Self-operated Post-valve Pressure Control Valve

The self-operated (post-valve) pressure control valve is composed of a control valve, an actuator, and a spring for setting pressure. It is suitable for non-corrosive liquids, gases, and vapors. It plays the role of post-valve pressure control in system pipelines. When the post-valve pressure rises, the control valve closes.

Control Valve Parameter Description

Trim Features

  1. Built-in bellows, with a pressure-balanced structure and high sensitivity.
  2. Compact structure, reliable performance, and maintenance-free.
  3. Adopts a standard modular design.
  4. Multiple combined controls can be performed through combination components.

Valve Body Type

  • Straight-through type

Bonnet Type

  • Standard type
  • Heat-dissipating type

Flow Characteristic

  • Quick opening

Size Range

  • DN15-300 (1/2”-12”)

Pressure Rating

  • PN1.6, 4.0Mpa (ANSI 150, 300LB)

Leakage Class

  • ASME B16.104 V (Soft seal)
  • ASME B16.104 IV (Hard seal)

Pipeline Connection

  • Flanged type

Set Pressure Deviation

  • ±8%

Applicable Temperature Range

  • -30° ~ 350°

Actuator Type

  • Diaphragm actuator (self-operated)
  • Piston actuator (self-operated)