Product Description
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1. Product Overview
The manual turbine wafer-type soft-seal butterfly valve (typical model: D371X series) is a control valve for media shut-off and flow regulation in industrial piping systems. It uses a worm gear transmission to rotate the butterfly disc (0°-90°), enabling fluid control. With a wafer-type connection (clamped between pipeline flanges) and soft-seal technology (rubber/PTFE sealing), it suits clean or mildly corrosive media (water, air, oil, etc.). Widely applied in industries like water treatment, power generation, chemical processing, and food & pharmaceuticals for manual fluid management.
2. Core Structure & Working Principle
- Worm Gear Transmission: Reduces operating torque, making it easy to handle large diameters (DN > 200) or frequent actuation. Some models include position indicators for precise flow adjustment.
- Wafer-type Connection: Eliminates extra flanges, saving space and installation costs (directly clamped between pipeline flanges).
- Soft-seal Design: Uses rubber (NBR, FPM) or PTFE as the sealing pair. Elastic deformation ensures low leakage under low pressure; double-eccentric models (optional) feature "self-tightening" sealing (tighter as pressure increases).
3. Key Features
- Reliable Sealing:
- Double-eccentric structure + soft-seal → Bidirectional zero leakage (compliant with GB/T 13927-92).
- Modular seals (rubber/PTFE) → Easy replacement, reducing maintenance costs.
- Labor-Saving Operation: Worm gear transmission lowers torque → Effortless manual control for large diameters.
- Adaptability:
- Valve body materials: Ductile iron (QT450-10), cast steel (WCB), stainless steel (304/316) → Suits diverse corrosion needs.
- Seal options: NBR (ambient temp), FPM (high temp), PTFE (mild corrosion) → Matches media temperature/corrosivity.
- Durability: Epoxy coating resists rust; frame-structured disc → High strength, low flow resistance.
4. Technical Parameters (Typical Range)
| Parameter |
Details |
| Nominal Diameter (DN) |
DN50-DN2000 (commonly DN50-DN1200) |
| Nominal Pressure (PN) |
PN0.6, 1.0, 1.6 MPa |
| Test Pressure |
- Seal: 0.66/1.1/1.76 MPa (matching PN)
- Shell: 0.9/1.5/2.4 MPa (matching PN) |
| Operating Temperature |
- NBR: -40ºC-90ºC
- FPM: -20ºC-200ºC
- PTFE: -5ºC-180ºC |
| Applicable Media |
Water, air, oil, natural gas, mildly corrosive fluids |
| Drive Type |
Manual worm gear (extendable to electric/pneumatic) |
5. Main Component Materials
| Component |
Material Options |
Application |
| Valve Body |
Ductile iron (QT450-10), cast steel (WCB), 304/316 stainless steel |
Standard/mild corrosion services |
| Butterfly Disc |
Matches valve body material (WCB, QT450-10, etc.) |
Ensures structural strength |
| Valve Stem |
2Cr13 stainless steel, 304 stainless steel |
Corrosion/wear resistance |
| Sealing Ring |
NBR (standard), FPM (high temp), PTFE (mild corrosion) |
Select by media temp/corrosivity |
6. Compliance Standards
- Design/Manufacturing: GB/T 12238-2008 (ensures structural consistency).
- Testing/Inspection: GB/T 13927-92 (verifies seal performance and pressure resistance).
- Dimensions: GB/T 12221-89 (wafer-type installation compatibility).
- Flange Connection: GB 9113-2000 (matches pipeline flanges).
7. Application Scenarios
- Municipal Engineering: Water supply/drainage, sewage treatment (clean/sewage pipelines).
- Industrial Systems: Chemical plants (mildly corrosive fluids), power plants (cooling water/steam), food/pharmaceutical industries (sanitary pipelines, soft-seal prevents contamination).
- General Fluid Control: Air/oil pipelines (on-off/flow regulation).
8. Selection Recommendations
- Media & Temperature:
- Ambient clean water → NBR seal + ductile iron body (cost-effective).
- High-temperature oil → FPM seal + cast steel body.
- Mild acids/alkalis → PTFE seal + 316 stainless steel body.
- Pressure & Diameter:
- Match PN to system pressure (1.2× safety margin).
- Large diameters (DN > 200) → Prioritize worm gear actuation (reduces torque).
- Installation & Operation:
- Space-constrained → Wafer-type (priority).
- Precise adjustment → Models with position indicators.
- Special Needs:
- Strong corrosion → Stainless steel body + PTFE seal.
- Sanitary applications → Food-grade seal materials (e.g., NBR/FPM compliant with FDA).
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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