National standard clamp-on multi-level hard-sealed butterfly valve

Product Overview:

Butterfly valve is a simple structure and compact valve equipment, which is widely used in the field of fluid control. At its heart is a disc-shaped butterfly plate that rotates 90 degrees to switch the fluid on and off and regulate the flow rate. The butterfly valve has the advantages of light weight, fast opening and closing, small flow resistance, etc., and is especially suitable for large flow and low pressure difference occasions. Depending on the form of seal, butterfly valves can be divided into soft seals (rubber or polymer seals) and metal seals (suitable for high temperatures or corrosive media). Common connection styles include clamp, flange and welded to meet different installation needs. Butterfly valves are widely used in water supply and drainage, HVAC, chemical, electric power and other industries, especially in the occasions that require rapid opening and closing or frequent operation. With the advancement of materials and manufacturing technology, modern butterfly valves have been continuously improved in terms of corrosion resistance, sealing performance and intelligence, which can adapt to more severe working conditions while improving the reliability and operational efficiency of the system.

Specifications:

> size range: 1/2"-56" (DN15~DN1400)

> Pressure Rating: ASME 150~1500LB(PN16-PN250)

> temperature range: -46°C~538°C

> connection methods: flange, welding, threading, etc

> main material: carbon steel, stainless steel, duplex steel, alloy steel, etc

> sealing surface hardening treatment: surfacing welding Stellite alloy and nickel-based alloy, spraying WC

> operation mode: manual, electric, pneumatic, hydraulic, pneumatic, electro-hydraulic, etc

Product Standards:

1. Design standard: JB/T8527

2. Structural length: GB/T 12221

3. Connecting flange: GB/T9124

4. Test and inspection: GB/T 13927

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Product Details

Features:

1. The butterfly valve is suitable for pipelines under various working conditions such as petroleum and chemical industry with a nominal pressure of 1.0~25.0MPa (Class150-1500) and a working temperature of ≤538°C, and is used to cut off or connect the pipeline medium.

2. The structure is simple, the overall size is small, the structure length is short, the volume is small, the weight is light, and it is suitable for large-diameter valves.

3. When fully opened, the effective flow area of the valve seat channel is large, and the fluid resistance is small.

4. It is convenient and fast to open and close, and has good adjustment performance.

5. The opening and closing torque is small, because the butterfly plates on both sides of the rotating shaft are basically equal by the medium, and the direction of the torque is opposite, so the opening and closing are more labor-saving.

6. The sealing surface material of the midline butterfly valve is generally made of rubber and plastic, so the low-pressure sealing performance is good, and the three-eccentric sealing surface is multi-level or hardfacing cemented carbide to achieve high pressure and two-way pressure demand.

The national standard clamp-on multi-level hard seal butterfly valve .jpg