The name of each component of the gate valveWho knows the name of each component of the gate valve

<> ordinary carbon steel gate valve includes a handwheel, a bracket, a valve stem, a ram, a valve body, a valve stem nut, a stuffing box, a packing, a packing gland, a packing plate, a locking bolt, and several parts. The above is also marked in detail by the specific structure.

A complete gate valve is composed of several large parts, such as valve body, valve cover, valve stem, valve plate and drive, and the composition of the gate valve is of course far more than these, and there are many small parts, and small parts are also an indispensable part of the gate valve. You can see the following figure for details:

Here are some 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, Chaoda, 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.

Valve is just a general term for the control components in the fluid transportation system, which can be divided into several categories, commonly used butterfly valves, ball valves, globe valves, gate valves, filters, balance valves, safety valves, etc., and are subdivided into manual, electric, pneumatic, etc., according to the connection method, it will be divided into several categories, clamps, flanges, quick assembly, ferrules, bonding, etc., so if you need a valve, you must be clear about what category the valve belongs to, and there must be specific parameters.

The model of the gate valve is indicated by the type of gate valve Z, the drive mode of the gate valve, the connection mode of the gate valve, the structure of the gate valve, the sealing material, and the code of the valve body material.

1. The gate valve type code is Z;

2. The driving mode code of the gate valve is indicated by letters, and the common ones are 2-electro-hydraulic, 9-electric, 6-pneumatic, 5-bevel gear transmission, 3-turbine worm; Manual does not need to be written out.

3. The connection form code of the gate valve is indicated by letters, 1-internal thread, 2-external thread, 4-flange type, 6-welding, 7-pair clamp type, 9-clamp, 0-ferrule sleeve;

4, gate valve structure form code, 0-elastic ram, 1-open rod wedge single ram, 2-open rod wedge double ram, 3-open rod parallel single ram, 4-open rod parallel double ram, 5-dark rod wedge single ram, 6-dark rod wedge double ram, 7-dark rod parallel single ram, 9-dark rod parallel double ram;

5. The sealing material or lining material is R-austenitic stainless steel, T-copper alloy, X-rubber, S-plastic, N-nylon plastic, F-fluoroplastic, H-CR stainless steel, Y-cemented carbide, J-lining rubber, and M-Monel alloy;

6. The valve body material code is Z-gray cast iron, K-malleable cast iron, Q-ductile iron, T-copper and alloy, C-carbon steel, P-chromium-nickel stainless steel, R-chromium-nickel-molybdenum stainless steel, V-chromium-molybdenum vanadium steel.

For example, for electric, flange connection, open rod wedge double gate, the sealing surface material is directly processed from the valve body, and the nominal pressure valve body material is gray cast iron gate valve: Z942W-1 electric wedge double gate gate valve.

As far as domestic valves are concerned, you can look at the valve model as follows.

1. The Z, J, L, Q, D, G, X, H, A, Y, S of the valve type code are respectively indicated:

Gate valves, globe valves, throttle valves, ball valves, butterfly valves, diaphragm valves, plug valves, check valves, safety valves, pressure reducing valves, trap valves.

2 The connecting code of the valve is indicated separately:

1. Internal thread, 2. External thread, 4. Flange, 6. Welding, 7. Clamping.

3 The transmission mode code of the valve is indicated separately:

9. Electric, 6. Pneumatic, 3. Turbine worm.

4. The body material codes z, k, q, t, c, p, r, and v are respectively indicated:

Grey cast iron, malleable cast iron, ductile iron, copper and alloys, carbon steel, chromium-nickel stainless steel, chromium-nickel-molybdenum stainless steel, chromium-molybdenum vanadium steel.

5. The seat seal or lining code R, T, X, S, N, F, H, Y, J, M, W are respectively indicated:

Austenitic stainless steel, copper alloy, rubber, plastic, nylon plastic, fluoroplastic, CR stainless steel, cemented carbide, rubber lining, monel alloy, valve body material.

The compilation description of the gate valve model is mainly for the code of the gate valve, additional requirements, drive, connection, structure, seals, pressure, material, etc.

Gate valve model compilation representation method:

Additional code for gate valve: WZ stands for bellows gate valve, DZ cryogenic gate valve, NKZ vacuum gate valve, PZ knife gate valve;

Gate valve type indication: z;

Drive mode representation: manual without code, 2 electro-hydraulic, 3 turbine worm, 5-bevel gear transmission, 6 pneumatic, 9-electric;

Connection mode: 4 flange connection, 6 welding, 7 pairs of clamp type;

Structural form representation: 0 elastic ram, 1 open rod wedge single ram, 2-open rod wedge double ram, 3-open rod parallel single ram, 4-open rod parallel double ram, 5 dark rod wedge single ram, 6 dark rod wedge double ram, 7 dark rod parallel single ram, 9 dark rod parallel double ram;

Sealing material materials: W valve body direct processing, T alloy, X rubber, F fluoroplastic, H-CR stainless steel, Y cemented carbide, M Monel alloy;

Pressure level indication: 10=means that the pressure is ten kilograms, 150lb-1500lb means American standard pound pressure, 5-63k means daily pressure;

Body material indication: Z-gray cast iron, Q ductile iron, T alloy, C carbon steel, P stainless steel 304, R stainless steel 316, V chromium-molybdenum vanadium steel.

Classified by use and function.

1) Cut-off valves are mainly used to cut off or turn on the flow of media. Including gate valves, globe valves, diaphragm valves, ball valves, plug valves, butterfly valves, plunger valves, ball plug valves, needle instrument valves, etc.

2) The regulating valve is mainly used to adjust the flow and pressure of the medium. Including regulating valves, throttle valves, pressure reducing valves, etc.

3) Check valves are used to prevent the backflow of the medium. Check valves of various constructions are included.

4) Diverter valves are used to separate, distribute or mix media. Including distribution valves and traps of various structures.

5) Safety valves are used for safety protection when the medium is overpressurized. Various types of safety valves are included.

Classified by main parameters.

Classified by pressure.

1) Vacuum valve working pressure is lower than the standard atmospheric pressure of the valve.

2) Low pressure valve nominal pressure pn mpa valve.

3) Medium pressure valve: Valves with nominal pressure pn of MPA.

4) High pressure valve: Valve with nominal pressure pn as mpa.

5) Ultra-high pressure valves with nominal pressure pn 100 MPa.

Classified by medium temperature.

1) High temperature valves: valves for medium operating temperature t 450.

2) Medium temperature valve is used for valves with medium operating temperature 120.

3) Normal temperature valve is used for valves with medium working temperature -40 t 120.

4) Cryogenic valves: valves for medium operating temperature -100 t 40.

5) Ultra-low temperature valves: valves for medium working temperature t 100.

Classified by body material.

1) Non-metallic material valves: such as ceramic valves, FRP valves, plastic valves.

2) Metal material valves: such as copper alloy valves, aluminum alloy valves, lead alloy valves, Chin alloy valves, Monel alloy valves, cast iron valves, carbon steel valves, cast steel valves, low alloy steel valves, high alloy steel valves.

3) Metal body lining valves: such as lead-lined valves, plastic-lined valves, and enamel-lined valves.

Is it on the filter press?