Water Collection Tank for Dehumidifiers - Specifications and Parameters

Product Specifications

Technical details and manufacturing context for Water Collection Tank

Definition

The water collection tank is an essential component of a dehumidifier that serves as a reservoir for the moisture removed from the air during the dehumidification process. It collects the water condensed from the air by the cooling coils and stores it until manually emptied or automatically drained. This tank is typically made of polypropylene (PP) or acrylonitrile butadiene styrene (ABS), materials chosen for their durability and resistance to water and chemicals. The tank's capacity for residential dehumidifiers typically ranges from 5 to 20 liters, depending on the model and intended use. Operating pressure is specified between 1.0 and 1.6 MPa, and this parameter is referenced against. The operating temperature range is 5 to 50°C, with a caution that above 50°C deformation may occur. The relative humidity range for efficient condensation is 30 to 90% RH, as efficiency drops below 30%. The leakage rate is specified as ≤0.05 mL/min, ensuring no water loss, also. Material grade is PE-HD, which is food-grade and UV-resistant, per DIN 4102. Wall thickness ranges from 2.0 to 3.5 mm, with thicker walls for higher pressure applications. The weight of the tank depends on capacity and wall thickness, typically between 0.8 and 2.5 kg. The IP rating is IP54 to IP65, with IP65 suitable for outdoor use, per IEC 60529. The connection diameter matches standard drain hoses, ranging from 15 to 25 mm. These parameters are typical ranges and must be verified for the specific model and application with the legal manufacturer or supplier. The tank is designed to be easily removable for emptying and cleaning, and it may include features such as a float switch or sight glass to indicate when it is full. Proper maintenance includes regular cleaning to prevent mold or bacterial growth, and checking for cracks or leaks. The tank's performance is critical to the overall efficiency of the dehumidifier, as a full tank can cause the unit to shut off or leak. Always consult the manufacturer's specifications for exact values and standards compliance.

Working Principle

As moist air passes through the dehumidifier's cooling coils, water vapor condenses into liquid water due to temperature reduction. This condensed water drips down from the coils into the water collection tank below, where it accumulates until the tank reaches capacity or is emptied. The tank is positioned to capture the drips efficiently, and its design ensures that water is contained without leakage. The condensation process is driven by the temperature difference between the air and the coils, and the tank's capacity determines how often it needs to be emptied. The tank may be equipped with a float or sensor to indicate when it is full, triggering an alarm or automatic shutoff. The working principle is straightforward: the tank provides a storage volume for the water that is extracted from the air, allowing the dehumidifier to operate continuously until the tank is full. The efficiency of condensation depends on the relative humidity and temperature of the incoming air, as well as the design of the cooling coils. The tank's material and construction must withstand the operating conditions, including pressure and temperature, without deformation or leakage. Regular maintenance, such as cleaning and inspection, ensures that the tank continues to function properly over time.

Common Materials

Polypropylene (PP), Acrylonitrile Butadiene Styrene (ABS)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Capacity	5–20 L	Typical range for residential dehumidifiers
Operating Temperature	5–50 °C	Above 50°C may cause deformation
Relative Humidity	30–90 % RH	Condensation efficiency drops below 30%
Leakage Rate	≤0.05 mL/min	Ensures no water loss
Material Grade	PE-HD	Food-grade, UV-resistantDIN 4102
Wall Thickness	2.0–3.5 mm	Thicker for higher pressure
Weight	0.8–2.5 kg	Depends on capacity and wall thickness
IP Rating	IP54–IP65	IP65 for outdoor useIEC 60529
Connection Diameter	15–25 mm	Matches standard drain hose

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Tank Body Part
Main container that holds collected water

Material: Polypropylene (PP)
Lid/Cover Part
Prevents evaporation and contamination, often includes handle

Material: Polypropylene (PP)
Float Switch
Detects when tank is full and triggers dehumidifier shutdown

Material: Plastic with metal contacts
Drain Outlet Optional Part
Optional connection for continuous drainage hose

Material: Plastic

Application & selection

Application Fit & Sizing Matrix

Operational Limits

pressure:	Atmospheric to 0.5 bar (7.25 psi) gauge pressure
other spec:	Flow rate: Up to 2 L/h (0.53 gal/h) typical dehumidifier output; Slurry concentration: Not applicable (clean water only)
temperature:	0°C to 50°C (32°F to 122°F)

Media Compatibility

✓ Condensed water (dehumidifier output) ✓ Potable water storage ✓ Non-corrosive aqueous solutions

Unsuitable: Chemical processing environments with aggressive solvents or acids

Sizing Data Required

Daily water collection volume (L/day)
Dehumidifier unit capacity (L/day)
Required storage duration (days)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause

Corrosion-induced leakage

Cause: Chemical attack from stored water (e.g., chlorides, pH imbalance) or atmospheric exposure, leading to material degradation and perforation, especially at weld seams and bottom plates.

Structural fatigue cracking

Cause: Cyclic loading from water level fluctuations, thermal expansion/contraction, or vibration from connected piping, causing stress concentration at joints or supports.

Maintenance Indicators

Visible rust streaks, weeping, or pitting on tank walls, particularly near welds or the waterline.
Unusual audible creaking, groaning, or cracking noises during filling/draining cycles, indicating stress or movement.

Engineering Tips

Implement routine internal/external coating inspections and cathodic protection for metallic tanks to combat corrosion; use non-corrosive materials (e.g., fiberglass, lined steel) in aggressive environments.
Install overflow/level controls to minimize water level swings, add flexible connections to piping to reduce stress, and conduct periodic ultrasonic thickness testing to monitor wall integrity.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards

ANSI/NSF 61 - Drinking Water System Components DIN 1988-100 - Technical Rules for Drinking Water Installations

Quoted from the published standard.

Manufacturing Precision

Wall Thickness: +/- 0.5mm
Circularity: +/- 2mm diameter tolerance

Quality Inspection

Hydrostatic Pressure Test
Visual and Dimensional Inspection

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Water Collection Tank

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Hebei Yongchang Composite Material Technology Co., Ltd.

Hebei, CN

Also makes: Collection Tank, Storage Tank, Cable Management Duct and 4 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “FRP/GRP Waste Water Collection Tank”
View source page ↗ yongchangfrp.com · recorded 2026-08-26

View profile Send enquiry

Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.

Frequently Asked Questions

What is the typical capacity of a water collection tank for residential dehumidifiers?

The typical capacity range is 5 to 20 liters, as listed in the specifications. However, the exact capacity depends on the specific dehumidifier model and its intended use. Always check the manufacturer's data for the precise capacity.

What materials are commonly used for water collection tanks?

Common materials include polypropylene (PP) and acrylonitrile butadiene styrene (ABS). The material grade specified is PE-HD, which is food-grade and UV-resistant. These materials are chosen for their durability and resistance to water and chemicals.

What is the operating pressure range for this tank?

This parameter is referenced against. Verify the exact pressure rating for your specific model.

How should I maintain the water collection tank?

Regular maintenance includes emptying the tank when full, cleaning it periodically to prevent mold or bacterial growth, and inspecting for cracks or leaks. Also, check the connection diameter and ensure it matches the drain hose. Follow the manufacturer's instructions for cleaning and care.

Related equipment

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Dehumidifier

View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems

Downstream Applications

Specialized Tooling

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 13 October 2026

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