OverviewEG41J-10/16 series manual flanged diaphragm valves are precision isolation control valves specially engineered for general corrosive media and industrial fluid pipeline systems. Featuring a broad nominal size range from DN20 to DN400 and standard flanged connections, this series integrates seamlessly into industrial pipelines across chemical processing, water treatment, environmental engineering, metallurgy, and pharmaceuticals. Utilizing a unique diaphragm sealing structure, the valve completely isolates the lower body cavity from the upper bonnet driving mechanism, achieving leak-free fluid shut-off and throttling within a nominal pressure range of 1.0 to 1.6 MPa. Constructed from premium grey cast iron or grey cast iron with rubber/fluorine lining, combined with a corrosion-resistant elastomeric diaphragm, the valve maintains exceptional sealing integrity and fatigue resistance at operating temperatures up to 85°C, making it an ideal core component for modern industrial corrosive fluid control.Product Image:EG41J-10/16 Rubber-Lined Diaphragm ValveFeatureBroad Size Range & Reliable Flanged Connection: Covering nominal diameters from DN20 to DN400, meeting diverse requirements from small-flow branch lines to large-diameter main distribution headers. Standard industrial flanges offer high structural strength, excellent resistance to piping tension and vibration, ensuring a secure, leak-tight installation. Complete Media Isolation & Zero External Leakage: A highly flexible diaphragm totally isolates the flowing fluid from the valve stem, bonnet, and actuator components. This eliminates traditional stuffing box packing leakage risks and protects driving mechanisms from chemical attack, ensuring zero fugitive emissions. Superior Corrosion Resistance & Optimal Hydraulics: Available with unlined grey cast iron or premium rubber/fluorine-lined body options, offering robust protection against general acids, alkalis, salt solutions, and abrasive slurries. The weir-type seat design yields smooth flow pathways, low fluid wash, and uniform sealing pressure distribution. Smooth Manual Operation & High Cost-Efficiency: Equipped with a precision handwheel transmission mechanism delivering moderate operating torque and intuitive control. The streamlined design eliminates sliding wearable parts inside the flow channel, drastically reducing lifecycle maintenance costs and delivering outstanding cost performance.

OverviewEG46J-10 series straight-through diaphragm valves are precision manual control valves customized for general corrosive media and industrial fluid piping systems. Featuring a nominal diameter range from DN20 to DN300 and standard flanged connections, this series integrates perfectly into industrial pipelines across chemical processing, environmental protection, water treatment, metallurgy, and pharmaceuticals. Utilizing a straight-through body design and a unique diaphragm sealing structure, the valve achieves leak-free fluid shut-off and regulation within a nominal pressure range of 1.0 MPa. Constructed from premium materials including cast iron, stainless steel, and rubber-lined cast iron, combined with a corrosion-resistant elastomeric diaphragm, the valve maintains exceptional sealing performance and fatigue life at temperatures up to 85°C, making it an ideal core component for modern industrial fluid control.Product Image: EG46J-10 Rubber-Lined Direct-Way Diaphragm ValveFeatureStraight-Through Design & Versatile Flange Connection: Tailored for DN20~DN300 piping systems, featuring a straight-through flow path with low flow resistance and high capacity. Standard industrial flanged connections ensure a seamless fit with domestic and international piping layouts. Media Isolation & Zero Leakage Guarantee: Equipped with a precision manual actuation mechanism and a highly flexible diaphragm, isolating the flowing media entirely from the stem, bonnet, and driving components. It executes smooth opening and closing from 0 bar with high accuracy and safety. Superior Corrosion Resistance: Specially engineered to handle medium temperatures up to 85°C, easily withstanding general acids, alkalis, salt solutions, and slurries containing suspended solids over long-term operation. Multiple Body Materials on Demand: Cast iron and stainless steel bodies deliver excellent mechanical properties and cost efficiency; the rubber-lined cast iron body is specifically built for aggressive chemical media, offering outstanding resistance to pitting and chemical attack.

