21mm (1/2 Inch) Ball Valve – Reliable, Affordable, and Easy to Use

Looking for a simple, affordable, and reliable valve for your home or light industrial water system? The 21mm ball valve (equivalent to 1/2 inch) is one of the most popular choices today. Compact in size yet highly efficient, it is suitable for most common plumbing systems in Vietnam.

Constructed from brass or stainless steel and equipped with a lever handle, this valve allows quick on/off control with just a 90° turn. Whether used in residential or light industrial applications, it offers excellent sealing, minimal leakage, and easy installation.

Technical Specifications – Shin Yi DN15 Ball Valve with Lever Handle

Specification	Details
Size	Φ21 – DN15
Material	Brass
Connection Type	Threaded
Thread Standard	BS 21 / ISO 228-1-2000
Working Pressure	PN16 (Max. 16 bar)
Working Temperature	Max. 120°C
Working Medium	Clean water

 

 

Reference Price List for 21mm Ball Valves

Prices vary depending on brand, origin, valve type, and control method. The table below provides reference prices only. For the most accurate quotation, please contact Bao Tin Steel.

Type / Material	Size	Design	Reference Price (VND/unit)
Brass threaded ball valve	DN15	Internal thread	52,000
1-piece stainless steel ball valve	DN15	1-piece	102,000
2-piece stainless steel ball valve	DN15	2-piece	48,000
3-piece stainless steel ball valve	DN15	3-piece	120,000
Multi-source stainless steel ball valve	DN15	Stainless steel lever	from 65,000
MIHA brass ball valve	DN15	Internal thread	65,500
Multi-origin stainless steel ball valve	DN15	Stainless steel lever	135,000 – 475,000

 

 

Advantages and Applications of the 21mm Ball Valve

Thanks to its versatility, the 21mm ball valve is widely used across multiple sectors:

Residential Plumbing

• Commonly installed as a main shut-off valve in households.
• Controls water flow to appliances such as sinks, showers, toilets, washing machines, and water heaters.

Light Industrial Systems

• Compressed Air Systems: Open/close small air lines in workshops.
• Industrial Water Systems: Flow control for cooling lines or water treatment.
• Irrigation Systems: Regulates water in small-scale irrigation networks.

Chemical and Food Industries

• Suitable for transporting low-corrosive liquids.
• Used in hygienic environments, such as beverage and food processing.

Fire Protection & Other Uses

• Installed on residential fire suppression systems.
• Applied in solar water heaters, swimming pools, and localised flow control equipment

Conclusion

The 21mm (1/2 inch) ball valve is a practical and highly reliable solution for controlling water, compressed air, and other clean fluids. With its standard size, quick lever operation, and durable materials, it is compatible with most residential and small industrial systems.

Depending on your needs, you can choose brass, stainless steel, or plastic ball valves, each offering different performance benefits. Selecting the right type ensures efficiency, safety, and long-lasting use.

Why Choose Bao Tin Steel?

At Bao Tin Steel, we provide:

• Genuine products with full CO–CQ certification
• Competitive market prices
• Expert consultation and fast quotations
• Nationwide delivery (warehouses in Ho Chi Minh City, Bac Ninh, and Cambodia)

📞 Hotline: 0932 059 176
💬 Chat with us via Zalo for instant support.

Tiger Steel is a subsidiary of Bao Tin Steel.