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Product code: POCKETBOX

North Ridge Pocket Box Air Operated Diaphragm Pump

Pump Type - AODD

Max Flow Rate - 0.3M³H

Max Head - 80M

Max Temp - 95°C

Max Viscosity - 800 cst

Max Solid Passage - 0mm

Self Priming - Y

Pump Materials - PP, PP with Carbon Impregnation

Inlet/Outlet Sizes - 6mm

Drive - Air

Max Suction Lift - 3M



£410.00 (ex VAT)

This product has a delivery lead time of 1-2 Weeks


POCKET BOX Air Operated Diaphragm Pump

Flow Rate

Up to 5L/min

Head (Pressure)

Up to 80m

Inlet/Outlet Sizes

G 1/4” F

Operating Temperature

Up to 65°C (PP, PP+CF)


Up to 800cp

Drive Options

Air Motor


The POCKET BOX is a special compact design Air Operated Diaphragm pump. With a length of only 12.1cm and a width of only 7.5cm, this is one of the smallest AOD pumps available on the market. The compact design of this air operated diaphragm pump allows it to be installed in confined spaces where other pump types and AOD pumps would not fit.


Do not let the small design of this diaphragm pump fool you though, it is still capable of producing a flow rate of 5L/min and it is able to handle fluids with a viscosity up to 800cp.


The  POCKET BOX diaphragm pump can be utilised for many fluids in the industrial and marine markets, including; fuels, oils, chemicals, acids, wastewater, glues, resins, paints and inks. Applications for this diaphragm pump include; mechanical and metalworking industry, ceramic industry, petrochemical, wastewater treatment, biofuels, marine, mining, textile industry, automotive industry, paint industry, cosmetic industry, cleaning industry and ink and print industry.


This diaphragm pump is Atex zone 2 as standard meaning it is suitable for operation in non-safe potentially flammable environments. As an option, this pump can come in an Atex zone 1 version if required. This AOD pump is also able to run in high humidity environments which may cause issues for other pumps fitted with electric motors.


The POCKET BOX AOD pump can run dry for long periods and is capable of self-priming up to 3m vertically. The flow rates from this diaphragm pump can be varied very easily by altering the air pressure entering the motor; this versatility allows the operator the ability to dispense very precise flow rates if required.


The compact design, self-priming ability and adjustable flow rate makes it ideal for dosing applications.


Product summary


         Compact design

         Ideal for dosing applications

         Casing available in PP and PP+CF

         Diaphragms available in PTFE.

         Atex Zone 2 as standard II 3/3 GD c IIB T135°C, available in Atex Zone 1 if required II 2/2 GD c IIB T135°C

         Can run dry

         Can self prime up to 3m

         Ability to surface mount or wall mount the pump based on site requirements

         Can run on non-lubricated air

         Flow rate can be varied by adjusting the air pressure entering the motor

         Configurable suction and delivery port positions

         Accessories available including; pulsation dampener, air regulator, stroke counter, batching controller, flange kits and anti vibration feet.


Read how Air Operated Diaphragm Pumps operate and see installation Examples in our Guide


Yes, absolutely! Due to their unique design, diaphragm pumps can run dry indefinitely. As there is no mechanical seal that requires lubrication and the only pumping component is a rubber diaphragm, the pump can run without fluid for long periods without risk of damage to the internal components or motor.
This means the pump does not need lubricated air to work. Lubricated air is more expensive, oil levels must be frequently checked and the use of oil in air leads to particle emission through the pumps exhaust potentially leading to contaminated product and atmosphere.
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 6m on the inlet side, however this figure is affected by fluid viscosity, model, 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.
Firstly, always check the compatibility of the materials available against the fluid being pumped. The main materials to check are the connections, casing, diaphragms, balls, ball seats and o-ring. It may be that more than one material is suitable for your fluid and selection could be based on the application type. For instance; NBR, Santoprene, EPDM, Hytrel and PTFE are all suitable for water. If it is a simple transfer application, then the most cost-effective material will be best. However, if it involves abrasive solids or there is another variable to consider, then an alternative material may be a better selection.
Please be aware that the figures displayed relate to the largest pump from this range of products, not specific models. For details on solids passage for specific models, please refer to datasheets or contact a member of our sales team.
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.
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. Viscosity is a major factor when selecting the correct size pump. A full speed pump will not transfer high viscosity fluid correctly, whereas a slower speed pump will have a much gentler pumping action. Therefore, oversizing the pump and running it slower will provide much better results. Knowing if the pump is running intermittently or continuously also allows the correct pump to be selected. For instance, a pump running continuously 24/7 will require a larger pump ran slower rather than a smaller pump at full speed. Running the motor slower and oversizing the pump will reduce wear of the pump components, therefore lowering maintenance costs during its lifetime.
ATEX is an abbreviation of “Atmospheres Explosibles”. It is a regulation set out by the European Union to ensure the safety of products that are used to handle flammable products or are installed in environments containing flammable gases, vapours, mists or combustible dusts. For instance, if the pump is being installed in an explosive environment, then only the motor needs to meet the Atex standard, this stops it from causing a spark during operation and igniting the atmosphere. However, if the fluid being pumped is flammable, then the pump will also need to meet Atex standards to ensure that no sparks are caused inside the pump itself when the fluid goes through it. It is crucial that an Atex rated pump or motor are used for applications involving explosive environments or flammable fluids, using a non-Atex pump or motor in these situations is extremely dangerous and contravenes health and safety standards.


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