• Overview
  • Specifications
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GROVE BT2 top-entry ball valves are manufactured in a wide range of diameters and pressure classes. In the standard versions, the valve is suitable for transmission pipelines, pumping, compression and reinjection units, offshore platforms, onshore terminals, pig traps, measuring stations, and surge-relief skids. Whenever ball valves are used in critical service applications, in situ field repairability with quick turnaround often is needed.


Standard features

  • Size range: 1 1/2 to 60 in
  • ANSI classes: 150 to 2500
  • Trunnion-mounted design
  • Triple-barrier stem seals
  • Antiblowout stem design
  • Stem emergency grease fitting
  • Low-friction, metal-backed, self-lubricating PTFE sleeve bearings and thrust washers
  • Primary metal-to-metal seal and protected secondary O-ring seal
  • Double-piston effect seat rings (double-sealing barrier in both directions)
  • Double block-and-bleed capability
  • Pressure-relief valve in the body cavity to prevent pressure lock
  • Sealant injection system for emergency seal
  • Factory-positioned external stops
  • Integral stop in the adapter plate for a permanent reference to open and closed positions
  • Electroless nickel coating on pressure-controlling parts and stem
  • Inline repairable
  • CE marking (PED)

Optional features

  • Self-relieving seat rings
  • Lubricated seats
  • PTFE spring-energized lip seals for seat and stem sealing
  • Metal-to-metal seat sealing
  • INCONEL 625 overlay on sealing areas
  • Explosive decompression-resistant seals (standard for Class 600 and higher)
  • Antistatic device
  • Features for vertical installation and maintenance

Standards compliance

  • Body thickness in accordance with ASME B16.34
  • Fire safe in accordance with API Specification 6FA and BS 6755 Part 2

Body construction

  • Body bonnet design features bolted construction, and its sizing complies with requirements given in ASME VIII Div. 1
  • Bolted construction allows inline disassembly for inspections and potential repairs
  • Removing the bonnet from the valve enables free access to the body cavity; a set of special maintenance tools permits the seats to be pushed back to remove either the ball or seats
  • After maintenance, seating surface integrity can be assessed by pressurizing the body cavity before any repressurization of the pipeline (standard DPE design)
  • Body drain provided in the lowest part of the body cavity featuring an NPT drain valve with a safety plug