--- title: "4L/5L/7L/8L Garden Pressure Sprayer MANUAL | Vivosun Content & Support Center" description: "4L/5L/7L/8L Garden Pressure Sprayer MANUAL | Vivosun Content & Support Center" type: "manual" language: "en" last_updated: "2026-10-29" canonical_url: "https://www.vivosun.com/support/guide/garden-pressure-sprayer" source: "vivosun_support" --- 4L/5L/7L/8L Garden Pressure Sprayer MANUAL ========================================== PRINCIPAL FUNCTIONS {#_principal_functions} ------------------------------------------- This product is one of the compression sprayers developed our company. It is economical, safe, and highly efficient. It has a simple structure, operates conveniently, and sprays uniformly. The sprayer is ideal for uses in horticulture, insect control, cleaning, and hygiene control. DESCRIPTIONS {#_descriptions} ----------------------------- **Structure:** This sprayer comes with five interconnected pieces: a tank, a pump (including an air pump, a pumping handle, and a piston), a spraying tube (includes a tube, a switch, a spraying rod, and a spraying head), a safety valve, and a strap. **Principles:** The pumping handle moves up or down to enable the compressed air to enter the tank. This produces a pressure difference between the inside and the outside of the tank, which drives the fluids into the tube and spraying rod. **Features:** 1.The design is elegant, simple, and allows users to operate the spray conveniently without worrying about leakage. 2.The sprayer comes with a trigger switch, which controls leakage and allows the user to flexibly operate the spray. 3.Made of high-quality materials that ensure this sprayer is resistant to acids, bases, and corrosive chemicals. The product is well-sealed and durable. COMPONENTS {#_components} ------------------------- ![69237404ce862a74cf13f06ce0f249e8](https://image.next.vivosun.com/asset/width-516/picture/69237404ce862a74cf13f06ce0f249e8.png) |---|---------------| | ① | Air pump | | ② | Safety valve | | ③ | Strap | | ④ | Tank | | ⑤ | Spraying head | | ⑥ | Sprayer rod | | ⑦ | Rubber tube | | ⑧ | Air cylinder | | ⑨ | Switch | TECHNICAL PARAMETERS {#_technical_parameters} --------------------------------------------- | Type | Volume of Tank | Max Operating Pressure | Operating Stroke | |:-----------:|:--------------:|:----------------------:|:----------------:| | Compression | 3L | 3 bar | 145mm | | Compression | 4L | 2 bar | 217mm | | Compression | 5L | 2 bar | 217mm | | Compression | 7L | 2 bar | 217mm | | Compression | 8L | 2 bar | 217mm | | Compression | | Compression | | Flow Rate (2 bar) | Overall Size (mm) | Net Weight of the Whole Unit | |:-----------------:|:-----------------:|:----------------------------:| | 0.35 L/min | 180×400 | 0.90 kg | | 0.35 L/min | 180×430 | 0.96 kg | | 0.35 L/min | 180×530 | 1.22 kg | | 0.35 L/min | 180×565 | 1.30 kg | PRECAUTIONS {#_precautions} --------------------------- | Hazards || |:--------------------------------------------------------------------------------------------------------------------------------:|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ![2ae543d45d1c44d9e8f60e13c364abd8](https://image.next.vivosun.com/asset/width-177/picture/2ae543d45d1c44d9e8f60e13c364abd8.png) | Please read this entire manual carefully and follow the instructions to properly operate the pressure sprayer. | | ![4da9ebae5037d3d1ea06c9dee119d53e](https://image.next.vivosun.com/asset/width-178/picture/4da9ebae5037d3d1ea06c9dee119d53e.png) | The user should wear a mask, operation hat, protective clothing, waterproof gloves, and rubber boots while operating the sprayer. | | ![ac9cecc0aed0830aa0a46c4b518f77e6](https://image.next.vivosun.com/asset/width-225/picture/ac9cecc0aed0830aa0a46c4b518f77e6.png) | Keep the sprayer out of the reach of children. When disposing of pesticides, please follow the safety instructions published by the manufacturer. | | ![784d73ce93d21303a21a05dd60a3f586](https://image.next.vivosun.com/asset/width-371/picture/784d73ce93d21303a21a05dd60a3f586.png) | In