Accumulator - Piston - PA
Product Brand
Accumulators - Piston
About this product

The PA piston accumulator provides optimal lubrication to promote long seal life and reliability for double mechanical seals using Plan 53C piping systems in oil and gas and chemical applications. It provides a constant supply of clean, cool and pressurized barrier fluid to the faces of the dual mechanical seal. The pressure source for the barrier fluid system is the pump seal chamber. This allows the piston accumulator to track the seal chamber pressure and boost the pressure to the mechanical seal. The PA piston accumulator is optimized to have a working volume that meets API 682, 4th edition and is larger than the standard working volume for a 5-gallon API reservoir.

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  • Compliant with API 682, 4th edition
  • Designed to ASME VIII.1
  • Easy to retrofit due to compact design
  • Field repairable
  • Instrumentation options available
  • Standard design for quick delivery
  • U-stamp and PED (2014/68/EU) optional


  • API Standard 682 (4th Edition)
  • ASME BPVC Section VIII Div. 1
  • ASME B 31.3
  • Pressure Equipment Directive (PED) 2014/68/EU
  • CSA B51

Operating Parameters

  • Nominal boost ratio 1.15:1
  • MAWP 207 bar (3000 psi)
  • Max. Operating Temp. 204°C (400°F) limited by seals
  • Min. Temperature -29 °C (-20 °F) limited by seals
  • Empty weight 73 kg (160 pound)

Size Range

  • 5.6 liter (1.48 gallon) working volume

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