High Pressure Inflatable Pipe Plug
High pressure inflatable pipe plug – 0.1-0.2 MPa, DN300-DN3000. Reinforced rubber, reusable. For pipeline testing, sealing, and maintenance. Factory direct.
High Pressure Inflatable Pipe Plug – 0.1-0.2 MPa for Pipeline Testing & Sealing (DN300-DN3000)
Our high pressure inflatable pipe plug (also known as high pressure pipe plug, inflatable pipe stopper, or pipe sealing balloon) is a heavy-duty, reusable sealing device designed for temporary blocking and pressure testing of pipelines. Operating at a working pressure of 0.1–0.2 MPa (14.5–29 PSI) and covering pipe diameters from DN300 to DN3000 (300mm – 3000mm), it is ideal for water mains, gas pipelines, sewer systems, and industrial applications that require a reliable, high-strength seal. Made from reinforced rubber with multiple fabric layers, it withstands significant back pressure while remaining flexible and easy to install.
What is a High Pressure Inflatable Pipe Plug?
A high pressure inflatable pipe plug is a cylindrical rubber bladder that is inserted into a pipe and inflated to create a tight seal against the pipe wall. It is used to block flow, isolate pipe sections for repair, or conduct hydrostatic and pneumatic pressure tests. Unlike low-pressure plugs (typically 0.01-0.04 MPa), our high pressure series is engineered with thicker rubber and stronger reinforcement to handle higher inflation pressures and greater back pressure—making it suitable for pressurized pipelines.
Key Features
- High working pressure – 0.1–0.2 MPa (14.5–29 PSI) – suitable for pressurized lines and testing.
- Wide diameter range – Available from DN300 (300mm) up to DN3000 (3000mm).
- Reusable – Designed for hundreds of inflation/deflation cycles with proper care.
- Heavy-duty construction – Reinforced natural rubber with multiple layers of polyester or nylon fabric.
- Water depth rating – Withstands up to 7 meters of water head (DN300-DN800) or 5 meters (DN1000-DN3000).
- Easy to install – Insert deflated, inflate with a compressor, deflate and remove.
- Corrosion resistant – Rubber material resists water, sewage, and mild chemicals.
- Multiple valve options – Standard Schrader / 1/4″ BSP / truck valve available.
Technical Specifications
All models operate at 0.1–0.2 MPa. The table below shows the complete size range.
| Specification (Model) | Applicable Pipe Diameter (mm) | Inflation Pressure (MPa) | Max Water Depth (m) | Initial Diameter (mm) | Length (m) |
|---|---|---|---|---|---|
| DN300 | 300 | 0.1-0.2 | 7 | 300 | 0.8 |
| DN400 | 400 | 0.1-0.2 | 7 | 400 | 1.0 |
| DN500 | 500 | 0.1-0.2 | 7 | 500 | 1.1 |
| DN600 | 600 | 0.1-0.2 | 7 | 600 | 1.4 |
| DN800 | 800 | 0.1-0.2 | 7 | 800 | 1.6 |
| DN1000 | 1000 | 0.1-0.2 | 5 | 1000 | 1.9 |
| DN1200 | 1200 | 0.1-0.2 | 5 | 1200 | 2.4 |
| DN1350 | 1350 | 0.1-0.2 | 5 | 1350 | 2.4 |
| DN1400 | 1400 | 0.1-0.2 | 5 | 1400 | 2.5 |
| DN1500 | 1500 | 0.1-0.2 | 5 | 1500 | 2.8 |
| DN1600 | 1600 | 0.1-0.2 | 5 | 1600 | 3.0 |
| DN1800 | 1800 | 0.1-0.2 | 5 | 1800 | 3.0 |
| DN2000 | 2000 | 0.1-0.2 | 5 | 2000 | 3.2 |
| DN2200 | 2200 | 0.1-0.2 | 5 | 2200 | 3.6 |
| DN2400 | 2400 | 0.1-0.2 | 5 | 2400 | 3.7 |
| DN2500 | 2500 | 0.1-0.2 | 5 | 2500 | 4.0 |
| DN2600 | 2600 | 0.1-0.2 | 5 | 2600 | 4.8 |
| DN2800 | 2800 | 0.1-0.2 | 5 | 2800 | 5.0 |
| DN3000 | 3000 | 0.1-0.2 | 5 | 3000 | 5.2 |
Applications
Our high pressure inflatable pipe plugs are widely used for:
- Hydrostatic pressure testing – Isolating pipe sections for water pressure tests (e.g., 0.1-0.2 MPa).
- Pipeline maintenance & repair – Temporary blocking of gas, water, or sewer lines.
- Emergency leak sealing – Quick deployment to stop flow in damaged pipes.
- Pipe bypass operations – Used with bypass pumps to redirect flow.
- Industrial pipelines – Sealing chemical, oil, or cooling lines.
- Municipal water & wastewater – Isolating sections for valve replacement or joint repair.
Installation Guide
- Inspect the pipe – Remove sharp objects, debris, or protruding edges.
- Select the correct size – Match the plug to your pipe’s internal diameter (refer to table).
- Insert deflated plug – Push the plug into the pipe to the desired sealing position.
- Connect inflation source – Use a compressor with a pressure regulator. Attach to the valve.
- Inflate slowly – Inflate to the recommended pressure (0.1–0.2 MPa). Do not exceed 0.2 MPa.
- Check for seal – Verify no air or water leaks past the plug.
- After work, deflate and remove – Release pressure slowly, then pull the plug out.
- Clean and store – Rinse with water, dry, and store away from sunlight and sharp objects.
Figure: High pressure inflatable pipe plug inflated to seal a large diameter pipeline during construction
Frequently Asked Questions (FAQ)
Q: What is the maximum back pressure this plug can hold?
A: The maximum back pressure is equal to the water depth rating – approximately 0.07 MPa (7 meters) for DN300-DN800 and 0.05 MPa (5 meters) for DN1000-DN3000. For higher back pressure requirements, please contact us for custom designs.
Q: Can this plug be used for gas pipelines?
A: Yes, but we recommend using a plug with a conductive or anti-static rubber compound for gas applications. Please specify your requirement when ordering.
Q: How many times can it be reused?
A: With proper handling and storage, our high pressure plugs can be reused 100+ times. Inspect for cuts or abrasion before each use.
Q: What material is used?
A: Standard material is natural rubber with multiple layers of nylon/polyester fabric reinforcement. EPDM (for hot water/chemicals) or NBR (for oil resistance) is available on request.
Q: Do you offer plugs with bypass hose?
A: Yes, a bypass version is available for DN300-DN1200 to allow flow through the plug during sealing. Please inquire.
Q: Can I get a custom size not listed?
A: Yes, we manufacture custom diameters and lengths. Provide your pipe internal diameter and length requirements, and we will quote accordingly.
Why Choose Guchen High Pressure Inflatable Pipe Plugs?
As a professional inflatable pipe plug manufacturer with over 15 years of experience, we offer:
- High pressure rating (0.1-0.2 MPa) – suitable for pressurized pipelines and testing.
- Wide diameter coverage DN300 to DN3000 – one-stop solution.
- Premium reinforced rubber – excellent burst strength and durability.
- Strict quality control – each plug pressure-tested before shipping.
- Custom sizes, bypass options, and special materials available.
- Factory direct prices with fast worldwide shipping.
- Technical support and installation manuals.
📞 Get a quote for high pressure inflatable pipe plugs – Send your pipe diameter, working pressure, and application. We will reply within 24 hours.