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.
Benefits
- 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
Features
- 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)
