Top-Tier Valve Solutions
FD Series Wafer butterfly valve
High performance wafer connection butterfly valve engineered for optimal flow control and sealing efficiency under various pressures.
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TWS Air release valve
Designed to automatically release accumulated air from pipelines, ensuring smooth system operation and preventing water hammer.
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UD Series hard-seated butterfly valve
Constructed with high-strength materials to deliver superior performance in severe industrial environments requiring metal-to-metal seating.
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ED Series Wafer butterfly valve
An economical, reliable wafer-style valve featuring a resilient seat design for zero-leakage isolation in water lines.
Learn More →Kawachi's Evolving Industrial Landscape
Kawachi, recognized for its vibrant industrial base and rich engineering history, is currently experiencing a massive modernization phase. As local manufacturing facilities, chemical plants, and municipal water infrastructures seek to optimize their operations, the demand for highly reliable flow control systems has grown exponentially. The transition to smart factory environments and environmentally sustainable processes dictates that every component—especially industrial valves—must meet strict standards of efficiency and longevity.
Within this dynamic, the U Type Butterfly Valve has emerged as a cornerstone technology. Its unique flanged body design allows for easy installation, high structural integrity, and bidirectional sealing capability, making it the preferred choice for engineers in Kawachi. Local suppliers and global manufacturers are closely collaborating to provide customized fluid control solutions that withstand the rigorous demands of modern industrial processing.
The Role of U Type Butterfly Valves
Unlike standard wafer or lug type valves, the U Type Butterfly Valve features a body shape with bolt lugs running around the entire perimeter, styled like a U-section. This structure allows the valve to be installed between two pipe flanges using separate bolts for each flange, facilitating dead-end service or downstream pipeline maintenance without shutting down the entire system.
In Kawachi's water distribution networks, agricultural irrigation systems, and cooling towers, this design translates to reduced downtime, lower maintenance costs, and exceptional safety. By minimizing turbulence and pressure drops, U Type butterfly valves optimize hydraulic efficiency, contributing significantly to energy conservation goals across the region's industrial sectors.
Key Industry Trends & Innovations
Smart Actuation Integration
Modern U Type butterfly valves are increasingly integrated with electric and pneumatic actuators with IP67/IP68 protection. This enables automated, precise remote flow regulation aligned with IoT and Industry 4.0 frameworks.
Corrosion-Resistant Materials
With seawater desalination and chemical processing on the rise, advanced coatings and materials such as Duplex Stainless Steel, Al-Bronze, and specialized epoxy coatings are becoming standard to ensure long-term durability.
Eco-Friendly & Green Standards
Environmental regulations demand zero-leakage performance to protect local ecosystems. Resilient seated systems certified by WRAS and CE guarantee safe drinking water management and non-polluting operations.
Who We Are: Tianjin Tanggu Water-Seal Valve Co., Ltd.
Established in 2003, Tianjin Tanggu Water-Seal Valve Co., Ltd. (TWS Valve) is a leading professional manufacturer that integrates design, development, production, installation, sales, and service under one roof. We operate two state-of-the-art production plants: one in Xiaozhan Town, Jinnan, Tianjin, and the other in Gegu Town, Jinnan, Tianjin. Over the past two decades, we have evolved into one of China's premier suppliers of water management valve products and customized system solutions.
We pride ourselves on our core brand "TWS", which represents our commitment to "All For Customers, All From Innovation." Our quality management system is strictly certified by ISO 9001, and our extensive product range carries globally recognized approvals including CE, WRAS, ISO14001, EN1074-1, ABS, and CCS. Through continuous engineering innovation, we deliver unmatched value to our global clients.
Our Core Philosophy
"Elaborately cast with a brand-new concept, and constantly deduce unique TWS Valve's masterpieces. We are dedicated to defining new standards in valves for water."
Why Choose TWS Valve?
TWS Valve offers a comprehensive product portfolio tailored to meet the diverse needs of modern water infrastructure and industrial processes. Our core offerings include a complete series of Resilient Seated Butterfly Valves (wafer, lug, U-section, flanged concentric, flanged eccentric, and grooved end types), Flanged Rubber Seated Gate Valves, Flanged Swing Check Valves, Dual Plate Check Valves, and Y Strainers.
