PP Collar Flange Plain & Threaded

Key Features and Specifications

Material: It is primarily manufactured from PVC (Polyvinyl Chloride) or uPVC (unplasticized Polyvinyl Chloride) material, known for its high strength, lightweight nature, and resistance to rust, corrosion, and various chemicals.
Design: The "collar" aspect often refers to a longer hub or tailpiece that is solvent-welded or threaded onto the pipe end, while a separate backing ring (flange) is often free to rotate, which simplifies bolt alignment during installation (a design often called a "Van Stone" style flange).
Connection: Flanges are joined using bolts and nuts, often with a gasket inserted between the two mating faces to ensure a tight, leak-proof seal.
Installation: They allow for easy assembly and disassembly for maintenance, repairs, or replacement of parts, which is a key advantage over permanent joining methods like solvent welding an entire system.
Pressure and Temperature: Specific pressure ratings (e.g., PN10, PN16, Class 150) and maximum working temperatures (typically around 140°F or 60°C) vary by product and schedule (e.g., Schedule 80), but they are designed to handle pressurized environments.