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Product code: I, IR Series

Calpeda I & IR Series Gear Pump

Pump Type - Gear

Max Flow Rate M³H - 0.6 M³H

Max Head - 50M

Pump Materials - Cast Iron

Max Temp - 90°C

Max Viscosity - 120 cst

Max Solid Passage - 0mm

Self Priming - Y

Inlet/Outlet Sizes - 25mm

Drive - AC Electric

Max Suction Lift - 2M

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DESCRIPTION

Calpeda I, IR Series Gear Pump

Flow Rate	Up to 0.6m³/hr
Head (Pressure)	Up to 5 Bar
Inlet/Outlet Sizes	1”
Operating Temperature	Up to 90°C
Drive Options	Electric Motor

The Calpeda I, IR series of gear pump is designed to transfer clean fuel oils, diesel, hydraulic oils and fluids with lubricating properties up to viscosities of 120cp.

The I, IR range is particularly excellent for any applications requiring small flow rates as low as 0.6m³/hr at pressures up to 5 bar.

This gear pump is constructed with a cast iron casing and steel gears.

This Calpeda pump series is supplied with in-line BSP connections as standard.

Motor options include 230V single phase 50Hz and 230V/400V three phase 50Hz, other voltages and 60Hz motors are available on request.

Product Summary

• Gear pump

• Compact design

• Suitable for clean fuel oils, diesel, hydraulic oils and fluids with lubricating properties

• Can handle viscosities up to 120cp

• Constructed with cast iron casing and steel gears

• BSP in-line connections as standard

• Motor options include; 230V/1Ph/50Hz and 230V/400V/3Ph/50Hz, other voltages and 60Hz available on request

• IP54 as standard, IP55 available on request

Learn more about Gear Pumps in our guide

FAQS

Can this pump run dry?

No, definitely not! Gear pumps will incur damage even after short periods of dry running. Firstly, the gears require lubrication from the pumped fluid, for example fuel and oil. Dry running without these will cause fast and irreversible damage. The mechanical seal requires lubrication and cooling while the pump is operating. Without the presence of fluid, the mechanical seal will overheat and crack, and this may cause the pump to leak and fluid to enter the motor. There is also the possibility that the motor will burn out. Our advice is to ensure that the pump always has access to fluid while running, the vessel or sump on the inlet side of the pump must never run out of fluid while the pump is active. Level sensors or a float switch can be installed in the fluid chamber ensuring that the pump is turned off in the event there is no fluid. Another way of protecting the pump is to fit a dry running device, this will turn the pump off if it detects that no fluid is entering the pump. If you think that dry running is inevitable, then please speak to us and we will try to select a more suitable pump for your application.

What does the term self-priming mean?

A pump must be primed in order to operate correctly, this means that the pump casing and inlet pipe must be filled with fluid and the air removed before operation. This needs to be done manually by the pump operator for a non-self-priming pump each time the pump is used to avoid damage from dry running. A self-priming pump removes these issues by completing the priming process automatically. The air is removed from the inlet pipework and pump casing when the pump is activated. Self-priming pumps are particularly useful for installations with a suction lift on the inlet side of the pump, the pump will draw the fluid up the pipework by creating a vacuum and removing any air that is present. In ideal conditions, a self-priming pump can lift fluids up to around 8m on the inlet side, however this figure is affected by fluid viscosity, pipework bore and other installation conditions, therefore this figure can be much lower from case to case. Allowances must also be made for wear and tear; suction lift capabilities will be much lower for older and worn pumps.

What viscosity can this pump handle?

Please be aware that the figures displayed relate to the largest pump from this range of products, not specific models. For details on viscosity for specific models, please refer to datasheets or contact a member of our sales team.

How do I know what size pump and motor speed is correct for my application?

A clear picture of the pump system is required to make an accurate selection. The main pieces of information required include; a description of the application, bore of pipework, the fluid, viscosity, size and type of solids, flow rate and pressure/head. With these pieces of information, a pump can be sized correctly to ensure it delivers the required flow rate and pressure and that is also operates at its best efficiency point to lower lifetime costs. Knowing if the pump is running intermittently or continuously also allows the correct motor speed to be selected. For instance, a pump running continuously 24/7 will require a slower speed motor rather than a full speed motor. Running the motor slower and oversizing the pump will reduce wear of the motor and the pump, therefore lowering maintenance costs during their lifetime.

How does a bypass work and do I need one?

An integral bypass is designed to protect the pump and system from overpressure for small periods of time. It is typically set to around 10% higher than the working pressure, it will open and recirculate the fluid inside the pump head when the set pressure is achieved. An integral bypass is only a temporary solution and cannot operate indefinitely, an additional external bypass that runs back to the fluid source is always recommended as a more permanent solution.

What is NPSH and why is it so important?

NPSH is an acronym for Net Positive Suction Head. NPSH measures the absolute pressure present in a fluid. There are two main ways that NPSH is expressed in a pump system NPSHa - This is the amount of Net Positive Suction Head available at the pump inlet. NPSHa demonstrates the amount of pressure acting on a fluid as it enters the pump. This measures the amount of pressure between the liquid staying in its current state and forming vapour bubbles (beginning to boil). NPSHr - This is the amount of Net Positive Suction Head that the pump requires to operate without experiencing the damaging effect of cavitation, thus causing a dramatic reduction in pump performance. It is very important to pay attention to these values when making a pump selection. Selecting a pump that requires more NPSH than is available in your system will cause fast and long-lasting damage to the pump and thus you will incur large repair costs and downtime.