Is the manual stainless steel worm butterfly valve model standard?

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.

The corresponding model of manual stainless steel worm gear butterfly valve is: D341X-16P

This depends on what the connection method is, as well as the structural form.

Clamp type: soft seal D371X-16P hard seal D373H-16P

Flange type: soft seal D341X-16P hard seal D343H-16P

Model: D71X F Caliber: 40 800 Pressure:

Pneumatic ball valve is a ball valve with a pneumatic actuator, the execution speed of the pneumatic actuator is relatively fast, the fastest switching speed is seconds, so it is usually called a pneumatic and clear quick shut-off ball valve. Pneumatic ball valves are usually equipped with a variety of accessories.

For example, solenoid valves, gas terminal source processing triplets, limit switches, positioners, control boxes, etc., in order to achieve local control and long-distance centralized control, the switch of the valve can be controlled in the control room, and there is no need to run to the scene or bring manual control at high altitude and danger, which saves human resources and time and safety to a large extent.

Specifications of manual butterfly valve, taking manual butterfly valve D71X-16Q as an example:

Model: D71X

Name: Handle to clamp butterfly valve.

Caliber friendly change range :d N50-200

Nominal pressure : class150 pn6 pn10 pn16 5k 10k table d table e

Applicable temperature: according to the valve is noisy and the seat is made of material.

Applicable medium rent: fresh water, sewage, seawater, weak acid and alkali, air, steam and other valve body material: ductile iron.

Application field: municipal construction, water conservancy engineering, electric power, water supply and drainage, water treatment.

The disc valve slag shed is a valve that shouts Liang Yuan and uses the butterfly plate as the closing part. The butterfly valve is mainly composed of the valve body, valve stem, butterfly plate and sealing ring and other Zheng collapse parts, which is a 90° switch shut-off valve. It uses a handle or drive device to apply a certain torque at the upper end of the valve stem to transmit to the butterfly plate, so that the butterfly plate coincides or is perpendicular to the centerline of the valve body channel, and realizes the full open or full close action.

The main function of a butterfly valve is to cut off and connect the fluid in the pipeline, and can also be used to regulate the flow rate of the pipeline. The main features of butterfly valves: compact and reasonable structure, small operating torque, fast and flexible opening and closing, small flow resistance, large flow coefficient and easy maintenance and use.

This valve adopts a triple eccentric metal seal structure, and its sealing can achieve zero leakage and has a mandatory sealing performance effect. The connection form of the butterfly valve can be a clamp connection or a double flange connection. It can be operated manually, electrically, pneumatically and hydraulicly.

Second, the model preparation method:

Third, the main technical parameters:

Main technical parameters:

Nominal diameter. dn（mm）

830w830l

Nominal pressure. pn（mpa）

150lb300lb

Test pressure. Strength test.

Seal test. Applicable media. Water, steam, oil, seawater, etc. Applicable temperature.

Fourth, the material of the main parts:

The material of the main part.

Part name. Material.

Valve body. wcb
ss、cf8m

Butterfly plates. wcb
ss、cf8m

Stem. cr
cr18ni9ti

Seals. 316. Fluoroplastics.

Stuffing. Flexible graphite, fluoroplastics.

5. Structure and size table:

American Standard 815W series.

I don't know if it's a domestic beam or a foreign one, but please see the figure below for more details. The sealing structure of the flanged butterfly valve is made of polytetrafluoroethylene, synthetic rubber and phenolic resin to form a complex slag-based punching valve seat, so that the valve seat has better strength while being elastic. At the same time, the butterfly plate is fully coated with PTFE to make the butterfly plate have strong corrosion resistance.

Ben Bang automatic valves.

1. Because the pressure loss of stainless steel butterfly valve is relatively large compared with stainless steel gate valve and ball valve, it is suitable for pipeline systems with low pressure loss requirements.

2. Since the stainless steel butterfly valve can be used as flow regulation, it is suitable for selection in the stainless steel pipeline that needs to be used for flow regulation.

3. Due to the limitation of the structure and sealing material of stainless steel butterfly valve, it is not suitable for high-temperature and high-pressure stainless steel pipeline system. Generally, the working temperature is below 300, and the nominal pressure is below PN40.

4. Because the structural length of the stainless steel butterfly valve is relatively short, and it can be made into a large mouth valve, it is advisable to choose a butterfly valve when the structural length is required to be short or a large mouth valve (such as DN1000 or more).

5. Since the stainless steel butterfly valve can be opened or closed only by rotating 90°, it is advisable to choose the stainless steel butterfly valve in the occasion of fast opening and closing.