GROVE B4 Side-Entry Ball Valve | Schlumberger
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GROVE B4

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The B4 valve is constructed of forged components bolted together in a side-entry design. The standard designs are ideal for transmission and standard production operations. This design also allows for specialty configurations required in applications such as subsea installation and LNG plants.

Standard features

  • Size: 1 1/2- to 4 in
  • ANSI classes: 150 to 1500
  • Double-barrier stem seals, the upper of which can be replaced with the valve in line, under pressure, and with the ball in the closed position
  • Factory-positioned external stops
  • Fire-safe graphite rings for protection against external leakage
  • Metal-backed, self-lubricating PTFE sleeve bearing and thrust washers that reduce torque and extend service life
  • Nickel plating for trim parts
  • Plastic polymer insert for seat sealing
  • Self-relieving seats qualified for ASME Classes 150 and 300
  • Short coupled trunnions that reduce unit bearing loads and operating torque
  • Stem that is separated from the ball, delivering an antiblowout design
Cutaway of a B4 side-entry ball valve
Cutaway of a B4 side-entry ball valve

Options

  • Antistatic device
  • Double block-and-bleed capabilities
  • Double-sealing barrier in both directions for ASME Classes 600, 900, and 1500; body relief valve for overpressure due to liquid thermal expansion
  • Explosive decompression-resistant seal
  • Metal-to-metal seats
  • Various grades of PTFE for stem and seat sealing

Standards compliance

  • Fire-safe in accordance with API Specs 6FA and BS 6755 Part 2

Body construction

  • Three forged parts and bolted construction allow disassembly onsite for inspections and potential repairs
  • Body drain located in the lowest part of the body cavity, consisting of a 1/4-in NPT drain valve with safety plug
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