Sprayer Pumps Comet

Comet sprayer pumps are designed for crop treatments, weed control and the distribution of liquid solutions in vegetable gardens, gardens, orchards, vineyards and agricultural areas. Comet was founded in Reggio Emilia in 1959, initially producing pumps for crop treatments and subsequently extending its expertise to the Industrial and Cleaning sectors. Its Agriculture Division includes piston, diaphragm and centrifugal pumps for low, medium and high-pressure applications.

The brand’s international presence, now established in over 150 countries, is supported by a range intended both for occasional treatments on small areas and for operators working with more complex agricultural systems. The available selection includes portable solutions, wheeled units with tanks and pumps designed for integration into a system, allowing the most appropriate configuration to be chosen according to treatment frequency, working area and transport requirements.

This page also includes the following types of Comet sprayer pumps, organised by construction and operating method:

• Comet backpack or shoulder sprayer pumps: they make it easier to move between rows, flower beds and locations that are difficult to reach with wheeled machines. Their portable configuration is suitable for targeted treatments and small areas;
• Comet wheeled sprayer pumps with tank: they combine a liquid reserve with the mobility provided by wheels, reducing the load carried on the operator’s back. They are suitable for gardens, vegetable plots and crops requiring greater operating autonomy;
• Comet sprayer pumps and motor pumps (pump units only): these include pump units intended for integration with compatible tanks, hoses and control devices. They can be used to configure or replace the pumping unit of spraying and weed-control systems.

At AgriEuro, Comet sprayer pumps can be selected according to their technical features, making it easier to identify the product best suited to the working area, treatment frequency and available system. The main selection criteria are:

• configuration: backpack models prioritise mobility, wheeled models reduce the weight carried by the operator, and standalone pumps are designed for systems completed with compatible components;
• power supply: depending on the model, operation may be manual, battery-powered, electric, petrol-driven or connected to the tractor PTO; each solution is suited to different workloads and available power sources;
• operating pressure: this indicates the force with which liquid is delivered through the circuit and must be compatible with the nozzles, spray lance, hoses and intended treatment;
• flow rate: normally expressed in litres per minute, this indicates the volume of liquid moved and must be sized according to the number and total flow rate of the nozzles, as well as the recirculation required by the system;
• tank capacity: on complete models, this affects autonomy and transport weight; a larger capacity reduces refill stops but increases overall size and weight;
• pump technology: diaphragm, piston and centrifugal configurations cover different pressure ranges and applications and should be compared with the specifications of the individual model.

For hobby work, a compact solution may be sufficient for occasional treatments in vegetable gardens, on hedges and ornamental plants. Semi-professional work requires greater autonomy and continuity in large gardens or small orchards. Professional applications require careful evaluation of flow rate, pressure, component compatibility and operating continuity in vineyards, orchards and specialised crops.

The different configurations allow the equipment to be matched to the distance covered, the quantity of mixture and the crop layout. Portable models prioritise freedom of movement, wheeled versions provide greater autonomy and comfort, and standalone pumps meet technical integration requirements. The specifications of the individual model and its compatibility with the other circuit components must always be assessed.

Comet backpack sprayer pumps are intended for jobs that require frequent movement and access through narrow passages. A backpack configuration distributes the load across both shoulders; a shoulder-strap version is suitable for shorter, targeted jobs. These solutions are useful between closely spaced rows and in vegetable gardens, greenhouses, flower beds and gardens where a trolley could encounter obstacles. Tank capacity should be selected by balancing autonomy against the total weight of the full tank. The operating system also affects working pace: a manual pump requires action from the operator; a battery-powered version maintains delivery without continuous pumping. The lance, hose and nozzle determine the flow pattern, operating reach and type of atomisation. Before treatment, the liquid must be checked for compatibility with the machine materials, while doses, personal protective equipment and the instructions on the label of the distributed product must be observed.

The following aspects should be considered when comparing models:

• carrying method: backpack and shoulder-strap configurations distribute weight differently and should be selected according to the duration of the job;
• capacity and weight: the available volume determines autonomy but must be assessed together with the weight of the fully loaded machine;
• operation and accessories: manual or battery-powered operation, lance length, nozzle type and hose affect treatment continuity.

Comet wheeled sprayer pumps with tank transfer the weight of the mixture from the operator’s back to a wheeled frame. This design makes treatments easier along paths and in vegetable gardens, gardens and crops with regular routes where the trolley can move without significant obstacles. The integrated tank provides a larger liquid reserve than many portable solutions and limits refill stops. Its capacity must nevertheless be matched to the distance, slope and ground conditions. Wheel diameter, frame stability and hose length affect ease of transport and the working radius available without repeatedly moving the machine. On battery-powered or motor-driven models, pressure and flow rate must remain compatible with the fitted lance and nozzle. After every job, the circuit should be rinsed and checked in accordance with the manufacturer’s manual.

The model can be selected according to the following elements:

• integrated tank: a larger capacity extends autonomy between refills, with a corresponding increase in weight and overall dimensions;
• trolley and wheels: frame construction, support and wheel diameter affect transport over compact, uneven or sloping ground;
• hose, lance and adjustment: connection length and nozzle configuration define the operating radius and distribution method.

Comet sprayer pumps and motor pumps supplied as pump units only are intended for the construction, upgrading or replacement of a system’s pressure unit. Unlike complete machines, they require compatible external components, including a tank, suction and delivery lines, control unit, pressure gauge, hoses and safety devices. Selection starts with the flow rate required by the nozzles and recirculation system, followed by operating pressure, rotation speed and drive type. Connections, diameters, shaft, absorbed power and control-unit position must also be checked. An oversized or undersized pump can prevent the circuit from being adjusted correctly. These configurations are suitable for users who already have a spraying structure or need to replace an existing unit with a technically compatible model. Installation, initial start-up and maintenance must follow the Comet manual and the specifications of the entire system.

