DIDLINK 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. DIDLINK Double Expanding Gate valves in One piece uni-body with the following features: » Manufactured under ISO 9001:2008 Management System, with CE PED & API 6D Certified » Standards compliance to API 6d, API6Aor equivalents » Flanged Ends precised to international standards ASME B16.5, BS EN 1092, BS4504 » Rising Stem and Non Rising Handwheel » Optional Locking Device or Stem Extension » Solid or Flexible wedge options » Bolted Bonnet or Pressure Sealed Bonnet » Soft seated or metal-seated » Optional Locking Device or Stem Extension » Optional Direct Mounting to ISO 5211 » Full Port design » NACE MR-01-75 We can always satisfy our respected customers with our good quality, good price and good service due to we are more professional and more hard-working and do it in cost-effective way for Discount Price China Through Conduit Double Expanding Gate Valves, It is our wonderful honor to satisfy your needs. We sincerely hope we are able to cooperate along with you from the in the vicinity of future.  Discount Price China Cast Steel Gate Valves,  Low Temperature Gate Valve, We've got been in operation for more than 10 years. We are dedicated to quality products and consumer support.We currently own 27 product utility and design patents. We invite you to visit our company for a personalised tour and advanced business guidance.