Featured Plumbing Control Valves
Optimizing High-Rise Water Networks: The Critical Role of Rubber Seated Gate Valves
In the complex architecture of modern commercial and residential buildings, plumbing systems act as the vital circulatory network. Ensuring the uninterrupted, safe, and efficient distribution of potable water, HVAC cooling, and fire suppression liquids requires high-performance flow control mechanisms. The Rubber Seated Gate Valve For Building Plumbing Control serves as a foundational component in these networks, providing reliable isolation capabilities that prevent backflow, system contamination, and pressure loss.
Unlike traditional metal-to-metal seated gate valves, which are prone to scale buildup, mineral deposits, and subsequent leakage, resilient or rubber seated gate valves utilize an EPDM or NBR rubber-encapsulated wedge. This design ensures a bubble-tight shutoff even under low pressures, as the resilient material conforms perfectly to the interior contours of the valve body. For building managers and mechanical engineers, this translates to reduced maintenance costs, zero fluid loss, and a significantly extended system lifespan.
Industrial & Commercial Landscape of Building Flow Control
The global construction industry is undergoing a massive shift towards green building certifications such as LEED and BREEAM. Consequently, plumbing networks are under strict scrutiny to optimize water conservation and energy efficiency. Resilient seated gate valves are highly preferred in these initiatives because they offer a full-bore flow path. This structure minimizes flow resistance and friction loss, allowing pumps to operate at lower energy levels.
Furthermore, municipal regulations worldwide are tightening standards regarding lead content in drinking water systems. Modern rubber seated gate valves, constructed with premium ductile iron bodies coated with non-toxic epoxy coatings (FBE) and certified by international bodies like WRAS and CE, ensure that water quality remains uncompromised from the municipal main to the consumer's tap.
- Zero Leakage Performance: The vulcanized rubber wedge compresses to fill every micro-gap, ensuring complete isolation.
- Corrosion Prevention: Internal and external fusion-bonded epoxy coating shields the valve body from aggressive media and rust.
- Low Operating Torque: Smooth interaction between the rubber wedge and the epoxy-lined body reduces the force required to open or close the valve.
- Debris Tolerance: The soft rubber wedge can absorb minor solid particulates without damaging the sealing surface.
Tianjin Tanggu Water-Seal Valve Co., Ltd.
All For Customers, All From Innovation
Tianjin Tanggu Water-Seal Valve Co., Ltd. (TWS Valve) was founded in 2003 and has grown to become a professional manufacturer integrating design, development, production, installation, sales, and service. With two state-of-the-art plants located in Xiaozhan Town and Gegu Town, Jinnan District, Tianjin, we have established ourselves as one of China's leading suppliers of water management valve products and solutions.
Over the years, we have built up our strong proprietary brand "TWS". TWS Valve's quality system is strictly certified by ISO 9001, and the majority of our products carry prestigious approvals including CE and WRAS, ensuring compliance with strict international safety and performance standards.
Established
Tianjin Tanggu Water-Seal Valve Co., Ltd (TWS Valve) was founded in 2003, bringing nearly two decades of engineering excellence to the water control industry.
Brand
Furthermore, we have built up our own strong brands "TWS", recognized globally for durability, innovation, and precision engineering.
Quality
TWS Valve's quality system is strictly certified by ISO 9001, and most products have approval of CE and WRAS for drinking water applications.
Deep Application Scenarios of Gate Valves in Building Plumbing Control
1. Potable Water Distribution Systems
Potable water networks demand the highest levels of sanitation and material safety. Resilient seated gate valves are standard installations at main line entry points, riser branches, and utility connection junctions. The EPDM rubber used on the wedge is certified to be free of toxic compounds, preventing chemical leaching into the public water supply. The full-bore design prevents stagnation zones, minimizing the risk of bacterial growth, such as Legionella, inside the pipe network.
