Low Pressure Inflatable Rubber Pipe Plug – 0.01-0.04 MPa for Sewer Testing & Pipe Sealing (100-3400mm Diameter)

Our low pressure inflatable rubber pipe plug (also known as an inflatable pipe plug, pipe stopper, or pipeline plugging balloon) is designed specifically for applications requiring gentle, reliable sealing at working pressures of 0.01 – 0.04 MPa (1.5 – 5.8 psi). Ideal for gravity flow sewer lines, leak testing, temporary blocking, and pipe maintenance. Made from high-quality reinforced EPDM or NBR rubber, it expands upon inflation to create a watertight seal without risking pipe damage. Available for pipe diameters from 100mm (approx. 4 inches) up to 3400mm (approx. 134 inches).

What is a Low Pressure Inflatable Rubber Pipe Plug?

An inflatable rubber pipe plug is a flexible bladder inserted into a pipe and inflated to block fluid or gas flow. Our low pressure series is engineered for applications where high pressure is not required – such as sewer testing, flow control, and construction site sealing. The low inflation pressure (0.01-0.04 MPa) ensures safe operation in plastic pipes, PVC, clay, and aging concrete lines across a wide diameter range from 100mm to 3400mm.

Key Features

• Low pressure operation – Designed for working pressure range 0.01 – 0.04 MPa (1.5 – 5.8 psi).
• Safe & reliable – Low pressure design reduces risk of over-expansion and pipe damage.
• Temporary & reusable – Designed for repeated use, providing a cost-effective sealing solution.
• Easy to install & remove – Quick to insert, inflate, deflate, and retrieve.
• High durability – Made from reinforced EPDM or NBR rubber with excellent elasticity.
• Wide size range – Available for pipes from 100mm (4″) up to 3400mm (134″) internal diameter.
• Secure seal – Creates a tight seal for back pressure up to 0.02 MPa (3 psi).

Types of Low Pressure Pipe Plugs We Supply

• Standard Low Pressure Plug – General-purpose plug for sewer and drainage testing.
• Mini Sewer Pipe Plug – Short-length plug ideal for house connections and tight spaces (available for smaller diameters).
• Bypass Pipe Plug – Features an internal bypass hose to allow flow through the plug during sealing.
• Multi-Size Inflatable Plug – A single plug covers a wide range of pipe diameters.

Technical Specifications

Applications

Our low pressure inflatable pipe plugs are widely used in:

• Sewer & drainage systems – Sealing pipes for cleaning, inspection, and repair.
• Leak testing – Isolating pipe sections for hydrostatic or air pressure tests at low pressure.
• Pipeline maintenance – Blocking flow during valve replacement or joint repair.
• Construction sites – Temporarily sealing pipes to prevent debris ingress.
• Gravity flow lines – Blocking flow in non-pressurized systems.
• Large diameter pipes – Suitable for storm drains, culverts, and concrete pipes up to 3400mm.

Installation Guide

1. Inspect the pipe – Clean the pipe interior, removing any sharp objects that could puncture the plug.
2. Choose the right plug size – Ensure the plug’s diameter range matches your pipe’s internal diameter (100-3400mm).
3. Insert the deflated plug – Gently feed the plug into the pipe to the desired position.
4. Connect inflation source – Attach a hand pump or low pressure compressor to the plug’s inflation valve.
5. Inflate slowly – Gradually inflate to achieve a snug seal. Do not exceed 0.04 MPa.
6. Monitor the seal – Once inflated, check that the plug is securely seated and no leakage occurs.
7. Deflate and remove – After work is complete, slowly release the air and carefully pull the plug out.
8. Clean and store – Clean the plug and store it in a cool, dry place away from direct sunlight.

Frequently Asked Questions (FAQ)

Q: How many times can a low pressure pipe plug be reused?

A: With proper care and storage, our low pressure inflatable pipe plugs can be reused many times. Always inspect for cuts or abrasion before each use.

Q: Can the plug be used in pipes with flowing water?

A: Yes, but for live lines with continuous flow, we recommend using a bypass pipe plug that allows water to pass through an internal hose during sealing.

Q: What is the maximum back pressure these plugs can hold?

A: For our low pressure series, the maximum back pressure is ≤ 0.02 MPa (3 psi). These plugs are designed for gravity flow sewer lines, leak testing, and temporary blocking where high pressure is not required.

Q: Are these plugs safe for PVC or plastic pipes?

A: Yes. The low inflation pressure (0.01-0.04 MPa) minimizes the risk of pipe deformation or damage, making them safe for PVC, ABS, clay, and concrete pipes.

Q: Do you offer custom sizes within the 100-3400mm range?

A: Yes, we manufacture custom-sized inflatable pipe plugs for specific diameters and special applications. Please provide your exact pipe internal diameter and length requirements.

Why Choose Guchen Low Pressure Inflatable Pipe Plugs?

As a professional inflatable pipe plug manufacturer and supplier with over 15 years of experience, we offer:

• Low pressure design (0.01-0.04 MPa) – safe for plastic pipes, PVC, and aging concrete lines.
• Premium reinforced rubber construction – excellent burst strength and flexibility.
• Wide diameter coverage from 100mm to 3400mm – one-stop solution for various pipe sizes.
• Strict quality control – each plug tested before shipment.
• Custom sizes, materials, and bypass options available.
• Factory direct prices with fast worldwide shipping.
• Technical support and installation guidance.

📞 Get a quote for low pressure inflatable rubber pipe plugs – Send your pipe diameter (100-3400mm), application, and any special requirements. We will reply within 24 hours.