Product Description
1. Basic Information
- Definition: A valve that is connected to pipes through flanges. It opens and closes by the rotation of the butterfly disc inside the valve body, and is used to cut off or regulate the flow of the medium in the pipeline.
- Connection Method: It has flanges at both ends, which are connected to the flanges at the two ends of the pipeline by bolts. Installation and disassembly are relatively convenient, but it has a long structure, heavy weight, and slightly higher cost.
2. Specification Parameters
- Nominal Diameter: Commonly ranges from DN50 - DN2000mm, and some products can exceed this range.
- Nominal Pressure: Covers PN0.25MPa - PN6.4MPa, etc. Commonly, there are PN0.6MPa, PN1.0MPa, and PN1.6MPa.
- Applicable Temperature: For soft - sealed types, it is generally - 40ºC - 90ºC, and for special types, it can reach - 20ºC - 200ºC; for hard - sealed types, carbon steel materials ≤425ºC, stainless steel materials ≤600ºC, and some can reach - 40ºC - 650ºC.
- Applicable Media: Weakly corrosive and corrosive fluids such as water, air, natural gas, oil products, steam, gas, acids, and alkalis.
3. Structure and Materials
- Valve Body: Materials include ductile iron, WCB carbon steel, stainless steel (304, 316, etc.), chromium - molybdenum - vanadium steel, etc.
- Butterfly Disc: Made of carbon steel, stainless steel, chromium - molybdenum - vanadium steel. Some butterfly discs are nickel - plated on the surface to prevent corrosion and medium pollution.
- Valve Stem: Usually made of 2Cr13 stainless steel, 304 stainless steel, chromium - molybdenum - vanadium steel, etc., to ensure strength and corrosion resistance.
- Sealing Ring: For soft seals, EPDM rubber, NBR rubber, PTFE (polytetrafluoroethylene), etc. are commonly used; for hard seals, stainless steel, polytetrafluoroethylene, hard - soft laminated metal sheets, etc. are used.
- Valve Seat: Made of stainless steel, Stellite hard alloy, etc.
4. Product Features
- Quick Opening and Closing: The butterfly disc can complete opening and closing by rotating 90°, with fast operation.
- Low Flow Resistance: When the valve is open, the butterfly disc has little obstruction to the medium, resulting in a small pressure drop and good flow control characteristics.
- Sealing Performance: Soft seals can achieve good sealing with low leakage in both directions; hard seals combine the advantages of elastic and metal hard seals, with excellent sealing performance at high and low temperatures.
- Compact and Light - weight Structure: Small in size and light in weight, with low requirements for installation space.
- Easy Maintenance: Some sealing parts can be replaced, and maintenance is simple.
- Corrosion Resistance: By choosing appropriate materials, it can adapt to various corrosive medium working conditions.
5. Working Principle
By rotating the handle, worm - gear transmission device, electric or pneumatic actuator, etc., the valve stem is driven to rotate, and the valve stem then drives the butterfly disc to make a 90° rotational movement inside the valve body. When the butterfly disc is fully open, the medium can pass through smoothly; when it is fully closed, the medium flow is cut off; when it is at an intermediate angle, the medium flow can be regulated.
6. Execution Standards
- Design and Manufacture: GB/T12238, etc.
- Structural Length: GB12221 - 2005, etc.
- Pressure Test: GB/T13927 - 2008, etc.
- Flange Standards: GB/T9119 - 2010, GB9113 - 2000, GB17241.6 - 1998, etc.
7. Application Fields
- Water Supply and Drainage Systems: Urban water supply and drainage pipelines, internal building water supply and drainage pipelines, etc., for controlling water flow.
- Petrochemical Industry: Chemical raw material transportation pipelines, medium control during chemical reactions, oil transportation, etc.
- Power Industry: Power plant circulating water systems, steam pipeline systems, etc.
- Food and Pharmaceutical Industries: Meeting the requirements for hygiene and sealing in the production processes of food and medicine, and controlling medium transportation.
- Metallurgical Industry: Used for the transportation and control of gas and liquid media.
- Others: Such as natural gas transportation, shipbuilding, and other fields.
8. Installation and Maintenance
- Installation: Before installation, check whether the specifications, pressure, temperature, and corrosion resistance meet the requirements, and check whether the components are damaged or loose; it can be installed on pipelines at any angle, preferably in a closed state; protect the sealing surface when welding pipeline flanges, and clean it after welding; pay attention to the pressure - bearing direction in the closed state; wipe the sealing surface clean; test the valve without load to ensure flexible opening and closing and accurate position indication; for pressure tests, use double - flange installation for pressure testing, and tighten the bolts alternately and symmetrically.
- Maintenance: Regularly check the wear of the sealing parts and replace them if necessary; check the tightness of the bolts at the valve connection parts; clean the impurities on the surface and inside the valve; when malfunctions such as abnormal opening and closing occur, troubleshoot and repair in time.
Packaging & Shipping
Company Profile
Rooted in a legacy of excellence, Tianjin Auswell Valve Co., Ltd. proudly adheres to a multitude of international standards including those from China, Germany, Britain, America, Japan, and Australia. Our versatile range spans nominal diameters from DN15 to DN3000, pressure classes from 0.60 Mpa to 6.4 Mpa, and is capable of operating within temperatures from -20°C to 150°C. With a rich palette of materials like gray cast iron, ductile iron, cast steel, stainless steel, and duplex steel, our repertoire includes precision-crafted soft-sealed butterfly valves, soft-sealed gate valves, check valves, filters, ball valves, globe valves, balance valves, and diaphragm valves.