2. HVAC and Chilled Water Isolation
Heating, ventilation, and air conditioning (HVAC) systems in commercial high-rises run continuously, demanding robust component reliability. Rubber seated gate valves are used to isolate pumps, chillers, and cooling towers during routine maintenance. Their ability to shut off tightly against high static heads ensures that maintenance crews can work safely on downstream equipment without system-wide drainage.
3. Fire Protection and Standpipe Systems
In fire protection systems, valve failure is not an option. Resilient seated gate valves, particularly Rising Stem (OS&Y) configurations, are installed to control the flow to sprinkler networks and standpipes. The visible stem allows inspectors to instantly verify if the valve is open or closed, while the rubber seat ensures that no mineral deposits can freeze the valve in place over long periods of inactivity.
4. Industrial Water Treatment & Desalination
For buildings situated in coastal regions or relying on localized water treatment plants, desalination systems present extremely corrosive environments. Under these conditions, standard valves fail rapidly. TWS Valve designs specialized solutions, including special coating butterfly valves and rubber seated gate valves with duplex stainless steel stems, to withstand the aggressive chloride concentrations found in seawater.
Our Main Products Portfolio
YD Series Wafer butterfly valve
Description: YD Series Wafer butterfly valve's flange connection is universal standard, and the material of handle is aluminium; It can be used as a device to cut-off or regulate the flow in various medium pipes. Through selecting different materials of disc and seal seat, as well as the pinless connection between disc and stem, the valve can be applied to worse conditions, such as desulphurization vacuum, sea water desalinization.
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MD Series Lug butterfly valve
Description: MD Series Lug type butterfly valve allows downstream pipelines and equipments online repair, and it can be installed on pipe ends as exhaust valve. Alignment features of lugged body allows easy installation between pipeline flanges. a real installation cost saving, can be installed in the pipe end.
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DL Series flanged concentric butterfly valve
Description: DL Series flanged concentric butterfly valve is with centric disc and bonded liner, and have all same common features of other wafer/lug series, these valves are featured by a higher strength of the body and better resistance to pipe pressures as safety factor.
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UD Series Soft-seated butterfly valve
UD Series soft sleeve seated butterfly valve is Wafer pattern with flanges, the face to face is EN558-1 20 series as wafer type. Characteristics: Correcting holes are made on flange according to standard, easy correcting during the installation; Through-out bolt or one-side bolt used.
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DC Series flanged eccentric butterfly valve
Description: DC Series flanged eccentric butterfly valve incorporates a positive retained resilient disc seal and either an integral body seat. The valve has three unique attributes: less weight, more strength and lower torque. Suitable for on/off and modulating service.
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EZ Series Resilient seated NRS gate valve
Description: EZ Series Resilient seated NRS gate valve is a wedge gate valve and Non-rising stem type, and suitable for use with water and neutral liquids (sewage). Characteristic: On-line replacement of top seal; Integral rubber-clad disc; Integrated brass nut by means of special casting process.
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EH Series Dual plate wafer check valve
Description: EH Series Dual plate wafer check valve is with two torsion springs added to each of pair valve plates, which close the plates quickly and automatically, that can prevent the medium from flowing back. The check valve can be installed on both horizontal and vertical pipelines.
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TWS Flanged Y strainer According to DIN3202 F1
Description: TWS Flanged Y Strainer is device for mechanically removing unwanted solids from liquid, gas or steam lines by means of a perforated or wire mesh straining element. They are used in pipelines to protect pumps, meters, control valves, steam traps, regulators and other process equipment.
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TWS Flanged static balancing valve
Description: TWS Flanged Static balancing valve is a key hydraulic balance product used for precise flow regulating of water pipelines system in HVAC application to ensure static hydraulic balance across whole water system. Widely used in main pipes, branch pipes and terminal equipment.
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TWS Air release valve
Description: The composite high-speed air release valve are combined with two parts of high-pressure diaphragm air valve and the low pressure inlet and exhaust valve, It has both exhaust and intake functions. Automatically discharges the small amount of air accumulated in the pipeline.
