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China, Chinese Flanged Pneumatic Diaphragm Normally Opened Fluorine Rubber/PTFE/PFA Lined Weir Type Diaphragm Valve1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
ValveDiaphragm ValveFluorine Lined Diaphragm ValveFlanged Diaphragm Valve
ZHENGZHOU FREE FLUID CONTROL TECHNOLOGY CO., LTD
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Product Description GeneralFREE-VALVE Flanged Pneumatic Diaphragm Normally Opened Fluorine Rubber/PTFE/PFA lined Weir Type Diaphragm Valve is composed of single-acting pneumatic actuator and diaphragm valve, which uses pneumatic actuator to drive the opening and closing of the diaphragm valve, and the valve is kept in normally open state in the case of no air source or no signal, and the valve is in a closed state after the cylinder is ventilated, so as to act as an opening and closing mechanism to control the flow of medium. The valve body cavity can be selected according to the working conditions of different lining materials, so the valve is suitable for high viscous fluid, suspended particles, toxic media and corrosive media working conditions. Features The diaphragm of using FEP/FPA/PTFE and rubber composite, suitable for variety of corrosive media.Diaphragm replaceable, low maintenance costs.No stuffing box on valve bonnet,No direct contact between metal parts and medium slurry.Smooth flow channel and small flow resistance, larger flow rate can be obtained and the pressure drop is small,weaken abrasion and prolong the service working life.The valve is closed when the air source is connected, and the valve is opened when the air source is disconnected.The actuator can be equipped with a handwheel, and when the air source fails, the handwheel can be operated to open or close the valve.The sealing parts are elastic rubber diaphragms. It has better sealing and minimum closing force.The lining material is optional, which can be applied to a variety of media ,the valve has good corrosion resistance.Technical Specification 1Size RangeNPS1~NPS8,DN25~DN2002Nominal pressureClass 150 /PN10/PN163Applicable Temperature0~200oC4Connection TypeFlange 5Lining MaterialPTFE , PFA , FEP6DiaphragmEPDM+PFA /FEP7Pressure testGB/T13927, API5988Face to FaceGB/T12221, ASME B16.109Operating TypePneumatic single acting Temperature Range Lining materialService temperature,°CApplication mediumNR-10°C~+85°Cexclusive of strong oxidants:hydrochloric acid, fluorosilicic acid, phenolic acid, 30 percent sulfuric acid, 80 percent phosphoric acid, alkali, salt, gold plating solution, sodium hydroxide, potassium hydroxide, neutral salt aqueous solution, 10 percent sodium hypochlorite, ammonia, most alcohols, organic acids and aldehydes,ectEPDM≤120°CIt has the similar acid and alkaline properties of natural glue, and it is very good for low pressure steam, hot water and cold water.PTFE(F4)≤180°CStrong acid, strong base, strong oxidant, organic solvent, etcFEP(F46)≤120°CAny organic solvents or reagents, xi or concentrated inorganic acids, bases, ketones, aromatics, chlorinated hydrocarbons, etcPFA≤180°CStrong acid,strong alkali,Strong oxidant, organic solvent, etc Main dimensions DNDNPNLDD1n-?dEG6K41W/J/F46DN20PN10121105754-?14DN25131115854-?14DN321501401004-?18DN401631501104-?18DN501941651254-?18DN652201851454-?18DN802582001608-?18DN1003092201808-?18DN1253622502108-?18DN1504122852408-?22DN2005293402958-?22Note:in the suitable media column, "W" means the body without lined,"J" means the body lined hard rubber,"F46" means the body lined fluorine plastic.ApplicationFREE-VALVE Flanged Pneumatic Diaphragm Normally Opened Fluorine Rubber/PTFE/PFA lined Weir Type Diaphragm Valve is used to control non-corrosive or general corrosive media, the surface of the valve body cavity is not lined or covered with a variety of rubber to choose from, suitable for different working temperature and fluid pipeline, the valve is widely used in chemical, acid, alkali, smelting, rare earth, pesticides and other industries production system.
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