A steel flange provides a method to prevent leakage and other damages and secure metal pipe. Option for the appropriate steel flange greatly depend on types of substance which flow through the piping system. A long weld neck flange is designed for residential, commercial and industrial piping systems.
Definition
A steel pipe flange is used to strengthen, guide or attach one pipe to another. Standard steel flanges are disc shaped and are bolted or welded in place. Each steel flange is bored to receive and secure a specific size of pipe. Flange sizes, materials and opening dimensions vary depending upon what application the flange is designed for. Slip-on, socket-wired and threaded flanges are standard styles.
Details
A long weld neck flange is considered as a specialty flange because of its protruding neck, also referred to as a hub. The neck extends from the flat surface of the flange and receives and guides the pipe into place — the neck serves as an extension of the boring. Tapering the neck provides extra reinforcement for use in high-pressure or extreme and fluctuating temperature applications. Tapering the flange reduces the steel's thickness so that the opening of the neck blends with the pipe it receives — the tapered neck appears to be an extension of the pipe.
Wednesday, June 19, 2013
Thursday, June 6, 2013
Landee stainless steel ball valve with butt Weld ISO Mount
The stainless steel ball valve provides bubble-tight shutoff at 2000 psi. This valve is available with butt weld pipe connections and cast ISO mounting pad for actuation purposes. The reinforced PTFE 15% glass seat ring, Graphite stem packing and stainless steel ball/stem exhibit high chemical resistance properties and are recommended for process piping. The three-piece ball valve is recommended for petrochemical, utility service applications. It meets Fire Safe and Anti-Static requirements.
Valve pressure rating 2000 psi 138 bar non-shock cold working pressure
Max temperature rating 400°F
Conventional port
Enclosed bolt design
Reinforced PTFE seats
Stainless steel ball and stem
Blowout-proof stem
Cast ISO mounting pad
Vented ball
Locking lever handle
Butt weld end connections
Conforms to MSS SP-110
API-607 Fourth Edition Fire Safe
API-608 Anti-Static Size range ½" to 2"
Valve pressure rating 2000 psi 138 bar non-shock cold working pressure
Max temperature rating 400°F
Conventional port
Enclosed bolt design
Reinforced PTFE seats
Stainless steel ball and stem
Blowout-proof stem
Cast ISO mounting pad
Vented ball
Locking lever handle
Butt weld end connections
Conforms to MSS SP-110
API-607 Fourth Edition Fire Safe
API-608 Anti-Static Size range ½" to 2"
Wednesday, May 29, 2013
Keystone enjoys a strong reputation in the industrial valves
Keystone is the world's leaders recognized control valve in the valve and industrial process. The initial design, patent and the introduction of butterfly valve in 1951, focusing on the development of a strong reputation for reliability, quality and service. These properties are grown Pentair and maintain and brand as portfolio to include trapezoidal pneumatic and electric actuators and control packet, single point of contact for our valve package seamless compatibility and owner. Also with a trapezoidal name we design and manufacture a series of Flanged Gate Valves and ball valve. These products provide customers the same solid performance and low cost of ownership as our market leading valve range.
Monday, May 27, 2013
Making brand is a solid choice for valve company
"OEM narrower, must have the independent brand, but the transformation of the road is not easy." This is the recently held fifteenth session of Haijiao Hui channel brand culture forum, and said a foreign trade enterprises responsible person said to remember, human fight, fight cost "sweat economy" has failed, brand is the best choice.
Responsible for the foreign trade enterprise troubles caused by many foreign trade enterprises resonance, these enterprises generally face two difficulties: one is the appreciation of the renminbi, raw material prices, labor shortage caused by rising costs; two is from the surrounding low cost countries manufacturer's competition, these problems also plagued China AWWA C508 Water Check Valves company..
Shanghai Export Commodities Enterprise Association Feng Zhengzhou said: "the low price competition has not sustainable, foreign trade enterprises should walk out of predicament, to transfer from the sales price to the value of sales of product design, product function, brand culture, to completely reverse the heavy production, light brand marketing exchange ideas."
