1. ISO 9001 quality system certification
2. ISO 14001 Environmental Management System Certification
3.OHSAS18000 Occupational Health and Safety Management System Certification
4.EU CE certification...
Leading Intelligence, Shaping Water Future—TWS VALVE Shines at 2023~2024 International Valve & Water Technology Expo
From 15th to 18th, Nov., 2023, Tianjin Tanggu Water-seal valve Co.,ltd made ...
Electric butterfly valves are a type of electric valve and electric control valve. The main connection methods of electric butterfly valves are: flange type and wafer type; the main sealing forms o...
1. The stomata
This is a small cavity formed by the gas that the metal solidification process does not escape inside the metal. Its inner wall is smooth and contains gas, which has a high reflectiv...
TWS Valve mainly produce rubber seated butterfly valve, such as wafer butterfly valve, lug butterfly valve, flange butterfly valve. Besides, gate valves, check valves and ball valves are also their...
Sealing is to prevent leakage, and the principle of valve sealing is also studied from leakage prevention. There are many factors that affect the sealing performance of butterfly valves, mainly inc...
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