S-3000 INTERNAL DOOR QUICK OPENING CLOSURE - Brochure

The S-3000 is Stark’s Internal Door design which is manufactured in diameters ranging from 6” to 84” (DN150 to DN2100). The closure design concept relies on the proven method of a locking ring that slides into the closures outer hub. When expanded to the closed position, the locking ring assembly securely latches the door into place. Durable components are used to actuate the locking ring and are designed to withstand the demands of long-term operation. Depending on size and pressure, Internal Door closures may come with an O-Ring, or Lipseal. Lipseal designs are identified as S-3000L.