---
product_id: 4324323
title: "WaterWorker 25009 20Gal Vertical Well Tank, 20 Gallon, Blue"
brand: "water worker"
price: "4493 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Water Worker"
url: https://www.desertcart.dk/products/4324323-waterworker-25009-20gal-vertical-well-tank-20-gallon-blue
store_origin: DK
region: Denmark
---

# 20 Gallon capacity Pre-charged 25 PSI for pump efficiency NSF certified & corrosion-resistant WaterWorker 25009 20Gal Vertical Well Tank, 20 Gallon, Blue

**Brand:** water worker
**Price:** 4493 kr
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your water system with efficiency and durability that lasts decades!

## Quick Answers

- **What is this?** WaterWorker 25009 20Gal Vertical Well Tank, 20 Gallon, Blue by water worker
- **How much does it cost?** 4493 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/4324323-waterworker-25009-20gal-vertical-well-tank-20-gallon-blue)

## Best For

- water worker enthusiasts

## Why This Product

- Trusted water worker brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Yet Powerful:** Vertical 20-gallon tank fits tight spaces while delivering superior drawdown compared to larger galvanized tanks.
- • **Pure Water, No Compromise:** Polypropylene liner prevents taste and odor contamination, ensuring clean, fresh water every time.
- • **Certified Quality Assurance:** NSF/ANSI Std 61 listing guarantees compliance with strict health and safety standards for potable water systems.
- • **Built to Last, Built to Perform:** Durable alloy steel shell with a high gloss enamel finish resists corrosion and weather damage for decades of reliable use.
- • **Maximize Pump Life & Efficiency:** Pre-charged diaphragm design reduces pump cycles by up to 3x, saving energy and extending pump lifespan.

## Overview

The WaterWorker 25009 is a 20-gallon vertical well tank featuring a pre-charged butyl diaphragm that separates air and water to prevent waterlogging and reduce pump cycling. Constructed with a corrosion-resistant alloy steel shell and a polypropylene liner, it ensures clean water without taste or odor contamination. NSF certified and designed for easy installation in tight spaces, this tank offers superior drawdown capacity, energy savings, and extended pump life compared to traditional galvanized tanks.

## Description

Product Description The WaterWorker pre-charged tanks utilize a butyl composite diaphragm, which flexes up and down based on water level and air pressure, as the pump fills the tank with water the air above the diaphragm is compressed, increasing the pressure in the tank until the pump cut-off pressure is reached. When water is drawn from the tank, the pressure inside the tank decreases until the pressure switch starts the pump. The amount of usable water for every pump cycles is called drawdown. The greater drawn-down capacity you select, the less your pump cycles saving energy, money, and extending your pump life. Advantages over galvanized well tanks: Pre-charged tanks do not have water-logging problems like the galvanized tanks. The air and water are totally separated using a diaphragm. No external air controls needed. Pre-charged tanks have a much larger draw-down for the same physical size. Larger draw down reduces pump cycles and pump wear, i.e. at 30/50 PSIG range three times the draw-down for pre-charged tanks of the same physical size. Pre-charged Tanks completely empty during each pump cycle. Pre-charged Tanks are much smaller and easier to handle that galvanized well tanks. Pre-charged tanks with a 30/50 Pressure Switch would be one-third the size of a galvanized tank with the same drawdown. Deep Well Jet Pumps could use either a vertical tank or a horizontal tank, depending on space requirements and sizing. Submersible Pump applications would usually use vertical tanks, again based on proper sizing. Shallow Well Jet Pumps could use vertical or horizontal tanks, based on proper sizing. The rule of thumb in sizing is to count the number of fixtures in the home, i.e. sinks, showers, toilets, dishwasher, faucets, washing machines, outside faucets, etc. and multiply it by 3. Example: a house with 11 fixtures x 3 would be 33-Gallon tank. We would suggest our 44-Gallon tank, which is the next larger sized tank.This is a Hazmat non-returnable item From the Manufacturer The WaterWorker pre-charged tanks utilize a butyl composite diaphragm, which flexes up and down based on water level and air pressure, as the pump fills the tank with water the air above the diaphragm is compressed, increasing the pressure in the tank until the pump cut-off pressure is reached. When water is drawn from the tank, the pressure inside the tank decreases until the pressure switch starts the pump. The amount of usable water for every pump cycles is called drawdown. The greater drawn-down capacity you select, the less your pump cycles saving energy, money, and extending your pump life. Advantages over galvanized well tanks: Pre-charged tanks do not have water-logging problems like the galvanized tanks. The air and water are totally separated using a diaphragm. No external air controls needed. Pre-charged tanks have a much larger draw-down for the same physical size. Larger draw down reduces pump cycles and pump wear, i.e. at 30/50 PSIG range three times the draw-down for pre-charged tanks of the same physical size. Pre-charged Tanks completely empty during each pump cycle. Pre-charged Tanks are much smaller and easier to handle that galvanized well tanks. Pre-charged tanks with a 30/50 Pressure Switch would be one-third the size of a galvanized tank with the same drawdown. Deep Well Jet Pumps could use either a vertical tank or a horizontal tank, depending on space requirements and sizing. Submersible Pump applications would usually use vertical tanks, again based on proper sizing. Shallow Well Jet Pumps could use vertical or horizontal tanks, based on proper sizing. The rule of thumb in sizing is to count the number of fixtures in the home, i.e. sinks, showers, toilets, dishwasher, faucets, washing machines, outside faucets, etc. and multiply it by 3. Example: a house with 11 fixtures x 3 would be 33-Gallon tank. We would suggest our 44-Gallon tank, which is the next larger sized tank.This is a Hazmat non-returnable item

