Outstanding Corrosion Resistance ASAHI YUKIZAI Corporation,
the best for plastic valves

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What are plastic valves?

Plastic valves are made from advanced materials such as unplasticized polyvinyl chloride (U-PVC), polypropylene (PP), and polyvinylidene fluoride (PVDF).
Compared to metal valves, they offer superior corrosion and chemical resistance, while also being significantly lighter.
ASAHI YUKIZAI supplies plastic valves to a wide variety of industries around the world.

ASAHI YUKIZAI Provides Plastic Valves for Customers in a Wide Range of Sectors.

Why Choose Plastic Valves? Why Choose Plastic Valves?

  • Plastic valves are corrosion and chemical resistant Plastic valves are corrosion and chemical resistant Outstanding Corrosion and Chemical Resistance
  • The specific gravity of plastic valves is much lighter than that of metal valves. The specific gravity of plastic valves is much lighter than that of metal valves. Lightweight and Compact * Compared to conventional metal valves. * Actual weight depends on valve type.
  • Asahi Yusoki offers a wide variety of valve products. Asahi Yusoki offers a wide variety of valve products. Broad Range of Products to Meet Diverse Needs

1. Excellent corrosion and chemical resistance 1. Excellent corrosion and chemical resistance

The main reason we use plastic materials for our valves is their excellent resistance to corrosion and chemicals.
We have a diverse range of plastic materials available to respond to the needs of our customers, enabling us to meet the requirements of a diversity of chemicals and a wide range of environments and situations.

Characteristics of plastic materials used in ASAHI YUKIZAI valves

Material Characteristics
U-PVC Has excellent chemical and physical properties and is suitable for a diverse range of applications. Is widely used in ASAHI YUKIZAI products.
HI-PVC U-Has the same properties as U-PVC, but a special formulation boosts its impact resistance.
C-PVC Has greater heat resistance and can be used for fluids at temperatures up to 90°C.
* Heat resistance temperature varies depending on the fluid.
PP A lightweight material with excellent dynamic and mechanical properties at high temperatures.
PVDF Very strong with good impact resistance. Is also resistant to many chemicals.

Chemical resistance chart for chemicals customers often ask us about

Chemical U-PVC C-PVC PP PVDF
Hydrochloric acid(HCI) 25% concentration
Sulfuric acid(H2SO4 10% concentration
Sodium hydroxide
(Caustic soda, NaOH) 10% concentration
Sodium hypochlorite
(NaClO) 5% concentration

* When used at a fixed temperature of 40℃ ※normal temperature

>> Chemical resistance charts for other plastics are also available

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2. Light and compact 2. Light and compact

The materials used in ASAHI YUKIZAI plastic valves are much lighter (between 1/4 and 1/5 lighter)* than standard metal piping materials, and can therefore help to make the equipment ,facilities easier to maintain and improve work efficiency. we certainly ensure, that they have the necessary strength and pressure resistance.

Weight comparison of plastic materials used by ASAHI YUKIZAI and metal materials

Weight comparison of plastic materials used by ASAHI YUKIZAI and metal materials Weight comparison of plastic materials used by ASAHI YUKIZAI and metal materials

* Compared with the typical weight of metal valves. * The actual weight varies according to the type of valve.

3. Explore Our Valve Lineup 3. Explore Our Valve Lineup

A wide variety of ASAHI YUKIZAI plastic valves are available to suit the customer's equipment,facilities and situation.
Please contact us if you want to make improvements, or want to improve a situation that is bothering you. We are bound to have a product that will help.

Some of the ASAHI YUKIZAI valve range

Ball Valve
Ball Valves
Compact, lightweight, and ideal for simple on/off flow control.
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Diaphragm Valve
Diaphragm Valves
Highly reliable against leaks, and well-suited for precise flow regulation.
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Butterfly Valve
Butterfly Valve
Available in sizes from 40 mm to 900 mm to meet a wide range of operational demands.
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utomatic Valves
Automatic Valves
Corrosion-resistant and designed to maximize operational efficiency.
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Used in places like these! Used in places like these!

Photograph of a typical installation in a semiconductor plant Photograph of a typical installation in a semiconductor plant Semiconductor plants
These plants require good resistance to corrosion from chemical fluids, and precise flow control technology. That is why they choose ASAHI YUKIZAI plastic valves.
Photograph of automatic hydrant installation location Photograph of automatic hydrant installation location Agriculture
Plastics have good durability and corrosion resistance. That is why they are used for irrigation pipes, sluice valves and purge valves, and for automatic water supply valves for rice paddies and fields.
Typical photo of a typical installation in an aquarium Typical photo of a typical installation in an aquarium Aquariums and fish farms
ASAHI YUKIZAI products are used at fish and oyster farms, and at (seawater) aquariums throughout Japan thanks to their resistance to corrosion from seawater and to their long-term operational stability.
Photo of a typical installation in a chemical plant Photo of a typical installation in a chemical plant Chemical plants
We can offer corrosion resistance specifications suitable for use under harsh conditions, aimed at chemical plants which handle strong acids and alkalis.
Due to its corrosion resistance, there are many examples of its use in hot spring facilities. Due to its corrosion resistance, there are many examples of its use in hot spring facilities. Hot spring facilities
ASAHI YUKIZAI products are used for their corrosion resistance since hot springs contain sulfur (hydrogen sulfide), salt (sodium chloride), and other dissolved minerals.
The corrosion resistance of plastic materials is also of great help in swimming pool facilities that handle hypochlorous chlorine. The corrosion resistance of plastic materials is also of great help in swimming pool facilities that handle hypochlorous chlorine. Seawater Desalination
Plastic valves engineered to withstand brine and aggressive chemicals help mitigate corrosion risk. Lightweight for easier installation and built for long service life, they help ensure stable, reliable operation of desalination systems.
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