The valtek mark one globe control valve offers superior performance in liquid and. They also minimize maintenance and reduce life cycle costs in process plants including steam, cryogenic, heat transfer oil and vacuum systems. Bolted bonnet with spiral wound gasket, also threaded and seal welded bonnet or threaed and pressure seal bonnet on optional. Apart from increaseing the efficiency of materials and the safety of production equipment,it not only reduces maintenance the costs and frequent maintenance of products. Specially designed for nuclear duties, these high integrity valves are available in. Globe valves are used for flow regulation, frequent operation, in creased flow resistance or for positive shutoff when closed. The yfl bellows seal globe valves are applicable to flammable, explosive, poison, strong penetrability, radioactive, valuable, highpurity medium etc inquiry now. A valve with a bellows to seal off the stem enclosure is an ideal choice whenever leakage to the atmosphere is intolerable due to toxicity, chemical corrosion, radioactivity, other health or ecological reasons. Though performance seems to be satisfactory initially, they are bound to leak through gland after some operations. Valtek mark one control valves flowserve corporation. A wide variety of bellow seal globe valve options are available to you, such as high pressure, low pressure. Gsc25 bellow seal globe valvegcc25 bellow seal globe valve. Bellows seal valve features general features globe reduced gland leakage valve the use of bellows reduces leakage from the gland components. Bellow seal gate valve, bellow seal globe valve, bellow.
The valve stem of bellows globe valve adopts double seal structure of bellows and stuffing to guarantee no leakage sealing at valve stem. For more than 60 years, our bellows sealed globe valves have been specified and installed in nuclear power plants throughout the world. Hot oil system, steam system, hot and cold water system etc. Leakage from the valve packing gland is often a problem for environment protection and sometime it is quite dangerous if such leakage is from a hazardous fluid or gas.
Swi bellows seal valves reduce fugitive emissions of toxic, lethal, or regulated fl uidsgases, minimize maintenance, reduce life cycle costs, and optimize productivity in process plants. Class 150 to 600 globe valves consist of a circular malefemale connection with a graphite or spiral wound gasket. Certification the company has passed iso90012015 quality management system certification. Bellow seal valves because they aid, help and complementstringent fugitive emission laws. Api 602 bellow seal gate valve, a105n, 34 inch, 800lb. Our bellows seal valve is good in quality and competitive in price. Two port maintenancefree bellows sealed shutoff globe valve for steam, water and other fluids. Basic cryogenic bellow seal globe tpattern valve description globe valves are used for flow regulation, frequent operation, increased flow resistance or for positive shut off when closed.
Screwed and seal welded joints replace flanged joints to ensure zero leakage the valve is thus hermetically sealed valve seating can be refurbished by simply lapping the body seat and replacing the disc, which can be performed in the field or end users shop. Bellows globe valve adopts internal bellows structure. Therefore, use of bellow seal valve is on the increase. Bellows seal cast steel valves bolted bonnet cast steel bellows seal gate. Bellows seal gate valve 17 products containing 191 items. The lower end of the stainless steel bellows welded to the stem to prevent stem from fluid erosion. A handwheel is fitted onto the sleevenut which effectively transfers a rotary. Therefore the use of bellow seal valve is on increase. Bellows seal globe valve zhejiang newton bellow valve co. Dixon eagle valves are designed to work safely for their intended use. Newton bellow valve is committed to design, development, manufacturing and sales of highgrade valve, and occupies more than 8000 square meters. We would provide professional bellows seal valve with good services for you. Globe valves are closingdown valves in which the closure member is moved squarely on and off the seat. Ukl bellow seal valves are designed and manufactured as per international standards, such as ansi, api, astm, bs, din, mss,etc.
Double wall bellow seal as standard size 12 inch 3 inch spindle with fine thread as standard lubricating nipple as locking device as standard spindle with bellows seal. China api 602 bellow seal globe valve manufacturer yaao supplies api 602 bellow seal globe valve, astm a105, 34 inch, class 800, npt nptsw sw ends. Bellow sealed valve applicable to the cutting and connection of pipelines medium that are used in various industries such as petroleum, chemical industry, industry, pharmacy, chemical fertilizer, electric power industry etc under nominal pressure of pn1. Selection of bellow seal valves is the only solution for this problem.
We are manufacturer and supplier of bellows seal valve following your specific requirement. Stem with protected external thread for high reliability. Goole ansi standard flanged bellow seal globe valve. Size ranges nps 12 2 dn 15 50 pressure rating asme classes 150 800 standard connections threaded, socket weld, flanged. Multiply bellow with long service life made of stainless steel. Bellows sealed globe valve, through the bellow part, to ensure that the valve stem design to reach zero leakage. Bellow sealed valve factory, bellow sealed valve manufacturers.
