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美國(guó)UE-54系列壓力開(kāi)關(guān)-適合于OEM的節(jié)能型壓力、溫度開(kāi)關(guān)-安裝與維護(hù)說(shuō)明(英文)

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GENERAL
The J54 is a compact sprinkler switch designed to actuate
alarms in either wet or dry pipe sprinkler systems. The J54A
is a dual switch version of the J54.
The pressure switches are intended for either alarm or super-
visory service. Each consists of a diaphragm pressure cap-
sule connected to a plunger which moves in response to
pressure changes, operating a snap switch for signal initia-
tion.
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