Guangzhou shut-off valve "outline" features "classification" advantages and disadvantages principle "structure" applicable occasions" standard

The opening and closing member of the stop valve (Globe Valve) is a plug-shaped valve flap having a flat or tapered surface, and the valve flap moves linearly along the center line of the fluid. The movement form of the valve stem has a lifting rod type (the valve stem is lifted and lowered, the hand wheel does not move up and down), and there is also a lifting rotary rod type (the hand wheel and the valve stem rotate together and the nut is set on the valve body). The shut-off valve is only suitable for full opening and full closing, and adjustment and throttling are not allowed.
The shut-off valve is a forced-sealed valve, so when the valve is closed, pressure must be applied to the valve flap...

(1) The structure is simpler than the gate valve, and it is convenient to manufacture and maintain.
(2) The sealing surface is not easy to be worn and scratched, and the sealing property is good. There is no relative sliding between the valve flap and the sealing surface of the valve body when opening and closing, so the wear and the scratch are not serious, the sealing performance is good, and the service life is long.
(3) When opening and closing, the valve stroke is small, so the height of the shut-off valve is smaller than that of the gate valve, but the structural length is longer than the gate valve...

1) Straight-through stop valve
2) Angle stop valve; in the angle cut-off valve, the fluid only needs to change the primary direction so that the pressure drop through the valve is smaller than that of the conventional structure.
3) DC type cut-off valve; in the DC or Y-shaped stop valve, the flow path of the valve body is inclined with the main flow path...

The globe valve has the following advantages:
1. Simple structure, convenient manufacturing and maintenance.
2. The working stroke is small and the opening and closing time is short.
3, good sealing, small friction between sealing surfaces, long life...

The stem axis of the shutoff valve is perpendicular to the seat sealing surface. The valve stem has a relatively short opening or closing stroke and a very reliable shut-off action, making this valve ideal for use as a medium for cutting or regulating and throttling.
Once the valve flap of the shut-off valve is in the open state, its valve seat and the valve sealing surface are no longer in contact with each other, and it has a very reliable cutting action. This valve is very suitable as the cutting or adjusting and section of the medium. Stream use...

1. Needle type stop valve is used for precise flow control. The valve disc is usually made in one piece of the valve stem, and it has a needle head that is matched with the valve seat and has a very high precision. Moreover, the pitch of the needle-type shut-off valve stem thread is thinner than that of the conventional normal stop valve. Under normal circumstances, the size of the needle stop valve seat hole is smaller than the pipe size. Therefore, it is usually limited to...

1. The shut-off valve should be used on the pipeline or device of high temperature and high pressure medium. Such as thermal power plants, nuclear power plants, high-temperature, high-pressure pipelines of petrochemical systems.
2. On the pipeline where the flow resistance is not strict on the pipeline. That is, the place where the pressure loss is not considered.
3, small valves can be used with needle valves, instrument valves, sampling valves, pressure gauge valves, etc...

At the stage when the shut-off valve is closed from the fully open position, as the valve flap descends, the fluid creates a pressure differential between the flaps to prevent the flap from falling, and this resistance increases rapidly as the flap falls. When the shut-off valve is fully closed, the pressure difference between the disc and the valve is equal to the working pressure of the medium, and the resistance is large. The forced sealing force is added to increase the operating force at the moment when the shut-off valve is closed. During the opening of the valve, the thrust caused by the medium pressure or the differential pressure between the flaps is to help open the valve...

Forged steel JB/T 7746-1995 Reduced diameter forged steel valve 10～50 2.5～25MPa Universal cast steel JPI-7S-46-1999 CL150, 300 flanged cast steel valve 32～350 Cl150, CL300 Petroleum, petrochemical cast steel JIS B2071-1999 Flange connection forged steel globe valve 40～200 10K, 20K universal cast steel JIS B2072-1999 1.0MPa flange connection cast steel angle valve 40～200 10K General...