the case of inhalation: immediately leave the vicinity and lie down in a well-ventilated area. If skin comes into contact with the pesticide, immediately rinse the skin with water. In the case of ingestion, induce vomiting with clean or salt water and go to the hospital as soon as possible. | | ![089c554e4ca02ab385b3e71f80579f37](https://image.next.vivosun.com/asset/width-307/picture/089c554e4ca02ab385b3e71f80579f37.png) | Do not spray at humans or animals. Do not operate against the wind. | | ![5a5d00597e865baae2ccc16cfccc8a55](https://image.next.vivosun.com/asset/width-334/picture/5a5d00597e865baae2ccc16cfccc8a55.png) | Rlsdual chemicals must be kept In a container - do not pour the chemicals onto the ground, outdoors, or down the drain. Empty bottles and bags must be disposed of properly through a proper waste dispose I site. Do not allow chemlcals to seep Into groundwater or contaminate rivers, streams, or aquatic systems. | | ![adf59f3f95f0c2cccc4e7eac5e5a5532](https://image.next.vivosun.com/asset/width-318/picture/adf59f3f95f0c2cccc4e7eac5e5a5532.png) | Do not dispense pesticide if fatigued, in poor health, injured, allergic to pesticide, or pregnant. Do not consume alcohol immediately after using the spray. | | ![4abdbbc5737b5c56639bab8de83f193b](https://image.next.vivosun.com/asset/width-326/picture/4abdbbc5737b5c56639bab8de83f193b.png) | Do not use strong acids, alkaline, or other inflammable solutions. Do not use highly toxic or persistent pesticides on crops, vegetables, fruits, and medicinal or tea leaves. The harvesting time should be long after the application of the pesticide. | | ![04912c6a04ff390e0a4c516a626ad591](https://image.next.vivosun.com/asset/width-314/picture/04912c6a04ff390e0a4c516a626ad591.png) | Avoid exposure to heat sources and the sun. | | ![395ae433766931b8f20a390319bab10e](https://image.next.vivosun.com/asset/width-302/picture/395ae433766931b8f20a390319bab10e.png) | Do not leave the sprayer unattended in a public place. It may pose a risk to public safety. | | Precautions || |:--------------------------------------------------------------------------------------------------------------------------------:|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ![9c2956de248de3e578b95b4c89ecc3cb](https://image.next.vivosun.com/asset/width-349/picture/9c2956de248de3e578b95b4c89ecc3cb.png) | Do not put chemicals over 40°C into the sprayer. | | ![b81f19b816c39e2da651727f61e5193a](https://image.next.vivosun.com/asset/width-191/picture/b81f19b816c39e2da651727f61e5193a.png) | Perform a trial spray with clean water before operating to check for possible leakage in the tank, hose, switch, and spraying head. | | ![47c98a2b320f74234e1dc0a3de6c6c5e](https://image.next.vivosun.com/asset/width-342/picture/47c98a2b320f74234e1dc0a3de6c6c5e.png) | Follow the instructions and formula published by the pesticide manufacturer when preparing the chemicals for use. Unauthorized altering of the formula or dilution rate is prohibited, as it may endanger the user and animals or result in pest control failure. | | ![a0422c1e9aebc424fe8956814665cfe4](https://image.next.vivosun.com/asset/width-248/picture/a0422c1e9aebc424fe8956814665cfe4.png) | Change clothing and wash exposed parts of your body after operating this sprayer. In the case of using hlghly toxic chemlcals, pesticides, or germicides, the user should shower lmmedlately after operating thls device to ensure their safety - do not eat until you have washed yourself. | OPERATING INSTRUCTIONS {#_operating_instructions} ------------------------------------------------- After unpacking, check whether the components and parts in the packing case match the items on the packaging list. Once this check is complete, assemble the sprayer according to the following instructions. Please refer to the diagram of the installation of the spraying