British standard glossary for valves and valve parts ( for fluids ) part5, Ball valves. These valves are used in chemical manufacturing plants. Toggle navigation. Reconditioning metallic gate, globe, and check valves. Main Features: Closure part is with 2 pieces of disc, which will be opened depending on the flow pressure, when flow pressure is stopped, then the disc will be closed energized by the spring. This standard covers design, materials, face-to-face dimensions, pressure-temperature ratings, and examination, inspection, and test requirements for gray iron, ductile iron, bronze, steel, nickel-based alloy, or special alloy butterfly valves. This is a wafer-type check valve that is made of plastic material. API 602Compact Steel Gate Valves Flanged, Threaded, Welding and Extended-Body Ends, API 602 is for 100 NB (4) & smaller forged steel gates valve specication. What is . China check valve manufacturer Landee provides wafer check valve having various dimensions to meet different requirements: cast iron/stainless steel/aluminum bronze/carbon steel . National satnadards of API, ASME, GB, DIN and other related standards are all available upon your request. Tighten the bolts and nuts to the torque recommended by the wafer type check valve manufacturer. Globe Valve ASME B1.1 - Unified Inch Screw Threads, (UN and UNR Thread Form) ASME B16.1 - Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250 The casting process is a mechanical method of producing valves in which the metallic material used to make the valve is heated to very high temperature until it turns from solid to molten form. API 598. ASME B16.34 is the standard in which steel valve pressure/temperature ratings are specied. Email: sales@ntgd.co.uk, Wafer type check valves are valves that are used to prevent fluid from reversing in a piping system. MR-01-75 ASME 16.34,API 598 standards from China manufacturer. In the round passage of the butterfly valve body, the disc revolves around the axis, and the . Bellow Seal Globe Valve Double-flanged Check Valves API Std 594 Class 150-2500 Type A. NPS: . Wafer type check valves are used in different applications such as low to high temperature and pressure applications. Body: ASTM A351 CF8. Type BFR - Flanged . ASME/ANSI B16.10Face-to-Face Dimensions of Ferrous Valves. API 6D is the primary standard for valves used in pipeline service, including gate, plug, ball and check valves. These valves can be used in both low and high temperature and pressure applications. There is low suction pressure relative to the valve spring strength. Metal closure of upper seat 4. API-594: Check Valves: Wafer, Wafer-Lug, and Double Flanged Type BS-5352, Obsolete, replaced by ISO 15761 ISO 15761: Steel Gate, Globe and Check Valves for Sizes DN 100 and Smaller for the Petroleum and Natural Gas Industries (Equivalent to API 602) . Morevoer, various kinds of materials can be used. Horizontal/Vertical installation. Check valves: Flanged, lug, wafer and butt welding: API 598: Valve Inspection and Testing. API 598 covers the testing and inspection requirements for check, gate, globe, ball, plug & buttery valves. Valves Check Valves API Wafer Type Dual Plate (check valve) Specifications It is a casted Flat Check valve , full bore, double plate, spring return, vertical or horizontal mounting, manufactured according API standard. Flange type butterfly valve has flanges on the valve, and bolts are used to connect the flanges at both ends of the valve to the pipe flanges. The valve has good fluid control characteristics. The body material LCC make sure the lug type valve is capable to handle harsh environment, and the INCONEL-X 750 spring promise the valve a long service life. Wafer type check valve manufacturers design these valves with a high level of reliability because they are used in critical applications such as in freshwater supply where any small level of dirty fluid going back to the freshwater may cause health problems. American Petroleum Institute defines standards for oil and natural gas industry. Sanqiao Ind. API Standards API Spec 6D - Specification for Pipeline Valves, End Closures, Connectors and Swivels API Std 594 - Check Valves: Flanged, Lug, Wafer and Butt-welding Butterfly Valve standards API Standards. API 594 API 6D. API 594 API 6D DIN 3202. Screwed and socket weld end valve face-to-face dimensions are not included in this standard. Locking handle standard (2"-12") End of line service on . Wedge Gate Valve Check Valves: Flanged, Lug, Wafer and Butt-welding. . API 609 Butterfly Valves: Double Flanged, Lug- and Wafer-Type. Two categories of butterfly valves are included in the API 609 standard. Diaphragm Valve Manufacturer, NTGD Valve (China) Co. LTD Dual Plate Check Valve VS Full bodied Swing Check Valve . RST Valve company is a industry