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Automatic Water Drainage
Helps rapidly drain residual water from the hose after shut-off.
Shower Vacuum Breaker
VB22520
Vacuum Breaker
Shower Vacuum Breaker
Product Description
The Shower Vacuum Breaker is a passive drainage device designed for shower hose systems. Installed between the shower mixer and hose, it automatically introduces air into the hose after the water supply is turned off, breaking the negative pressure and allowing residual water to drain naturally.
In conventional shower systems, water often remains trapped inside the hose after use, creating a damp environment that may contribute to moisture buildup, scale deposits, and biofilm formation over time. The Shower Vacuum Breaker helps reduce residual water retention, supports a drier hose environment, and promotes better shower hygiene management.
The device operates entirely mechanically, requiring no electricity and causing no noticeable impact on water pressure, flow rate, or shower performance. Installation is quick and simple, making it suitable for most standard shower systems.
By draining residual water in approximately 4 seconds after shut-off, the Shower Vacuum Breaker provides a practical solution for reducing water retention and maintaining a cleaner, drier shower environment.
Key Benefits
• Automatically drains residual water after shut-off
• Breaks negative pressure to promote drainage
• Helps reduce water retention inside shower hoses
• Supports a drier shower hose environment
• No electricity required
• Easy installation
• Compatible with most standard shower systems
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Hygiene details easily overlooked in daily showering
4
SEC
Break Vacuum in Pipe
Introduces air to help relieve internal pressure and standing water in the pipeline.
Reduce Standing Water
Reduces damp environments and standing water in hoses, making daily maintenance easier.
Five Key Design Features
Rapid Drainage
Helps drain residual water from the hose after shut-off.
Break Vacuum
Introduces air to help relieve negative pressure inside the hose.
Reduce Water Retention
Minimizes residual water and dampness inside the shower hose.
Improve Hygiene
Helps reduce damp environments and odor generation.
Extend Lifespan
Reduces long-term water retention and pressure stress on the hose.
* Drainage time and actual performance will vary depending on water pressure, faucet type, hose length, installation method, and on-site piping conditions. The ~4-second duration is a reference based on product testing and typical usage scenarios.
After turning off the water,
the problems are just beginning
After showering daily, residual water can remain trapped inside the hose for days, creating a damp environment and scale buildup that increases the risk of bacterial and biofilm growth.
Large amount of standing water remains
Residual water remains trapped inside the hose after shut-off.
Prolonged exposure to dampness
Trapped water keeps the hose interior damp, leading to standing water conditions.
Prone to scale & buildup
Mineral deposits can accumulate, forming scale and buildup.
Increased risk of odor & biofilm
Persistent dampness inside the hose may increase the likelihood of odor and biofilm formation.
Is your shower hose
truly dry?
Dry on the outside,
trapped water on the inside.
Residual water left behind after turning off the supply can become a source of dampness and scale accumulation.
1
Large amount of residual water remains inside the hose
2
Prolonged damp environments can lead to scale and grime buildup
3
Damp, stagnant environments may increase the risk of microbial growth
4
Standing water over time can create conditions for microbial adhesion
Chain Reaction Caused by Water Retention
🦠
Damp Environments & Microbial Attachment
Prolonged standing water and damp environments may increase the likelihood of microbial attachment and odor generation.
≋
Biofilm & Scale Buildup
Persistent internal moisture can make pipe walls more prone to accumulating scale, biofilm, and grime.
⚠
Accelerated Equipment Aging
Continuous exposure to residual water, scale, and pressure stress can accelerate hose hardening and wear.
Operating Principle (I)
Mode A
Normal Flow Mode
When showering is turned on:
Unimpeded Flow
The water supply flows steadily toward the showerhead.
Stable Discharge
Maintains a normal water supply and discharge under typical installation conditions.
No Impact on Shower Experience
- Water Pressure
- Flow Rate
- Shower Comfort
Normal Flow
During supply, water flows steadily through the vacuum breaker and is delivered normally to the showerhead.
Flow Direction Diagram
💧
Water Source
↓
Vacuum Breaker
↓
Showerhead
Operating Principle (II)
Mode B
Automatic Drainage on Shut-off
After turning off the water supply:
1
Pressure Relief
The pressure inside the hose drops rapidly.
2
Vacuum Breaking
Air is drawn into the shower hose automatically.
3
Gravity Drainage
Residual water is drained quickly with the help of gravity.
4
Dry Shower Hose
Water retention inside the hose is minimized after shut-off.
Vacuum Breaking
Air enters automatically, helping relieve negative pressure inside the hose.
