Electric Wafer Butterfly Valve
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Electric Wafer Butterfly Valve

Size: DN25--DN1200
Working pressure: PN6/PN10/PN16/PN25(150Lb/300Lb/600Lb)
Working temperature: -20℃---120℃
Stem material: Stainless steel SS304(CF8)、SS316(CF8M)、SS316L(CF3M).
Body material: WCB、Cast steel、Ductile iron、SS304(CF8)、SS316(CF8M)、SS316L(CF3M).
Disc material: Ductile iron、Duplex stainless steel、stainless steel SS304(CF8)、SS316(CF8M)、
Seat material: NBR,EPDM,Viton,Silicon rubber,Teflon,
Application: Widely used in cement industry、concrete、dry powder etc.
Suitable medium: Fresh water、Sewage、Seawater、Weak acid and Steam etc.
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"Electric wafer butterfly valve"means a soft seated butterfly valve with an electric actuator. It is used for on-off control of water and other media compatible with the materials of construction.They rotate 90 degrees (quarter-turn) from fully open to fully closed. While they typically operate more slowly than valves with a pneumatic actuator, it is often the case that electricity is available and compressed air is not.


wafer style valve sandwich mounts between customer supplied standard ANSI/ASME Class 125/ 150 pipe flanges. Standard unit is power-to-open and power to close, stays in last known position with loss of power. On receipt of a continuous voltage signal, the motor runs and via an all metal self-locking gear drive rotates the disc one quarter turn. The motor is automatically stopped by internal cams striking limit switches at both open and closed positions. On receipt of a reversing continuous signal, the motor turns in the opposite direction reversing the valve position.

 

The valve is direct mounted to the actuator using the international standard ISO5211 mounting pad. Rugged unique integral motor/housing design provides higher torque in a very small package. Special wave line seat and disc shape, reduces the required torque and extends the life of the valve. Precision machined metal disc with two-piece stem (shaft) construction, enhances the flow capacity of the valve and reduces turbulence. The stem utilizes PTFE/graphite bearings with V-ring seals preventing leakage.


Actuators with anti-condensation heater is standard and will help protect actuator against damage caused by condensation. Two auxiliary limit switches are supplied to confirm valve open and closed position.


Butterfly Valve Standard Features

·  Rugged ductile iron body with 3-layer epoxy/epoxy/PUR protective coating

·  Precision machined Stainless Steel disc

·  Unique wave line seat design reduces the torque and extends the seal life

·  PTFE/graphite stem bearings with V-ring seals

·  Two piece stem/disc construction enhances flow and reduces turbulence

·  Standard ISO5211 actuator to valve direct mounting

·  Leak proof flange seals included as part of valve seat


Electric Actuator Standard Features

· Quarter turn operation with mechanical limits

· Rugged Type weatherproof aluminum alloy housing

· Visual valve position indicator

· Manual override

· Heavy duty motor with overload protection

· Thermostatically controlled anti-condensation heater

· Two auxiliary limit switches to confirm valve position

· Self-locking all metal gear drive, no additional brake required

· CE mark





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  Tel: +86-189-0515-4687
  WhatsApp: +86-180-6165-9285
  E-mail: info@slv-cn.com
  Address: No.22, Liuzhou North Road, Pukou District, Nanjing, Jiangsu, China

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