The following parameters should be checked before selection:

• flow rate and pressure: both values must cover the circuit requirements without exceeding the limits of the connected components;
• connection and drive: shaft, rotation speed, motor or PTO connection and required power must match the available machine;
• system compatibility: suction, delivery, control unit, pressure gauge, hoses and recirculation must be sized as a single system.

AgriEuro supports the selection of Comet sprayer pumps with services available before and after ordering. Its logistics, spare-parts and support services provide continued assistance throughout the product’s working life.

• fast and free delivery: orders are prepared at AgriEuro logistics centres, with an organised distribution network designed to reduce waiting times and deliver the product without shipping charges;
• option to order spare parts that are always available: after purchase, the spare-parts diagram associated with the product makes it possible to identify and order the correct components using clear references;
• attentive and personalised after-sales service: AgriEuro’s service assists with technical enquiries and support procedures, providing information linked to the purchased product and its documentation.

Choose and purchase the Comet sprayer pump best suited to your work from AgriEuro.

Selection starts with the area to be treated, frequency of work and required flow rate and pressure. A backpack pump may be suitable for targeted jobs and narrow routes; a wheeled model provides greater capacity without placing the tank’s weight on the operator’s back. Standalone pumps instead require a compatible system or a complete design that includes the missing components. The power supply, autonomy, fully loaded weight, hose length and lance and nozzle features should then be compared. Maximum ratings must not be considered in isolation: the operating point must comply with the specifications of every circuit component.

A backpack pump provides easier access between rows, steps, flower beds and passages where wheels would be impractical. A wheeled model transfers the weight to the frame and often allows a larger quantity of liquid to be transported. The choice therefore depends on the route, distance, slope, required capacity and treatment duration. Wheel performance on uneven ground must also be considered; for a portable model, the total weight with a full tank is particularly important. In both cases, the hose and lance must provide an operating radius suited to the working area.

Pressure, expressed in bar, indicates the force exerted by the liquid in the circuit; flow rate, normally expressed in litres per minute, indicates the volume moved per unit of time. Higher pressure does not compensate for insufficient flow and does not automatically improve distribution. The pump must supply all active nozzles, support the required recirculation and operate within the limits of the hoses, valves and control unit. Nozzle type and size also affect the delivered flow. The two values must therefore be considered together and compared with the actual system configuration.

The correct capacity depends on the amount of mixture required for the working area and the acceptable number of refills during the job. A larger tank increases autonomy but also adds weight, size and resistance to movement. For backpack models, the calculation must include the weight of the liquid and machine; for wheeled models, the slope, ground and available passages must be considered. Tank volume does not replace correct mixture preparation: dosage, concentration and application quantity must comply with the product label and applicable regulations. Preparing excess mixture should be avoided.

The power supply should be selected according to working time, available energy and required performance. Manual models are simple and suitable for small jobs but require pumping by the operator. Battery-powered versions eliminate continuous manual pumping and should be assessed according to runtime and charging time. Electric pumps require a compatible power supply and protected connection; petrol units work without a mains connection and are subject to the requirements of their engine. Tractor-mounted pumps must match the rotation speed, power and PTO connection specified by the manufacturer.

A complete machine normally combines a pump, tank, hose and lance in a configuration prepared for operation according to the manufacturer’s instructions. A standalone pump is the unit that pressurises the liquid and must be integrated into a circuit. It therefore requires a tank, suction and delivery lines, control system, pressure gauge, hoses, fittings and compatible safety devices. Before replacing an existing pump, its model, flow rate, pressure, connections, shaft type, rotation speed and power requirement must be identified. External similarity alone is not sufficient to establish compatibility with the system.

No. The liquid must be compatible with the materials used for the pump, tank, seals, hoses and nozzles. The machine manual, label and information sheet for the product to be distributed must be consulted before operation. Substances without clear compatibility information or applications not approved by the manufacturer must not be used. Plant protection products require compliance with the specified doses, authorised crops, timing, weather conditions, personal protective equipment and current regulations. An incompatible mixture can damage components, alter delivery or create risks for the operator and treated area.

Fluctuations may be caused by air entering the suction line, dirty filters, leaks, irregular valves, blocked nozzles, a faulty pressure gauge or incorrect adjustment. Before attributing the problem to the pump, the entire circuit should be checked with the machine stopped and made safe, following the manual. If the problem affects only one section, the valves, nozzle holders and filters on that line should be checked first. If it affects the entire system, the suction line, control unit, recirculation and pump unit should be examined. Pressure must never be increased beyond the declared limits to compensate for a fault or blockage.

Routine maintenance includes rinsing the circuit, cleaning the filters, checking hoses, fittings and nozzles, and inspecting for leaks. Frequencies and procedures vary according to the model, pump technology and distributed liquid, so the Comet manual remains the main reference. Diaphragm pumps may require specific checks of the oil, pressure accumulator and diaphragms; these operations must only be performed as instructed by the manufacturer. Before cleaning or dismantling, the machine must be stopped, residual pressure released and every power source secured. Worn or damaged components must be replaced with compatible spare parts.

Before extended storage, the machine and circuit must be emptied and cleaned according to the manual, without leaving residues in the tank, pump or hoses. Residual product and washing water must be handled in accordance with the applicable instructions and must not be discharged improperly. The machine should be stored in a dry, frost-protected location inaccessible to unauthorised persons. Batteries and engines require the specific procedures stated by the manufacturer. Before seasonal operation resumes, the tightness of the fittings, condition of the hoses, filters, nozzles, specified fluid levels and correct pressure-gauge reading should be checked.