4-Second Transition After Shut-off
Visible Difference
1
Water Shut-off
00:00
The instant the supply is shut off,
the hose remains full of trapped water.
2
Air Admission
00:01
Air enters via the vacuum breaker,
breaking negative pressure in the hose.
3
Falling Water Level
00:02
Residual water continues draining,
lowering the water level inside the hose.
4
Rapid Drainage
00:04
Fully drained in approx. 4 seconds,
keeping the hose interior drier.
Drains rapidly in approx. 4 seconds, helping minimize water retention and keeping the hose interior drier.
Installation Method
4 simple steps to protect your daily shower hygiene
1
Shower Mixer
When shut off, water flow stops at the mixer.
2
Vacuum Breaker
Installed between the mixer and hose to help drain residual water.
3
Shower Hose
Connects the vacuum breaker and showerhead; water and air flow through it.
4
Showerhead
The water discharge outlet; works exactly as usual during showering.
1
↓
2
↓
3
4
Installation Benefits
Maintains Water Pressure
Ensures smooth water flow during daily showering.
Steady Flow Rate
Provides a stable and comfortable water stream.
No Electricity Required
Operates entirely mechanically with no power supply needed.
Easy DIY Installation
Simple to install once connector compatibility is verified.
🛡 Recommended Installation Location: Between the mixer and the hose
System Upgrade Comparison: Traditional Equipment vs. Vacuum Breaker Module
Evaluation Dimension
Traditional Shower Systems
ERDEN Vacuum Breaker
Post-Shut-off State
≈
Residual water may remain trapped
Water is likely to remain stagnant inside the hose after use.
4SEC
Automatic drainage in approx. 4s
Helps drain remaining water to keep the hose interior drier.
Dampness & Moisture Risk
≋
Damp environment persists
Trapped moisture may increase the chance of odors and scale buildup.
🛡
Reduced standing water
Helps reduce prolonged dampness inside the shower hose.
Equipment Lifespan
⌁
Scale & water accumulation
Mineral deposits and constant dampness may increase maintenance needs.
◌
Helps minimize standing water
Helps reduce long-term water retention inside the hose.
Daily Maintenance
🛠
Requires regular cleaning
Frequent manual cleaning or periodic hose replacement is advised.
✦
Self-draining after every use
Provides passive drainage assistance for easier upkeep.
* Drainage time and actual performance will vary depending on water pressure, faucet type, hose length, installation method, and on-site piping conditions.
Cold Climate Solution
In cold regions such as Canada, Northern Europe, Hokkaido (Japan), Alaska, and high-altitude areas, water remaining inside a shower hose after use may freeze when temperatures drop below freezing. As water expands during freezing, it can place additional stress on hoses, fittings, and other plumbing components, potentially affecting normal operation and increasing maintenance costs.
The Shower Vacuum Breaker is installed between the shower mixer and the shower hose. After the water is turned off, it automatically breaks the vacuum inside the hose, allowing residual water to drain naturally. By reducing water retention, it helps minimize the possibility of freezing inside the hose while keeping the plumbing system drier.
With its purely mechanical design, the Shower Vacuum Breaker requires no electricity, no maintenance, and does not affect normal water pressure or flow rate. It is an ideal solution for homes, cabins, ski resorts, RVs, mobile homes, hotels, and other shower systems operating in cold climates.
Note: The Shower Vacuum Breaker helps reduce residual water inside the shower hose. Freeze protection performance may vary depending on ambient temperature, installation conditions, and system configuration.
Specification
- Specifications
- Product Name: Shower Vacuum Breaker
- Model No.: VB22520
- Material: ABS
- Installation Location: Between the shower mixer and shower hose
- Connection Size: G1/2" Standard Thread
- Compatible Systems: Standard Shower Systems
- Power Requirement: None
- Operating Principle: Automatic Vacuum-Break Drainage
- Drainage Time: Approximately 4 Seconds*
- (Actual performance may vary depending on hose length, installation position, and water pressure.)
〈When paired with an ozone generator, the unit will be supplied in stainless steel.〉
Features:
• Automatically drains residual water after shut-off
• Breaks negative pressure to promote drainage
• Helps reduce water retention inside shower hoses
• Supports a drier shower hose environment
• Does not affect normal water flow or shower performance
• No electricity required
• Easy installation
• Compatible with most standard shower systems
Important Notes:
The Shower Vacuum Breaker is designed to assist in draining residual water from shower hoses after use. Actual drainage performance may vary depending on installation conditions, hose configuration, water pressure, and site-specific factors.
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