APT-80H Horizontal Diaphragm Pressure Tank

80-Liter (20 Gallon) Pressure Tank for Booster Pump & ESP Water Systems Aquasky PumPlus Series | Made in Taiwan

APT-80H is designed for 10–14 person households and small apartment buildings, providing stable water pressure for showers, dishwashers, washing machines, and multi-bathroom usage.

APT-80H has a total volume of 80 liters (20 gallons). The tank is designed for a maximum operating pressure of 10 bar (150 psi) and a maximum operating temperature of 90 °C (194 °F). It is factory pre-charged to 2 bar (30 psi) for stable system performance.

With a diameter of 43.2 cm, a height of 46.63 cm and a height of 61.6 cm, the weight 12.8 kg design making installation quick and convenient while saving space.

APT-80H Liter 80 / Gal 20

Product Overview

The APT-80H is a 80-liter (20-gallon) horizontal diaphragm pressure tank designed for ESP booster pump systems using 1.5 HP to 2 HP motors. It stabilizes water pressure and reduces pump cycling.

APT-80H is ideal for regions with unstable or fluctuating municipal water pressure, widely used in homes and buildings where booster pumps are required. Its hygienic internal design, separate water from compressed gas and prevent water contact directly with the tank shell, ensures safe operation for cold sanitary water circuits, pressurized systems, and water storage applications. Its horizontal configuration makes it ideal for space-limited installations, pump skids, and compact residential booster systems

Manufactured with premium materials and certified . by NSF, CE, WaterMark, IAPMO, and other international bodies, APT-80H complies with global standards including those in the United States, Europe, Australia, and Asia. Produced in ISO-certified facilities, Aquasky pressure tanks delivers long service life, dependable performance, and safe drinking-water compatibility.

Certification

Specifications and Technical Data

Parameter Value
Model Number APT-80H
Total Tank Volume 80 liters / 20 gallons
Diameter 43.2 cm / 17.0 inch
Height (Base Included) 46.63 cm / 18.4 inch
Length 61.6 cm / 24.3 inch
Net Weight (NW) 12.8 kg / 28.2 lbs.
Gross Weight (GW) 14.3 kg / 31.5 lbs.
Shipping Volume 4.98 CUF
Operating Temperature 1 - 90°C / 34 - 194°F
Factory Pre-charge 2 bar | 30 psi
Max. Operating Pressure 10 bar | 150 psi
Connection 1” NPT / BSPT Stainless Steel
Liner Material Polypropylene
Diaphragm Material Butyl Rubber
Shell Cold Rolled Carbon Steel
External Coating Triple Grade Blue Paint
Pre-charge Gas 100% Nitrogen

Key Features & Design Advantages

  • Carbon steel shell construction
  • Triple-layer polyurethane & epoxy-coated exterior for rust protection
  • Stainless-steel water connection with patented leak-safe technology
  • High-performance variable-geometry butyl rubber diaphragm
  • Internal virgin FDA-approved polypropylene liner
  • Patented leakage-free O-ring sealed air valve cap 
  • 100% factory pre-charged with nitrogen (not regular air)
  • Reinforced wall bracket for inline models; engineered thermoplastic pump stand and replaceable tank base for vertical and horizontal models
  • High level of customization
  • 100% made in Taiwan
Materials & Design Advantages

How the Pumplus Pressure Tank Works

APT-80H stores supplemental water between the butyl rubber diaphragm and the polypropylene liner, while the nitrogen-filled air chamber maintains constant system pressure. When water demand occurs, the compressed nitrogen pushes water into the system at a controlled pressure.

This design ensures stable performance and supports reliable operation for showers, faucets, dishwashers, washing machines, and other fixtures.
 

Key benefits

  • Stabilizes water pressure for dependable flow
  • Reduces frequent pump starts and minimizes motor cycling
  • Extends pump lifespan and helps improve system reliability
  • Improves energy efficiency and reduces power consumption
  • Long service life with no routine maintenance

Typical Applications

  • Residential ESP booster pump systems (1.5 HP – 2 HP) 
  • Homes with 7-8 faucets running simultaneously
  • Compact pump rooms and horizontal mounting installations
  • Bathrooms, kitchens, and laundry systems 
  • Small public buildings and facilities

Frequently Asked Question (FAQ)

Q1 : Is a 80-liter (20-gallon) sufficient for a small apartment building?

A: Yes. A 80-liter (16-gallon) tank is generally sufficient for most small apartment homes with 10-14 people. The APT-80H can support 7-8 faucets running at the same time, provides stable water pressure for for multiple bathrooms and floors.

If you have 14-18 people, or frequent high-volume, simultaneous water usage -> Choose APT-100H. It supports 8-9 faucets at once and offers greater reserve capacity. 

Quick guide:
APT-80H: 10-14 people, 3-4-story, 7-8 outlets. 
APT-100H: 14-18 people, small apartment, 8-9 outlets. 

Q2 : Can I install the APT-80H myself (DIY)?

A: We strongly recommend having the APT-80H installed by a qualified plumber or technician for the following reasons:
Safety & Proper Setup: The APT-80H is a pressure vessel, and correct installation is critical. A professional will ensure:
• The pre-charge pressure is set correctly (typically 2 PSI below the system cut-in pressure).
• All pipe connections are properly sealed and leak-free.
• The installation location can safely support the unit's weight.

System Compatibility: The tank must be correctly integrated with your booster pump, pressure switch, and piping system to ensure stable performance and avoid operational issues.
Warranty Protection: Installation by a non-professional may affect your product warranty coverage.
A professional technician can typically complete the installation, testing, and calibration within 2–3 hours.

Q3 : Does the APT-80H require regular maintenance? How long should it be replaced?

A: The APT-88H is designed to be “maintenance-free”.

  • No regular maintenance required.
  • No filter elements or consumables need replacement.
  • No air recharging needed during normal use (we use 100% Nitrogen pre-charge, which won't leak like air).

Simply check the pre-charge pressure once every 1–2 years using a standard tire pressure gauge. If the pressure is low, you can refill the Nitrogen by yourself or ask a plumber to do it.

Service Life: Under normal operating conditions (water temperature ≤ 99°C, pressure ≤ 10 bar), APT-80H designed to last over 10 years. Many of our customers have used it for over 15 years with normal operation.

Warranty: We offer a 3-year factory warranty covering manufacturing defects and material flaws. 

Installation Tip: Ask your plumber to measure your water pressure during installation and recommend the most suitable system configuration.

Customized Colors & Packaging

We offer a wide range of customization options to match your exact needs - from custom colors to branded packaging and logo design. 

Watch our video to explore the possibilities and see how we help your products stand out in the market.

Downloads & Certification Links

PUMPLUS Pressure Tank Blue
PUMPLUS Pressure Tank Blue

Collection of all relevant product certifications.

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