Check the listing for details. 4Pcs 1" UPVC Union Coupling Pipe Fitting, UPVC Union Coupling Adapter, White. Condition: New. Listed at 24.11 USD. Description:Durable Material: The coupling adapter is made of UPVC material, which is durable and corrosion-resistant. Compared with metal, UPVC will not rust and is suitable for long-term use.Anti-leakage: The overall design of the pipe wall is thickened, which is more resistant to cracking and compression, and has a longer service life. The built-in EPDM O-ring has high elasticity and wear resistance, is resistant to water and steam, and has good sealing. UPVC Union Fittings: Smooth internal design provides reliable and leak-proof connection. Union fittings can be easily disassembled without destroying the pipe connection, facilitating future pipe cleaning and maintenance. Its various sizes can meet your different life needs.