Pneumatic fluorine lined diaphragm valve


Product model: G41F46

Nominal diameter: DN15-DN125

Nominal pressure: PN0.6-1.6Mpa

Air driven: compressed air 4-6bar

Applicable media: strong acid, strong alkali, strong corrosion and other media

Operating temperature: - 50 ℃ ~ 150 ℃

Diaphragm material: PTFE + EPDM

Valve body material: cast iron rubber lining, carbon steel fluorine lining

Optional accessories: limit switch, positioner, solenoid valve and pressure reducing valve


PRODUCT OVERVIEW

Pneumatic fluorine lined diaphragm valve is composed of diaphragm valve and pneumatic actuator. It takes compressed air as power to regulate the flow of fluid medium in process pipeline. Because the valve body with corrosion-resistant lining and corrosion-resistant diaphragm are adopted in the structure, there is no stuffing box structure, the throttling element is elastic diaphragm, and the flow channel of the valve body is smooth, the valve has the advantages of small resistance, large flow, no external leakage, convenience, reliability, fire and explosion prevention. It is widely applicable to the flow regulation of strong acid, strong alkali, strong corrosion, high viscosity, granular, fibrous and toxic and non polluting media in industrial automation system.


PRODUCT FEATURES

1. The composite diaphragm separates the inner cavity at the lower part of the valve body from the inner cavity of the valve cover and forms a DC channel with it, so that the valve stem, valve disc and other internals at the upper part of the diaphragm are completely isolated from the medium, the packing sealing structure is omitted, and the internal leakage of the medium can be avoided at the same time;

2. The diaphragm made of FEP fluoroplastic and synthetic rubber and the valve with Teflon fluoroplastic lining layer can be applied to various highly corrosive media except "molten alkali metal and elemental fluorine".

3. As an actuator, the diaphragm is prone to fatigue fracture due to frequent opening and closing. It should be replaced regularly according to the working conditions, media and characteristics.


MAIN TECHNICAL PARAMETERS

Main technical parametersStructure lengthFlange sizestructural styleDriving modeNominal pressurePressure test
GB/T12235GB/T1221、HG/T3704、ASME B16.10HG20592、ANSI B16.5aWeir type, DC typePneumatic0.6~1.6MPaGB/T13927、API598


MATERIAL OF MAIN PARTS

Part namecarbon steelstainless steel
CPRPLRL
Body, bonnet and discWCBCF8CF8MCF3CF3M
Stem2Cr13CF8CF8MCF3CF3M
Lining layerPTFE(F4)、FEP(F46)、PFA(soluble polytetrafluoroethylene), PE (ultra high molecular weight polyethylene), Po (polyolefin)
the diaphragmFEP(F46)、CR(neoprene), PFA (soluble polytetrafluoroethylene), FPDM (ethylene propylene rubber)
Stem nutZCuAI10Fe3
Bolt351Cr17Ni21Cr17Ni21Cr18Ni91Cr18Ni9Ti
Nut450Cr18Ni90Cr18Ni90Cr18Ni90Cr18Ni9


气动衬氟隔膜阀(图1)


MAIN OVERALL CONNECTION DIMENSIONS

DNLDD1n-фdfHфA
1512595654-142215110
20139105754-142220110
25145115854-142225110
321601401004-182240140
401801501104-183285170
502101651254-183307170
652501851454-183327200
803002001608-183390230
1003502201808-183470260
1254002502108-183637310

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