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3.0 Gallon Plastic Reverse Osmosis Water Storage Pressure Tank
The Viano 3.0 Gallon Plastic RO Water Storage Pressure Tank (WYN-PT3G) is a rust-proof water storage solution engineered for residential and commercial Reverse Osmosis (RO) water purification systems. Built with a high-purity, food-grade virgin Polypropylene (PP) outer casing and an internal high-grade butyl diaphragm, this pressure vessel eliminates metal oxidation, rusting, and secondary water contamination.
Operating with a pre-charged internal air chamber (5-7 PSI), it delivers a steady, pressurized water flow to drinking faucets even during municipal power outages or low inlet water pressure conditions. Equipped with a standard 1/4" NPT connection port, the tank offers universal compatibility across global RO system brands.
Key Features
100% Rust-Proof Virgin PP Casing: Constructed from high-density, food-grade virgin Polypropylene (PP) that resists chipping, corrosion, and environmental humidity, guaranteeing long-term hygienic water storage without rust risk.
High-Purity Butyl Diaphragm & Food-Grade Liner: Features a premium butyl rubber diaphragm and food-safe inner liner that completely isolates purified water from air and the outer casing, preventing taste alteration and bacterial growth.
Reliable Pressurized Water Output: Factory pre-charged at 5-7 PSI (0.35-0.5 bar) to maintain steady dispensing pressure at the faucet, maximizing effective water storage volume (~6.5-8.0 Liters).
Leak-Proof Connection & Sealed Air Valve: Engineered with a heavy-duty 1/4" NPT stainless steel/brass threaded port and a sealed top air inflation valve to prevent pressure loss or air/water leaks under continuous working pressure.
Universal 1/4" Connection Compatibility: Fits standard 1/4" RO tank ball valves and connects seamlessly with all major residential under-sink RO filtration systems, counter-top purifiers, and refrigerator ice makers.
Comprehensive B2B OEM/ODM Customization: Flexible factory production supporting custom capacity specifications (2.0G, 3.0G, 3.2G, 4.0G), custom body colors, private label sticker printing, pressure rating adjustments, and bulk packaging options.
Product Details
Why Choose Viano as Your Water Treatment Partner?
More Than a Supplier, Your Strategic Manufacturing Base in China
01. The Power of a Source Manufacturer
Founded in 2007 and headquartered in Hefei, Viano combines 15+ years of water purification expertise with massive production capacity. With 300+ skilled staff and an annual output of 400,000 sets, we are the heavy-duty engine behind your brand's global growth.
02. Market-Ready Standards & Recognition
We lower your market entry barriers by maintaining up-to-date international certifications. Our rigorous quality management system ensures that every water purifier delivered is fully compliant, reliable, and ready for your shelves.
03. Full-Service OEM/ODM: From Concept to Market
Unlock total flexibility with our integrated manufacturing. We support diverse customization options including logo branding, exclusive color schemes, and regional water quality adjustments. With our in-house mold center and certification support, we accelerate your time-to-market while ensuring strict confidentiality (NDA).
04. Inside Our Factory: Your OEM/ODM Powerhouse
Take a transparent look into Viano's manufacturing excellence. With in-house molding, food-grade injection, and 100% functional testing, we turn complex engineering into reliable water solutions for global partners.
Manufacturing Excellence
Precision Tooling Center
200+ Precision Molds | Rapid Prototyping - Equipped with an extensive library of 200+ sets of precision molds, we support independent R&D and rapid prototyping, ensuring exclusive mold protection for OEM partners.
Injection Molding Workshop
15+ High-Speed Injection Machines | Food-Grade Material - Featuring 15+ advanced injection molding units, we produce 100% of our filter housings and water-contact components in-house. We strictly use food-grade raw materials to ensure structural durability and water safety.
Final Assembly Lines
4 Semi-Automated Lines | 50,000 Units Monthly Output - Our facility houses 4 standardized assembly lines operating under lean manufacturing principles. With a monthly capacity of 50,000+ units, we ensure timely delivery for high-volume global wholesale orders.
Commercial System Workshop
High-Flow Commercial Systems | Adaptable to large-scale projects - Specially designed for large-scale commercial RO systems. Our engineering team ensures these units providing stable performance for offices, schools, and hospitals.
Advanced Testing & QC Center
Commitment to Quality | Testing at Every Stage - Prior to packaging, every single product undergoes rigorous performance testing. Our laboratory simulates extreme operating conditions--including 500 PSI burst tests and salt spray analysis--to ensure that our products maintain reliable operation for years to come, regardless of the climatic environment.
Filter Cartridge Workshop
3 Million Units Annual Capacity | 0.0001 μm Precision - Our filter production line utilizes medical-grade membranes and premium carbon. With an annual output of 3 million cartridges, we maintain strict control over the core filtration media to guarantee a 95%+ salt rejection rate.
