaching a water hose to my test valve wouldn't help, as
    the pressure from inside and outside would be the same. How do you
    suggest I add pressure to my system?

    On 10/12/2016 9:52 AM, Steele, Andrew wrote:

        I've heard of contractors pumping up sprinkler systems a few
        lbs over domestic supply, rather than leaving the sprinkler at
        supply pressure,  so there is no subsequent flow alarm after
        running an Inspectors test.

        For example, our City water pressure trends up in the very
        late hours, then down as daytime usage increases. This is
        about a five to eight pound change, sometimes it's enough to
        cause systems with failed check valves and short flow
        detection cycles, to alarm.

        On Oct 12, 2016 8:38 AM, "Steele, Andrew"

        Check valve failure, so that the sprinkler leg is no longer

        -----Original Message-----
        From: Sprinklerforum
        On Behalf Of Barry Levine
        Sent: Wednesday, October 12, 2016 1:01 AM
        Subject: Seeking false water flow alarm suggestions

        I drained all the water from my pipes when I installed a new
        water filter/softener system in my home. After installing the
        new system, which replaced some 3/4" pipe with 1" pipe in my
        home water system, I have been getting false alarms from my
        Potter Electric Signal Co VS-SP flow sensor. I flushed my
        sprinkler system using the drain and the test valve, yet I
        believe some air pockets may still remain in my two areas of
        coffered ceilings, where the sprinklers sit 1 foot above the
        rest of the system. Potter recommends replacing the VS-SP with
        a VSR-ST. I'd prefer not spending the money to replace the
        sensor, but I'd like to hear from the professionals before I
        make that decision. I'm thinking there may be other solutions,
        especially since I never had any false alarms during the
        previous 20+ years. Possibly I could attach saddle valves
        between each of the two sprinklers in the two coffered
        ceilings and bleed the air out. Unfortunately, I've never had
        any long-term luck with saddle valves, as they have all become
        inoperative over time. I've attached a photo of my water
        system in case that might be helpful. Feel free to ask any
        questions or offer any solutions. Thank you.

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