valves manufacturer, including Thread & Flange Ball Valves, Gate Valves, Globe Valves, Check Valves, Y Strainers in stainless steel, carbon steel, cast steel, forged steel and alloy steel. API 603: Corrosion-resistant, Bolted Bonnet Gate ValvesFlanged and Butt-welding Ends: API 607 Keystone swing type wafer check valve Figure 86 dimensions (mm) size dn a B (pn10/pn16) B1 B2 c d e Q mass (kg) note Dimension B is the outside diameter for isO pn 10/pn 16 flange drilling. It means the check valve will only open if the upstream pressure is more than the downstream pressure. Wafer Check Valve. When the flow decreases, the plates close by the action of torsion spring before flow reversal takes place. The force from the flowing fluid is transmitted onto the valve springs which makes them wind up and thus allows the plates to open. ADD. 2. Furthermore, it can be quickly opened up and closed by revolving 90 , and the operation is straightforward. This is a wafer-type check valve that is made through the forging method. API 560 - Fired Heaters for General Refinery Service, API 579-1/ASME FFS-1 - Fitness-For-Service (FFS), API 620 - Design and Construction of Large, Welded, Low-Pressure Storage Tanks, API 661 - Petroleum, Petrochemical, and Natural Gas Industries Air-Cooled Heat Exchangers, API RP 1160 - Managing System Integrity for Hazardous Liquid Pipelines, API RP 1173 - Pipeline Safety Management Systems, API RP 1176 - Assessment and Management of Cracking in Pipelines, API RP 1188 - Hazardous Liquid Pipeline Facilities Integrity Management, API RP 538 - Industrial Fired Boilers for General Refinery and Petrochemical Service, API RP 571 - Damage Mechanisms Affecting Fixed Equipment in the Refining Industry, API RP 572 - Inspection of Pressure Vessels, API RP 573 - Inspection of Fired Boilers and Heaters, API RP 574 - Inspection Practices for Piping System Components, API RP 575 - Inspection Practices for Atmospheric and Low Pressure Storage Tanks, API RP 576 - Inspection of Pressure-Relieving Devices, API RP 577 - Welding Processes, Inspection, and Metallurgy, API RP 578 - Material Verification for New and Existing Alloy Piping, API RP 581 - Risk Based Inspection Technology, API RP 583 - Corrosion Under Insulation and Fireproofing, API RP 585 - Pressure Equipment Integrity Incident Investigation, API RP 651 - Cathodic Protection of Aboveground Petroleum Storage Tanks, API RP 75 - Safety and Environmental Management System for Offshore Operations, API RP 751 - Safe Operation of Hydrofluoric Acid Alkylation Units, API RP 754 - Process Safety Performance Indicators for the Refining and Petrochemical Industries, API RP 934 - Materials and Fabrication of Heavy Wall Pressure Vessels for High-Pressure Hydrogen Ser, API RP 939-C - Guidelines for Avoiding Sulfidation (Sulfidic) Corrosion Failures in Oil Refineries, API RP 941 - Steels for Hydrogen Service at Elevated Temperatures and Pressures, International Organization for Standardization (ISO), Understanding Valves and Their Role in Mechanical Integrity. From my supplier/manufacturer feedback is (The valve (Wafer type) comply to API594. These valves also have high strength to resist impact and have a long service life. From this principle, the wafer type check valve opens when the suction fluid pressure is high enough to create energy for compressing valve spring to open the disc for fluid flow. info@jlx-valve.com | +34 93 586 36 09 . API Wafer Type Check Valve - Manufacturers, Factory, Suppliers from China. Check valves is usually installed in pipeline system,prevent medium from flowing back.check valve is automatic valve that it is opened and closed by pressure of fluid.In the past, we use H44 flange coupling swing type check valves&H44 flange coupling lift type check valve.Traditional check valve's volume is big,strong resistance of fluid,Water-hammer's pressure is high when valves close,repair . Cast iron body, 316 stainless steel internals and hardware, 316 stainless steel spring, EPDM seal. Cryogenic Service: Almost all Hawa Valves Dual Plate Check Valve types can be designed in a special version suitable for cryogenic service. Type BSR - Solid Lug. API 594 standard covers the design, material, face-to-face dimensions, pressure-temperature ratings, and examination,inspection, and test requirements for two types of check valves. ASME STANDARDS. Wafer Check Valves: API 594, API 6D, Dual Plate, Alloy, Stainless, Carbon Steel, Integral Structure, ANSI Class 150 - 2500, 2 - 48 Inch, or as required. Wafer Type Butterfly Valve: fits between flanges . API Std 594, Check Valves: Flanged, Lug, Wafer, and Butt-welding, is a standard developed and published by the American Petroleum Institute (API) that covers the design, materials, face-to-face dimensions, pressure-temperature ratings, and