Full Bore Slab Gate Valve

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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 Full Bore Slab Gate Valve meet your needs and do better.
• Check raw materials before production at Full Bore Slab Gate Valve.
• Spot checks are carried out during the processing of Full Bore Slab Gate Valve.
• 100% inspection of Full Bore Slab Gate Valve before shipment.
• Provide a one-year service for the products provided by Full Bore Slab 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: What is the difference and choice between full diameter and reduced diameter?

A: The diameter (or diameter), is the common caliber of various pipes and pipeline accessories, it is not the actual outside diameter or inside diameter of the pipeline, although its value is closer to or equal to the inside diameter of the pipeline.

A reduced gate valve is a valve with a closed element for flow control. The flow area of the opening that closes the element is less than the area of the inner diameter of the pipeline. The main purpose of the reducing gate valve is to control the flow rate by reducing the flow or by intercepting the flow, which is equal to adjusting the closing element so that the valve provides different flow rates at a certain opening.

The biggest difference between full diameter and reduced diameter is that the full diameter is an equal width flow channel, and its size can not be less than the value specified in the standard, which is probably equivalent to the nominal diameter of the specification, such as DN50 full diameter gate valve flow channel diameter of about 50mm; The reduced flow channel entrance is wider than the flow channel diameter, and the actual flow channel diameter is about one specification smaller than the specification, such as DN50 reduced gate valve flow to the diameter of about 38, roughly equivalent to the specification of DN40.

Q: What is the heat treatment of steel? What are the types of heat treatment?

A: The properties of steel depend not only on the chemical composition, but also on the metallographic structure. Heat treatment is the process method by which different metal structures are obtained through heating, holding and cooling to obtain the required properties.

Common heat treatments are normalizing, quenching, tempering and annealing.

Normalizing: Heat the steel to AC. Line with. 30℃~50℃, after heat preservation, cool in the air.

Quenching treatment: The steel is heated to AC. 30℃~50℃ above the line, after heat preservation, rapid (water or oil) cooling, so that it gets high strength and hardness.

Tempering treatment: The steel is heated to below AC, and after holding, it is cooled down (cooled in air).

Quenching (Q) and normalizing (N) is to improve the strength of steel, after quenching or normalizing, through tempering (T) to eliminate stress, improve the organization, improve toughness. Quenching and tempering is also known as tempering (QT) treatment.

Annealing: The steel is heated to AC. Or AC line above 30℃ ~ 50℃, after insulation, slow (usually with the furnace) cooling. Usually annealing is used to remove residual stress or cold hardening.

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