Are you working with MS PTFE lined pipes? If so, you’ll know how quickly problems can arise if they aren’t managed correctly. Of course, understanding and avoiding the common pitfalls that come with using this type of material is essential for a successful project or installation. In this blog post, we’ll explore the most frequent issues associated with MS PTFE lined pipes and discuss how to effectively avoid them – so keep reading!
What is MS PTFE Lined Pipes?
MS PTFE Lined Pipes are pipes lined with polytetrafluoroethylene (PTFE), a synthetic fluoropolymer of tetrafluoroethylene known for its high resistance to chemicals and temperatures, low friction, and non-stick properties. It is frequently used in lining industrial pipe systems to reduce corrosion or erosion that causes leaks, as it provides an effective barrier that minimizes absorption of corrosive liquids while increasing their flow rate. Along with being chemical resistant, MS PTFE Lined Pipes have excellent mechanical strength; good electrical insulation properties; temperature stability; high heat resistance up to 250°C (482°F); improved flow characteristics due to the slippery nature of the material; and long service life due to its exceptional durability.
Ways to Avoid Common Problems with MS PTFE Lined Pipes
- Thermal Shock
Thermal shock, also known as thermal cycling, is a common problem in PTFE-lined pipes. It occurs due to the sudden temperature fluctuations in the process fluid, leading to the expansion and contraction of the steel pipe. This can cause the PTFE lining to crack or delaminate from the steel pipe, leading to leakages, and further damaging the industrial process. To prevent thermal shock, you need to ensure that the pipe is designed with expansion loops or flexible joints to absorb the thermal stress.
- Chemical Incompatibility
PTFE is resistant to most chemicals, but certain chemicals like molten alkalis, fluorine, and fluorine compounds may cause swelling or excessive softening of PTFE lining. Also, due to the porosity of PTFE lining, certain chemicals can penetrate through the lining and cause damage to the steel pipe. It is essential to ensure that PTFE is compatible with the process fluid before installing the lined pipe. A chemical compatibility chart should be consulted before choosing the material for the lining.
- Mechanical Damage
Mechanical damage to the PTFE lining can lead to leakage and further damage to the industrial process. Damage can occur during installation, handling, or operation of equipment. It is essential to avoid dragging the pipe on the ground or allowing sharp or pointed objects to come into contact with the lining. PTFE lined pipes should always be transported and handled carefully.
- Poor Quality Linings
Poor quality linings can lead to premature failure of the lined pipe and significant disruptions in industrial processes. The quality of the lining depends upon the quality of the PTFE resin, pigments, fillers, and other additives used. Ensure that the lining is from a reputable manufacturer, and the manufacturing process is reliable. The PTFE lining must be controlled and monitored during the manufacturing process to ensure consistent quality and performance.
- Improper Installation
Improper installation can result in the distortion of the lining and the steel pipe, leading to leakage and other problems. The lining should be installed using specialized tools and equipment to ensure proper adhesion of the PTFE to the steel pipe, avoiding air pockets, and achieving even thickness. Additionally, ensure that all gaskets, O-rings, and seals are installed correctly to prevent leaks.
Conclusion:
MS PTFE lined pipes are designed to meet chemical processing requirements and offer excellent resistance to corrosion and high temperature. However, to ensure that these lines pipes perform optimally, it is essential to prevent the common problems mentioned above. Proper design, careful handling, high-quality materials, impeccable installation, and regular maintenance are crucial to ensure the long-lasting performance of these critical pieces of equipment. By avoiding the common problems mentioned in this blog post, you can maintain smooth operations and minimize downtime, which ultimately leads to increased productivity and profitability.