examination, inspection, and testing requirements for Type "A" and Type "B" check valves. Zone, Oubei Town Wenzhou, Zhejiang, 325105 P.R.China, 2019 Zhejiang Relia Valve Co., Ltd.China, API 599: Metal Plug ValvesFlanged, Threaded, and Welding Ends, A216/A216M Standard Specification for Steel Castings, Carbon, EN ISO 5211: Industrial valves Part-turn actuator attachments (ISO 5211:2017), BS EN ISO 5210: Industrial valves Multi-turn valve actuator attachments, BS EN 558: Industrial valves Face-to-face and centre-to-face dimensions of metal valves. Once the material cools and solidifies it is removed from the mold. There are various types of wafer type check valves which include forged wafer type check valves, casted wafer type check valves, and plastic wafer type check valves. This eBook covers the various valve types, their common uses, governing standards and recommended practices, and their role in the overall mechanical integrity process. We mainly cover the following fields: Ball valve, Check valve, Butterfly valve, Gate valve, Globe Valve, Plug Valve, Safety valve, Pinch Valve and so on. The valve has a simple but reliable and robust construction. Wafer type check valve manufacturers design these valves for use in different applications such as water supply, chemicals, pharmaceuticals, foods and beverages, mining applications, steam power generation plants, and oil and gas industries among others. . Testing Standards API, ANSI, MSS, ISO; Valve Interlock. 2. This helps to ensure the valve is free from fluid leakage. The pipe is also designed with flanged ends to help in enhancing good mating surfaces. Name: Swing type check valve, single disc. This is the part of a wafer type check valve that is used to contain internal parts of the valve. Full Description. It is short in face to face dimensions,being1/4~1/8 times that of traditional flange type check valve. Replace the valve. Wafer Type Solid Lug Type Double Flange type Hub End type Butt weld end type. Wafer check valve with a compact wafer body is non-slam check valve that protects liquid, gas and steam piping components from reverse slow and damaging water hammer. BS EN 1266Industrial Valve- Testing of Metallic Valves, Part 1 Pressure tests, test procedures and acceptance of creteria-mandatory reuirement. Category A is a concentric disk and seat configuration, and Category B has an offset disk configuration [5, 6] that is known as an eccentric butterfly valve or high-performance butterfly valve [6, 7].The butterfly valves in Figs. 3. US Valve Series 31 Wafer Style Check Valves. Wafer type butterfly valve uses double-head bolts to connect the valve between two pipe flanges. All rights reserved. API Std 598 - Valve Inspection and Test. This helps to ensure that the wafer type check valve does not allow any fluid to flow backward into the piping system which can cause fluid contamination like in freshwater supply or chemicals and or foods processing. The flange ends have holes. For Wafer, LUG, or BW connection 5. Valve springs damaged. Wafer type check valves are automatic and thus they do not need a valve actuator or valve operator. In this case, all . Single-Plate; Dual-Plate; Dual-Plate Lug; Dual-Plate Double-flanged; Glossary of Valve Terms. BUTTERFLY VALVE STANDARDS API STANDARDS. manufacturer in India - +91 9825116393. . Inspection & Testing Standard: API 598; Face to face: API 6D; End Conn. : Wafer to Suit ANSI B 16.5 150#/ DIN 2542 (PN 10 and PN 16) /BS 10 Table D/E . MVS single plate swing type wafer check valve comes with a short pattern sandwich type flangeless wafer body conforming to the API 6D and ASME B 16.10 face to face dimensions. ASME B1.1 - Unified Inch Screw Threads, (UN and UNR Thread Form) ASME B16.1 - Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250 MSS SP 144 - Pressure-Seal Bonnet Valves. Single-Plate; Dual-Plate; Dual-Plate Lug; Dual-Plate Double-flanged; Glossary of Valve Terms. 1 Structure introduction January 1, 2020 - MSS. A wafer-type check valve made of soft materials like rubber and plastic is recommended for use in low-temperature applications below 60 oC. This results is uniform design of equipments and parts withreplaceability across various manufacturers. National satnadards of API, ASME, GB, DIN and other related standards are all available upon your request. Valve Terms Glossary; Car Seal - CSO/CSC. Wafer Check Valves API Std 594 Class 150-2500 Type A. NPS: . Key Specifications / Features. This document has been replaced. Email: sales@ntgdvalve.com Double Block And Bleed Valve, Gate Valve Knife Gate Valve Manufacturer These valves are used in foods and beverages manufacturing plants. Wafer type check valve manufacturer recommend these valves for use where the temperature is below 60 oC.
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