Its combine with up stem and downstem, with wear resistance material and corrosion resistance. Velan products bellows seal api 602 small forged valves. Bellow sealed valves products zhejiang defvalve co. To use the bellows inside the valve, and the bellows of stainless steel is welded. The yfl bellows seal globe valve includes ansi and din standards, nonrising stem and extended stem, bolted bonnet and high pressure selfsealing bonnet bellows seal globe valve. In common valves, the packing seal of the stem ages fast and it is easy to leak,but this design totally eliminates these short comings. Special care has been taken with the design of the class 150 valve body so that the. The yfl bellows seal globe valves are applicable to flammable, explosive, poison, strong penetrability, radioactive, valuable, highpurity medium etc. Effective for energy savings effective for preventing minor leakage additional odor and safety measures easy maintenance maintains liquid quality hitachi valve bellows seal valve features use of hitachi valves own bellows.
This can be achieved using a socalled sleevenut at the yoke portion of the valve bonnet. Kos can also offer forged steel gate, globe valve with bellow seal. Maintenancefree stem with bellows seal and safety gland. The nominal pressure are from 1mpa to 42mpa 150lb2500lb. To avoid any twisting of the bellow the valve must have a stem with linear movement only. We are looking forward to your email and establishing cooperative relationship with you. Din bellows seal globe valve china valve manufacturer. Bellows seal gate, globe valves gate and globe valves with. The use of a bellows seal valve significantly reduces external leakage. Bellows are available in many materials for virtually all corrosive chemical applications.
It is the connection between cover and stem with automatic roll welding. The other end constitutes a static seal between the valve body and bonnet. Vogt valves catalog and application manual vvenct000006 0817. The bellow is a critical component and forms the heart of the bellow seal valves.
When bellows do not work, the stem packing will prevent from leak. The key part of bellow sealed globe valves is mental bellow. View online catalogue download as pdf 444kb din standard gland packing globe valve. Multiple options for general and highpurity service. In pressure seal designs the sealing is achieved through a gasket that takes advantage of the internal pressure of the line. The design is applicable both conventional cage and tendril trim. Cryogenic valves for industrial gas applications pdf aci controls. Globe valve uses valve stem pressure to make the sealing face of valve clack and sealing face of valve seat fit tightly to cut off medium.
The valve is particularly applicable to industrial pipeline for flammable, explosive, toxic, strong penetrability, nuclear radiation, nuclear power project and ship confined space and other special medium. Velan bellows seal valves feature a formed multiply bellows welded to the stem and to the bottom of the bonnet, creating a hermetic seal or impermeable barrier. The mental bellow can keep the stem part no leakage. You can also choose from manual bellow seal globe valve, as well as from stainless steel, plastic, and brass bellow seal globe valve there are 332 suppliers who sells bellow seal globe valve on, mainly located in asia. The material of the valves covers a105,wcb, stainless steel alloyed steel, etc.
Din standard bellows seal globe valve nrs application. Bellows seal valves help eliminate fugitive emissions of toxic or regulated fluids and prevent corrosive or harmful atmospheric conditions from entering the process. Selection of bellow sealed valves is the only solution for this problem. It has about 160 staffs, 22 senior professional titles employees and more than 120 workers. Forged bellow seal gate valve, socket weld ends acc. Bellows seal gate and globe valves dixon eagle division. Carbon steel, stainless steel, alloy steel, duplex steel. C series cryogenic bellows seal globe valve dixon valve us. Bellows seal gate valve globe valves eriks shop be. Technical data valve designed to bs 1873 valve tested to api 598 bs 5146 flanged ends to ansib16.
Home products valves globe valves bellows seal gate valve. Jul 27, 2017 bellows sealed globe valve, through the bellow part, to ensure that the valve stem design to reach zero leakage. Welded seal which isolates system fluids to prevent leaks to atmosphere. Now, it already has become a professional endin industry valves company, manufacture and afterservice with producing highquality,with 100% tight shutoff technology of zero leakage, and excellent design use long life products. Boah16 and h25 with nonrotating stem and nonrising hand wheel with position indicator 4.
Our facilities incorporate all aspects of valve design, development and manufacture ensuring that swi can o. The addition of a bellows seal is the primary stem seal of the bellows seal valve, but includes the secondary packing and back seat in the design. Flow direction of medium in globe valve includes low in and high out and high in and low out. Bellows sealed globe valves bellows sealed globe valves for more than 60 years, our bellows sealed globe valves have been specified and installed in nuclear power plants throughout the world. Class 900 and above globe valves consist of a ring type joint. Bellow seal valve,cast bellow seal,cast bellow seal gate. The wall thickness of such series of valve is designed as per ansi b16. Failure to know and understand the intended use or to consider the size, temperature, application, media, pressure and manufacturers recommendations when selecting the proper valve assembly components can result in accidents and injuries, including death and serious and permanent injuries.
One of only four manufacturers globally to claim this distinction, wta products meet the new euro chlor standard, which defines demanding specifications for bellows. Bellows seal valve bellows globe valve, bellows seal. Like the made in germany quality seal, we introduced internal certification as a. Dec 28, 2015 bellow valve factory, zhejiang newton fluid control co. The mark one includes various bellows seal lengths. Din bellow seal globe valve is applicable to cutting and connectingthe medium in various pipelines, such as petroleum, chemical industry, pharmacy, chemical fertilizer, electric power industry, etc. The key part of bellow sealed globe valves is metal bellow. Floating ball valves can be manual operated lever or gearbox depending on valve size, but also.
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