Boiler Pressure Relief Valve Position

Discussion in 'UPC Plumbing Code Questions' started by Engine1, Jan 17, 2012.

  1. Engine1

    Engine1 New Member

    Messages:
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    Location:
    New England
    Is it written that a 30PSI residential hot water boiler pressure relief valve must be mounted upright, or is horizontal OK?

    I've read that the weight of the lever plays a role in the tension on the spring, and am confuzzled as to certifications. I've got one that's professionally installed sideways on a "T" that comes out the supply side of the boiler, and the plumber tells me it's fine and won't come back. As it's a safety device, we're concerned.
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