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There are several certifications available for polymer fittings, depending on the specific type of fitting and its intended use. Here are some examples:

1. NSF/ANSI 61: This certification verifies that the polymer fittings comply with the health and safety requirements for drinking water systems.

2. ASTM D2513: This certification is specific to polyethylene (PE) gas pipe fittings and verifies their compliance with certain standards and requirements for gas distribution systems.

3. ASTM F1970: This certification is for high density polyethylene (HDPE) fittings used in water service lines, and it verifies their compliance with certain standards and requirements for municipal water systems.

4. AWWA C906: This certification is for PE pressure pipe and fittings used in water supply service, and it verifies their compliance with certain standards and requirements for municipal water systems.

5. UL Listed: This certification verifies that the polymer fittings have been tested and meet certain safety standards for use in electrical applications.

It is important to note that the specific certifications required for polymer fittings will vary depending on the country, industry, and application. It is best to consult with a qualified engineer or regulatory body to determine the appropriate certifications for your specific needs.

1. CSA B137.1: This certification is specific to polyethylene (PE) pipes, tubing, and fittings used in plumbing and heating systems. It verifies their compliance with certain standards and requirements for these systems.

2. FM Global: This certification is for high density polyethylene (HDPE) fittings used in fire protection systems. It verifies their compliance with certain safety standards and requirements for these systems.

3. ISO 9001: This certification is a general quality management certification that verifies that the manufacturer of the polymer fittings has a quality management system in place to ensure consistent quality of their products.

4. ASME B16.9: This certification is for polymer fittings used in industrial piping systems. It verifies their compliance with certain standards and requirements for these systems.

Again, the specific certifications required for polymer fittings will vary depending on the industry, application, and country. It is important to consult with the appropriate regulatory bodies or standards organizations to determine the necessary certifications for your specific needs.

1. API 15LE: This certification is specific to polyethylene (PE) pipe and fittings used in the oil and gas industry. It verifies their compliance with certain standards and requirements for offshore and onshore pipelines and gathering systems.

2. EN 1555 and EN 12201: These certifications are specific to polyethylene (PE) pipes and fittings used in gas and water supply systems. They verify compliance with certain European standards for these applications.

3. DIN 8074 and DIN 8075: These certifications are specific to polyethylene (PE) pipes and fittings used in water supply systems. They verify compliance with certain German standards for these applications.

4. WRAS: This certification is specific to polymer fittings used in UK public water supply systems. It verifies their compliance with the Water Supply (Water Fittings) Regulations and Scottish Water Byelaws.

As always, it's important to consult with the appropriate regulatory bodies or standards organizations to determine the necessary certifications for your specific application and location.

1. ABS: This certification is specific to polymer fittings used in marine applications. It verifies their compliance with the American Bureau of Shipping standards for materials and construction of marine equipment.

2. ASSE 1061: This certification is for polymer fittings used in potable water systems. It verifies their compliance with certain performance and material requirements.

3. NSF/ANSI 14: This certification is for plastic piping components used in plumbing systems. It verifies their compliance with certain standards for mechanical strength, durability, and safety.

4. UL 1821: This certification is specific to polymer fittings used in plenum spaces (e.g., air handling ducts). It verifies their compliance with certain safety standards for use in these spaces.

5. AS/NZS 4130: This certification is specific to polyethylene (PE) pipe and fittings used in Australia and New Zealand. It verifies their compliance with certain standards for these applications.

6. CSA B137.4: This certification is specific to cross linked polyethylene (PEX) pipe and fittings used in plumbing and heating systems. It verifies their compliance with certain standards and requirements for these systems.

7. NSF/ANSI 358: This certification is for fittings used in geothermal systems. It verifies their compliance with certain standards and requirements for these systems.

8. SDR: SDR stands for Standard Dimension Ratio and is a specification for polymer fittings used in pressure piping applications. It specifies the ratio of the pipe's outside diameter to its wall thickness and is used to ensure compatibility between pipes and fittings.

Again, it's important to consult with the appropriate regulatory bodies or standards organizations to determine the necessary certifications for your specific application and location.