DDHF Series Horizontal Multistage Centrifugal Pumps

For Severe Applications

The DDHF series of pumps features a cylindrical outer barrel enclosing a horizontally split inner volute-case. Designed to handle liquid at high pressure, elevated temperatures and low specific gravity, the pumps are particularly suitable for severe applications such as hydrocracking and ammonia charging. Applications include water injection (upstream) and refinery processes (downstream).

Features & Benefits

Design
  • Double case designed for high pressure and temperature
  • Back-to-back impeller configuration
  • Stuffing boxes designed for API 682 mechanical seals
  • Axially split inner case and case wear rings for easy balancing
Performance
  • Capacity range: up to 6,600 gpm (1,500 m³/h)
  • Total differential head: up to 11,500 ft (3,500 m)
  • Maximum working pressure: 350 bar (5,000 psi)
  • Maximum speed: 10,000 rpm
  • Maximum operating temperature: 800 °F (430 °C)

Centrifugal Pumps

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