Hydraulic remote control lug 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: Lug type
Flange: JIS 5K 10K ,DIN PN6 PN10 PN16,ANSI 150LB
Actuator: single acting / double acting
Accessories: hand wheel, limit switch box


Hydraulic marine butterfly valve are specially designed for marine and seawater applications, providing reliable and efficient fluid control management. These versatile valves are available in a wide range of body, disc, and stem materials, meeting various industry standards to suit your specific needs.

Body Material Options

  • Ductile Iron
  • Cast Steel
  • Stainless Steel
  • Super Duplex Stainless Steel
  • Aluminum Bronze C954

Disc Material Options

  • SUS304
  • SUS316
  • SUS2205
  • SUS2507
  • SUS1.4529
  • C954


  • DN50-DN2000

Stem Material Options

  • 45# Steel
  • 416 Stainless Steel
  • SS304 Stainless Steel
  • SS316 Stainless Steel

Seat Material Options

  • NBR (Nitrile Rubber)
  • EPDM (Ethylene Propylene Diene Monomer)
  • VITON (Fluoropolymer)
  • PTFE (Polytetrafluoroethylene)


  • Lug Type
  • Wafer Type
  • Flanged Type

Flange Standards

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

Pneumatic Actuator

  • Single Acting
  • Double Acting


  • Hand Wheel
  • Limit Switch Box


  • CCS (China Classification Society)
  • ABS (American Bureau of Shipping)
  • DNV GL (Det Norske Veritas Germanischer Lloyd)
  • LR (Lloyd’s Register)
  • BV (Bureau Veritas)
  • NK (Nippon Kaiji Kyokai)
  • KR (Korean Register of Shipping)
  • RS (Russian Maritime Register of Shipping)

When selecting your hydraulic remote control lug butterfly valve, keep in mind the specific needs of your application, including media compatibility and environmental conditions. These robust and durable valves are designed to withstand even the harshest marine environments while providing efficient flow control, making them an ideal choice for your seawater application needs.

lug valve size


What is a marine hydraulic butterfly valve?

A marine hydraulic butterfly valve is a specialized type of flow control device widely used in the maritime industry, specifically designed to handle the challenging conditions and demanding requirements of shipboard systems.

Engineered with utmost precision, this valve operates through a hydraulic mechanism that provides superior control over fluid flow in various ship systems. The hydraulic actuation ensures precise operation, seamless automation, and high reliability – attributes that are paramount in the demanding environment of marine applications.

The “butterfly” in its name refers to the disc located in the center of the pipe. This disc, which is connected to the actuator, rotates to control the flow of fluid. When the disc is aligned parallel to the fluid flow, the valve is fully open. Conversely, when the disc is perpendicular to the direction of flow, the valve is closed.

Application of marine hydraulic butterfly valve in ships and oceans

Marine hydraulic butterfly valves have revolutionized the way ships and oceans operate. These critical components, also known as quarter-turn valves, play a vital role in controlling the flow of fluids on marine vessels and in offshore structures.

Let’s delve into the various applications of these revolutionary valves and understand why they have become an essential part of modern maritime industry.

Controlling Fluid Flow:
One of the primary functions of a marine hydraulic butterfly valve is to control fluid flow within a system. They are designed to handle large volumes of water, air, oil or any other fluid that may be required for ship operations. Their unique construction allows for quick and efficient opening or closing with just a quarter turn motion, making them ideal for use in emergency situations.

Optimizing Space:
Space optimization is crucial on ships where every inch counts. Marine butterfly valves offer significant advantages compared to traditional gate or globe valves, which take up more space due to their complex design and operation mechanisms.

Butterfly valves require minimal installation space due to their simple design consisting of only three main components: body, disc, and stem assembly. This not only saves valuable space but also reduces overall weight – an important consideration for any ocean-going vessel.

marine valve

Durability at Sea:
The harsh marine environment poses many challenges when it comes to equipment durability at sea. The constant exposure to saltwater can cause corrosion and erosion damage over time leading to costly repairs or replacements.

However, marine hydraulic butterfly valves are made from high-quality materials such as stainless steel or bronze that offer excellent resistance against corrosion ensuring extended service life even in saltwater environments.

What material is most suitable for marine hydraulic butterfly valves in the marine environment?

When it comes to marine hydraulic butterfly valves, the material used is crucial for ensuring optimal performance and longevity in the harsh marine environment. As a leading expert in hydraulic systems for marine applications, I have extensive experience working with various valve materials and can confidently say that there is one material that stands above the rest: Duplex Stainless Steel.

In order to understand why Duplex Stainless Steel (DSS) is the best choice for these valves, we must first look at the unique challenges posed by the marine environment. From corrosive saltwater to fluctuating temperatures and extreme pressures, these conditions put immense strain on any equipment operating in this setting. That’s where DSS truly shines.

One of the main advantages of DSS is its exceptional corrosion resistance properties. Due to its high chromium content (22-26%) as well as molybdenum and nitrogen additions, DSS has superior protection against pitting, crevice corrosion, and stress corrosion cracking compared to traditional austenitic stainless steel grades commonly used in marine applications. This means that your hydraulic butterfly valves will have a much longer lifespan without compromising their performance.