To meet evolving water management demands, we continuously diversify our catalog with advanced balancing valves, air release valves, and backflow preventers. Furthermore, we design and manufacture our own IP67/IP68 grade gearboxes and electric actuators, ensuring an optimal, seamless integration with our valve assemblies for maximum reliability and control precision.
Localized Application Scenarios in Kawachi
In Kawachi, our U Type Butterfly Valves and specialized fluid control systems are implemented across several critical sectors:
- Seawater Desalination: Utilizing special coatings and corrosion-resistant disc/seat materials to handle harsh marine media.
- High-Rise Building Water Systems: High-pressure soft-sealed centerline butterfly valves engineered for high pressure resistance and low flow resistance.
- Flue Gas Desulfurization (FGD): Specialized flange and wafer centerline butterfly valves built to withstand corrosive chemicals and abrasive media in environmental protection plants.
- Municipal Sewage & Water Treatment: Reliable isolation and control solutions that prevent backflow and maintain hydraulic balance.
High-Performance Product Portfolio
YD Series Wafer butterfly valve
Features a universal flange connection and lightweight aluminum handle. Ideal for desulphurization, vacuum, and seawater desalination.
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MD Series Lug butterfly valve
Allows downstream pipelines and equipment online repair. Ideal as an exhaust valve at pipeline ends for cost savings.
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DL Series flanged concentric butterfly valve
Constructed with a centric disc and bonded liner, offering high body strength and superior resistance to pipeline pressures.
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UD Series Soft-seated butterfly valve
Wafer pattern with EN558-1 20 series face-to-face dimensions. Soft sleeve seat isolates body from media completely.
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DC Series flanged eccentric butterfly valve
Incorporates a positive retained resilient disc seal. Delivers lower torque, higher strength, and lighter weight.
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EH Series Dual plate wafer check valve
Equipped with dual torsion springs for rapid, automatic plate closure to prevent backflow in pipelines.
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TWS Flanged Y strainer According to DIN3202 F1
Removes unwanted solids from liquid or gas lines to protect pumps, control valves, and process equipment.
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TWS Flanged static balancing valve
Ensures static hydraulic balance across heating, ventilation, and air conditioning (HVAC) water systems.
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Flanged Backflow Preventer
A safety combination device designed to limit pipeline pressure and prevent backflow pollution in municipal lines.
See Details →Certifications & Quality Assurance
Our commitment to quality is backed by globally recognized standards. TWS valves undergo rigorous testing to ensure safety, reliability, and long service life in demanding environments.
CE, ISO9001, ISO14001, WRAS, EN1074-1, ABS, CCS
Cooperation Cases & Projects
TWS Valves are widely used in water treatment, water distribution, wastewater management, dams and hydropower, power plants, and general industry. Due to our high quality, competitive pricing, and professional service, our products have been successfully exported to Europe, North America, South America, Southeast Asia, Africa, and beyond. We are proud to be a long-term, reliable partner for many world-famous valve brands.
Our Core Product Line
FD Series Wafer butterfly valve
Reliable wafer-style layout designed for efficient space saving and long-term bubble-tight sealing.
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TWS Air release valve
Maintains optimal pipeline pressure by preventing air pockets and maximizing flow throughput.
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UD Series hard-seated butterfly valve
Heavy-duty construction engineered to perform in extreme temperatures and abrasive fluid media.
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ED Series Wafer butterfly valve
Offers standard wafer dimension compatibility with a robust liner for general industrial applications.
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Worm Gear Actuator
Manual high efficiency worm gear actuator based on 3D CAD modular design, conforming to AWWA C504 and API 6D.
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EZ Series Resilient seated NRS gate valve
Non-rising stem gate valve featuring an integrally rubber-clad ductile iron wedge for zero-leakage water control.
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WZ Series Metal seated NRS gate valve
Durable metal-seated NRS gate valve built to withstand challenging municipal and industrial sewage systems.
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IP 67 Worm Gear with handwheel DN40-1600
Robust casting ductile iron gearbox with IP67 protection, designed for large diameter butterfly and ball valves.
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