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Product Description
I. Product Overview
The manual wafer - type soft - seated butterfly valve uses a lever handle to drive the disc for a 90° rotational movement, enabling on/off control and flow rate regulation of the medium. Its wafer - connection + soft - seal structure offers compactness and reliable sealing. It is widely applied in medium - to - low - pressure systems with clean media across sectors like water plants, power plants, chemical engineering, building water supply/drainage, and food/pharmaceuticals, combining shut - off and throttling capabilities.
II. Core Advantages & Features
1. Outstanding Sealing Performance
- Soft - Seal Pair Design: Utilizes a stainless steel disc + NBR/FKM seal combination. The elastic deformation of the rubber compensates for tolerances, with leakage rates meeting GB/T 13927 standards (some models achieve "zero leakage").
- Optimized Offset/Centric Geometry:
- Double - offset design: The disc tightens more as it closes, enhancing sealing reliability.
- Centric design: Minimizes flow resistance, suitable for high - velocity conditions.
2. Flexible Installation & Operation
- Wafer Connection: The valve body is clamped between pipeline flanges, making it small - sized and lightweight (30%-50% lighter than flange - connected butterfly valves of the same diameter), saving significant installation space.
- Bidirectional Flow Capability: Unaffected by medium flow direction, it can be installed in any orientation (horizontal or vertical pipelines), adapting to complex piping layouts.
- Convenient Manual Operation:
- The lever handle allows effortless 90° fast on/off operation (response in seconds).
- Some models feature an opening indicator dial, vdisc position and enabling linear flow regulation.
3. High Structural Durability
- Framed Disc: Boasts high strength and a large flow - through area, with flow resistance significantly lower than gate/globe valves, reducing system energy consumption.
- Versatile Material Options:
- Valve Body/Disc: Available in ductile iron (QT450 - 10), cast steel (WCB), or stainless steel (304/316), with a painted anti - corrosion finish.
- Seal Ring: Replaceable (mounted on the valve body or disc side) to suit different media (NBR for oil, FKM for high - temperature applications).
III. Technical Parameter Table
| Parameter Category |
Detailed Specifications |
| Nominal Diameter (DN) |
DN50 ~ DN2000 (Mainstream: DN50~DN600; custom - made for large diameters) |
| Nominal Pressure (PN) |
PN0.6, PN1.0, PN1.6 MPa (Suitable for medium - low pressure; upgrade to hard - seal for high pressure) |
| Seat Test Pressure |
0.66MPa (PN0.6), 1.1MPa (PN1.0), 1.76MPa (PN1.6) |
| Shell Test Pressure |
0.9MPa (PN0.6), 1.5MPa (PN1.0), 2.4MPa (PN1.6) |
| Applicable Temperature |
NBR: -40ºC ~ 90ºC; FKM: -20ºC ~ 200ºC (adjusted by seal material) |
| Applicable Media |
Water, air, natural gas, oil, weakly corrosive fluids (media must be clean to avoid seal scratching) |
| Actuation Method |
Manual (lever); upgradable to worm gear, electric, or pneumatic actuators upon request |
IV. Key Component Materials
| Component |
Optional Materials |
Performance Features |
| Valve Body |
Ductile Iron QT450 - 10, Cast Steel (WCB) |
High strength, impact resistance; painted for corrosion protection |
| Disc |
Ductile Iron, Cast Steel, Stainless Steel (304/316) |
Wear - and corrosion - resistant; framed structure boosts strength and flow capacity |
| Stem |
2Cr13 Stainless Steel |
Rust - and torsion - resistant, ensuring reliable transmission |
| Seal Ring |
NBR (oil - resistant), FKM (high - temperature - resistant) |
Elastic sealing, adaptable to different media |
| Packing |
Flexible Graphite |
Stem sealing, temperature - resistant and long - lasting |
V. Compliance Standards
- Manufacturing Standard: GB/T 12238 - 2008 (superseding the obsolete GB/T 122387 - 89; refer to the latest version)
- Flange Standard: GB 9113 - 2000, GB 17241.6 - 1998 (ensuring compatibility with pipeline flanges)
- Face - to - Face Dimension: GB 12221 - 89 (specifying installation dimensions for system compatibility)
- Inspection Standard: GB/T 13927 - 92 (basis for testing seal performance and strength)
VI. Application Scenarios & Limitations
Applicable Scenarios
- Municipal Engineering: Water supply/drainage networks, sewage treatment plants (pump station switching, pre - shutoff for sludge transfer).
- HVAC Systems: Chilled water circuits, fire protection pipelines (fast actuation + low leakage, meeting fire codes).
- Light Industry: Food/beverage (sanitary EPDM seals), pharmaceuticals, textiles (clean fluid pipelines).
- Environmental Projects: Waste gas treatment, desulfurization/denitrification systems (weakly corrosive media, relying on anti - corrosion seals).
Limitations
- Unsuitable for high temperature (>200ºC, soft - seal aging), high pressure (>2.5MPa, seal failure), or abrasive media (e.g., slurry, which easily scratches rubber).
- Frequent throttling accelerates seal aging, requiring regular seal replacement (maintenance cost and frequency increase with harsher conditions).
VII. Installation & Maintenance Guidelines
Installation Tips
- Verify the flow direction indicator (if present). When using wafer connection, tighten flange bolts symmetrically in stages to prevent valve body distortion.
- Orient the lever handle for easy operation (upward for horizontal pipelines, sideward for vertical pipelines), and reserve maintenance space.
Maintenance Recommendations
- Periodic Cleaning: Remove debris from the valve cavity (preventing disc jamming), especially in media with particles.
- Lubrication & Inspection:
- Regularly apply grease to the stem to prevent rust and seizing.
- Inspect the seal surface quarterly; replace worn seals promptly if scratches or aging are found.
Selection Note: Variations in offset design, material grades (e.g., full stainless steel body), and seal ratings exist among manufacturers. When selecting, clarify medium temperature, corrosiveness, particle content, and system pressure. Consult the manufacturer's technical manual for details.
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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