Through Conduit Double Expanding Gate Valves are manufactured with a full bore port and with 2-piece (gate + segment) obturator designed for a positive, bubble tight shut off upstream and downstream under both low and high differential pressure. Double block and bleed capability and high robustness are standard feature of this seat design.
The smooth, continuous bore minimizes turbulence within the valve and when in the open position it produces a pressure drop equivalent to a portion of pipe of same length and diameter. The seat faces are outside the flow stream and therefore protected from the erosive action of the flow.
Pigs and scrapers can be run through the valve without damage.
Slab Gate Valves are available in sizes and pressure ratings as follows:
•Class 150# from 2″ through 64″
•Class 300# from 2″ through 64″
•Class 600# from 2″ through 64″
•Class 900# from 2″ through 48″
•Class 1500# from 2″ through 42″
•Class 2500# from 2″ through 24″
Slab Gate valves comply with API 6D / API 6D SS and all relevant international codes:
•ASME VIII Div.1
Through Conduit Double Expanding Gate valves are manufactured using a wide range of materials, from carbon steel to alloys, in order to comply with all the possible services (Hydrocarbons, Mildly to Highly Corrosive, NACE,etc.) and applications, Mildly to Highly Corrosive, NACE, etc.) and applications.
•Double block and bleed applications
•Scrapers/Pig Traps/Pig Launchers and Receivers
•Oil and gas production/transportation isolation
•Upstream gas compressor isolation
•Critical and Primary isolation