High Torque Electric Butterfly Valve Modulatig On Off Wafer Style DN50

Electric Butterfly Valve Actuated Wafer type butterfly valves,Control style On-Off, DN50 DN65 DN80 black

OVERVIEW

Actuated Butterfly Control Valves, control the flow of gas or liquid by means of a disk, which turns on a diametrical axis inside a pipe or by two semicircular plates hinged on a common spindle, which permits flow in only one direction. These valves offer a rotary stem movement of 90 degrees or less, in a compact design. Unlike ball valves, they do not have any pockets in which fluids may become trapped when the valve is closed. They are quick opening valves that consist of a metal circular disc or vane with its pivot axes at right angles to the direction of flow in the pipe, which when rotated on a shaft, seals against seats in the valve body. They are normally used as throttling valves to control flow.

AWWA Standards are vital guidelines for all facets of the drinking water community. They provide the minimum requirements for design, installation, performance, and manufacturing of products used in the water industry, including pipe, chemicals, storage facilities, valves, and other appurtenances.

From a family of valves called quarter-turn valves, 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, each adapted for different pressures and different usage.

FEATURES

• Wide size range (DN 50…DN600)
• For On-Off or Modulating Control
• The handwheel assembly manual adjustment
• Irreversible worm gear.
• Visual mechanical position indicator for accurate visual reference of valve position.
• Anti-condensation heater and 2 aux. limit switches on standard model
• Enclosure IP67

SPECIFICATIONS:

Table (1) Control Type and Valve Size Data

The below table is based on differential pressure of 10 bar.

Figure (1) Product Identification System

The labeling system is as follows:

Table (2) Valve Dimensions (mm) and Weight

Table (3a)Actuator Dimensions (mm)

With Modulating Card D=185

No mechanical stops

Table (b) Actuator Dimensions(mm)

Table (c) Actuator Dimensions(mm)

AK-O7 to AK-O12