rod. ![7e5cb12c8a9c80140ab1e7aa4741702f](https://image.next.vivosun.com/asset/width-977/picture/7e5cb12c8a9c80140ab1e7aa4741702f.png) Diagram for installation of spraying rod While operating, hold the handle and press it down forcefully to move its lower part into the groove of the guide holder. Turn the handle to dismount the pump set. Fill the pre-mixed liquid to the rated capacity before tightening the pump. Draw the handle out of the groove and start inflating evenly to add more pressure to the tank (Note: the switch here MUST be turned "o-"). When the pressure increases, the sprayer is ready for use. Hold the switch handle while using the sprayer. You may choose the spot spraying option or the continuous spraying option. You may also regulate the spray nozzle to improve the quality of atomization, depending on the requirements of different props. Pump 15-20 times per use. ![9b6b7e3cfa110db7b1c89267d6771403](https://image.next.vivosun.com/asset/width-1579/picture/9b6b7e3cfa110db7b1c89267d6771403.png) ### 1. Switch Control {#_1_switch_control} |---------------|---------------------| | ![03e0daf767e544776fbac552700a7e50](https://image.next.vivosun.com/asset/width-1109/picture/03e0daf767e544776fbac552700a7e50.png) || | Spot Spraying | Continuous Spraying | ### 2. Explanation of Safety Valve {#_2_explanation_of_safety_valve} ![19676e296a916ce4f3a0f93beb1650fa](https://image.next.vivosun.com/asset/width-407/picture/19676e296a916ce4f3a0f93beb1650fa.png) Note: if there is pressure in the tank, release it before removing the air cylinder. Press the switch plate or pull the valve stem of the safety valve to release pressure. When the air pressure in the tank rises to about 3-3.5bar, the safety valve will discharge the redundant air, which keeps the pressure at a stable level. ### 3. Adjust the Spraying Head {#_3_adjust_the_spraying_head} |----------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------| | ![414411b81fe905e38db35b7b277ad33d](https://image.next.vivosun.com/asset/width-551/picture/414411b81fe905e38db35b7b277ad33d.png) | ![40c4e1860050dd6ecb8b1647905ec0f7](https://image.next.vivosun.com/asset/width-551/picture/40c4e1860050dd6ecb8b1647905ec0f7.png) | | **Tightened Nozzle** "shower" spray | **Loosened Nozzle** "watercolumn" spray | ### 4. Fixing the Spray Rod {#_4_fixing_the_spray_rod} ![efe743e6c82d24acfc19e8821ac2acd4](https://image.next.vivosun.com/asset/width-632/picture/efe743e6c82d24acfc19e8821ac2acd4.png) STRUCTURAL DIAGRAM AND DETAILS {#_structural_diagram_and_details} ----------------------------------------------------------------- ![5bc111ce6aa510c641bafe0680dc89fa](https://image.next.vivosun.com/asset/width-1668/picture/5bc111ce6aa510c641bafe0680dc89fa.png) | S/N | Description | Quantity | S/N | Description | Quantity | |:---:|:-----------------------:|:--------:|:---:|:----------------------:|:--------:| | 1 | Cap | 1 | 21 | O-ring φ7.6×1.9 | 1 | | 2 | Swril core | 1 | 22 | Cap of safety valve | 1 | | 3 | O-ring φ 14×2 | 1 | 23 | Spring of safety valve | 1 | | 4 | Bend | 1 | 24 | Snap fastener | 1 | | 5 | Lid of sprayer rod | 1 | 25 | Flat washer | 1 | | 6 | Sprayer rod | 1 | 26 | Strap ring | 1 | | 7 | Switch body | 1 | 27 | Strap button | 1 | | 8 | Switch pin | 1 | 28 | Strap | 1 | | 9 | Press plate | 1 | 29 | O-ring φ55x5 | 1 | | 10 | Seal ring of the handle | 1 | 30 | Tank | 1 | | 11 | O-ring φ6.8×1.6 | 1 | 31 | Cap of rubber tube Ⅱ | 1 | | 12 | Valve plug | 1 | 32 | Coupling head | 1 | | 13 | O-ring φ7.6×1.9 | 1 | 33 | Suction hose | 1 | | 14 | Switch spring | 1 | 34 | Small filter screen | 1 | | 15 | Switch seal ring | 1 | 35 | Air cylinder cap | 1 | | 16 | Switch nut | 1 | 36 | Piston | 1 | | 17 | Switch handle | 1 | 37 | Piston O-ring 35.6×4.8 | 1 | | 18 | Rubber tube cap Ⅰ | 1 | 38 | Air cylinder | 1 | | 19 | Rubber tube | 1 | 39 | Water-proof washer | 1 | | 20 | Safety valve rod | 1 | 40 | Pump handle | 1 | ``` *The O-rings in the spare part bag are provided for future replacement, in case the old ones break. ``` 3 KINDS OF SPRINKLERS {#_3_kinds_of_sprinklers} ----------------------------------------------- |----------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------| | ![b5dfffc7c42aa4daef8c704e9987eb2d](https://image.next.vivosun.com/asset/width-399/picture/b5dfffc7c42aa4daef8c704e9987eb2d.png) | Adjustable dual nozzles can change the spary range. | ![3c4259126ccfa2c2df289a1a06bc28e8](https://image.next.vivosun.com/asset/width-513/picture/3c4259126ccfa2c2df289a1a06bc28e8.png) | | ![3d9d43025494ed5697d705134a592058](https://image.next.vivosun.com/asset/width-367/picture/3d9d43025494ed5697d705134a592058.png) | Basic sprinkler head can meet daily needs. | ![3903445e3eaf9e37a8c3769e5c984c4f](https://image.next.vivosun.com/asset/width-513/picture/3903445e3eaf9e37a8c3769e5c984c4f.png) | | ![e24dc12d123b14c0e6baf9dbfc56a8dc](https://image.next.vivosun.com/asset/width-385/picture/e24dc12d123b14c0e6baf9dbfc56a8dc.png) | The fan shape can have a wider spray range. | ![635702a9dd138ab2b1a1c6447126f8d2](https://image.next.vivosun.com/asset/width-513/picture/635702a9dd138ab2b1a1c6447126f8d2.png) | CLEANING AND MAINTENANCE {#_cleaning_and_maintenance} ----------------------------------------------------- After use, please wash the surface of the sprayer in an appropriate cleaning site. Add clean water to the tank. Next, pump and spray the water until the drainage (i.e., water flowing out) becomes clean. Please clean the sprayer head with water. Never use a hard object to remove impurities inside the sprayer nozzle as this will damage the device. Lubricate the O-ring of the spray head after cleaning. **The comperssion sprayer requires occasional maintenance, such as:** **1.After a 1- or 2-month period of frequent use;** **2.After a prolonged period without being used;** **Proper maintenance:** **Use a low viscosity grease to lubricate the O-rings on the safety valve and on the piston.** ![2282fd858fe5efc05daeb133a42b6644](https://image.next.vivosun.com/asset/width-1569/picture/2282fd858fe5efc05daeb133a42b6644.png) STORAGE {#_storage} ------------------- ![c7044fd51cec07ffd295bcd2cdcfa3c9](https://image.next.vivosun.com/asset/width-571/picture/c7044fd51cec07ffd295bcd2cdcfa3c9.png) The sprayer should be stored in a dry place indoors and out of the reach of children. Please release the gas in the tank before storing the sprayer. TROUBLESHOOTING {#_troubleshooting} ----------------------------------- | Problems | Potential Causes | Solutions | |:-------------------------------------:|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------:|:---------------------------------------------------------------------------------------------------------------------------------------------------------------------------:| | Leakage or poor spraying performance. | * Seal rings at various joints may be loose or damaged. * The small filter screen of the suction hose may be blocked. * The spray nozzle may be blocked. * Insufficient air pressure. | * Tighten or replace it. * Clean it. * Clean and repair it. * Pump to add air pressure. | | Extra-high pumping pressure. | * Insufficient lubrication at the O-ring of the piston. * The pressure of the tank may be too high. | * Apply grease to the O-ring of the piston. * Cease inflating and check whether the safety valve is blocked or working. Apply lubrication to the safety valve if necessary. | | Extra-low pumping pressure. | * The O-ring of the piston may be worn or damaged. * The waterproof washer may have come off. | * Replace the O-ring of the piston. * Repair it. | | Spraying air instead of water. | * The suction hose in the tank may have come off. | * Remove the nut to empty the residuals in the air chamber. Tightly insert the suction hose into the rubber tube and apply a waterproof adhesive to the joint. | PACKING LIST {#_packing_list} ----------------------------- | S/N | Description | Unit | Qty. | |:---:|:-----------:|:------:|:----:| | 1 | Main Unit | Set | 1 | | 2 | Spray Rod | Pc(s). | 1 | | 3 | User Manual | Pc(s). | 1 |