Identifying genuine products is crucial. It ensures system quality and safety. TIS PVC fittings have specific markings. These markings are standardized and clear. Learning to recognize them is a key skill.
Look for the TIS Mark
The most obvious sign is the TIS mark. It is often a logo on the fitting. It may include the letters “TIS”. This mark indicates compliance with the standard. It is usually embossed on the surface.
Check for Manufacturer Information
Reputable manufacturers imprint their name. They also include their brand or logo. This information is typically raised lettering. It shows the company stands behind its product. Anonymous fittings should be avoided.
Identify the Size and Dimension Markings
The nominal size is clearly marked. For example, “1/2″ ” or “DN15”. This refers to the internal diameter. The outer diameter may also be shown. These markings ensure proper pipe matching.
Look for Pressure Rating Stamps
Pressure rating is critical for safety. Look for “PN” followed by a number. PN10, PN16 are common ratings. This indicates the maximum working pressure. The rating is in bars.
Find the Material Designation
The material type is always identified. Look for “PVC” or “PVC-U”. “U” stands for unplasticized. This confirms the base material. Some may also include the standard number.
Check for Production Codes
Most fittings have a production code. This includes date and batch information. It is essential for traceability. This is a sign of a quality-controlled product. It allows tracking in case of issues.
Examine the Quality of Workmanship
Genuine TIS PVC fittings have good finish. They are free from burrs and sharp edges. The surface should be smooth. The color is consistent throughout. There should be no visible voids or bubbles.
Verify with Documentation
Always ask for a material certificate. Reputable suppliers can provide this. It confirms the product’s compliance. It is your best proof of authenticity. Keep this document for your records.
Purchase from Authorized Distributors
Buy only from trusted sources. Authorized distributors sell genuine products. They have direct relationships with manufacturers. Avoid unknown online marketplaces. This reduces the risk of counterfeits.
Compare with Known Genuine Samples
If possible, compare with a known good fitting. Check the weight, color, and feel. Counterfeits are often lighter. Their plastic may feel different. The markings might be less sharp.
Understand the Relevant TIS Standard Number
Know the specific standard for your fitting. For pressure pipes, it might be TIS 17-2531. For fittings, it could be TIS 78-2531. The number may be marked on the product. This confirms the exact standard met.
Conclusion: A Multi-Step Verification Process
Identifying TIS PVC fittings requires attention. Look for the official TIS mark. Check all size and pressure ratings. Examine the physical quality. Always request supporting documentation. Buying from authorized sellers is the safest step. This process ensures you get reliable, certified products for your project.