Overall, at present foreign trade enterprise transformation has three directions: first is the development of emerging markets in the Middle East, Latin America, Africa, Southeast Asia and so on; the second way is to create a foreign brand; three is to enter the domestic market, the three point is the future of China's Valve Factory go in the direction of.
"We try to create their own brands into the international market, but because the market marketing means and the lack of funding, foreign customers do not recognize us, so many enterprises always dare not to take a step. A company official said, "but even so, the enterprise must have its own brand, the direction of don't be afraid of the distance." Shanghai Ming Bao valve that it is worth China learning from the valve company, or that sentence future valve industry will be the enterprise brand competition.
Responsible for the foreign trade enterprise troubles caused by many foreign trade enterprises resonance, these enterprises generally face two difficulties: one is the appreciation of the renminbi, raw material prices, labor shortage caused by rising costs; two is from the surrounding low cost countries manufacturer's competition, these problems also plagued China AWWA C508 Water Check Valves company..
Shanghai Export Commodities Enterprise Association Feng Zhengzhou said: "the low price competition has not sustainable, foreign trade enterprises should walk out of predicament, to transfer from the sales price to the value of sales of product design, product function, brand culture, to completely reverse the heavy production, light brand marketing exchange ideas."
Overall, at present foreign trade enterprise transformation has three directions: first is the development of emerging markets in the Middle East, Latin America, Africa, Southeast Asia and so on; the second way is to create a foreign brand; three is to enter the domestic market, the three point is the future of China's Valve Factory go in the direction of.
"We try to create their own brands into the international market, but because the market marketing means and the lack of funding, foreign customers do not recognize us, so many enterprises always dare not to take a step. A company official said, "but even so, the enterprise must have its own brand, the direction of don't be afraid of the distance." Shanghai Ming Bao valve that it is worth China learning from the valve company, or that sentence future valve industry will be the enterprise brand competition.
Tuesday, May 21, 2013
The operation process of prior period opening pressure of safety valve
1.Flanged Safety Valves before delivery, should be by Taiwan to adjust its opening pressure to the user's setting. If users spring pressure level, according to the general should be adjusted by the lower limit of pressure level of the factory.
2. User before install the valve onto the protected equipment or before installing, adjustment must be installed on site, to ensure that the relief valve setting pressure value conforms to the requirements.
3. Within the scope of work indicated on the nameplate of the spring pressure level, by turning adjustment screw to change amount of spring compression, the opening pressure can be regulated. (4) before the rotation adjustment screw, valve inlet pressure should be brought down to the opening pressure is less than 90%, in order to prevent the rotation adjustment screw when the disc is driven to rotate, so that damage the sealing surface.
4. To guarantee the accuracy of the opening pressure value, should make adjustment when the medium conditions, such as type, temperature as close as possible to the actual operating conditions. Medium type change, especially when the accumulated state of the medium not (e.g., from a liquid into a gas phase) at the same time, the opening pressure is often change. Work at higher temperatures, the opening pressure is generally reduced. In room temperature adjustment and when used in high temperature, room temperature should be slightly higher than the setting pressure value of opening pressure value of the request. High to what extent and valves are relationship, structure and material selection should be according to manufacturer's instructions.
5. Regular safety valve used in fixed additional back-pressure occasions, when adjust the opening pressure after inspection (back pressure to atmospheric pressure) at this time, the setting value shall be the requirements of opening pressure value minus the superimposed back pressure value.
2. User before install the valve onto the protected equipment or before installing, adjustment must be installed on site, to ensure that the relief valve setting pressure value conforms to the requirements.
3. Within the scope of work indicated on the nameplate of the spring pressure level, by turning adjustment screw to change amount of spring compression, the opening pressure can be regulated. (4) before the rotation adjustment screw, valve inlet pressure should be brought down to the opening pressure is less than 90%, in order to prevent the rotation adjustment screw when the disc is driven to rotate, so that damage the sealing surface.
4. To guarantee the accuracy of the opening pressure value, should make adjustment when the medium conditions, such as type, temperature as close as possible to the actual operating conditions. Medium type change, especially when the accumulated state of the medium not (e.g., from a liquid into a gas phase) at the same time, the opening pressure is often change. Work at higher temperatures, the opening pressure is generally reduced. In room temperature adjustment and when used in high temperature, room temperature should be slightly higher than the setting pressure value of opening pressure value of the request. High to what extent and valves are relationship, structure and material selection should be according to manufacturer's instructions.
