Hydraulic remote flange butterfly valve

Body: ductile iron, cast steel, stainless steel, Super duplex stainless steel, aluminum bronze C954
Disc: SUS304 SUS316 SUS2205 SUS2507 SUS1.4529 C954
Size: DN50-DN2000
Stem: 45# 416 SS304 SS316
Connection: Flange
Flange: JIS 5K 10K ,DIN PN6 PN10 PN16,ANSI 150LB
Actuator: single acting / double acting
Accessories: hand wheel, limit switch box


In this document, we will provide detailed technical specifications and operating guidelines for a hydraulic remote flange butterfly valve optimized for marine. We will focus on the valve’s construction materials, operating pressure and temperature range, flow-control capabilities, control system interfaces, and provide instructions for installation, operation, and maintenance of the valve.

Valve Construction Materials

  • Body: Ductile iron, Cast steel, Stainless steel, Super duplex stainless steel, Aluminum bronze C954
  • Disc: SUS304, SUS316, SUS2205, SUS2507, SUS1.4529, C954
  • Stem: 45#, 416, SS304, SS316

Connection & Flange Specifications

  • Connection: Flange
  • Flange: JIS 5K 10K, DIN PN6 PN10 PN16, ANSI 150LB

Pneumatic Actuator & Accessories

  • Actuator: Single acting / Double acting
  • Accessories: Handwheel, Limit switch box



Key Features & Applications

  • Ideal for use in marine and seawater environments
  • Materials used: Aluminum Bronze, Nickel Bronze

Valve Specifications

  1. Operating Pressure Range: Suitable for a wide range of operating pressures, depending on the chosen flange type (JIS, DIN, or ANSI)
  2. Temperature Range: -10°C to 180°C, depending on the selected seat material (NBR, EPDM, VITON, or PTFE).
  3. Flow-Control Capabilities: Bidirectional flow control with a wide range of flow rates, suitable for various pipeline applications and fluid types.
  4. Control System Interfaces: Compatible with hydraulic control systems, providing remote operation capabilities for demanding industrial pipelines.

Installation, Operation, and Maintenance

Follow these instructions for the safe and efficient installation, operation, and maintenance of the hydraulic remote flange butterfly valve:


  1. Confirm that the valve size, flange type, materials, and pressure rating match the intended pipeline application.
  2. Make sure the pipeline is clean and free of debris.
  3. Align the valve’s flange mounting holes with the pipeline’s flange holes.
  4. Insert the appropriate gasket between the valve and the pipeline flanges.
  5. Tighten the flange bolts in a criss-cross pattern to ensure even pressure distribution.
  6. Connect the hydraulic control system to the actuator, and test for proper operation.


  1. Use the hydraulic control system to operate the valve remotely, or manually control the valve’s position using the handwheel.
  2. Regularly monitor the valve’s performance, checking for signs of leakage, wear, or damage.

Maintenance & Troubleshooting

  1. Periodically inspect the valve for signs of wear, corrosion, or damage.
  2. Replace worn or damaged components as necessary.
  3. If leakage is detected, check the tightness of the flange bolts, the condition of the seat, and the gasket. Replace or adjust as needed.
  4. Regularly lubricate the stem and moving parts.

Industry-leading material options – Choose from a variety of high-quality materials including ductile iron, stainless steel, and super duplex stainless steel for superior strength and durability in any application.

  • Precise control with easy operation – Our hydraulic remote flanged butterfly valve is equipped with an actuator for single or double acting operation, providing precise control and effortless manual adjustments with the included hand wheel.
  • Trusted by the top classification societies – With certifications from CCS, ABS, DNV GL, LR, BV, NK, KR, and RS, our valves meet strict industry standards and have been rigorously tested for quality and reliability. Trust in our expertise in the valve manufacturing industry.
  • Versatile connection options – This valve features flange connections in JIS 5K 10K, DIN PN6 PN10 PN16, and ANSI 150LB standards to ensure compatibility with a wide range of piping systems. Seamlessly integrate it into your setup for seamless operation.


flange valve size


What is a hydraulic butterfly valve?

A hydraulic butterfly valve is a crucial component in the world of shipbuilding and drilling platforms. As technology continues to advance, this type of valve has become an essential element in modern ballast water systems.marine butterfly valve

So what exactly is a hydraulic butterfly valve? In simple terms, it is a quarter-turn valve that controls the flow of fluids by rotating a disc or vane within the pipe. This movement allows for precise regulation and control over the flow rate, making it ideal for use in situations where accuracy and efficiency are paramount.

But why is this specific type of valve so important for ships and drilling platforms? The answer lies in its design. Unlike traditional gate valves, which can be bulky and prone to jamming due to debris buildup, hydraulic butterfly valves have a sleek and compact design that minimizes clogging risks. This makes them ideal for use in ballast water systems where efficient flow control is crucial to maintaining stability on board.

Furthermore, these valves are also corrosion-resistant thanks to their materials such as stainless steel or bronze construction. This feature makes them perfect for marine environments where exposure to saltwater can take its toll on equipment over time.

In addition to their use in ballast water systems on ships, hydraulic butterfly valves also play an essential role in drilling platforms. Their ability to withstand high-pressure situations makes them suitable for regulating fluid flow during offshore oil extraction activities. Without these valves’ precision control capabilities, dangerous oil spills would be inevitable.

Hydraulic butterfly valve in marine applications

Hydraulic butterfly valves have become an integral component in marine applications, especially in the ballast water systems of ships and drilling platforms. Their precision and reliability make them a popular choice for shipbuilding companies around the world.

One of the main benefits of using hydraulic butterfly valves on board vessels is their ability to efficiently control large volumes of water flow. This is crucial for ballast water systems, which are responsible for maintaining stability and balance on ships by filling or emptying designated tanks with sea or fresh water. With the use of hydraulic power, these valves can be easily operated remotely, eliminating the need for manual labor and reducing maintenance costs.

In addition to their efficient functioning, hydraulic butterfly valves are also highly durable due to their design. They consist of a metal disc situated in the center of a pipe that pivots within a seal ring, allowing for precise control over fluid flow. This construction makes them ideal for use in harsh marine environments where conditions such as high pressure and corrosive seawater can take a toll on other types of valves.

Marine hydraulic butterfly valve used in shipbuilding

Marine hydraulic butterfly valves have become an integral part of modern shipbuilding and are widely used in various types of ships, such as oil tankers, container vessels, LNG carriers, and drilling platforms. These valves play a crucial role in maintaining the safe operation of these vessels, particularly when it comes to managing their ballast water systems.butterfly valve

But first, let’s understand what exactly a marine hydraulic butterfly valve is. Essentially, it is a type of quarter-turn valve with a disc-shaped closure element that rotates around its axis to regulate the flow of fluids or gases. The unique design and construction of this valve make it ideal for use in high-pressure applications found on ships and offshore structures.

One prime example where marine hydraulic butterfly valves are utilized extensively is in ballast water systems. These systems are crucial for maintaining the stability and trim (balance) of a vessel during its voyage by controlling its weight distribution. The process involves pumping seawater into tanks at one end while simultaneously discharging it from another end to maintain the desired buoyancy