Check valve port through 450, how much is the standard length of 10 kg

What kind of check valve are you referring to?

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 the user's stove.

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 changing rapidly, and the rankings may vary by time and region. For the latest ranking information, it is recommended to refer to industry reports, professional institutions or market research data for more detailed and accurate information.

The letter of the check valve is represented as the inside: h The connection square of the check valve: 7 represents the clamp type, 4 represents the flange type, which are more common; Check valve structure:

According to the valve disc, the lifting valve disc: 1 represents the DC channel, 2 represents the vertical structure, and 3 represents the angular structure; Swing valve disc: 4 represents single-lobe structure, 5 represents multi-lobe structure, and 6 represents double-flap structure; In addition, there is a code name representing the butterfly, the number 7; Check valve sealing surface material:

X stands for rubber seal, H stands for stainless steel seal, and W stands for body seal. For example, H77X-16 stands for butterfly check valve, H41X-16 stands for lifting check valve, and H44H-16 stands for swing check valve.

Hope mine can help you.

h The connection square type of check valve: 7 represents the clamp type, 4 represents the flange type, which are more common; Check valve structure: according to the disc to determine, lifting disc:

1 represents DC channel, 2 represents vertical structure, 3 represents angular structure; Swing valve disc: 4 represents single-lobe structure, 5 represents multi-lobe structure, and 6 represents double-flap structure; In addition, there is a code name representing the butterfly, the number 7; Check valve sealing surface material: X stands for rubber seal, H stands for stainless steel seal, W stands for body seal.

For example, H77X-16 stands for butterfly check valve, H41X-16 stands for lifting check valve, and H44H-16 stands for swing check valve. Hope mine can help you.

Working principle: Under the action of fluid pressure flowing in one direction, the valve disc opens; When the fluid flows in the opposite direction, the fluid pressure and the self-closing disc of the disc act on the valve seat, thus cutting off the flow. Among them, check valves belong to this type of valve, which includes swing check valves and lifting check valves.

The swing check valve has a medium hinge mechanism and a door-like disc resting freely against the sloping seat surface. In order to ensure that the disc reaches the right position on the seat surface every time, the disc is designed with a hinge mechanism so that the disc has enough room to swing and that the disc is in true and full contact with the seat. The disc can be made entirely of metal, or it can be inlaid with leather, rubber, or synthetic overlay, depending on the performance requirements.

When fully open, the fluid pressure is virtually unhindered, so the pressure drop through the valve is relatively small. The disc of the lift check valve is located on the seat seal on the valve body.

Flange thickness requirements for check valve H41X- DN150.

According to the thickness of the national standard DN50 stainless steel flange check valve, the nominal outer diameter of the pants, the wall thickness of the standard steel pipe and the wall thickness of the thickened steel pipe, the corresponding inner diameter is distinguished; , can be installed, ordinary (not stainless steel) about 20 30 yuan (related to the size of the diameter).

The weight of the globe valve of the national standard 300 is uncertain, the standard for the globe valve is not one, and the weight of the globe valve of different standards and different pressure levels is different.

1. GB T 12233-2006 "General Valve Iron Globe Valve and Lifting Check Valve".

2. GB T 12235-2007 "General Valve Flange Connection Steel Globe Valve and Lifting Check Valve".

3. JB T53165-92 "High Pressure Balance Globe Valve".

4. GB T 587-2008 "Marine Flange Bronze Globe Valve".

5. GB T 590-2008 "Marine Flange Cast Iron Globe Valve".

6. GB T 8464-2008 "Iron and Copper Threaded Connection Valves".

7. Internal thread connection gate valve, globe valve, ball valve, check valve Basic size Iron globe valve

Answer: 30 30 900 square centimeters.

1 square meter 10000 square centimeters.

900 10000 sq.m.).

Check valve 30 30 cm one is square meters.