Ductile Flat Gate Valve

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Technical Specification
Product name	Ductile 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	Ductile flat
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 Ductile flat gate valve meet your needs and do better.
• Check raw materials before production at Ductile flat gate valve.
• Spot checks are carried out during the processing of Ductile flat gate valve.
• 100% inspection of Ductile flat gate valve before shipment.
• Provide a one-year service for the products provided by Ductile 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: Can ductile iron pipes be welded?

A: I'm ready, It should be used more in some high-strength cast iron equipment, under normal circumstances, the tensile strength of ductile iron is high, in the weldability is also worse than the welding of gray cast iron, we in the cast iron equipment repair is actually difficult to identify with the naked eye is ductile cast iron or gray cast iron, we usually use a wide range of W E777 special cast iron welding rod, but only for maintenance and maintenance use, the effect is really good, reduce the risk of crack resistance and the high strength of the welding rod to ensure the strength of the welding joint itself.

 

Q: What is the difference between ductile iron and gray iron?

A:

1. Although the manufacturing cost of ductile iron is higher than that of gray cast iron, it has much higher strength and toughness than gray cast iron, and it has become a casting material of choice compared with cast steel.

 

2. The tensile strength of ductile iron is higher than that of gray cast iron and cast steel, such as using appropriate heat treatment, it can reach the level of forged carbon steel. And the same composition of ductile iron as long as the use of different heat treatment processes, its tensile strength can be changed in a wide range (400-1500MPa).

 

3. Under the same tensile strength conditions, the yield strength of cast iron in the ball is higher than that of steel, which is a very valuable performance of ductile iron as a structural material, and one of the reasons why it is increasingly widely used as an important part of mechanical and electrical products.

 

4. The elongation of ductile iron is not as good as that of cast steel; However, it is better than gray cast iron, and can meet the general requirements of most mechanical and electrical parts at work, because most mechanical and electrical parts are only allowed to have minimal plastic deformation at work according to the yield strength 0.2, and the elongation should be less than 0.2%)

 

5. The elastic modulus of ductile iron is higher than that of gray iron, which indicates that its rigidity is greater than that of gray iron, but slightly lower than that of cast steel.

 

Although the impact toughness of ductile iron is not as good as that of cast steel, it is much higher than that of gray iron, which can meet the requirements of working parts under dynamic load in general.

 

Q: How to choose the right valve drive device?

A: The valve drive device is a device used to operate and connect with the valve. The device can be driven by a power source in the form of electricity, air pressure, hydraulic pressure or their combination, and its motion process can be controlled by the stroke, torque or axial thrust.

The operating characteristics and utilization rate of the valve drive device depend on the type of valve, the working specification of the device, and the position of the valve on the pipeline or equipment. Therefore, the correct selection of the valve drive device is closely related to the valve type and technical parameters.

 

Q: What is the basis for selecting the correct valve drive device?

A: The general principle of correct selection of the valve drive device is that the operating characteristics of the drive device are required to be consistent with the operating characteristics of the valve. General or no automatic control of the valve, optional manual drive device; For valves that need to be opened and closed quickly, pneumatic or gas-hydraulic linkage driving devices are selected; Need automatic control or remote control valve, optional electric drive device; In the flammable and explosive pipeline, if the electric device is selected, explosion-proof electric drive device should be selected.

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