Stainless Steel Flat Gate Valve

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Technical Specification
Product name	Stainless steel flat gate valve
Design reference	API	ASME
Design standard	API 6D	ASME B16.34
Structural length	API 6D	ASME B16.10
Flanged ends	ASME B16.5、ASME B16.47	ASME B16.5、ASME B16.47
Butt-welding ends	ASME B 16.25	ASME B 16.25
Test & inspection	API 6D	API598
Packing:	To be packed in suitable wooden cases as per client's option or customized
Shipping & Delivery:	20-25 days lead time; deliver by ship from Ningbo port or Shanghai port
Carbon steel	Stainless steel
Notes: Serial valve connecting flange and butt-welding terminal size can be designed at customers'request. The material of the main parts and sealing surface of the valve can be designed and selected according to the actual working conditions or the special requirements of users.

 

 

1. It has the advantages of simple and compact structure, reasonable design, reliable sealing, light and flexible operation, small size, smooth channel, low resistance, easy installation and easy disassembly.

2. When the valve is fully opened, the flow resistance coefficient is very small, and the valve will eliminate the function of the valve disc and the dirt on the sealing surface every time the valve is opened and closed.

3. The packing is made of flexible graphite ring and graphite packing, reliable sealing, light and flexible operation.

4. It is widely used in oil and water steam pipelines such as petrochemical industry and thermal power plants to connect or cut off the intermediate quality of pipelines. The sealing surface of the opening and closing device has compact structure and reasonable design.

 

 

• Our service tenet is customer first, service first. We will provide more accurate and efficient manufacturing and service according to customer requirements.
• We have a professional QC team to ensure that the products in Stainless steel flat gate valve meet your needs and do better.
• Check raw materials before production at Stainless steel flat gate valve.
• Spot checks are carried out during the processing of Stainless steel flat gate valve.
• 100% inspection of Stainless steel flat gate valve before shipment.
• Provide a one-year service for the products provided by Stainless steel flat gate valve to create value for customers.

 

 

• We have complete production technology and management.
• As a manufacturer our price is also good.

 

 

To be packed in suitable wooden cases as per client's

 

 

Q: Classification of flat gate valves?

A: Plate gate valve can be divided into guided plate gate valve, no deflector plate gate valve, high pressure water injection plate gate valve, gas plate gate valve, flange plate gate valve, welded plate gate valve, clamp plate gate valve, single plate plate gate valve and double plate plate gate valve.

Now the use of plate gate valve is more and more widespread, many pipelines are using plate gate valve to replace the ordinary wedge gate valve.

 

Q: What is the difference between carbon steel and stainless steel?

A: 1. The appearance is different

Stainless steel is composed of chromium, nickel and other metals, so the appearance of stainless steel belongs to silver bright color, smooth appearance, but also has a very good luster. Carbon steel composition is carbon and iron alloy, so the color of carbon steel is gray, the surface is more rough than stainless steel.

 

2. Corrosion resistance is different

Carbon steel and stainless steel contain iron, and it is known that iron itself will slowly oxidize when exposed to the environment, resulting in surface rust. However, stainless steel adds chromium, which is more combined with oxygen than iron, as long as chromium on oxygen, it will form a chromium oxide layer, which can directly protect the steel from degradation and corrosion. The chromium content of carbon steel will also be lower, so a small amount of chromium can not form a chromium oxide layer, so the corrosion resistance of stainless steel will be better than that of carbon steel.

 

3. Wear resistance is different

Carbon steel will be harder than stainless steel, but it will be heavier and less plastic. Therefore, in terms of wear resistance, its carbon steel is far more wear-resistant than stainless steel.

 

4. Different ductility

The ductility of stainless steel will be better than that of carbon steel, mainly because the nickel content of stainless steel is relatively high, and the ductility of these elements is also better, so the ductility of stainless steel will be better. Carbon steel contains little nickel and can be directly ignored, but the ductility is poor.

 

Q: How many types of brackets are available? How many section types are there?

A: According to the different installation methods of the valve stem nut and the support, the support can be divided into the following three types.

① Valve stem nut bracket, mainly used for handwheel operated valves.

② Column beam bracket, mainly used for small diameter valves or low pressure valves.

③ The flange connecting bracket is mainly used to install large diameter valves with various control mechanisms.

 

Q: What is the effect of the rigidity and structural characteristics of the closure on the sealing performance?

A: The rigidity and structural impact of the closure is due to the elastic action of the part. Because the closing part of the closed-circuit valve is not absolutely rigid, but has a certain elasticity, under the pressure related to the medium, the size is changed, which also causes the interaction of the sealing surface force to change. In order to compensate for the effect of these changes on the sealing of the closure, it is best to make the sealing surface have small rigidity, that is, the elastic deformation is as large as possible.

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