Series DM Demco Gate Valves | SLB

Series DM Demco

Gate valves

a set of three DEMCO gate valves in the field

Series DM Demco™ gate valves are the premier gate valves in the oil and gas drilling industry. Specifically engineered for the rigorous demands of abrasive applications, they have been the premium drilling mud valve of choice for more than 40 years.

Sizes: 2 in to 5 1/8 in
Pressures: Available with ratings of 5,000 psi, 7,500 psi, and 10,000 psi
  • Automated MPD systems
  • Pump-manifold block valves
  • High-pressure mud mixing lines
  • Standpipe manifolds
  • High-pressure drilling system block valves
  • Wellheads
  • Well treating and hydraulic fracturing services
  • Production manifolds, gathering systems, and flowlines

Series DM Demco gate valves feature a heavy-duty seat design with wear rings for an extended service life in abrasive drilling applications. The top-entry design together with the gate and seat configuration facilitate inline repairs. Multiple end connection options ensure adaptability with a wide range of rig configurations.

  • Rising stem with visual position indicator lens
  • Floating slab gate design
  • Threaded, buttweld, and flanged end connections
  • Top entry
  • Automation option with Demco DMA™ automated gate valves