Introduction to Leak Tightness Tester Under Bending and Pressure (ISO 3503)
In water and sewage distribution networks, pipes and fittings are rarely installed in a perfectly straight line. Ground settling or environmental pressures cause bending at the connection points (Joints). The Leak Tightness Tester under Bending manufactured by Polymer Test simulates precisely these rigorous conditions to ensure that O-rings and mechanical joints maintain their seal even when curved/bent.
Operating Mechanism: Combined Stress Simulation
This test is one of the most challenging evaluations for fittings as it applies two forces simultaneously:
- Internal Pressure: Water is pumped into the pipe at a specific pressure (typically by connecting to our Hydrostatic Pressure Tester).
- Bending Force: Simultaneously, the machine’s powerful motor and gearbox system bend the pipe to a specified radius. If a single drop of water escapes from the joint in this state, the sample fails.
Engineering Features
- Motorized Bending System: Utilizes an electric motor and precision gearbox instead of manual jacks, allowing for the application of uniform and controlled force.
- Adjustable Fixtures: Features movable supports that enable testing of a wide range of pipes with different diameters and lengths without the need to change main components.
- Versatility: Suitable for testing Polyethylene (PE) pipes, PVC-U pipes, and mechanical compression fittings.
International Standards
This equipment is designed exactly based on the dimensional and force requirements of the following standards:
- International Standard ISO 3503 (Plastics piping systems — Mechanical joints between fittings and pressure pipes — Test method for leaktightness under internal pressure of assemblies subjected to bending).
- National Standard INSO 13502.
For price inquiries and technical consultation regarding the machine’s capacity, please click the contact for purchase button or visit our contact us page.
