Efficient circulation for heating and cooling your greenhouse

The Johnson circulation pump optimizes the heating and cooling systems in your greenhouse. This pump is designed for both clean and slightly contaminated thin liquids.

Advantages of the Johnson circulation pump

• Compact and modular design: The pump is easy to install in your greenhouse.
• Low NPSH for greater efficiency: The low NPSH minimizes the risk of cavitation.
• Durable in use: Strong materials make it suitable for intensive use.
• Additional feature (Repair seal kit): Each pump comes with an available repair seal kit.

Compact and modular design

The Johnson circulation pump is a versatile pump with a dry motor, specially developed for efficient liquid circulation in heating and cooling systems. Its compact and modular design allows for flexible use; the pump can be installed either horizontally or vertically in your greenhouse. This versatility makes it easy to install on the floor or wall.

Low NPSH for greater efficiency

The closed impeller and special suction bend are designed for low NPSH (Net Positive Suction Head). NPSH refers to the pressure loss within the first part of the pump housing. This low NPSH minimizes the risk of cavitation, the formation and sudden collapse of vapor-filled bubbles. This prevents damage to the pump and increases its efficiency.

Durable in use

With a robust cast iron housing and impeller, the pump is highly durable and able to withstand heavy use. Additionally, the standard mechanical shaft seal offers extra protection, further extending the pump's lifespan.

Additional feature: repair seal kit

Each Johnson circulation pump has their own repair seal kit available. This repair kit contains various components, including a gasket, an o-ring for the impeller, a bellows seal/mechanical seal, a shaft sleeve, an o-ring for the pump housing, and a key.

Packaging Johnson circulation pump

This product is supplied without gaskets, flanges, or bolts and nuts. Additionally, only one gasket is required per flange.

Technical specifications:

• Material (Pump housing): Cast iron
• Material (Impeller): Cast iron
• Maximum capacity: 400 m³/h
• Maximum delivery head: 28 meters
• Maximum temperature: 140°C
• Maximum operating pressure: 6 or 10 bar
• Nominal motor peed: 1450 rpm
• Motor voltage: 230/400V 50 Hz

With the Johnson circulation pump, you’re choosing a reliable, efficient, and durable solution for heating and cooling your greenhouse. In the attachments, you can find more specific information to find the pump that's right for you. For more information, click the button above to request a quote.