Driven by a relentless pursuit of perfection, Tianjin Auswell Valve Co., Ltd. has significantly bolstered its management framework in recent years to meet and anticipate our clients' needs. We've proudly garnered the prestigious ISO9001 Quality Management System Certification and the esteemed British WARS Drinking Water Certification. Our product offerings, celebrated for their reliability, have made their mark across Europe, Asia, Africa, and beyond, earning widespread acclaim and trust from our clientele. Upholding our commitment to quality, we at Auswell Valve Co., Ltd. are eager to collaborate fully with peers in the valve industry. Together, we strive to elevate Chinese craftsmanship onto the global stage.
Tianjin Auswell Valve Co., Ltd. It is nestled in a storied historical town in China, a place celebrated for its rich military legacy and famed for its rice cultivation. Industrial Park, Xiaozhan Town, Jinnan District, Tianjin. Here, our company boasts comprehensive production capabilities, from innovative product design and precise mold manufacturing to advanced machining, meticulous rubber smelting, epoxy spraying, and rigorous valve assembly and testing.
With state-of-the-art processing equipment and exquisite craftsmanship, we assure that every product aligns with national or international standards, reflecting our commitment to excellence. Our dedication to superior craftsmanship ensures that we deliver only the highest quality products to our valued customers.
Rooted in a legacy of excellence, Tianjin Auswell Valve Co., Ltd. proudly adheres to a multitude of international standards including those from China, Germany, Britain, America, Japan, and Australia. Our versatile range spans nominal diameters from DN15 to DN3000, pressure classes from 0.60 Mpa to 6.4 Mpa, and is capable of operating within temperatures from -20°C to 150°C. With a rich palette of materials like gray cast iron, ductile iron, cast steel, stainless steel, and duplex steel, our repertoire includes precision-crafted soft-sealed butterfly valves, soft-sealed gate valves, check valves, filters, ball valves, globe valves, balance valves, and diaphragm valves.
Rooted in a legacy of excellence, Tianjin Auswell Valve Co., Ltd. proudly adheres to a multitude of international standards including those from China, Germany, Britain, America, Japan, and Australia. Our versatile range spans nominal diameters from DN15 to DN3000, pressure classes from 0.60 Mpa to 6.4 Mpa, and is capable of operating within temperatures from -20°C to 150°C. With a rich palette of materials like gray cast iron, ductile iron, cast steel, stainless steel, and duplex steel, our repertoire includes precision-crafted soft-sealed butterfly valves, soft-sealed gate valves, check valves, filters, ball valves, globe valves, balance valves, and diaphragm valves.
Driven by a relentless pursuit of perfection, Tianjin Auswell Valve Co., Ltd. has significantly bolstered its management framework in recent years to meet and anticipate our clients' needs. We've proudly garnered the prestigious ISO9001 Quality Management System Certification and the esteemed British WARS Drinking Water Certification. Our product offerings, celebrated for their reliability, have made their mark across Europe, Asia, Africa, and beyond, earning widespread acclaim and trust from our clientele. Upholding our commitment to quality, we at Auswell Valve Co., Ltd. are eager to collaborate fully with peers in the valve industry. Together, we strive to elevate Chinese craftsmanship onto the global stage.
After Sales Service
Our advantage :Hoswell valve company distinguishes itself with a comprehensive set of strengths. We possess in - house independent R & D capabilities, backed by state - of - the - art processing equipment. Our manufacturing processes adhere to industry - leading standards, and we operate a rigorous quality control system.
Product Quality Assurance
Quality Commitment and Inspection: Before leaving the factory, valves need to undergo strict quality inspections, such as pressure tests, sealing tests, etc. It is ensured that there are no casting defects like sand holes or air holes in the valves, and there are no bruises or scratches on the flange sealing surfaces. The markings of flow rate, direction, nominal pressure, diameter, material, etc. are clear and complete. It is promised that the valves are produced and inspected in accordance with national standards, and unqualified products will not leave the factory.
Warranty Period Service: Provide a certain period of warranty service. During the warranty period, for malfunctions caused by product quality problems, the manufacturer will repair or replace parts free of charge.
Technical Support
Pre-sales Consultation: Before customers purchase valves, provide them with professional technical consultations, including suggestions on product selection, specification parameters, material characteristics, applicable working conditions, etc., to help customers choose the most suitable valve products.
Installation Guidance: Provide installation guidance services, which can be carried out online (such as by phone, video, installation manuals, etc.) or offline (by sending technicians to the site) to ensure that the valves are installed correctly and avoid problems caused by improper installation.
Usage Training: Provide usage training for customer operators, enabling them to be familiar with the operation methods of the valves, key maintenance points, knowledge of troubleshooting common faults, etc., and improving the customers' ability to use and maintain the valves.
Supply of Maintenance Parts: Ensure the timely supply of maintenance parts. For the damage of parts outside the warranty period, provide the parts at a reasonable price (such as the cost price).
Regular Follow-up Visits: Regularly conduct follow-up visits to customers, understand the usage situation of the valves, and collect customers' feedback opinions, so as to improve the products and services.
FAQ
1) Q: Are you a manufacturer or trading company?
A: Hoswell Valve is a professional valve manufacturer with experienced R&D team.
2) Q: Do you have any agent or representative abroad?
A: Yes, we have agents in some countries, they can offer local service for you.
3) Q: What kinds of valve can you supply?
A: We can supply butterfly valve, ball valve, check valve and so on.
4) Q: Do you have any certificate for the valves?
A: Yes, we have CE, BV, ATEX, TS and so on.
5) Q: What's the delivery time?
A: If all the parts of the valve are ready in stock, the valves can be delivered within 7~10 days.
6) Q: What are the countries or regions you supply valves?
A: Hoswell valves have been supplied to USA, Europe, Australia, Singapore, South Africa and so on.
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