Water Turbine Butterfly Valve

PN6/PN10/PN16/PN25
DN300~DN4800mm
Iron, Ductile Iron, WCB

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Water Turbine Butterfly Valve Descriptions

Water turbine butterfly valve is one type of energy storage hydraulic control butterfly valve, which is fully hydraulic control, opened by pump and closed by accumulator. As it is closed by accumulator but not counter weight, making it with small occupation and compact structure etc.
Water turbine butterfly valve is closed into two stages, which are quick stage and slow stage, first quick close and then slow close. The angle of quick and slow close may be adjusted according to customer’s request. Electrical control may be ordinary control and PLC control responding to customer’s request to carry out the in-line action between pump and valve or spot remote control and computer integrated control. 
Flowspec Luokai can produce the water turbine butterfly valve according to GB/T12238 with sizes of DN300~4800mm and PN16~PN25bar.
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

3. STANDARDS

  • Design & manufacturing: GB/T12238
  • Face to face: GB/T12221
  • Flanged ends: GB/T17241.6-2008 / BS4504 / EN1092-2 / DIN2501
  • Inspection & testing: GB/T13927

2. TECHNICAL SPECIFICATIONS

  • PN6/PN10/PN16/PN25
  • Size: 12″~192″ (300~4800mm)
  • 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

4. APPLICATIONS

  • Hydropower station
  • Thermal power plant
  • Water plant
  • Water project

Why Choose Flowspec Luokai

45+ Years Experience

Founded in 1978, manufacturing industrial valves for over four decades with proven reliability worldwide.

Global Certifications

ISO 9001, CE/PED, WRAS, FM, UL, API approved — compliant with international quality and safety standards.

OEM Custom Solutions

Flexible design and manufacturing per your specifications — material, size, pressure, actuation tailored to project needs.

Worldwide Delivery

Exported to 5 continents — North & South America, Europe, Middle East, Southeast Asia, and Africa.

Our Service Promise

Strict Quality Control

Every valve tested to API 598, EN 12266 before shipment

Timely Global Delivery

Reliable logistics to 5 continents with secure packaging

OEM & Custom Design

Tailored material, size, pressure and actuation to your specs

Dedicated After-Sales

Technical support and service throughout product lifecycle

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sales@lokvalve.com