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Tigerstop anti-siphon valve

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seized123
seized123 Member Posts: 297
Anybody ever use these? 

https://www.beckettcorp.com/product/tigerstop-anti-siphon-valve-s224-2/

I like that they can go at the tank top (I think), and are good for up to B20 biofuel.

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  • HVACNUT
    HVACNUT Member Posts: 5,870
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    It's an OSV, oil safety valve. That looks adjustable which I don't know if I like. People like to touch things they shouldn't be touching.
  • seized123
    seized123 Member Posts: 297
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    Good point, another possibility is this:
    https://www.preferred-mfg.com/products/fuel-handling/fuel-oil-components/valves/anti-syphon-valves.html

    I’m guessing from the description that you tell them the height, and they send it preadjusted, eliminating the problem you mentioned. But a guy at Sid Harvey said these Preferred Utilities cost $450 two years ago, so probably $500-600 now? (!) 

    There might be other brands out there, but I have no idea which are reputable. Any suggestions? SUNTEC’s PRV-38 can’t go higher than than 3 ft above burner, so won’t protect above that, also it’s no good for > 5% biofuel - and they passed a law in NYS that heating oil has to be > 5%!

    Any other brand suggestions welcome.

    No tech around here so far seems to know anything about these things. It surprises me that they’re not standard, given the possibly devastating impact of a leak.
  • PatN
    PatN Member Posts: 19
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    This works on top or bottom of tank

    Inlet pressure........... 1.75 Psi (12.065 KPa)
    Temperature range.. -13F - 100F (-25C - 38C)
    Fuel........................... No. 2 or lighter
    Maximum Flow.......... 46.67 GPH (210 L/H)
    Operating Vacuum Range.. 2.8 In Hg - 10 In Hg
    (9.481 KPa - 33.863 KPahttp://

    www.haseloh.ca/oil-safety-valve.html
  • seized123
    seized123 Member Posts: 297
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    That’s very interesting. Apparently it goes inside the tank.

    Ever install one?
  • PatN
    PatN Member Posts: 19
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    The tank is outside in Suffolk county Long Island. It sits approximately ten feet above the burner and fifteen feet away. It pulls a steady nine to ten inches of vacuum. It was installed June 2022. So far so good.
  • Robert O'Brien
    Robert O'Brien Member Posts: 3,542
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    Anti syphon valves just stop gravity flow, OSV's do that plus function as a pressure reducer
    To learn more about this professional, click here to visit their ad in Find A Contractor.
  • seized123
    seized123 Member Posts: 297
    edited July 2023
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    Nice @PatN, doesn’t look hard to install. That would cover the entire line.

    I think I saw in their literature that you have to install a deaerator with the Haseloh. I was inclining away from putting in a Tigerloop, but with this added protection I would do it. 

    Do you have a TL or equivalent to go with the Haseloh?
  • PatN
    PatN Member Posts: 19
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    AIR IQ Oil De-Aerator, B100 Compatible.
  • seized123
    seized123 Member Posts: 297
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    Interesting, thanks. Might end up getting both of these.
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,721
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    Imagine that. People worry about return line leaks on a two pipe system but overhead lines and piping coming out the top of a tank or the bottom is apparently causes no hazard from a damaged oil line....until now
  • seized123
    seized123 Member Posts: 297
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    @PatN and @EBEBRATT-Ed and anyone else who's reading this: I just called the people who make the Haseloh OSV anti-siphon valve you mentioned, and the guy who answered the phone is the inventor and manufacturer, and he spent a bunch of time answering my questions. (Okay, I know what you're thinking, if the inventor answers the phone, what kind of operation is this, but it sounds like a legit smaller company with legit products, and they have been making them for some time now.) He definitely sold me on their anti-siphon valve, as did the dealer I called right after (both are in Canada).

    PatN you laid out the specs, and this sounds like exactly what I've been searching for (fruitlessly, until now). It goes inside the tank at the bushing, so it will cover a leak anywhere from there to the burner. It will work with any drop from tank top to burner up to about 12', without adjustment (you raised that issue, @HVACNUT, and that made me think twice about the Tigerstop). It has a manual override. It does require a de-aerator, but that's no problem, and they'll part with the valve for $175, which seems to me very cheap insurance in case of a rupture.

    Frankly, ever since I found out homeowner's insurance won't cover oil spills (except in Massachussets) I have even been thinking of moving on from oil (to minisplits possibly with electric baseboard backup?) just to not have to worry about some undetected pinhole or some rupture bankrupting me. Maybe I'm naive but this valve changes the equation for me. I'm just a homeowner, not a pro, but from what I hear it's beyond me why everyone doesn't have something like this.
  • seized123
    seized123 Member Posts: 297
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    @PatN the Haseloh valve is on its way to me along with the adaptor. I was wondering why you got the MITCO de-aerator instead of the usual Tigerloop. I'm thinking of getting the MITCO, especially the one with the filter and built-in shutoff valve (that valve's in addition to a Firomatic).

    They seem kind of hard to get though, so also wondering where you got it. Sid Harvey seems to offer them but I'm not a contractor. Other than that it seems like mostly big drop-shipping companies with bad reviews, I called MITCO but they keep saying all lines busy (I think it's a small company). Just thought I'd ask, thanks.
  • PatN
    PatN Member Posts: 19
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    Try Patriot supply. I like it because the tiger loop has a metallic dome . I like to see the fuel
    https://www.patriot-supply.com/search_new.cfm?old_search=oil+dearator&q=p131-53m&button=
  • seized123
    seized123 Member Posts: 297
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    Thanks, I’ll try Patriot.