Pipe stopper balloons : definition, professional applications and expert guide
On site, during emergency work or testing phases, there is a tool that saves time, prevents leaks and secures interventions: the inflatable pipe stopper (also known as a pipe plug or pipe testing balloon).
This compact yet powerful tool plays a key role in controlling and isolating pipe networks. It allows temporary sealing of a pipe to block flow, perform a leak or pressure test, or work on a section without draining the entire system.
As field professionals know, mastering temporary sealing is critical for both safety and operational efficiency. At Fluotracking, we support plumbers, drain technicians, utilities and industrial operators with high-performance, reliable and field-proven pipe stopper solutions.
This expert guide covers everything you need to know about pipe stopper balloons: technical definition, key applications, selection criteria, safety guidelines and expert usage tips from real-world experience.
What is an inflatable pipe stopper ?
A pipe stopper balloon is a flexible inflatable device designed to temporarily seal the inside of a pipe. It blocks the passage of a fluid — water, air, gas, sludge or chemicals — in a watertight and secure manner without damaging the pipework.
Technically, a pipe stopper is made up of :
- A flexible rubber or reinforced polymer body (usually PVC, EPDM or neoprene), resistant to pressure and chemical exposure.
- A Schrader or industrial inflation valve, allowing inflation with a manual pump or air compressor.
- Optionally, an integrated bypass, allowing controlled fluid passage during testing or when flow interruption is not required.
The principle is simple yet powerful: once inserted into the pipe (wet or dry), the stopper is inflated to the recommended pressure. It conforms perfectly to the pipe wall and forms a secure, tight seal.
This solution is non-invasive, reversible, versatile and extremely quick to install, avoiding heavy dismantling or full network shutdowns.
Professional applications : where, when and why to use pipe stopper balloons
1. Pipe stopper balloons in plumbing
In plumbing operations, whether domestic or industrial, a pipe stopper enables targeted intervention on a specific section without draining the entire network.
For example, when replacing a trap, joint or waste pipe, insert a small inflatable plug into the targeted section, inflate it, and work safely and dry. This prevents wastewater backflow, odours and contamination, allowing a clean, quick and localised repair.
This is particularly useful in occupied environments (homes, hotels, offices), where shutting down entire systems is not feasible.
For air tests, use a smoke generator to instantly locate leaks. For simple visual tracing, fluorescent or non-fluorescent dyes are highly effective.
2. Pipe stopper balloons for drainage and sewer testing
Air and fluorescein leak tests have become essential when commissioning new drainage systems. The pipe stopper balloon plays a central role here.
It is used to seal both ends of a pipe section, creating a closed volume. Then, air pressure or a tracer dye such as fluorescein is injected to verify network integrity and detect leaks, cracks or faulty joints.
At Fluotracking, we supply pipe stoppers designed specifically for such tests — high-pressure resistant and compatible with chemical tracers. These tests ensure compliance with standards such as EN 1610 and French technical guideline Fascicule 70.
For dye tracing, use our UV-compatible tracing liquids and view results under 365 nm UV lamps.
3. Pipe stopper balloons in construction and civil engineering
On construction sites, during infrastructure work or pipe rehabilitation, some network sections are installed but not yet connected. To prevent unwanted water ingress, these sections are sealed with inflatable stoppers.
The goal: prevent water stagnation, site contamination, or ground instability caused by uncontrolled inflows.
The stopper is often used preventively, sometimes for several weeks, to maintain pipeline integrity during construction. It protects trenches, manholes and temporary installations, ensuring site cleanliness and safety until final connection.
For large-scale applications, use our FS200 smoke generator for long-lasting smoke visibility.
4. Industrial use of pipe stopper balloons
In industrial environments (chemical, petrochemical, food processing, water treatment), networks often carry pressurised or corrosive fluids.
During maintenance or valve replacement, it is rarely possible to shut down the entire system. In these cases, an inflatable pipe plug isolates a specific branch, prevents cross-contamination, and ensures operator safety.
Fluotracking industrial-grade stoppers are built with materials compatible with aggressive media and extended pressure ranges, guaranteeing durability and reliability in demanding conditions.
5. Emergency interventions
When crisis strikes — a burst pipe, active leak, blockage or sudden backflow — quick action is vital.
