Boiler Pressure Relief Valve Position

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

  1. Engine1

    Engine1 New Member

    Jan 13, 2012
    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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