OverviewThe G41F46-16C lined fluoroplastic weir-type diaphragm valve is a precision diaphragm-type shut-off control valve specifically engineered for highly corrosive fluid systems. This series covers nominal bore sizes from DN15 to DN250, with pressure ratings ranging from PN0.6 to PN1.6MPa, and features flanged end connections for standardized integration with corrosive media pipelines across chemical, petrochemical, metallurgical, pharmaceutical, and water treatment industries. The valve incorporates a weir-type flow path design, utilizing a flexible diaphragm that is pressed against the valve seat to achieve sealing. The diaphragm completely isolates the media from the bonnet, stem, and all moving parts, delivering true zero-leakage sealing performance. The valve can be actuated via handwheel, pneumatic actuator, or electric actuator, making it adaptable to a wide range of demanding corrosive shut-off applications. The valve body is manufactured from high-quality cast steel (WCB) substrate, lined with high-performance FEP (F46) or PTFE (F4) anti-corrosion layer. Combined with a specially engineered diaphragm sealing system, it maintains exceptional sealing integrity and fatigue resistance across a service temperature range of -20°C to 150°C, establishing itself as an ideal core component in modern anti-corrosion fluid control engineering for handling high-purity media, highly corrosive fluids, and media containing suspended particles.Product Image:G41F46-16C Lined Fluoroplastic Weir-type Diaphragm ValveFeatureWide Size Coverage and Diverse Actuation Options: Tailored for DN15 to DN250 pipelines, supporting pressure ratings from PN0.6 to PN1.6MPa, with three actuation options including manual, pneumatic, and electric, perfectly suited for diverse corrosive fluid control requirements both domestically and internationally.Zero-Leakage Diaphragm Sealing Design: Featuring an innovative weir-type diaphragm sealing configuration, the elastic diaphragm completely isolates corrosive media from the bonnet, stem, and all moving parts, fundamentally eliminating external leakage risks and achieving true zero-leakage sealing. This design is particularly well-suited for high-purity media, highly corrosive fluids, and demanding services involving suspended particles.Superior Corrosion Resistance: All internal wetted parts are fully lined with F46 (FEP) or F4 (PTFE), offering exceptional chemical inertness. The valve reliably withstands prolonged exposure to strong acids (sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, aqua regia), strong alkalis, organic acids, organic solvents, and various highly corrosive gases and liquids, without degradation even under extreme chemical conditions.Stable Performance Across a Wide Temperature Range: Through dedicated thermodynamic and sealing pair matching design, the valve operates reliably across a service temperature range of -20°C to 150°C, maintaining stable open/close performance and sealing integrity in complex environments involving alternating cryogenic and medium-temperature corrosive media.High-Strength Cast Steel Body: The valve body is manufactured from premium cast steel (WCB) material, offering high strength and excellent rigidity to withstand system stresses and thermal cycling shocks in medium-to-high pressure pipelines. This makes it particularly suitable for corrosive services involving steam tracing and significant pressure fluctuations.

OverviewThe LKV T(A/B) F46-10/16 series Teflon-lined pneumatic diaphragm weir-type control valve is a specialized process control terminal engineered for highly corrosive, high-viscosity, and particulate-bearing fluid services. Covering nominal diameters from DN15 to DN200 and pressure ratings from 0.6 to 2.5 MPa, this product line accommodates everything from fine chemical branch lines to large main pipelines. With flanged end connections, it ensures a robust and leak-tight interface with the piping system. Its core innovation lies in the packless weir-type diaphragm sealing structure, with all wetted internal surfaces fully lined with high-performance F46 (perfluoroethylene-propylene). Combined with a precision pneumatic diaphragm actuator, this design enables accurate linear flow regulation of strong acids, alkalis, organic solvents, and even slurry-type fluids across a wide temperature range of -20 °C to 180 °C, making it an ideal component for automatic control systems in the chemical, petrochemical, metallurgical, pharmaceutical, and environmental protection industries where corrosive and challenging media are present.Product Image: Teflon-Lined Pneumatic Diaphragm Weir-Type Control Valve LKV T(A/B) F46-10/16FeatureFull F46 Lining with Diaphragm-Type Corrosion Resistance: All surfaces of the body, bonnet, and diaphragm that contact the process fluid are fully encapsulated with a high-quality F46 lining, while the diaphragm provides complete isolation. Utilizing its outstanding chemical inertness, this structure completely isolates the metal substrate from aggressive media, withstanding prolonged exposure to virtually all strong acids, alkalis, and organic solvents. The diaphragm design also effectively prevents clogging of the stuffing-box area by high-viscosity media.Wide Size Range and Pressure Ratings: The series offers a full spectrum of diameters from DN15 to DN200 and pressure classes PN10/PN16 (0.6-2.5 MPa), providing flexible selection to match various pipe sizes and system pressure requirements. It is particularly effective in high-differential-pressure, high-flow, or fiber-laden corrosive applications.Precise Pneumatic Diaphragm Control: Equipped with a high-performance multi-spring pneumatic diaphragm actuator featuring high sensitivity, fast response, and stable output force. When paired with a smart positioner, it enables proportional control via standard 4-20 mA signals with excellent accuracy. The flow characteristic is approximately linear, precisely matching complex process control strategies.Stable Operation Across a Wide Temperature Range: Through the synergistic thermodynamic design of the F46 lining and reinforced diaphragm structure, the valve maintains dimensional stability and superior sealing performance at media temperatures ranging from -20 °C to 180 °C. The lining and diaphragm remain free from softening or cracking, ensuring reliable continuous regulation of hot corrosive fluids.Optional Body Materials for Versatility: Available in two base materials—cast steel and stainless steel. The cast steel body offers high strength and cost-effectiveness for standard corrosive services. The stainless steel body provides enhanced resistance to atmospheric and intergranular corrosion, specifically engineered for extreme environments such as marine climates or applications with high chloride concentrations.