Review: Great quality well tank and amazing price - Way cheaper than big box stores. Good quality tank and works fantastic. Should last another 30 years.
Review: Quick shipping. - Easy to connect. Versatile. Built strong. Fits well into old space. Good seal with 10 inch T fitting

## Features

- Designed to meet the requirements of, and are listed by the National Sanitation Foundation (NSF) under ANSI/NSF Std 61
- The Butyl diaphragm has seamless construction and is designed to flex rather than stretch and crease like bladder tanks
- The polypropylene liner for the water reservoir will not flake, chip, crack or peel and does not impart taste and odor to the water
- Diaphragm, liner isolate water from contact with deep drawn steel domed shell - twice as strong as rolled steel shell of same thickness
- A high gloss enamel finish protects tank from the elements
- Pre-charged to 25psi: please refer to product manual for proper pre-charge setting

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Water Worker |
| Capacity | 20 Gallons |
| Color | Blue |
| Item Weight | 12.2 Kilograms |
| Material | Alloy Steel |
| Product Dimensions | 15"L x 15"W x 32"H |

## Product Details

- **Brand:** Water Worker
- **Capacity:** 20 Gallons
- **Color:** Blue
- **Material:** Alloy Steel
- **Product Dimensions:** 15"L x 15"W x 32"H

## Images

![WaterWorker 25009 20Gal Vertical Well Tank, 20 Gallon, Blue - Image 1](https://m.media-amazon.com/images/I/71o5DQ2wVRL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quality well tank and amazing price
*by M***D on August 25, 2025*

Way cheaper than big box stores. Good quality tank and works fantastic. Should last another 30 years.

### ⭐⭐⭐⭐⭐ Quick shipping.
*by A***R on May 28, 2025*

Easy to connect. Versatile. Built strong. Fits well into old space. Good seal with 10 inch T fitting

### ⭐⭐⭐⭐⭐ Works good
*by B***T on September 29, 2025*

Works great just what I needed.

## Frequently Bought Together

- WaterWorker Water Worker-HT20B
- 1"x 11"Well Pressure Tank Tee Kit with 40/60psi Pressure Switch,Brass Pressure Tank Installation Kit for Water Well, Fit Most pressure tanks with diameters up to 16 Inch
- Merrill MFG CVNL100 1" No-Lead Brass Check Valve 700 Series, 1"

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-30*