API 6D Gate Valve

Forum’s PBV® through conduit valves (6D gate valves) are engineered to use line pressure force for tight mechanical sealing on the upstream side when high differential pressure occurs. Internal springs achieve low-pressure sealing as they help push seat rings against the gates.

These bi-directional, double block-and-bleed slab gate valves are through conduit, piggable and top entry. Suitable for transportation pipelines for gas, crude oil and oil products, all valves are available in a variety of materials and configurations to meet your project requirements.

  • Chevron-style polytetrafluoroethylene (PTFE) packing for long-lasting, trouble-free stem sealing
  • Seats to ensure low- and high-pressure sealing and body cavity self-relief
  • Stem injection fitting for secondary sealing
  • Smooth, electroless nickel-plated slab for bubble-tight sealing and low operating torque
  • Seat injection fitting with internal check valve for emergency sealing
  • Drain valve for block-and-bleed function and seat integrity verification
  • Valve serialization for complete traceability
  • Stem design with internal stops to prevent over-track of slab (no adjustments required)
  • Secondary metal-to-metal sealing for fire-safe requirements
  • Full bore, through conduit, bi-directional flow
  • Product range: two to 24 inches
  • Full port
  • Pressure class: American National Standards Institute (ANSI) 150, 300, 600
  • Flange standards: American Society of Mechanical Engineers/ANSI B16.5, B16.47
  • Face-to-face dimensions meet American Petroleum Institute (API) 6D standards
  • Basic designs, inspections and testing also meet API 6D standards
  • Fire testing to API 6FA standards
  • National Association of Corrosion Engineers-compliant nuts and studs (MR0175 2015)