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Flanged Backflow Preventer
Description: Slight resistance Non-return Backflow Preventer (Flanged Type) TWS-DFQ4TX-10/16Q-D is a kind of water control combination device developed by our company, mainly used for water supply from urban unit to the general sewage unit strictly limiting the pipeline pressure to ensure one-way flow.
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Worm Gear
Description: TWS produces series manual high efficiency worm gear actuator, is based on the 3D CAD framework of modular design, the rated speed ratio can meet the input torque of all different standards, such as AWWA C504 API 6D, API 600 and others. Widely applied for butterfly, ball, and plug valves.
See more productsTechnological Specialties & Industry Solutions
◆ Special butterfly valve for seawater desalination: The medium flow part adopts new special coatings and materials according to different working conditions to meet the needs of the seawater desalination industry.
◆ The high-pressure soft-sealed centerline butterfly valve: Meets the needs of high-pressure water pipelines, water supply and drainage in high-rise buildings and other working conditions, and has the characteristics of high pressure resistance, low flow resistance, etc.
◆ Desulfurization flange / wafer centerline butterfly valves: Are widely used in flue gas desulfurization and other similar working conditions. Safe and reliable materials selected according to the working conditions to meet customer needs.
Engineering Excellence: Materials and Structural Innovation
To achieve reliable performance in building plumbing, the material composition of a rubber seated gate valve is paramount. TWS Valve employs advanced metallurgy and polymer chemistry to manufacture valves that exceed standard operation expectations.
Ductile Iron Body (ASTM A536): The main valve body is cast from high-grade ductile iron, providing superior tensile strength and ductility compared to traditional grey cast iron. This allows the valve to handle thermal expansion, water hammer, and external stresses typical of commercial building risers.
EPDM Encapsulated Wedge: The core sealing element is the wedge, which is fully vulcanized with high-performance EPDM rubber. This encapsulation prevents the metallic core from coming into contact with the fluid, eliminating galvanic corrosion. The rubber formulation is engineered to resist degradation from chloramines and other water treatment chemicals.
Bolted Bonnet & Triple O-Ring Stem Seals: To prevent external leaks, the valve features a bolted bonnet design with a recessed gasket. The stem sealing system utilizes three independent O-rings, which can be replaced under full working pressure, significantly reducing downtime during maintenance cycles.
Why Choose Us & Our Certificates
TWS Valve's core products include all 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 type check valves, Dual plate check valves, and Y strainers.
We also continue to develop and diversify our product range based on global water management requirements. Our catalog features new products such as Balancing valves, Air releasing valves, and Backflow preventers. Furthermore, we design and produce high-performance Gearboxes with IP67 protection grades and electrical actuators to guarantee optimal matching with our valves.
Our certified quality standard: CE, ISO9001, ISO14001, WRAS, EN1074-1, ABS, CCS.
Cooperation Cases & Global Projects
TWS Valves are widely used in water treatment, water distribution, wastewater, dams, hydropower, power plants, and general industry. Due to our high quality, competitive pricing, and professional service, our products have been successfully deployed in major national projects and exported to Europe, North America, South America, Southeast Asia, Africa, and beyond. We are a trusted, long-term OEM/ODM partner for many world-famous valve brands.
Future Trends: Smart Valves & Sustainable Building Management
As the Internet of Things (IoT) integrates deeper into building automation systems, the humble gate valve is also undergoing a technological evolution. Smart building plumbing control systems now demand valves equipped with electronic feedback sensors that communicate valve position, pressure levels, and flow rates back to a centralized building management system (BMS).
By integrating actuators with smart telemetry, building operators can remotely isolate sections of a plumbing network the moment a leak is detected, minimizing water damage and conserving resources. TWS Valve is at the forefront of this trend, developing IP67-rated gearboxes and intelligent electric actuators that seamlessly bridge the gap between mechanical reliability and digital monitoring.
Moreover, sustainable manufacturing processes are shaping the future of valve production. Reducing carbon footprints through energy-efficient casting methods, using recycled metals, and adopting eco-friendly coating powders are key focus areas that TWS Valve actively implements across our Jinnan production bases.
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