· 簡體中文

The water supply valve mainly focuses on two points in the selection of materials. The first one must be the price. No matter what kind of valve, everyone definitely wants to choose a cost-effective one. The first concern is definitely the price. The second point is definitely It is a question of hygiene. Then, on our common materials, the text is described as brass, bronze, and stainless steel. So how do you choose?

Each material has the advantages of each material, that there are many copper valves, and most of them are bronze materials. What are the benefits of bronze material?

First: good corrosion resistance of bronze

Second: Bronze has high hardness

Third: lead-free

But in the recent actual project operation, there are brass materials submitted for review. Why on earth? Mainly price advantage. Brass is a copper-zinc alloy with a copper content of about 60%. Can all brass valves be used in water supply? That is certainly not the case. Many manufacturers use brass valves used in air conditioning systems for water supply valves, but the air conditioning valves are generally leaded brass, and there is no approval for water. Without the approval of the wading, it must not be used as a water valve.

Valve selection:

≤DN50 adopts globe valve, screw connection

＞ DN50 adopts gate valve, flange connection

Valve material:

The globe valve uses bronze (stainless steel / lead-free brass), and can provide water-related approvals approved by the provincial department

Gate valve is made of ductile iron or stainless steel

There are many materials for valve parts, including ferrous and non-ferrous metals and their alloys of various brands, and various non-metallic materials. The materials for valve parts should be selected according to the following factors

1: Pressure, temperature and characteristics of working medium

2. The stress of the part and its role in the valve structure

3. Has good manufacturability.

4. When the above conditions are met, there must be a lower cost.