Electric power and coal chemical industry development needs to ball valve

In recent years the rapid development of China’s power industry, but also to maintain the trend continues to develop, because China

is a big country of coal resources, thermal power is still the main mode power supply.
2001-2002, started construction of new

installed capacity of 44.7 million power kw.
2003 started construction of a new power station installed capacity of 311o million

kw.
2004 started construction of a new power station installed capacity of 400 million kw.
2006 started construction of the power

station installed capacity exceeded 75 million ridiculed kw.
Energy in the China Development Forum seminar on fighting bribery and

reform, World Bank experts believe that the International Energy Agency: 80% of China’s future energy investment for the power industry,

from 2001 to 2030 the average annual investment of 509.6 billion yuan afternoon, including power generation, transmission each 50% of the

power invested 250 billion yuan per year. “Eleventh Five-Year” period, the sub-critical 3n million and 60 million kw Lw is the dominant

unit, has been set to vote more than eighty million kw supercritical 66n and l0o million kw generating units installed in the coastal and

coal areas. Of the units, the metal sealing ball valve to gradually replace the traditional, as the disaster furnace trap, a valve, drum

exhaust valve, step through the main steam line isolation valve, economizer, steam traps, over-pressure relief valve , soot blower

isolation valve, fly ash valve, oil injector valves and instrumentation valves. The path for 1-3in, cartridge force level Class600 ~

4500l.b, with Seoul as the ball Inconel material, chromium carbide coatings spraying, requiring anti-erosion, anti-cavitation, thermal

shock, and operating frequency. In new power plants, mostly from the North American metal sealing ball valve MOGAS, vTI, vELAN and wORK

companies such as suppliers.
According to the Chinese industrial equipment network forecasting, “during” the total electricity

demand for industrial valves 153,000 t, an average of 30,600 t, the total required amount of 3.96 billion yuan valve, the average annual

demand of 7.9 billion. Metal sealing ball which accounts for about 1 / 4, about 2 billion Bo. New and updated online metal sealing ball

running about 8,000 a 10,000 units per year.
The development of coal chemical industry needs to metal sealing ball valve
China is

a “multi-coal, in oil, less gas,” the country, rich in coal resources, more than 1 trillion t, according to 50% juice, refined coal 5000O

million t, to the available 100 years. Coal is not only energy, but also is an important chemical raw materials in the national “Eleventh

Five-Year Plan”, the coal chemical industry will become a new pillar industry, sigh inferior to the steel industry. As a chemical raw

material, coal can be ethylene, methanol, hydrogen, dimethyl ether, olefins, and with as ammonia, are required to first coal gasification.

Coal gasification plant is the leading coal chemical industry. Coal gasification process equipment are the following:
1 Germany Texaco

process (TEXACO), coal slurry transportation. 2 Shell Technology
(SHEEL), dry coal were transported. 3 Germany GSP process, dry

pulverized coal conveying delivery.
These devices need to metal sealing ball as:   1. slag lock valve. 2. high-temperature steam

valve. 3. high-pressure oxygen valve. 4 dust valve.
China now has a large coal gasification synthesis of chlorine 50 enterprises, more

than 1,000 medium-sized enterprises, with an annual output over 300 million t of 30 sets of equipment, 55 sets of medium-sized

installations, 40,000 t less than 700 units. Gasification furnace with about 4,000 units.
In recent years, the new Shell gas canister,

more than 20 sets of processes, such as Hubei, should the city, Liuzhou, Guangxi, Yunnan, Hunan Yueyang and large plow co E chlorine

factory, Hubei Zhijiang, Dalian, Liaoning, Henan Yongcheng, Xinxiang and Yima Coal methanol, Anqing, Anhui, Inner Mongolia Shenhua coal

hydrogen. New Texaco gasification furnace process 10 sets. 58 sets of proposed projects in the main gate valve supplier, such as Finland NELES, Germany BERRIN · ARGUS, and

ten countries in North America VELAN enterprises.
In these new devices, each device requires a metal sealing ball about 7,000 million

units, of which about 20 million sets of the oxygen valve, lock hopper valves, lock valves, and other residue of about 35 million units,

about 1,500 other coal transfer valve million. 4 sets per year production plant design, demand for the metal density of about 2.8 billion

when the ball valve. Indirect coal liquefaction and coal liquefaction or coal-oil is the national focus on the development of Sichuan

Century a new technology, who has listed the national “Eleventh Five-Year” plan. l0000 million a few levels of the success of the pilot

plant operation data show that crude oil prices not less than 30 dollars / barrel, coal liquefaction potential E of wood that has worries.

