As Amazon Associates, we earn from qualifying purchases. This means we may receive a small commission at no extra cost to you if you click through and make a purchase.
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
This apec water tank 20 reverse osmosis water review focuses on the APEC Water TANK-20, a pre-pressurized storage unit designed for RO systems. It holds up to 14.8 gallons of purified water within its 20-gallon rated capacity. The tank measures 32 inches in height and 16 inches in width. Its white, food-grade bladder ensures safety and durability. The unit features a 3/4 inch male pipe thread for standard RO connections. You can install it vertically or horizontally using a tank stand. This model is one of four size options available, including smaller 3, 4, and 14-gallon variants. It is built for consistent water delivery without electricity.
- Pre-pressurized bladder holds up to 14.8 gallons of water
- Food-grade bladder certified for safety and durability
- Fits vertical or horizontal installation with a stand
- 3/4 inch male pipe thread for RO systems
Good fit for
You should choose this tank if you need a high-capacity storage solution for a residential reverse osmosis system. The 20-gallon model suits households with higher water usage or those who want to minimize the frequency of RO cycles. Its ability to sit horizontally allows for flexible placement in tight under-sink cabinets or larger utility spaces. The pre-pressurized design ensures steady water pressure without requiring a booster pump. It is ideal for users who prioritize simple, reliable storage over smart features.
Who can skip it
You should look for another option if your under-sink cabinet is too small to accommodate a 32-inch tall tank. The 16-inch width also requires adequate clearance for installation and maintenance. If you need a compact, low-profile tank, consider the 4-gallon or 3-gallon variations listed as alternatives. This model does not include a stand, so you must purchase one separately for horizontal use. It is also not suitable for setups requiring immediate high-flow demand, as RO systems fill tanks slowly.
Verdict
The APEC Water TANK-20 is a robust, high-capacity storage tank for homes needing reliable RO water reserves. Its flexible orientation and food-grade materials make it a practical choice for standard residential installations.
01 Key specs explained
20 Gallons
This rating indicates the total internal volume of the tank. You should know that the actual usable water capacity is lower. The listing states it holds up to 14.8 gallons of purified water. This difference accounts for the air pressure needed to push water out. You need enough storage to match your RO system output. This size suits households with moderate daily water usage.
3/4 inch male pipe thread
This defines the connection size for your plumbing lines. A 3/4-inch thread is standard for many reverse osmosis systems. It ensures a secure fit to prevent leaks under pressure. You must check your existing system fittings before buying. If your lines are smaller, you will need adapters. This spec guarantees compatibility with most standard RO setups.
32 inches
This is the vertical height of the tank unit. You need at least 32 inches of clear space in your cabinet. Measure the available area carefully to ensure it fits. The listing notes other height options like 14.5 inches exist. You might choose a shorter tank if you have low clearance. Always verify your cabinet dimensions before installation to avoid issues.
16 inches
This measurement represents the width and length of the tank base. You need a circular footprint with a 16-inch diameter. This width affects how the tank sits in tight spaces. You must ensure surrounding pipes do not block this area. Compare this footprint with other tanks if space is limited. A wider base provides stability but requires more cabinet floor space.
Pre-pressurized
The tank comes with air pressure already set inside. This feature simplifies your installation process significantly. You do not need to charge it manually before connecting water. It is ready to accept purified water from your RO unit. This saves time during setup. You should still check the pressure before final connection. Proper pre-pressurization ensures efficient water delivery and system performance.
02 Design and build details
The APEC Water TANK-20 features a white exterior with a food grade bladder inside. This material choice ensures safety and durability for storing drinking water. The listing confirms the bladder meets quality standards for direct contact with purified water. You do not need to worry about material leaching into your supply. The unit measures 16 inches in width and length, with a height of 32 inches. This cylindrical shape allows for stable placement in tight spaces under a sink or in a utility closet. The compact footprint helps you fit the tank into standard cabinet layouts without requiring excessive clearance. You can position the tank vertically or horizontally. This flexibility supports various installation scenarios. If you use a tank stand, you can discharge water efficiently in either orientation. This design adapts to your specific plumbing constraints. The inlet and outlet connections use a 3/4 inch male pipe thread. This size is special designed for RO applications. You will need compatible fittings to connect the tank to your reverse osmosis system. The pre-pressurized nature of the tank means you do not need to add air pressure manually upon setup. The white finish is simple and easy to clean. It blends into most utility areas without drawing attention. The build focuses on function rather than aesthetics. You get a reliable storage solution that prioritizes water quality and ease of installation. The specifications indicate a robust construction suitable for long term use. You can rely on the listed dimensions for planning your under-sink or pantry space. The 3/4 inch threads ensure a secure connection to standard RO lines. This reduces the risk of leaks at the connection points. The design is straightforward and practical for everyday home use.
