Hydraulic Drive · Counter Weight · PLC Control

Energy-Saving Hydraulic Control Butterfly Valves for Hydropower and Water Projects

PN6~PN25, sizes 12″ to 192″ (DN300~4800mm), available in cast iron, ductile iron, and carbon steel with automatic pressure sustaining and dual protection.

Overview

Hydraulic control butterfly valve with counter weight is opened by hydraulic drive and closed by potential energy of counter weight. It is used to substitute to gate valve and check valve, and is given low fluid resistance coefficient, making it an energy-saving product. It is closed by quick and slow stages, firstly quick close and then slow close. According to different working conditions, the time and angle of quick and slow close may be adjusted. Hydraulic system is provided with automatic pressure sustaining and automatic reset functions upon opening, performed as dual protection for valve opening. Electrical control may be ordinary control and PLC control responding to customer’s requests to carry out the in-line action between pump and valve, or spot remote control and computer integrated control.

When the hydraulic control butterfly valve is cancelled with the counter weight, can be changed into energy storage type flow control valve. Flowspec Luokai can produce the hydraulic control butterfly valve with sizes of DN300~4800mm and nominal pressure of PN16~25bar. Welcome to contact us for detailed information and best quotes if you have any questions or inquiries.

1. Features

Quick close and slow closing
Automatic control
Electrical control
PLC control
Must valve for water turbine in hydropower station

2. Technical Specifications

PN6 / PN10 / PN16 / PN25
Size: 12″ ~ 192″ (DN300~4800mm)
Materials: cast iron (A126 B, GG25), ductile iron (A536 65-45-12, GGG40), carbon steel (A216 WCB)
Applicable medium: water, rain water, river water
Applicable temperature: -10℃ ~ +80℃
Working pressure: 6bar, 10bar, 16bar, 25bar