DN100 size butterfly valve

Main Features: For the structure of the triple-eccentricity seal butterfly valve, when the valve is under the complete open state, its butterfly plate sealing face will break away from the valve seat sealing face completely; when it is opened from 0 to 90°, the butterfly plate sealing face will...

Product Details

DN100 size butterfly valve

Overview

A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid. The valve may also be opened incrementally to throttle flow.


There are different kinds of butterfly valves, each adapted for different pressures and different usage. The zero-offset butterfly valve, which uses the flexibility of rubber, has the lowest pressure rating. The high-performance double offset butterfly valve, used in slightly higher-pressure systems, is offset from the centre line of the disc seat and body seal (offset one), and the centre line of the bore (offset two). This creates a cam action during operation to lift the seat out of the seal resulting in less friction than is created in the zero offset design and decreases its tendency to wear. The valve best suited for high-pressure systems is the triple offset butterfly valve. In this valve the disc seat contact axis is offset, which acts to virtually eliminate sliding contact between disc and seat. In the case of triple offset valves the seat is made of metal so that it can be machined such as to achieve a bubble tight shut-off when in contact with the disc.


Products Range

Top flange: ISO 5211

Size: 2" - 48" or  DN50 - DN1200

Suitable Temperature: -26℃ - 82

Pressure Rating: ANSI class 125 - class 300 or PN2.5­ - PN40

Operation Type: Lever, Gear, Electric, Pneumatic, Hydraulic

Seal Material: EPDM, NBR, PTFE,RPTFE, VITON, etc

Body Materials: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel

(G25,GGG40,GGG50,WCB, LCB, 20GL,LC1,LCC,CF8, CF8M, CF3, CF3M, SS 2205 etc)


Our company is specialized in manufacturing and various valves . To guarantee good quality, we follow ISO9001 standards to inspect our goods. From raw material purchase to pre-shipment inspection, we keep an eye on every step to ensure the satisfaction of our customer on quality.

If you have any  questions, please feel free to contact me.your enquiry  will get prompt attention.

we will do out best  to quote you a more competitive price and short delivery time .



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