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  1. SPKsales

    Butterfly Valve Pre-wired Tamper Switch Requirements

    Local AHJ does allow chain and lock to secure the valve wheel. Does the use of chain and lock void my question for tamper wiring? Determining if wiring the tamper switch is required might be found in building or fire code. I will search my resources, thank you for the direction.
  2. SPKsales

    Butterfly Valve Pre-wired Tamper Switch Requirements

    I believe somewhere in an NFPA book there is a clause stating my answer however I am having trouble locating it. If a Butterfly Valve with a pre wired tamper switch is installed to a wet fire sprinkler riser in place of an OS&Y valve with no existing tamper switch is it a requirement to wire...

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