News
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Pressure test method for industrial valves.
Before the valve is installed, the valve strength test and valve sealing test should be performed on the valve hydraulic test bench. 20% of low-pressure valves should be inspected randomly, and 100% should be inspected if they are unqualified; 100% of medium and high-pressure valves shou...Read more -
Wastewater Treatment Plant struggling in 3 vicious circles.
As a pollution control enterprise, the most important task of a sewage treatment plant is to ensure that the effluent meets the standards. However, with the increasingly strict discharge standards and the aggressiveness of environmental protection inspectors, it has brought great operational pres...Read more -
Certificates required for valve industry.
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, pressure vessel PED directive 5.CU-TR Customs Union 6.API （American Petroleum Institute）Certific...Read more -
TWS Valve ‘s work back to normal,Any new order, contact us freely,Thanks!
Dear Friends, We are Tianjin Tanggu Water-Seal Valve Co.,Ltd,this week we begin to work from China New Year,and all work back to normal. Our company mainly produce rubber seated butterfly valve,soft seated gate valve,check valve,Y strainer,backflow preventer,we have CE ,...Read more -
How to Select Valve Body for Rubber Seated Butterfly Valve
You’ll find the valve body between the pipe flanges as it holds the valve components in place. The valve body material is metal and made from either carbon steel, stainless steel, titanium alloy, nickel alloy, or aluminum bronze. All but carbon stell are appropriate for corrosive environments. Th...Read more -
General Service Vs High-Performance Butterfly Valves: What’s the Difference?
General Service Butterfly Valves This type of butterfly valve is the all-around standard for general processing applications. You can use them for applications involving air, steam, water and other chemically inactive fluids or gases. General service butterfly valves open and close with a 10-posi...Read more -
Comparison of gate valve and butterfly valve
Gate Valve Advantages 1.They can provide an unobstructed flow in the fully open position so pressure loss is minimal. 2.They are bi-directional and allow uniform linear flows. 3.No residues are left in the pipes. 4.Gate valves can withstand higher pressures compared to butterfly valves 5.It preve...Read more -
Stainless Steel World Conference & Exhibition rescheduled to 2022
Stainless Steel World Conference & Exhibition rescheduled to 2022 By Stainless Steel World Publisher - November 16, 2021 In response to the increased Covid-19 measures introduced by the Dutch government on Friday, November 12, Stainless Steel World Conference & Exhibition has be...Read more -
How to Install a Butterfly Valves.
Clean the pipeline of all contaminants. Determine the direction of the fluid, torque as flow into the disc may generate higher torque than flow into the shaft side of the disc Position disk in the closed position during installation to prevent damage of disc sealing edge If possible, at all time...Read more -
Butterfly valves: Difference between Wafer and Lug
Wafer type + Lighter + Cheaper + Easy installation - Pipe flanges required - More difficult to centre - Not suitable as end valve In the case of a Wafer-style butterfly valve, the body is annular with a few non-tapped centring holes. Some Wafer types have two while others have four. The flange ...Read more -
Butterfly Valves: What to Know Before Making Your Purchase.
When it comes to the world of commercial butterfly valves, not all devices are created equal. There are many differences between the manufacturing processes and devices themselves that change the specifications and capabilities significantly. To properly prepare for making a selection, a buyer mu...Read more -
Why Use Butterfly Valves in Your Application?
Choosing butterfly valves over any other type of control valves, such as ball valves, pinch valves, angle body valves, globe valves, angle seat piston valves, and angle body valves, has several benefits. 1.Butterfly valves are easy and fast to open. A 90° rotation of the handle pro...Read more
