Max Water NSF Certified Heavy Duty 4.4 Gallon @100 PSI RO (Reverse Osmosis) Water Storage Tank, PA-E RO-132 + Valve
Max Water NSF Certified Heavy Duty 4.4 Gallon @100 PSI RO (Reverse Osmosis) Water Storage Tank, PA-E RO-132 + Valve
Couldn't load pickup availability
- 24/7 Customer Support
- Risk-Free 30-Day Returns
- Fast & Reliable U.S. Shipping
Contact Information
Contact Information
30-Day Hassle-Free Returns
30-Day Hassle-Free Returns
Not satisfied? Return your order within 30 days for a full refund or exchange — simple and easy.
✔ Easy return process
✔ Fast refunds
✔ No hidden conditions
Fast U.S. Shipping
Fast U.S. Shipping
We ship within the United States only — no international delays.
✔ Processing time: 1–2 business days
✔ Delivery time: 3–7 business days
✔ Real-time tracking available
👉 Track your order anytime from the header via Track Order
About This
- Heavy Duty & Durable Construction: Max Water NSF Certified tanks are built for long-lasting use. With a max working pressure of 100 PSI and a smooth internal air vent cap to prevent diaphragm damage, the tank provides reliable water storage. Pre-charged at 6 PSI for convenience.
- Safe, BPA-Free Materials: Made with food-grade, BPA-free plastic components that meet industry standards. Designed to store water safely and reduce potential exposure to plastic contaminants.
- Quality Tested: Every tank undergoes rigorous quality checks to ensure it meets industry standards for safe and durable water storage.
- Versatile Applications: Equipped with a 1/4" stainless steel connection compatible with Reverse Osmosis water storage tanks, pump tanks, and thermal tank applications.
- Optimal Storage & Space-Saving Design: Holds approx. 4.4 gallons at 100 PSI (3.2 gallons at 60 PSI). Tank measures 10.5" diameter × 13.5" height (15.75" with valve & base), making it ideal for most under-sink residential RO installations. Actual water output depends on incoming pressure and RO system efficiency. Typical delivery ~3.2 gallons at 60 PSI.
- Designed to Outperform Standard Tanks: Compared with typical water storage tanks, Max Water tanks offer stronger materials, improved diaphragm protection, and better pre-charged readiness—providing a more reliable and long-lasting solution.
- Replacement 1/4" Tank Ball Valves are available separately — search ASIN: B07DRPW4B7 on Amazon.
- Why Max Water : We have 15+ years of experience in water filtration industry providing solution with a smile to millions of families. Make Max Water your solution to all your filtration needs.
Overview
- Brand : Max Water
- Special Feature : Built for heavy duty usage.
- Product Dimensions : 11"L x 11"W x 14"H
- Material : Stainless Steel
- Capacity : 4.4 gallons
- Included Components : Tank with Stand and Valve
- Package Information : Bottle
- Installation Type : Under Sink
- Purification Method : Reverse Osmosis
- Power Source : Manual Operation

Experience the difference clean, softened water makes in your daily life — from healthier skin to better tasting drinking water.
👉 Softer skin and smoother hair with every shower.
👉 Prevent scale buildup and keep your appliances running efficiently.
👉 Softer, brighter clothes that last longer with every wash.
See the Difference in Your Water — Instantly
Hard water, chlorine, and hidden contaminants can affect your health, skin, and appliances.
Our advanced filtration system removes impurities and delivers clean, safe water throughout your entire home.
Feel the difference in every drop — from your kitchen to your shower.
FAQ
Water Filtration & Home Water Guide