Large Gate Valve

Large Pipelines have their unique challenges. To someone outside the industry, the concept of a 96” diameter valve might be overwhelming.

What is a Large Gate Valve?

There are no off-the-shelf solutions to large valve requirements. Anything greater than 36” is a specification within itself. Different applications, different service demands. All dictating special design considerations – even if they are being made for the same market. The sheer size adds another unique set of complexities to the design and manufacturing of large valves. Engineered Valves has the knowledge, experience, and facilities to be your source for reliable ZECO Valve large valves.

The large Gate Valve series is designed for reliable isolation in applications requiring extra-large dimensions, such as space simulation applications. The series is designed for up to DN 2400 mm (96″) but is available in larger sizes upon request.

All valves in the Large Gate Valve series address the standard requirements of reliability, durability, and serviceability with a special focus on high uptime and low cost of ownership.

The resilient seated gate valve mainly comprises the valve body, rubber-lined elastic gate plate, valve stem, and valve cover seals. The resilient seated gate valve surface and the flow channel side valve wall are plastic spray electrostatic powder. Not only has the appearance of the beautiful, more important flow channel and the smooth inner valve will ensure that the rubber lining gate will not be affected by the rough inner valve wall when opening and closing.

Features of Large Knife Gate Valve

  • Robust construction
  • Low profile design
  • Low operating torque
  • Custom fabrication available
  • Body:
    • Fabricated carbon steel lined with either 304, 316 or 316L
  • Seats:
    • 316 Stainless Steel
    • EPDM resilient

Features of Large Gate Valve with Resilient Seat

  • GGG50 / DI GJS500-7 body, bonnet, and gate cast with progressive foundry technology for high strength.
  • More stiffening ribs are distributed reasonably to make them solidly built.
  • The integrated design stems with high strength and durability.
  • The wedge is fully vulcanized with WRAS-approved EPDM for drinking water.
  • Wedge with central guides to avoid rubber friction when operating.
  • Internally and externally coated with fusion-bonded epoxy (FBE).
  • A full and straight bore avoids turbulence, pressure loss, and venturi effect.
  • The back seal design allows for the replacement of stem seals under operating pressure.
  • The stem nut is separated from the wedge to avoid seizing up.
  • The unique gland seal design is different from most manufacturers.
Body Ductile iron With Coating Fusion Bonded Epoxy(min.250um)
Disc Ductile iron+EPDM
Shaft SS 316
Stem Nut Bronze
Pressure PN16
Connection Flanged
Operate Gear
Large Diameter Gate Valve – DN1200 specification

ZECO valve is a professional large gate valve manufacturer since 1991 and has maintained a good relationship between customers and suppliers.

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