The inflatable pipe stopper provides an immediate emergency solution to stop the flow before permanent repair. It saves time, reduces damage, limits contamination and can even prevent serious flooding or infrastructure loss.
In emergencies, ease of use is key: simply access the opening, insert the stopper, inflate it, and flow is stopped within seconds.
For leak confirmation, use the LUX 60 + UV kit for accelerated diagnosis.
How to choose the right pipe stopper: professional guide
1. Pipe diameter and compatibility
The first factor to consider is the internal pipe diameter. Each stopper is designed for a specific range, e.g. DN 50–100 mm, DN 100–200 mm, etc.
A stopper that is too small will not ensure a proper seal; one that is too large may not fit or could get stuck.
At Fluotracking, every stopper is clearly labelled with its compatible range, and our experts help you choose the best match for your network (PVC, cast iron, HDPE, concrete, etc.).
2. Type of fluid to contain : water, air, gas or chemicals
The type of fluid you intend to block or test also determines the stopper required :
- Water (clean or wastewater): standard models are suitable.
- Air or gas: choose a high-pressure-resistant model with reinforced fittings.
- Chemical or aggressive fluids: opt for EPDM, neoprene or nitrile rubber materials.
We advise you according to the fluid nature, temperature, viscosity and intended sealing duration. For aqueous tracing, use fluorescein for clear, visible tracking.
3. Solid vs. bypass stopper
A solid pipe stopper blocks flow completely — ideal for isolating sections before maintenance or leak repair.
A bypass stopper features a central passage (often threaded) that allows controlled flow of air, water or tracer dyes. This is essential for fluorescein or smoke leak tests.
We offer both types, with various bypass diameters compatible with your existing fittings.
For controlled fluid flow, choose a DN50 through-bypass stopper.
4. Safety and usage precautions
Pipe stopper balloons are technical devices that require careful handling. Follow these essential rules :
- Always inspect the stopper visually before use.
- Ensure the pipe is free from sharp debris or rough edges.
- Never exceed the recommended inflation pressure.
- Use a pressure gauge for continuous monitoring.
- Inflate only once in position, never outside the pipe.
Fluotracking tip: When working on pressurised or loaded systems, use an external restraint system (chain, rope, threaded cap) to prevent unintentional displacement.
Why choose Fluotracking pipe stopper balloons ? Expertise, reliability and professional support
Tested and certified professional equipment
Our inflatable pipe stoppers are built to withstand the most demanding field conditions :
- Accurate diameter ranges (DN30 to DN1200 and beyond on request)
- High resistance to internal pressure, heat, chemicals and aggressive fluids
- Made from reinforced industrial-grade rubber, PVC, EPDM or neoprene
Each model is tested in real-life conditions before distribution. No surprises on site — only reliable, certified equipment.
For UV testing, use UV COLOR Green or UV COLOR Blue for optimal contrast.
A complete range for every need
Our catalogue covers every professional scenario :
- Solid stoppers for complete sealing
- Bypass models for testing or controlled flow
- Testing plugs for smoke or fluorescein leak detection
- Inflation accessories (manual pumps, fittings, pressure gauges)
- Multi-diameter balloons for variable pipe systems
Whether you are a plumber, sanitation technician, industrial engineer, or local authority, we have the right model, in the right size, with the right level of performance and safety.
Expert technical support
Fluotracking is more than an online store. Our strength lies in field experience, industry knowledge, and responsive technical guidance.
If you’re unsure which product to choose :
- Call us – we’ll ask three technical questions.
- Together, we identify the right product.
- You receive it within 24/48 hours, ready to deploy.
We speak your language. We understand that lost time or failed interventions can be costly.
Ordering your Fluotracking pipe stopper : simple, fast, professional
Whether you already know your needs or require expert advice, Fluotracking makes ordering straightforward:
- Reactive logistics designed for professionals
- Express delivery (24/48h) across the UK and Europe
- Secure packaging for all equipment
- Transparent pricing and quick quotations
Each order includes :
- Personalised advice
- Technical support if required after delivery
- Priority access to our specialists for emergency interventions
Fluotracking – Professional Inflatable Pipe Stopper Solutions for Leak Testing, Network Maintenance and Emergency Sealing.