PTFE Lined Valve Installation: Flange Alignment, Gaskets and Bolt Tightening
Quick Summary: Correct PTFE lined valve installation starts with undamaged lining, aligned mating flanges and an approved sealing arrangement. Some lined joints seal without an additional gasket; other interfaces require one. Bolt tightening must follow the supplied valve’s instructions for the actual flange, fasteners and lubrication condition. Do not use bolts to pull misaligned pipework […]
PTFE Lined Valves for Vacuum Service: Buyer Guide | Vcore
Quick Summary: PTFE lined valves for vacuum service must be selected by the complete valve design, minimum absolute pressure, temperature during vacuum exposure, chemical composition and operating cycle. Chemical resistance and a positive-pressure rating do not establish vacuum suitability. Before ordering, obtain model- and size-specific confirmation of lining support, sealing performance and the applicable vacuum–temperature […]
PTFE Lined Diaphragm Valve vs Plug Valve for Corrosive Chemical Service
Quick Summary: When comparing a PTFE lined diaphragm valve vs plug valve for corrosive chemical service, the main selection factors are stem isolation, internal flow resistance, lining integrity, sealing materials, operating frequency, temperature and maintenance requirements. A lined diaphragm valve separates the stem and operating mechanism from the process medium through a flexible diaphragm. A […]