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Flanged Ruber Lined Butterfly Valve

Rubber lined butterfly valves are a type of valve which can be used for isolating or regulating flow.

The closing mechanism is the disc which sits in the center of the valve body. The disc is connected to a handle or actuator via the shaft which passes from the disc through the top of the valve body.

Unlike a ball valve, the disc of the butterfly valve is always present in the flow, which will induce the pressure drop.

Compared with the ball valve, a butterfly valve can be shut off quickly but requires less support due to its lighter weight.

Rubber lined butterfly valves operate in a quarter turn, meaning that rotating the closed disc 90°will fully open the valve, and vice versa. They can also be opened incrementally in order to throttle flow.

This can be accomplished manually, but throttling flow will be more precise when an actuator is used cooperatively.

Actuators can be customized to allow incremental flow, by using positioners in the case of pneumatic and hydraulic actuators, or by using modulating boards in the case of electric actuators.



Product Introduction

The lined butterfly valve has simple structure, light weight, good sealing performance and long service life. It is usually used foron-off conditions and can also be used for regulate. It is widely used in various corrosive occasions such as acids, alkalis, and salts. Among them, the butterfly valve specially developed for desulfurization and denitration in the thermal power industry adopts a pinless structure with a bottom rotation, the center position of the valve plate is more accurate, and the sealing performance is better; the valve plate is made of 2507 or 1.4529 material, which has greatly improved corrosion resistance as well as anti-abrasion performance.

Product Advantages

Wafer&Flange connection, simple structure, compact, light weight, can be installed in any position.

Pinless connection, zero leakage.

Small flow resistance coefficient, large circulation capacity, good regulating.

Axial thrust bearing or lubricated bronze to prevent overload of valve stem.

Valve body: Cast iron, nodular cast iron, carbon steel, 304/304L/316/316L

Valve seat: NBR/EPDM/PTFE/VITON special rubber of desulfurization

Valve trim: 2507 dual phase steel/1.4529 dual phase steel/Dl/WCB/CF8/CF8M/C954

Valve stem: 2Cr13/304/420/316

Actuator: Electric actuator

Type: Part-turn

Voltage: 110, 200, 220, 240, 380, 400, 415, 440, 480, 500, 550, 660, 690

Control type: on-off

Series: intelligent

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