Bridge Plug Solutions - Dual Back Pressure Valve
The Dual Back Pressure Valve is a dual flapper check valve

It is designed to minimize flow restriction in the intended flow direction, and to prevent reverse flow and seal of pressure.

This particular configuration tool has been made for use in combination with ME Packer. It may be configured in production mode or injection mode as per request.

Download Data Sheet:
http://www.interwell.com/getfile.php/Bilder/New%20Web%20Product%20Sheets/Product%20Sheet%20DBPV.pdf

Link:
http://www.interwell.com/dual-back-pressure-valve/category697.html