GODO Diaphragm Pump Connection Types: A Comprehensive Guide

Oct,24,2025

GODO diaphragm pumps are versatile pneumatic or electric positive displacement pumps, suitable for handling a broad spectrum of liquids—from dilute solutions to highly viscous fluids, and even those containing solid particles. Thanks to their flexible design and self-priming capability, these pumps are widely adopted across industries such as chemicals, food, cosmetics, pharmaceuticals, and wastewater treatment.

To ensure stable and safe operation, the connection between the pump and the liquid pipeline requires careful consideration. Selecting the appropriate connection type not only enhances operational performance and equipment lifespan but also ensures compliance with hygiene, safety, and technical standards specific to each industry.

Common Connection Types for GODO Diaphragm Pumps,Currently, three main connection types are commonly used in diaphragm pumps:

Clamp Connection

Characteristic:

This connection employs a stainless steel clamp to secure the pipe or device ends, with a silicone or PTFE gasket in between to ensure a tight seal. Its simple design allows for easy disassembly and cleaning.

Applications:

  1. Ideal for industries with stringent hygiene requirements, including:
  2. Food & Beverages: Milk, juice, beer, cooking oil, etc.

Pharmaceuticals: Active ingredients, injection solutions.

Cosmetics: Creams, essential oils, hand sanitizer gels, etc.

Applicable GODO Pump Models:

  1. QBW3-25, QBW3-40, QBW3-50, QBW3-80
  2. DBW3-25, DBW3-40, DBW3-50, DBW3-80

Advantages:

  1. Easy disassembly for cleaning and inspection.
  2. Ideal for clean and sterile environments.
  3. Saves time and reduces maintenance costs.

Disadvantages:

  1. Unsuitable for high-pressure systems.
  2. Prone to leakage if improperly installed or due to gasket wear.

Threaded Connection

Characteristics:

This type uses threaded ends (external plastic or metal) to connect the pipe and pump, offering a compact and secure fit.

Applications:

  1. Versatile and commonly used in small to medium industrial applications where hygiene is not the primary concern, such as:
  2. Pumping chemicals, waste oil, glue, ink, industrial detergents, etc.

Applicable GODO Pump Models:

  1. BFQ-25, BFQ-40
  2. QBY3-15 to QBY3-65
  3. BFD-25, BFD-40
  4. DBY3-15 to DBY3-65

Advantages:

  1. Excellent sealing and high-pressure resistance.
  2. Compact design, suitable for space-constrained systems.
  3. Cost-effective and easy to source replacement parts.

Disadvantages:

  1. More complex disassembly compared to clamp connections.
  2. Requires proper tightening techniques to prevent leakage or damage.
  3. Less suitable for environments requiring frequent cleaning.

Flange Connection

Characteristics:

This connection uses flat flanges fastened with screws and sealed with gaskets, providing a robust and durable design tailored for large-scale industrial systems.

Applications:Suited for high-pressure, high-flow, and heavy-duty applications

including:

Chemical plants, industrial wastewater treatment, mining, pulp, and paint production.

Applicable GODO Pump Models:

  1. BFQ-50, BFQ-80
  2. QBY3-80, QBY3-100, QBY3-125
  3. BFD-50, BFD-80
  4. DBY3-80, DBY3-100, DBY3-125

Advantages:

  1. High durability, heat resistance, and longevity.
  2. Simplifies component or gasket replacement during maintenance.
  3. Complies with industrial piping standards.

Disadvantages:

  1. Higher purchase and installation costs.
  2. Requires skilled technicians for disassembly.
  3. Occupies more space, making it unsuitable for compact systems.
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