News
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Polypropylene (PP) material: Why is it suitable for automatic air release?
1. Why is polypropylene (PP) material chosen for valve floats? The selection of polypropylene (PP) is mainly based on comprehensive considerations of its dimensional stability, corrosion resistance and hygienic safety in hot water environments. In HVAC, domestic hot water and industrial heat reco...Read more -
17-4PH · F51 · 431 · 420 | Full analysis of four stainless steel valve shaft material selections
1. What categories do these four types of stainless steel belong to? What’s the core difference? 17-4PH is a martensitic precipitation hardening stainless steel. Its unique feature is that through solid solution treatment followed by aging heat treatment, nanoscale copper-rich phases and ca...Read more -
Electric Actuator & Valve Matching Guide
What Is an Electric Actuator? An electric actuator is a self-contained electromechanical assembly that converts electrical energy into controlled motion—rotary or linear—to operate a valve. It comprises an electric motor, a gear reduction train, a control module, and an output interface that coup...Read more -
Coal Chemical Projects Are Intensively Promoted, & The Valve Industry Is Ushering In A New Round Of Demand Window
Since 2026, a number of large-scale coal chemical projects have entered the preliminary preparation or substantial advancement stage, from coal-to-liquids and green electric coking projects in Inner Mongolia, to coal-to-clean fuel upgrade demonstration projects in Yulin, Shaanxi, to petrochemical...Read more -
TWS appear at WETEX in Dubai to jointly explore new opportunities in the Middle East market
The 28th Middle East Dubai Energy, Environmental Protection and Water Treatment Exhibition (WETEX) in 2026 will be held at the Dubai World Trade Center from October 20th to 22nd. The exhibition covers an area of nearly 80,000 square meters and will attract 3,500 exhibitors from 60 countries. The ...Read more -
What are the WRAS certification standards?
1. What exactly is WRAS certification? What does it have to do with drinking water safety? WRAS is the abbreviation of “Water Regulations Advisory Scheme”. It is managed by the British Water Center and is the authoritative certification system in the field of drinking water safety in ...Read more -
Valve Selection For Water Treatment Systems
Water Treatment Valves are essential flow-control components used in water supply plants, wastewater treatment facilities, pumping stations, filtration systems, desalination plants, and water-reuse projects. These valves regulate water flow, isolate equipment, prevent reverse flow, control pressu...Read more -
Breaking through the limits of anti-corrosion: How does IM3 spray technology redefine valve life?
1. What is IM3 corrosive environment? IM3 is one of the submerged or buried corrosive categories defined in the ISO 12944-2 standard, specifically referring to wet soil environments. This type of environment is common in buried storage tanks, steel piles, underground pipelines and other steel str...Read more -
TWS National Day Greetings
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TWS wishes everyone a happy Mid-Autumn Festival
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Butterfly Valve vs Gate Valve Selection
In the realm of fluid control, the selection between butterfly and gate valves is a critical decision that impacts system performance, cost-effectiveness, and long-term reliability. While both valve types serve the fundamental purpose of regulating flow, their design principles, operating charact...Read more -
Rising Stem Gate Valve & Non-Rising Stem Gate Valve
1. What is the rising stem gate valve? The stem nut of the rising stem gate valve is fixed on the valve cover or bracket. When opening and closing, the valve stem rotates and lifts, and the threaded part is always exposed to the outside. As the gate rises and falls, the valve opening can be visua...Read more
