• Overview
  • Specifications
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Overview

Cameron GROVE BT1 top-entry ball valves are an advanced design 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.

Specifications

Standard features
  • Size range: 1/2 to 12 in
  • ANSI classes: 150 to 1500
  • Trunnion-mounted design
  • Triple-barrier stem seals
  • Antiblowout stem design
  • Stem emergency grease fitting
  • Factory-positioned external stops for a permanent reference to open and closed positions
  • Low-friction, metal-backed, self-lubricating PTFE sleeve bearings and thrust washers
  • Plastic polymer insert for seat sealing
  • 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
  • Electroless nickel coating on pressure-controlling parts and stem
  • Body thickness in accordance with ASME B16.34
  • Inline repairability
  • 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
  • Stainless steel or INCONEL 625 overlay on sealing areas
  • Explosive decompression-resistant seals (standard for Class 600 and higher)
  • Antistatic device
  • Features to allow vertical installation and maintenance
Standards compliance
  • 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
  • Bonnet removal from valve allows free access to the ball and the seats, which can simultaneously be taken out without the need for any special maintenance tools
  • Seating surface integrity can be assessed by pressurizing only 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