03 Setup and daily operation details
Installing the APEC Water TANK-20 requires attention to its specific connection type. The inlet and outlet use a 3/4 inch male pipe thread. You must ensure your reverse osmosis system lines match this size. The listing notes this design is special for RO applications, so standard plumbing fittings may not align without adapters. Once connected, the tank is pre-pressurized. This feature simplifies initial setup by reducing the need for immediate pressure checks before filling. You can place the unit vertically or horizontally. Using a tank stand helps maintain stability in either position. The dimensions are 16 inches wide, 16 inches long, and 32 inches high. These measurements dictate the space you need in your under-sink cabinet or utility area. The white exterior blends into most storage spaces. Daily use relies on the internal food grade bladder. This component separates water from air pressure, ensuring only purified water contacts your drinking supply. The bladder is certified for safety and durability. You receive up to 14.8 gallons of usable water from the 20-gallon rated capacity. This usable amount is determined by the air pressure ratio inside the vessel. When you open a faucet, water flows out as air pressure expands the bladder. The system refills automatically when pressure drops. This cycle continues as long as your RO unit produces water. The horizontal or vertical placement does not change the discharge efficiency. You simply need a stable base. The pre-pressurized nature means you do not need to add air manually upon unboxing. This saves time during the initial installation phase.
04 Before You Buy This Tank
You need to verify your RO system’s output rate matches this tank’s refill speed. A slow membrane will leave the tank empty for long periods. Check that your plumbing includes a 3/4 inch male pipe thread adapter. If your lines are different, you must buy fittings separately. The tank weighs more than smaller 4 or 14 gallon versions. Ensure your cabinet or under-sink space can support the 32 inch height and 16 inch width. You may also need a dedicated tank stand if you place it horizontally. This unit fits best in homes with high daily water usage. Smaller households might find the 20 gallon capacity excessive compared to compact alternatives. Regularly check the air pressure valve to maintain efficiency. The food grade bladder requires no special cleaning, but inspect connections for leaks monthly. This tank is a solid choice if you prioritize volume over space saving.
Check before you buy
- Confirm your RO system has a 3/4 inch male pipe thread connection.
- Measure your cabinet space to ensure it fits the 32 inch height.
- Check if you need a tank stand for horizontal installation.
- Verify your membrane flow rate can fill the tank efficiently.
APEC Water 20 Gallon RO Storage Tank
Best for: high capacity storage with vertical clearance
- Dimensions
- 16 × 16 × 32 inches
The APEC Water TANK-20 is a 20-gallon reverse osmosis storage tank with a 16 by 32 inch footprint. It holds up to 14.8 gallons of water thanks to its pre-pressurized design. The food grade bladder ensures safety. You can install it vertically or horizontally using a stand. The 3/4 inch male pipe thread fits standard RO systems.
- 20 gallon total capacity holds 14.8 gallons of water
- Pre-pressurized bladder for efficient discharge
- Food grade bladder certified for safety
- 3/4 inch male pipe thread connection
- Large 32 inch height requires significant vertical space
- 16 inch width and length creates a bulky footprint
- Limited to 14.8 gallons usable water volume
- You need high volume water storage for a household
- You have ample vertical clearance for a 32 inch tank
- You prefer a pre-pressurized system for consistent pressure
- You have limited space under your sink
- You require a compact tank under 20 inches tall
- You need more than 14.8 gallons of usable water
Verdict: APEC Water TANK-20 20 Gallon RO Tank fits homes needing high capacity storage and having the vertical space to accommodate its 32 inch height.
05 Specifications side by side
| Spec | APEC Water 20 Gallon RO Storage Tank |
|---|---|
| Dimensions | 16 × 16 × 32 inches |
| Size | 20 Gallons |
| Color | White |
| Model | TANK-20 |
06 Frequently asked questions
What are the exact dimensions of the APEC Water TANK-20?
The APEC Water TANK-20 measures 16 inches in width, 16 inches in length, and 32 inches in height. Its vertical design requires adequate overhead clearance for installation. You must ensure your under-sink cabinet or utility space can accommodate this specific footprint and height to fit the unit properly.
How much actual water does the 20-gallon tank hold?
Although rated at 20 gallons, the tank holds up to 14.8 gallons of purified water. The difference accounts for the internal air pressure bladder. This usable capacity is sufficient for most households needing reliable storage for daily drinking and cooking needs without frequent refills.
What type of connection does the APEC TANK-20 use?
The inlet and outlet ports feature 3/4 inch male pipe threads. You must verify that your reverse osmosis system lines match this specific thread size. If your existing plumbing uses different connectors, you will need appropriate adapters to ensure a secure and leak-free installation.
Is the APEC Water TANK-20 suitable for vertical installation?
Yes, the tank is designed for vertical placement. Its 32-inch height requires sufficient vertical clearance in your installation area. This form factor makes it ideal for spaces where floor space is limited but overhead room is available, such as tall under-sink cabinets or dedicated utility closets.
What is the color of the APEC Water TANK-20?
The exterior of the APEC Water TANK-20 is white. This neutral color helps the unit blend into most kitchen or utility room environments. The white finish is applied over a food-grade bladder that ensures safe storage of purified drinking water for your household.
What is the model number for this APEC storage tank?
The model number for this unit is TANK-20. This identifier helps you locate the correct replacement parts or compatible accessories. Using the exact model number ensures you purchase components that fit the 20-gallon capacity and specific connection types of this specific APEC Water storage solution.