5. Regular safety valve used in fixed additional back-pressure occasions, when adjust the opening pressure after inspection (back pressure to atmospheric pressure) at this time, the setting value shall be the requirements of opening pressure value minus the superimposed back pressure value.
Saturday, May 18, 2013
Dixon showcased actuated valves and hygienic fittings at Total Process and Packaging Exhibition
Fittings are available ex-stock in a variety of types (RJT, SMS, DIN,
IDF and Triclamp) with sizes from 0.5–12in and are supplied either
fully polished or complete with polished outside diameter and bright
annealed or tumbled inside diameter. The range includes full FDA- and
3A-approved products and includes high-purity BPE standard biopharm weld
fittings, tees, elbows and reducers for pharmaceutical applications.
Dixon will also highlight its range of hygienic FDA-approved hoses and hose assemblies. Thanks to their odourless and taste-free properties, the products are suitable for the transfer of liquid foodstuffs. A range of valves, including seat valves, mix-proof valves and diaphragm valves, will also be on show.
The company has recently launched a range of manual and actuated multi-way hygienic and industrial ball valves from 0.5–4in and hygienic butterfly valves with EPDM, silicone or Viton seals from 1–10in. The valves can be actuated to customer specification with a range of accessories including limit switches, solenoids and positioners. Dixon offers same-day and next-day delivery on most standard actuated valves and custom fabrications subject to customer requirements.
Dixon will be exhibiting on stand E59 at the Total event.
Dixon will also highlight its range of hygienic FDA-approved hoses and hose assemblies. Thanks to their odourless and taste-free properties, the products are suitable for the transfer of liquid foodstuffs. A range of valves, including seat valves, mix-proof valves and diaphragm valves, will also be on show.
The company has recently launched a range of manual and actuated multi-way hygienic and industrial ball valves from 0.5–4in and hygienic butterfly valves with EPDM, silicone or Viton seals from 1–10in. The valves can be actuated to customer specification with a range of accessories including limit switches, solenoids and positioners. Dixon offers same-day and next-day delivery on most standard actuated valves and custom fabrications subject to customer requirements.
Dixon will be exhibiting on stand E59 at the Total event.
Thursday, May 16, 2013
Special check valves in the passive core-flooding system
Through an article titled “Resolve Koodankulam Issues” in TNIE (April
19, 2013), I had brought out certain serious safety issues emanating
from the supply of substandard components and equipment imported and
installed in the Russian VVER 1000 MWe Units 1 and 2 at the Koodankulam
Nuclear Power Project (KKNP) under construction in Tamil Nadu, India. I
had also pointed out that a major Russian government company,
ZiO-Podolsk, might have supplied components and equipment of poor
quality to KKNP, possibly impacting the reliability and safety of the
two nuclear reactors there.
NPCIL, in an additional clarification released on April 20, admitted that “four valves in the passive core-flooding system, though initially tested in factory premises under simulated conditions, showed variations from expected performance during integrated testing at the KKNP site.” This underplays the gravity of the entire situation. These four are “special check valves”, and they are crucial to the long-term core-cooling under severe accident conditions, including a total loss of electric power. It is a fact that no adequate testing of these valves was done in Russia. How could this happen in spite of the highly-lauded, multi-tier quality control programme under which NPCIL claims that an inspection team of theirs, stationed in the Russian factory, has witnessed and signed off on this testing?
NPCIL, in an additional clarification released on April 20, admitted that “four valves in the passive core-flooding system, though initially tested in factory premises under simulated conditions, showed variations from expected performance during integrated testing at the KKNP site.” This underplays the gravity of the entire situation. These four are “special check valves”, and they are crucial to the long-term core-cooling under severe accident conditions, including a total loss of electric power. It is a fact that no adequate testing of these valves was done in Russia. How could this happen in spite of the highly-lauded, multi-tier quality control programme under which NPCIL claims that an inspection team of theirs, stationed in the Russian factory, has witnessed and signed off on this testing?
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