Product Overview

The UPVC manual flange ball valve is a type of valve made mainly of unplasticized polyvinyl chloride (UPVC). It is installed through a flange connection method and is operated manually to control the on-off or flow regulation of the medium in the pipeline. Its core component is a rotating ball (usually operated at 90°), featuring a simple structure, good sealing performance, and strong corrosion resistance. It is widely used in corrosive medium transportation systems in industries such as chemical engineering, environmental protection, and water treatment.

Technical Specifications

Valve body material: UPVC 
Nominal diameter: DN15 to DN20 
Nominal pressure: PN6 to PN16 
Applicable temperature range: -10°C to +60°C 
Connection method: Flange connection 
Valve seat seal: UPVC + EPDM (terpolymer ethylene propylene diene monomer) or PTFE (polytetrafluoroethylene) 
Sphere material: UPVC (or nickel-plated UPVC, for enhanced wear resistance) 
Valve stem material: UPVC or stainless steel 
Operation method: Handle or worm gear drive 
Sealing grade: Zero leakage (in compliance with ISO 5208 or GB/T 13927 standards) 
Applicable media: Water, acids, bases, salt solutions and other corrosive liquids