What does 169168 mean in brass gate valve

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

According to the provisions of "JB T 308-2004 Valve Model Preparation Method".

z== gate valve.

1== Connection: Female thread.

5== Structural form: dark rod wedge single ram.

16== Pressure Rating:

t== Body Material: Copper alloy.

DN65== Nominal diameter: 65mm

According to the provisions of "JB T 308-2004 Valve Model Preparation Method".

z== gate valve.

1== Connection form code: internal thread.

5== Structural form code: dark rod type single ram.

w==Sealing surface material: body, that is, the same material as the valve body.

16 Nominal pressure:

t== Body Material: Brass.

80== Nominal diameter: DN80

It is a Z45W PN10 brass gate valve. z is the valve type code, which represents the gate valve; The driving mode is a handwheel (code omitted and not written); 4 is the code of the connection form, which is represented by the flange; 5 is the code of the gate valve structure, which is represented by the dark rod wedge rigid single gate; w is the code of the sealing material or lining material, and the sealing material of the valve is the body material of the valve.

The castability and ease of processing of brass are obviously much superior to that of stainless steel, especially for valves with complex inner cavities, and the advantages of casting methods are more obvious. And stainless steel is much more difficult to cast than brass. But the obvious drawbacks of brass are:

Poor strength, relatively large volume, and corrosion resistance do not meet the requirements.

108 refers to the outer diameter of the gate valve connecting pipe, that is, the gate valve with a diameter of DN100.

British grade CZ108 for ordinary brass

HT200 is a grade of gray cast iron, which belongs to ferrous metals, and the carbon content is 200MPa for the minimum tensile strength of the gray cast iron HT200 gauge diameter 30mm specimen

Grades, properties and uses of commonly used engineering materials.

1) Carbon steel

The carbon content is less, manganese and silicon are beneficial elements, which have a certain strengthening effect on steel; Sulfur and phosphorus are harmful, increasing the hot and cold brittleness of steel.

Carbon Structural Steel Q Yield Point Quality Grade (ABCD) Deoxidation Method; High-quality carbon structural steel, two digits indicate the average carbon content of 10,000 fractions, and high MN content should be injected with MN; Carbon tool steels are added with "carbon" or t as a thousandth of the average carbon content.

2) Alloy steel

Commonly used alloying elements include silicon, manganese, nickel, chromium, copper, vanadium, titanium, rare earth elements, etc. Ordinary low-alloy structural steel, carburized steel, quenched and tempered steel, spring steel, rolling bearing steel.

3) Cast iron

Iron-carbon alloys with greater carbon content have worse mechanical properties than steel and cannot be forged. However, it has the characteristics of excellent castability, shock absorption, wear resistance, etc., coupled with low cost, simple production equipment and technology, accounting for 45 90 of the total weight of the machine; Grey cast iron HT200 watch.

Hello! Gate valves are made of materials of various properties, including gray cast iron, cast iron, and stainless steel. HT stands for: Grey cast iron. 200 represents: the main connection and dimensions of the gate valve.

Cast steel has less carbon content, good toughness, and higher pressure and temperature resistance than cast iron. Cast iron valves are not suitable for diesel, seawater and acidic media. Cast iron valves are less expensive.

The valve (famen) is a control component in the fluid transfer system, which has the functions of shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief.

Unscrew the nut in the middle of the red knob and replace it with a new knob.

The internally threaded brass gate valve is shown below:

As you can see from the picture, the red round knob is secured to the valve body by a nut in the middle. The lower part of the cylinder protruding from the middle of the valve body (where it is combined with the red round knob) is square, and the red knob with a square hole in the middle is just put in; The upper part of the cylinder is a cylindrical screw rod, and when the nut is screwed, the red round knob is pressed.

Once you know this structure, you can remove the damaged knob and replace it with a new one.