Products News
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ISO Butterfly Valve Standard Overview
I. Why butterfly valve standards are important? The standard specifies the design of butterfly valves and the tests that each valve must pass. Without these standards, the security of the system cannot be guaranteed. Valves cannot be aligned, components cannot match, and the entire piping system ...Read more -
Stainless Steel vs. Duplex Stainless Steel
1. What is stainless steel? What is duplex stainless steel? Stainless steel is a general term for a type of corrosion-resistant steel, and its types are mainly classified based on the microstructure. Common ones include austenitic stainless steel (such as 304, 316) and ferritic stainless steel. D...Read more -
Common faults and troubleshooting methods of butterfly valves
As the core control component of the pipeline system, butterfly valves are widely used in water supply and drainage, HVAC, chemical industry and other fields. They are popular because of their compact structure and fast opening and closing. However, leakage, jamming, opening and closing failure a...Read more -
Epoxy spraying and Halar coating
I. What is epoxy spray coating? Epoxy spray coating is a two-component coating with epoxy resin as the main film-forming substance. It is applied to the metal surface by spraying or brushing to form a protective layer. It is characterized by strong adhesion and excellent resistance to cathodic pe...Read more -
Ductile Iron Valves vs. Cast Iron Valves
1. What is Ductile Iron? Ductile iron is a type of iron that has enhanced strength and flexibility compared to traditional cast iron. This is achieved by adding small amounts of elements like magnesium to the iron during the smelting process. The result is a material that can withstand higher str...Read more -
Valve seals: How to distinguish and select PTFE, EPDM, and PFA valve seats?
1: What is the most essential difference between PTFE, EPDM and PFA materials? PTFE (Polytetrafluoroethylene): Commonly known as the king of plastics, it is a white solid with excellent chemical inertness and temperature resistance (-196℃~+200℃). It has an extremely low friction coefficient, but ...Read more -
Frequently asked questions about pipeline air release valve
1. Why do pipelines need to be equipped with air release valve? When pipes are filled with water, run, or drained, air can accumulate inside them. If it is not discharged, “air blockage” will be formed, which will reduce the water cross-section and increase energy consumption. In seve...Read more -
How to Choose the Right Butterfly Valve for Water Treatment
Water treatment facilities are instrumental in providing clean and safe water for many different application. Butterfly valves are one of the most important components in a water treatment facility as they are utilized to control water flow and the amount of chemicals distributed. The selection o...Read more -
Protection Grade IP
1. What does an IP protection level mean? IP (Ingress Protection) protection level is the dustproof and waterproof capability classification of electrical equipment defined by the international standard IEC 60529. It consists of “IP” followed by two digits: the first digit represents ...Read more -
Soft seal and hard seal of gate valve
1. What are the soft seal and hard seal of gate valve? Soft-sealed gate valves use non-metallic elastic materials such as rubber and PTFE as seals, which are soft and hard in conjunction with the metal valve seat. They rely on the elastic deformation of the sealing material to fill the gap and ac...Read more -
What is the difference between imported valves and domestic valves?
The difference between domestic valves and imported valves is mainly reflected in the following aspects: 1. Materials and processes: Imported valves: usually selected raw materials, such as stainless steel (such as 316L), special alloys or engineering plastics. The casting process (such as pr...Read more -
TWS’s eccentric butterfly valve successfully joined the CE certification to accelerate its expansion into the European market
Recently, Tianjin Tanggu Water-Seal Valve Co., Ltd. announced that the company’s core product eccentric butterfly valve has successfully been added to the EU CE certificate. The continuation of this qualification not only marks that the product continues to comply with EU standards in terms of sa...Read more
