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STVVALVE

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Entries by STVVALVE

What is a backseat of Gate Valve

June 9, 2022 in , /by

What is a backseat?A backseat is a seating arrangement inside the bonnet. It provides a seal between the stem and bonnet and prevents system pressure from building against the valve packing when the valve is fully open. Back seats are often applied in gate and globe valves (source: wermac.org). How to use the backseat? The backseat should only be used to isolate the gland packing from the line medium for example when gland packing leakage is evident and until the valve can be de-pressurised and repaired. How to not use the backseat? Under no circumstances should the  backseat be used to allow gland packing […]

What is a Y strainer?

March 24, 2022 in /by

                                          There are styles of strainers, basket and y. The y strainer is generally used wherein there’s a small quantity of cloth to be amassed. This strainer may be established inside the horizontal or vertical […]

What’s The Difference Between Carbon Steel And Cast Iron?

March 24, 2022 in /by

What’s The Difference Between Carbon Steel And Cast Iron? Carbon steel is an iron – carbon alloy with a carbon content of 0.0218% to 2.11%. Cast iron generally has a carbon content of 2.5% to 3.5%. Carbon steel castings has relatively good strength and toughness and is used to manufacture various mechanical parts and metal […]

Ball Valves

January 28, 2022 in /by

Ball Valves Introduction This article contains all the information you need to know about Ball Valves. Read further and learn more about: What is a ball valve and how does it work? Parts of a ball valve Types of ball valves Materials of construction of ball valves Advantages and limitations of ball valves And much […]

Which is better gate valve or ball valve

December 1, 2021 in /by

                    In real life, there are many valve products, but the most common valves are ball valves and gate valves, which are also used the most. However, for people who buy ball valves and gate valves, we will know what kind of use and function they […]

How to install the Stainless steel sight glass?

November 29, 2021 in /by

Flange sight glass and wafer  sight glass I think that is to say this kind of commodity. The standard name of the Ministry of chemical industry is high-pressure vessel flange sight glass. Due to the structure, that is, a whole piece of laminated glass is sandwiched between the two tablet flanges, which is called tablet […]

What is the different Globe and Gate valves

November 29, 2021 in /by

                  Globe valve, gate valve, butterfly valve, check valve and ball valve are indispensable control components in various pipeline systems. Each valve is different in appearance, structure and even functional use. However, the globe valve and gate valve have some similarities in appearance, and both have the […]

what’s the Check valve opening pressure?

November 15, 2021 in /by

Check valve refers to the valve that automatically opens and closes the valve disc depending on the flow of the medium itself to prevent the backflow of the medium, also known as check valve, one-way valve, reverse flow valve and back pressure valve. The check valve belongs to an automatic valve, which is mainly used […]

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