-------------------------------------------------- ---------------------------------------- Guangzhou Ao Village Valve Co., Ltd. is a headquarters Shanghai, specializing in the development, production, sales and after-sales service of various types of valves, and agent sales of various imported valves. The main products of Guangzhou AoCun Valve Co., Ltd. are: ball valve, butterfly valve, globe valve, gate valve, check valve, plunger valve, regulating valve, filter, diaphragm valve, plug valve, needle valve, exhaust valve, mud valve, Traps, breathing valves, flame arresters, balancing valves, pipe clamp valves, discharge valves, pneumatic valves, electric valves, food-specific valve series, high temperature and high pressure valves, cryogenic valves, thermal insulation valves, hydraulic control valve series, vacuum valves, stainless steel Valves, rubber-lined fluorine valves, American standard Japanese standard German standard valve series, bellows valves, ammonia valves, etc. Connection methods are: flange connection, wire connection, clip connection, butt weld connection. (pressure from 1.0MPA-32MPA), (temperature -20 degrees -550 degrees). Materials are: Cast iron, cast steel, stainless steel, forged steel agents Foreign products are Japan: HITACHI (Hitachi), KITZ (Beize), valve days (VENN), Korea JK special valves, UK UK Valve International Co., Ltd. UK ( Youke) valve. Guangzhou Ao Village Valve Co., Ltd. products are widely used in chemical, petrochemical, petroleum, paper, mining, electric power, liquefied petroleum gas, food, pharmaceutical, water supply and drainage, municipal, mechanical equipment, electronics industry, urban construction and other fields. Products sell well all over the country, high quality, efficient service, won the trust of users and extensive praise. Guangzhou Ao Village Valve Co., Ltd. always takes quality as the basis, all meets the user's business philosophy, constantly applies new technology, new technology and new materials, and sincerely provides users with high quality valve products and more perfect after-sales service. Aocun valve originated from Taiwan, scientific management, mature design, exquisite craftsmanship, sophisticated equipment, meticulous processing, accurate testing, and has been well received by users since its sales. In the valve industry, there is the reputation of “Golden Body Village”! Your needs, our goals!

Fluorine-lined shut-off valve

Fluorine-lined cut-off valve is suitable for various concentrations of aqua regia, acid, hydrochloric acid, hydrofluoric acid and various organic acids, strong acids and strong oxidants at -50 to 150 °C. It is also suitable for various concentrations of strong alkali organic solvents and Other corrosive gases, used in the pipeline of liquid medium.

API American standard stop valve

BEUB American standard stop valves are ANSI and API standards. The sealing surfaces of the valve disc and seat are made of Slite cobalt-based hard alloy with different hardness. The seal is reliable, high hardness, wear resistance and high temperature resistance. Corrosion resistance, good scratch resistance and long life.

National standard stop valve

The BEUB national standard stop valve is a commonly used product in the series of shut-off valves. The sealing surfaces of the valve seat and the disc are made of Slite cobalt-based hard alloy with different hardness. The seal is reliable, high hardness and wear-resistant. High temperature resistance, corrosion resistance, good scratch resistance and long life.

Needle valve

BEUB needle valve is a small-diameter instrument valve, which plays a role of opening and closing and precise flow control in the instrument measuring pipeline system. It mainly includes power station instrument series, oil field special series and American standard series.

Cryogenic shut-off valve

Low temperature shut-off valves are generally referred to as valves operating at temperatures below -110 ° C and are widely used in liquefied natural gas, liquefied petroleum gas and other cryogenic industries. BEUB currently manufactures shut-off valves for temperatures up to -196 ° C. All parts are pretreated with liquid nitrogen at a low temperature to completely avoid seal deformation and leakage during use.

Plunger valve

BEUB plunger valve, also known as plunger stop valve, has a sealing surface with a radial sealing structure. The two elastic sealing rings placed on the polishing plunger are applied to the valve cover by the connecting bolts of the valve body and the valve cover. An elastomeric seal around the plunger is pressed against the closed valve to achieve a seal.

Insulation jacket shut-off valve

The BEUB insulation jacket cut-off valve adopts the insulation jacket design, and uses external heat source to circulate and heat outside the valve, which can effectively prevent the temperature loss of the medium when passing through the valve and ensure the temperature of the medium.

Forged steel stop valve

BEUB forged steel globe valves are designed and manufactured according to API 602 standard. Three bonnet designs are available: bolted bonnet, welded bonnet, pressure self-tightening bonnet, user can choose different forms according to needs, BEUB provides RF method Lan, NPT thread, SW welded three connection methods.

Oxygen special shut-off valve

BEUB oxygen special stop valve is made of silicon brass or stainless steel with excellent material. It has the advantages of high mechanical strength, wear resistance and good safety. Used in the oxygen pipeline, it has excellent explosion-proof flame retardant performance, eliminating the unsafe factors on the oxygen pipeline, and is widely used in the pipe network of oxygen, steel, metallurgy, petrochemical, chemical and other oxygen projects. In addition to the function of ordinary valves, it has its own characteristics. Strict oil-free measures are taken during manufacturing and all parts are strictly degreased prior to installation.

Bellows stop valve

BEUB bellows stop valve adopts the design of formed stainless steel bellows. The bellows reciprocating test is 10,000 times without failure, and the sealing performance is reliable. It is suitable for industrial and mining with inflammable, explosive and toxic and harmful medium, which can effectively prevent the leakage of the valve.