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    Default Tank to Pump Check Valve - Anyone know it's first year in NFPA 1901?

    Title pretty much says it all.

    I learned to pump on a 71' American LaFrance, and I don't recall it having one. Anyone know what year these started showing up in the NFPA regs?
    The American people will never knowingly adopt Socialism. But under the name of 'liberalism' they will adopt every fragment of the Socialist program, until one day America will be a Socialist nation, without knowing how it happened. --Norman Mattoon Thomas, 6 time presidential candidate for the Socialist Party of America


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    Quote Originally Posted by txgp17 View Post
    Title pretty much says it all.

    I learned to pump on a 71' American LaFrance, and I don't recall it having one. Anyone know what year these started showing up in the NFPA regs?
    I believe they became required in the 1991 revision of NFPA 1901. Most pump manufacturers had them available long before that. I know we began offering them on our midship pumps in 1968 at Waterous.
    Just a guy...

    Lieutenant - Woodbury, MN FD (Retired)
    Road Captain - Red Knights MC, MN4

    Disclaimer: The facts and opinions expressed above are mine, and mine alone, and are not intended to represent the views of any company I have ever worked for, past or present.

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    Quote Originally Posted by Johngagemn View Post
    I believe they became required in the 1991 revision of NFPA 1901. Most pump manufacturers had them available long before that. I know we began offering them on our midship pumps in 1968 at Waterous.
    Might have been in the next revision. We have a 94' in our inventory and I spoke with one of the operators, she said it has no check valve on the P2T line.
    The American people will never knowingly adopt Socialism. But under the name of 'liberalism' they will adopt every fragment of the Socialist program, until one day America will be a Socialist nation, without knowing how it happened. --Norman Mattoon Thomas, 6 time presidential candidate for the Socialist Party of America

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    Quote Originally Posted by txgp17 View Post
    Might have been in the next revision. We have a 94' in our inventory and I spoke with one of the operators, she said it has no check valve on the P2T line.
    Some of these check valves are right inside the pump casing, and not in the piping. Unless you knew the pump had one its basically invisible.

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    Quote Originally Posted by MG3610 View Post
    Some of these check valves are right inside the pump casing, and not in the piping. Unless you knew the pump had one its basically invisible.
    Right, if I'm not mistaken the Hale Q-Max is integrated into the manifold. However, the person commenting on that particular truck, described filling the tank through the P2T line, not a visual inspection.
    The American people will never knowingly adopt Socialism. But under the name of 'liberalism' they will adopt every fragment of the Socialist program, until one day America will be a Socialist nation, without knowing how it happened. --Norman Mattoon Thomas, 6 time presidential candidate for the Socialist Party of America

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    Quote Originally Posted by txgp17 View Post
    Right, if I'm not mistaken the Hale Q-Max is integrated into the manifold. However, the person commenting on that particular truck, described filling the tank through the P2T line, not a visual inspection.
    And THAT would pretty much negate it having a check valve,hehe T.C.

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    Seems we had some 1987 ALF's with the check valve in the tank to pump piping. I don't think we would have asked for it, so I think it was required.

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    Quote Originally Posted by LFD2203 View Post
    Seems we had some 1987 ALF's with the check valve in the tank to pump piping. I don't think we would have asked for it, so I think it was required.
    I'd venture to say that the ALF of 1987 included it on their own. The original ALF was a fairly high-end manufacturer, who didn't produce much junk.

    I was born & raised on a 71' & 82' ALF's on Ford commercial chassis, both with gas engines, manual transmissions, and 2-stage pumps. It really makes you appreciate a modern diesel/automatic with a single stage/governor combination.
    The American people will never knowingly adopt Socialism. But under the name of 'liberalism' they will adopt every fragment of the Socialist program, until one day America will be a Socialist nation, without knowing how it happened. --Norman Mattoon Thomas, 6 time presidential candidate for the Socialist Party of America

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    Quote Originally Posted by txgp17 View Post
    Might have been in the next revision. We have a 94' in our inventory and I spoke with one of the operators, she said it has no check valve on the P2T line.
    It definitely was the 1991 edition. The 1985 edition only states that "When specified by the purchaser in Special Provisions, a check valve shall be provided in the tank-to-pump line".

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    Quote Originally Posted by txgp17 View Post
    I'd venture to say that the ALF of 1987 included it on their own. The original ALF was a fairly high-end manufacturer, who didn't produce much junk.

    I was born & raised on a 71' & 82' ALF's on Ford commercial chassis, both with gas engines, manual transmissions, and 2-stage pumps. It really makes you appreciate a modern diesel/automatic with a single stage/governor combination.
    These were poorly designed/spec'd apparatus anyway. On Ford L-9000 chassis, underpowered, under braked, had 1,000 gal tanks with 3/4" tank fill lines. I feel certain the check valve caught us by suprise as previous apparatus could "back fill" through the tank to pump piping. These were supposed to be our big leap into rural fire protection.........not a lot of help.

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