Number 1 against corrosion! ASAHI YUKIZAI, the best for plastic valves

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What are plastic valves?

They are valves made from plastic materials such as unplasticized polyvinyl chloride (U-PVC), polypropylene (PP), and polyvinylidene fluoride (PVDF).
They have better corrosion resistance and chemical resistance than metal valves, and are also lighter.

ASAHI YUKIZAI provides plastic valves for customers in a diverse range of fields.

The advantages of plastic valves The advantages of plastic valves

  • Plastic valves are corrosion and chemical resistant Plastic valves are corrosion and chemical resistant Excellent 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. Light and compact * Compared with the typical weight of metal valves. * The actual weight varies according to the type of valve.
  • Asahi Yusoki offers a wide variety of valve products. Asahi Yusoki offers a wide variety of valve products. A wide range of types to meet a diversity of 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. A wide range of types to meet a diversity of needs 3. A wide range of types to meet a diversity of needs

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 Valve
Compact, lightweight valve for simple operations to let fluid flow through or stop it
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Diaphragm Valve
Diaphragm Valve
Good at flow control and has excellent reliability against leaks
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Butterfly Valve
Butterfly Valve
Fine aperture adjustments are possible, making it a good valve for slurry as well
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Pneumatic Actuated Ball Valve Type AR
Pneumatic Actuated Ball Valve
Type AR
Pneumatically operated valve. Lightweight plastic actuator.
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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. Swimming pools
The corrosion resistance of plastic materials makes them very useful for swimming pools that utilize hypochlorous acid.
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