150LB WCB Twin Seal Double Block And Bleed Plug Valve (DBBV)
EDVC Double Block and Bleed dual expanding Plug Valves (DBBV) respond to the market demand for a non friction Double tight shut-off valve. Reduced space and no maintenance requirements are met. DBBV provides 100% bubble tight sealing both up and down stream and is achieved mechanically - independent on line pressure.
Product Range:
SIZE: 1” ~ 48” (DN25 ~ DN1200) (up to unlimited based on approvals)
BORE: Reduced or Full (Full is piggable)
PRESSURE: 150# ~ 2500# (PN20 ~ PN420)
TEMPERATURE RANGE: -196°C ~ 250°C
CONNECTIONS: Wide choice on request
MATERIALS: Wide choice on reques
GENERAL VALVE Twin Seal
THE EVOLUTION OF DOUBLE BLOCK & BLEED CONTINUES...
TWIN SEAL valves, were the first to meet the rigid requirements of double block & bleed service - more than 68 years ago.
In the years since, subtle yet significant design refinements have been made to improve the valve’s performance. Superior design innovations, pride in manufacturing workmanship and the selection of the best materials, support Cameron’s commitment to excellence and complete customer satisfaction.
The TWIN SEAL replaces this antiquated two-valve system with just one double seated bubble-tight valve. The upstream and downstream seals provide the same function as the two block valves. The body (serving as a spool piece) bleed verifies seal integrity.
Scored seating segments
Seal abrasion is inherent in the design of most ball and gate valves. In most instances, the seats are ground or wedged against metal every time the valve cycles. Any foreign material lodged between the seats and ball or gate will score the seating surfaces. Once the seating segment is scored, product loss and contamination results. The TWIN SEAL avoids abrasion by having both independent slips totally retracted from the body bore during cycling.
