Condensate Pump

A mechanical power pump operates based on the principle of traps, utilizing steam, air, or other gases as power sources to transfer condensed water from low-pressure to high-pressure areas, or from a vacuum to normal pressure. This type of pump offers numerous advantages, including automatic control, resistance to cavitation, simple maintenance, no need for electricity, resistance to water hammer, large capacity, explosion-proof design, silent operation, and the ability to adjust the head based on the pressure of the driving steam or gas. Its unique capabilities make it ideal for use in steam systems for transporting condensed water and low-viscosity, non-volatile liquids.

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Working Principle

  • Inlet and Exhaust Process: Initially, the inlet check valve opens while the outlet check valve remains closed due to high back pressure. Water begins to enter the pump, causing the float to be in a low position. As the water level rises, the exhaust valve opens, and the float reaches its highest position, triggering the controller to switch to a neutral state.
  • Inlet Steam (Gas) Drainage: Once the float reaches a high position, the controller activates, closing the exhaust valve and opening the power steam (or air) inlet. Steam is injected into the valve, pushing the condensate in the pump to a high-pressure area using steam pressure. During this process, the inlet check valve remains closed due to the high internal pressure. When the float drops to a low position, the controller switches again, closing the power steam inlet, opening the exhaust valve, and initiating the next cycle.

Performance Characteristics

  • Non-Electric Drive: The pump is powered by steam or compressed air, making it explosion-proof, safe, and suitable for any environment.
  • Compact Structure: It has no specific installation requirements and can operate normally even in open environments.
  • Automatic Control: The water output is automatically adjusted based on the intake. As the volume of condensate increases, the working frequency accelerates; when it decreases, the frequency slows down. The pump stops when there is no condensate.
  • Cavitation-Free Operation: It completely eliminates the cavitation issues found in electric pumps.
  • Durable Construction: All internal parts are made of stainless steel, and special materials are used to ensure optimal performance and longevity.

Important Considerations

  • It is recommended that the head height of the incoming fluid be at least 0.5 meters (measured from the pump cover). Please refer to the “Inlet Water Height Correction Factor” for guidance.
  • The power steam inlet should be connected to RC1/2″.
  • For normal operation, the saturated condensate must be flashed or condensed. In a closed system, ensure that the pressure difference and back pressure rate are sufficient for the pump trap to function properly.
  • The standard configuration for the condensate inlet and outlet is a HG/T20592-2009 PN16 flange connection. If other standards such as ASME16.5 or JIS are required, please specify.

Product Documents

  • Product Brochure
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  • Installation and Maintenance Instructions
Download Product Brochure

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