glynn johnson pneumatic adjustable tension

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 Pneumatic Automatic Operators are used in areas where electrically operated devices are not convenient or permitted.  Consists of a modified, heavy-duty door closer for manual oper...
The maximum 925 tubing run length from the Control Box to the Door Closer is:  7980 Series Control Boxes --- 50 "Linear" feet from Control Box to Door Closer.  7900/7940 Series Control Boxes --...
The Von Duprin Pneumatic PN98/99 series exit devices feature provides remote latch bolt retraction in hazardous areas where electrically operated devices would not be permitted.
The Von Duprin Pneumatic or "PN" device was designed for Intrinsically Safe Class 1, Division 1 applications.The device does not have a specific listing or certification pertaining to hazardous loc...
PN33/35/98/99 Pneumatic exit devices are not usually used with RX or LX switches since the Pneumatic PN device is used instead EL to eliminate the electric from the device.