■ Overview

The ZDR/LWd electric low load regulating butterfly valve consists of an electronic electric actuator and a low load butterfly valve.

The valve body is made of welded steel plates and is divided into two types according to the valve body structure: open type and rear seat type. The open type has a valve seat free structure, resulting in a large leakage rate. The rear seat type adds a valve seat on the basis of the open type structure, which greatly improves its leakage rate compared to the open type.

Mainly suitable for flow and pressure control of low-pressure media. It has the characteristics of simple structure, easy operation, and light weight.

■ Valve body

Type: Flat cast valve body

Nominal diameter: 100-1400mm

Nominal pressure: PN0.6MPa

Flange standard: JB/T79.1-94、 79.2-94, etc

Materials: cast steel, cast stainless steel

Upper valve cover: standard type: integrated with the valve body (below DN600); External Undertaking Type (DN600 or above)

Cover type: bolt compression type

Packing: Graphite packing

Operating temperature: Cast steel valve body: -20 to+425 ℃; Cast stainless steel valve body:- 45～+500℃

■ Valve components

Valve core type: center rotating type (open type, rear seat type)

Butterfly plate material: cast steel, stainless steel

Traffic characteristics: Approximately equal percentage

Rated travel: fully open 60 ° or 90 °

■ Executing Agency

Type: 3810R, PSQ, CH, HQ electronic electric actuator

Input signal: 4-20mA or 1-5V · DC

Power supply voltage: 220V/50Hz

Environmental temperature:- 25～+70℃

■ Valve action type

Electric close type (B), electric open type (K)

■ Structural images