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Originally Posted by Owen Makin
Can you please quote the rule, i could not find that change in the rule book. Thank you.
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There is no rule-and that's the change. If you read the 2013 manual, it's letter C of R78:
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C. Solenoid valves with a maximum 1/8 in. NPT port diameter, and a maximum Cv of 0.32,
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That's from the 2013 manual, whereas R77 (the comparable entry in this year's manual) this year states:
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Solenoid valves with a maximum 1/8 in. NPT port diameter,
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