Product Description
Product Introduction
A knife gate valve, also known as a knife - edged gate valve, is a type of valve where the closing member is a blade - shaped gate. The movement direction of the gate is perpendicular to the fluid direction. It cuts off the medium by means of the blade - shaped gate that can cut fibrous materials. The gate has two sealing surfaces, and in common knife gate valves, the two sealing surfaces form a wedge - shape, with the wedge angle varying according to valve parameters, usually 5°. During closing, the sealing surfaces can achieve sealing relying on the medium pressure (self - sealing) or external force (forced sealing).
Structural Features
- Valve Body: Made of various materials such as cast iron, cast steel, carbon steel, stainless steel, and fluorine - lined materials. Some valve bodies are spray - painted for anti - corrosion, anti - wear, and dust - proof purposes.
- Gate: Made of materials capable of cutting fibrous materials. Some gates can be made into elastic structures to compensate for machining deviations of the sealing surface angle.
- Seals: Available in hard seals (such as metal seals) and soft seals (such as rubber and fluoroplastic seals). There are also different sealing forms like single - sided sealing and double - sided sealing.
- Actuating Devices: Options include manual, chain - wheel, electric, pneumatic, hydraulic, bevel gear, electro - hydraulic, and pneumatic - hydraulic actuation.
Product Specifications
- Size: Common nominal diameters range from DN50 - DN2000, and products with a wider range are also available.
- Pressure: Nominal pressure typically ranges from PN1.0 - 16.0MPa, with different models corresponding to different working pressures.
- Temperature: The working temperature range varies depending on the sealing pair material and medium. Generally, it can be 0 - 1100ºC, and there are also ranges like - 196ºC - 425ºC.
Performance Advantages
- Space - Saving: Compact structure requires less installation space.
- Low Flow Resistance: Allows smooth medium flow with low energy loss.
- Less Debris Accumulation: Special structure prevents debris from easily staying inside.
- Lightweight: Some bodies are made of carbon steel and other materials, reducing weight by 20% - 30% compared to traditional gate valves, facilitating installation and maintenance.
- Long Service Life: Sealing surfaces are made of highly wear - resistant and corrosion - resistant materials like ceramics. Through inlaying technology, they have good corrosion and wear resistance.
- Versatile Functionality: Has dual functions of shut - off or shut - off + throttling. Some can lift the gate sealing surface to scrape off adhered substances and automatically remove debris.
Application Fields
- Mining and Steel Industry: Used in pipeline systems for coal washing, gangue discharging, slag discharging, filter residue slurry handling, and ash discharging.
- Sewage Treatment: Controls the flow of sewage and other media in urban sewage treatment systems.
- Paper - making Industry: Suitable for pipelines transporting pulp and stock - water mixtures of any consistency.
- Power Stations: Applied in ash - removal system pipelines for ash - slag slurry.
- Chemical Industry: Used in pipeline systems of the petroleum, chemical, and pharmaceutical industries to cut off or open fluid media.
- Others: Also used in water conservancy projects to regulate water flow, in thermal engineering to adjust boiler medium flow, and in urban water supply networks to control water supply pressure and flow.
Execution Standards
There are corresponding national standards for aspects such as the pressure - temperature rating of shell materials, the structural length and limit deviations of the valve body, the connection dimensions and sealing surface types of flanges, and the dimensional tolerances of valve stems and valve stem nuts, such as GB 9131, GB/T 15188.2, etc.
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.
){kind=link}