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Durable Rubber Flap Check Valve for Efficient Flow Control1
Valve, Rubber Flap Check Valve, Durable Valve
Tianjin Jintong Valve Manufacturing Co., Ltd.
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Product Description Product DescriptionThe company's production of A-type, LT-type butterfly valve is the introduction of advanced technology in the United States, the first domestic production has thirty years of production history of the product. He has won several national high-quality awards. The transmission mode is: hand-handled snail rod transmission, pneumatic, electric, and so on. The size range is DN25 to DNI200.The company's butterfly valves can be used on the pipeways of petroleum, chemical, food, pharmaceutical, paper, hydropower, marine, drainage, metallurgy, energy and other systems, and are suitable for a variety of corrosive gases, liquids, semi-liquids and solid powder media.Detailed Photos Product Parameters I. Model AnalysisCode PartMeaningSpecific DescriptionHValve TypeCheck Valve (prevents medium backflow)4Connection TypeFlange Connection (GB/T 9113 standard)4Structure TypeSwing Type (disc rotates around a shaft)XSealing Surface MaterialRubber Plate (NBR/EPDM)16Nominal PressurePN1.6 MPa (16 kgf/cm2)QBody MaterialDuctile Iron (QT450-10)II. Core Technical Parameters1. Dimensions & PressureNominal Diameter (DN): DN50-DN300 (common sizes: DN50, DN80, DN100, DN150, DN200, etc.)Nominal Pressure (PN): 1.6 MPa (shell test pressure: 2.4 MPa; sealing test pressure: 1.76 MPa)Flange Standard: GB/T 9113 (RF face), customizable for other standards2. Material CompositionComponentMaterialPerformance CharacteristicsValve BodyDuctile Iron (QT450-10)Tensile strength ≥450MPa, high impact resistance; suitable for non-corrosive media like water, steam, and oil.Sealing FaceNBR/EPDM RubberNBR: Oil-resistant (suitable for hydraulic oil); EPDM: Water/steam-resistant (suitable for water supply/drainage and HVAC systems).DiscDuctile Iron/Carbon SteelSurface anti-corrosion treatment to enhance wear resistance.Valve ShaftCarbon Steel (Q235B)Heat-treated for strengthened anti-deformation during opening/closing.3. Working ParametersApplicable Media:Water (cold/hot/circulating), saturated steam (≤1.6 MPa), lubricating oil, diesel, and other non-strongly corrosive liquids.Not suitable for strong acids, alkalis, or organic solvents (e.g., sulfuric acid, hydrochloric acid).Working Temperature:NBR seal: -20°C-120°C; EPDM seal: -50°C-150°C (rubber aging occurs beyond temperature range).Flow Direction: Unidirectional. The valve body is marked with a flow arrow, which must align with the pipeline flow direction.4. Performance IndicatorsLeakage: Complies with GB/T 13927 Class VI (bubble-tight); rubber sealing surface achieves zero leakage.Pressure Loss: Swing structure offers low resistance. For DN100, pressure loss is approximately 0.02-0.05 MPa.Opening/Closing Response: Opens at forward flow velocity ≥0.5 m/s, closes at reverse flow velocity ≤0.1 m/s, with response time ≤0.5 s.III. Installation & StandardsInstallation Method:Horizontal installation: Keep the valve shaft horizontal;Vertical installation: Medium must flow from bottom to top (avoids disc malfunction due to gravity).Execution Standards:Manufacturing: GB/T 12227 (ductile iron valves), GB/T 12236 (swing check valves);Testing: Shell pressure 2.4 MPa (hold for 15 min), sealing pressure 1.76 MPa (hold for 10 min).Application Scenarios:Water supply/drainage systems (prevent backflow at pump outlets), HVAC circulating water, steam heating, and industrial oil pipelines. Certifications Company ProfileJintong continuously strengthens core technologies and innovation, continuously pursues excellence and excellence, and ensures the excellent performance of each product with advanced production equipment, strict quality management, and precision production and testing processes.Serve sincerely, win trust, be based on the market and serve the market. The mature process, rigorous style and perfect quality system comprehensively guarantee the efficient and standardized operation of all aspects, from raw material procurement, product manufacturing to sales and shipping, and the quality compared with similar products at home and abroad can meet the needs of different customers. Excellent product quality, warm and attentive service, and a fast delivery period have made Zinco very well received by many users. Our AdvantagesProduct quality: Selecting high-quality materials, strictly controlling the production process, the valve is resistant to corrosion and wear, ensuring stable operation under various complex conditions, and the service life far exceeds that of peer products. Technical innovation: We have a professional research and development team, constantly invest in R & D and introduce advanced technologies. Custom service: Fully understand the customer's needs, provide personalized valve solutions, communicate closely from product design to production manufacturing, and ensure that the valve is perfectly adapted to the customer application scenario. Value-for-money advantage: Optimize production processes, reduce costs, guarantee high product quality while providing a highly competitive price, creating higher value for customers. After-sales service: Establish a comprehensive after-sales service system, provide 24-hour technical support, quickly respond to customer after-sales problems, and solve faults in a timely manner, so that customers have no worries.After Sales ServiceAfter the customer feedback on the problem, the technicians within 24 hours carry out fault diagnosis and repair technology to ensure the quality of maintenance and ensure the normal operation of the customer's equipment.
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