The defining feature of this tee is its reduced outlet port, where one branch has a smaller diameter than the other two standard-sized ports, creating a configuration that allows smooth transition between pipes of different sizes. This design enables seamless integration of varying pipe diameters, minimizing turbulence and pressure drop that can occur with abrupt changes in cross-section. For instance, in drainage applications, when a main pipe needs to connect to a smaller branch line, this fitting ensures efficient flow distribution without compromising system performance. The smooth internal surface, free of burrs or irregularities, reduces frictional resistance, prevents sediment buildup, and lowers the risk of clogging, ensuring consistent hydraulic efficiency.
Available in standard dimensions including D50, D75, D110, and D160, each size is produced according to international dimensional tolerances, ensuring compatibility with commonly used PVC pipes and fittings. Prior to shipment, every tee undergoes rigorous pressure testing and dimensional inspection to verify its ability to withstand operational pressures and maintain precise alignment. The high concentricity of the sockets allows for quick and easy socket-type assembly without the need for on-site modifications, and a secure, leak-proof joint can be achieved using standard PVC solvent cement. Packaging is optimized for logistics and site handling: 378 pieces per box for D50, 140 for D75, 120 for D110, and 36 for D160, facilitating efficient storage and deployment.
This fitting is particularly advantageous in applications requiring space-saving layouts and streamlined piping networks, such as vertical stack take-offs in high-rise buildings, junction points in underground sewer systems, or complex industrial piping connections. The reduced end directly accommodates smaller diameter pipes, eliminating the need for additional reducer fittings, thereby reducing material costs and installation complexity.

Shanghai Pirsa Pipe Industry Co., Ltd. was established in 2003. We have two production bases located in Shanghai, China and Zhoukou, Henan Province, with cooperative bases covering Fujian, Anhui, Yunnan, Chongqing, and Shenyang in China. The factory covers an area of 100000 square meters; Over 100 production lines with an annual production capacity of 100000 tons and an annual sales revenue of 600 million RMB.
The products include PP-R, PE-RT, PE water supply pipes PB、 Nearly a hundred series of products including stainless steel drinking water pipes, HDPE drainage pipes and double wall corrugated pipes, PVC-U drainage pipes and electrical conduit, PVC-C high and low voltage power pipes, switch sockets, bathroom plumbing, and pre purified water.
The company was established in 2003
Factory area of 100000 square meters
Over 100 production lines