Solo Sprayer 2L Model 404 - Professional Manual Pressure Sprayer
The Solo Model 404 is a lightweight yet incredibly robust manual pressure sprayer that perfectly bridges the gap between basic household spray bottles and heavy industrial equipment. Known for its highly practical and portable size, it is engineered to the exact same professional-grade standards as Solo’s larger commercial units, featuring a heavy-duty UV-stabilised tank and premium synthetic seals. Driven by a high-efficiency piston pump system, the Model 404 is designed for maximum portability and ease of use. This makes it the perfect companion for quick, targeted maintenance tasks around the home, balcony, or courtyard where a heavy backpack sprayer would be impractical. Its compact frame houses a powerful pump chamber that ensures a highly consistent, pressurized output for an even and effective spray pattern.
Crafted with premium German engineering, this robust handheld unit handles intensive spraying cycles without breaking a sweat. The robust internal piston pump configuration requires fewer strokes to reach full operating pressure, compressing air smoothly and maximizing your fluid output with minimal manual effort. A wide, stable base rim prevents the bottle from tipping over on uneven garden beds or concrete surfaces, while the translucent tank wall provides clear visibility of your liquid levels. Whether you are treating a compact patio garden or conducting spot chemical applications across a property, this handheld tool delivers exceptional pressurization and reliable performance.
Best For: Home gardeners, balcony growers, and hobbyists who need a high-quality, long-lasting sprayer for small-scale applications that require more power, pressure, and consistency than a standard trigger pack.
Key Features:
- High-Efficiency Piston Pump: Equipped with a premium manual piston pump system that builds smooth internal pressure quickly, delivering an even, continuous spray with minimal hand effort.
- Compact & Perfectly Balanced: Small and light enough to be carried effortlessly with one hand, even when filled to maximum capacity, while maintaining a low center of gravity to prevent tipping.
- Large Aperture Funnel Filling: Features a wide neck opening that makes it exceptionally easy to fill with liquids, mix concentrates without messy spills, and cleanly rinse out after use.
- Adjustable Universal Nozzle: The high-quality spray tip can be adjusted instantly from a targeted, long-reach pinpoint stream to a fine, wide-angle mist, providing versatility for various chemical applications.
- Automatic Safety Pressure Release: Includes a built-in pressure relief valve that prevents over-pressurisation during pumping and allows the user to safely bleed off air before opening the tank cap.
- Ergonomic Smooth Trigger: Designed with an easy-action thumb trigger that allows for precise control over fluid delivery, reducing hand and finger fatigue during repetitive garden tasks.
Product Technical Specifications Matrix:
| Sprayer Parameter | Engineering Details / Material Metrics |
|---|---|
| Brand & Origin | SOLO (German Engineered) |
| Model Number | Model 404 |
| Pump Mechanism Type | High-Reliability Manual Piston Pump |
| Fluid Capacity Volume | 2.0 Litres Maximum Liquid Capacity |
| Maximum Tank Pressure | 2.0 Bar (Approx. 29 PSI) Operating Limit |
| Tank Material Composition | High-Density, UV-Stabilised Polyethylene (HDPE) |
| Physical Mass (Empty) | Ultra-Lightweight at Approx. 0.4 kg |
Primary Spraying Applications
- Balcony & Patio Gardening: Perfectly sized for watering, feeding, and misting potted plants, indoor succulents, and hanging floral baskets in restricted structural spaces.
- Precision Spot Weed Treatment: Ideal for mixing small, targeted batches of non-selective spot-herbicides to eliminate individual weeds in lawn patches, garden borders, or between outdoor pavers.
- Indoor Plant Health & Foliar Feeding: Applying liquid plant food and trace organic fertilisers as a fine foliar spray directly to houseplants to maintain lush, green leaf profiles without a bulky setup.
- Targeted Pest Control: A convenient, lightweight tool for applying contact insecticides or natural pyrethrums to specific hotspot areas like window frames, door sills, or localized garden infestations.
Pro Tip & Piston Sprayer Care: To get the absolute longest life out of your Solo 404 piston pump sprayer, avoid storing it pressurized or in direct sunlight when not in use. High ambient heat causes the compressed air inside the tank to expand further, putting unnecessary static stress on the synthetic seals.
After finishing your application, lift the automatic pressure relief valve to bleed off the remaining air, give the tank a quick rinse with clean water, and wipe down the exterior handle. This simple routine keeps the high-density plastic looking brand new and prevents herbicide residues from degrading your hardware over time!
Oversized Item Delivery Options
Since oversized items require special handling, we may need to provide a custom freight quote for your order and will contact you with an updated shipping rate.
Available options include:
✔ Delivery to your closest depot for pickup - default method
✔ Direct delivery - requires forklift on site
✔ Direct delivery with tailgate lift truck (extra fees apply)
✔ Forklift loading at our warehouse (no extra charge if you arrange your own freight)
✔ Direct truck delivery (available in Victoria)
Important Notes:
- Shipping costs vary by location and method
- Because of the forklift requirement, delivery to the nearest depot is the default option and will be the method used unless you contact us to request otherwise.
Business Delivery:
- Business delivery is available for commercial customers only
- If you select business delivery and your products are bulky, it is your responsibility to ensure you have appropriate equipment (including forklifts) to unload products from the delivery truck
- If you select business delivery and you are not a business, you risk your product not being delivered and may incur additional fees to retrieve your order
- Business delivery customers must provide a valid business address and contact information
- Additional fees may apply for failed delivery attempts due to lack of appropriate unloading equipment
Let us know your preference, and we'll arrange the best solution for you!
Important Note on Availability & Shipping
Our warehouse serves as our office and logistics centre rather than a retail showroom. Because we ship from multiple locations and manage high-turnover stock, not all items are available for immediate pickup.
Lead Times:
- In-Stock Items: Usually ready for dispatch the same day.
- Supplier-Dependent Items: Usually take 2–8 weeks to arrive, depending on supplier availability. Products from Adloheat may take 8–12 weeks to manufacture—they are made to order in Australia by a small business, and longer lead times reflect the care put into quality.
While we strive for fast delivery, some timelines are subject to supplier availability and are beyond our control. We appreciate your patience as we source the best quality gear for your project.
Biosecurity & Interstate Shipping Restrictions
Due to strict state biosecurity regulations, we are unable to ship some products to certain states and territories:
- Potting Mixes cannot be shipped to Western Australia (WA), the Northern Territory (NT), or Tasmania (TAS).
- Seeds cannot be shipped to Western Australia (WA).
Orders placed for these items to restricted states will be cancelled and refunded. It is the customer's responsibility to ensure that the items being ordered can lawfully be delivered to their state or territory.
We Offer the Best Prices
We are committed to offering our customers the best prices possible. If you find the exact same product advertised at a lower price elsewhere, we invite you to contact us and we will review your price match request.
Price Match Conditions:
- The competitor must be an Australian-based seller with a physical presence in Australia
- The product must be the exact same item with a matching SKU or model number
- The product must be in stock and available for purchase at the competitor
- The lower price must be publicly advertised and currently available (not a clearance, closeout, or discontinued item)
- Price matching excludes marketplace platforms including but not limited to Temu and Aliexpress
- Price matching requests must be made before purchase
How to Request a Price Match:
To request a price match, please contact us at sales@greenhousepolytunnels.com.au with a link to the competitor's product listing, or call us on 0418 438 774. Please include the product details and the advertised lower price. We will review your request and respond within 2 business days.
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