The Pump Open Sub (POS) can serve as a temporary barrier when assembled with an appropriate ME plug.
Product Features
•ISO 14310 qualified
•Allows temporary barrier
•Opens at predetermined differential pressure
•The 4.20in POS has the option of remote equalisation, enabling production/injection (when open)
Download Data Sheet:
http://www.interwell.com/getfile.php/Bilder/New%20Web%20Product%20Sheets/Product%20Sheet%20POS%281%29.pdf
Link:
http://www.interwell.com/pump-open-sub/category696.html