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Technical Specification
Product name	Double plate flat gate valve without diversion hole
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
Closure type	Double ram without diversion hole
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. The use of no diversion hole double ram structure, with compensation structure, two RAMS can support each other when closed, to avoid the medium pressure is low, the sealing force of the metal surface is not enough to achieve satisfactory sealing, so as to achieve a good sealing effect.

2. The two RAMS can support each other when opening and closing. When opening, due to the existence of compensation gap, the friction of the ram and seal is reduced, thus reducing the opening and closing torque, making the operation more light and convenient.

3. The flexible sealing ring is used to seal the valve seat, and the floating valve seat structure with preload force is applied, so that the opening and closing torque of the valve is only 1/2 of that of the ordinary valve, and the valve can be easily opened and closed.

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

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

6. The valve is suitable for various media, including water, oil, gas, etc., widely used in petroleum, chemical industry, metallurgy, electric power and other industries.

 

 

• 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 Double plate flat gate valve without diversion hole meet your needs and do better.


• Check raw materials before production at Double plate flat gate valve without diversion hole.


• Spot checks are carried out during the processing of Double plate flat gate valve without diversion hole.


• 100% inspection of Double plate flat gate valve without diversion hole before shipment.


• Provide a one-year service for the products provided by Double plate flat gate valve without diversion hole 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: What are the main features and uses of gate valves?

A: Features: can be applied to various parameters of the working conditions, while the gate valve also has a small flow resistance, less effort to open and close, the flow of the medium is not restricted, with the advantages of the upper seal structure favorable packing prosperity protection. Main way: used to cut off the medium in the pipeline.

 

Q: The definition and concept of the nominal size of the valve?

A: It is the dimensional identification of a combination of letters and numbers for pipe system components, which consists of the letters DN followed by a dimensionless integer number.

 

Q: What is the definition and concept of nominal pressure of valve?

A: It is a reference letter and number combination identification related to the mechanical properties and dimensional characteristics of the piping system elements, consisting of the letter DN followed by a dimensionless frequency.

 

Q: Valve pressure-temperature rating concept?

A: The concept of valve pressure-temperature rating is the nominal pressure of the valve and the valve material (pressure part) under the premise of determining, the maximum non-impact allowable working pressure of the valve expressed by the gauge pressure at the specified temperature.

 

Q: The main connection form and characteristics of the valve?

A: A flange connection: the valve body has a flange, and the pipe flange is bolted; b Clamp connection: valve body without flange, pipe flange between the bolt connection; c threaded connection: the valve body has internal or external threads, and the pipe is connected with threads; d Welded connection: the valve body has a welded groove and is connected with the pipeline through welding; e clamp connection: the valve body is equipped with a clamp, and the pipe is connected with a clamp; f bushing connection: The bushing connection with the pipeline is adopted.

 

Q: What are the main sealing surface forms and characteristics of flanged valves?

A: Plane FF, convex RF, concave MF, mortise TG, ring connection RJ, are all forced seals with gaskets (rings).

 

Q: What are the main commonly used valve body materials?

A: The commonly used body materials are mainly gray cast iron, malleable cast iron, ductile cast iron, copper alloy, carbon steel, high temperature steel, low temperature steel, stainless acid-resistant steel.

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