State has approved the project are: 1. Shenlong construction in Inner Mongolia 500 million t of coal direct liquefaction project, the first

production line of 100 million plan t the end of 2008 test run. 2. Shandong study indirect liquefaction of coal size 6,000,000 t, the first

phase of 300 million t. 3. Yintai Mountain Coal Construction of Inner Mongolia where the test device .4 16 million commission. Shanxi Coal

Chemistry, Shanxi Luan building where 16 million t / a pilot plant after the successful development of E to 300 million t / a.
Device,

the high demand of metal seated brass ball valve, pressure force level Class300 ~ 450OLb, pass through the 1-166in, 290 ~ 540C medium

temperature coal particle size law 00 head @ * oil, hydrogen requirements of the market for valves wear resistance erosion, thermal shock

and 800Oh continuous life.
God first in China 100 million t of coal and oxygen production line kiln cracking metal seal valve closure

MOGAS procurement from the United States about 2 million sealed metal seals Section hydrogen from coal ball about 50 million sets of

domestic procurement, maintenance and metal sealing ball Coal System gate valve domestic procurement of about 5,000 million units, the

other catalyst preparation, coal slurry transportation, fractionation systems, liquefaction of about 3,000 yuan, the total demand of about

3.3 million.
Natural gas supply and demand balance for the solution quickly, along the insult is to build a liquefied natural gas

urban village, such as the investment of 1,500 billion yuan in Shanghai Yangshan tired, humiliated invest 100 billion yuan Zhu, Fuzhou 300

billion yuan, such as in the other three sets of oil investment in Tianjin, Nantong , Rugao, need to mix -46 ~-196C low-ball, an annual

demand of about 2 billion.
China’s demand for coking industry into a relatively stable state, there are more than 700 coking

enterprises in 1900, more than a dozen focus afraid, production capacity will reach 17OMt / a, is the production, use, export powerhouse.

Dense metal parts per year Swiss Ball needs of its approximately 030 million yuan.
NDRC 2006, no “long-term two coal chemical

industry development plan.” According to this plan in the next 15 years, a total investment of China’s coal chemical industry will be

more than 1 trillion yuan. Average annual 75 billion yuan, of which 70% of equipment considered by Zhu Ning, about 500 of the yuan. A valve

of its investment in total investment of about 8%., 40 billion. Metal sealing ball valve market by 15% of the total demand into account,

annual coal chemical industry, the demand for the amount of the metal sealing ball is about 6 billion.
From the original1gatevalve
.

Fuel system (petrol/gasoline)

The fuel system on the Saab 9-5 operates through an electric pump
situated in the fuel tank which draws fuel from the tank and builds up
pressure in the system. The pressure is determined by the pressure
regulator, which maintains the fuel pressure at a constant level
relative to the pressure in the engine intake manifold. Consequently,
the amount of fuel injected into the engine is determined only by the
opening duration of the injectors.


Fuel is injected into the engine by injectors (solenoid valves) mounted
in the intake manifold close to the inlet valves and connected by a
common fuel rail.

The opening times of the injectors are controlled by electrical impulses
from the control module. For a detailed description of the engine
management system in the Saab 9-5, refer to Group 2 “Engine management
system, Trionic 4-cyl.” .
The fuel pump is situated inside a plastic reservoir clamped between the
top and bottom of the tank. It is located by ribs on the bottom of the
tank and secured at the top by means of the pump cover (7). The pump is
fitted in the tank by screwing the screw ring (10) into the pump cover
from outside the tank. Any flexing of the tank is absorbed by the fuel
pump's spring element (9).


An ejector is "driven" by the flow of fuel through the delivery line via
a T-piece. The pump is an electric rotary pump. The purpose of the
ejector is to ensure that the pump is continuously supplied with fuel.
Due to the location of the pump in the reservoir, the supply of fuel to
the engine is maintained during cornering and acceleration even when
there is only a small quantity of fuel left in the tank.


The pump can be removed through a hole under the rear seat cushions.


A non-return check valve on the pressure side of the pump, fitted in the
connecting nipple on the pump cover, prevents the pressure in the fuel
line from dropping immediately after the engine has been switched off.
The non-return valve on the return side of the pump prevents fuel from
flowing "in reverse" should the car happen to overturn.


To reduce exhaust emissions when the engine is started, the fuel pump
has been modified for M01. The fuel pump unit has a check valve by the
ejector intake that ensures that the fuel level in the pump reservoir is
kept as high as possible, even when the level of fuel in the tank is
low. This means that the fuel pressure when the engine is started
increases more rapidly, providing better starting and thus reducing
exhaust emissions. There is a fine filter by the check valve intake
protecting it from dirt.

The fuel level sensor in the tank is mounted on the fuel pump plastic reservoir via a jointed arm.


The RFI filter helps to reduce the risk of radio interference in the system.
From the original1gatevalve
.

Briefly self-reliance type pressure regulator with control valves difference

The difference between these two kinds of products, mainly lies in the
control valve needs both external sources such as power supply or air),
and the need to do driver can accept foreign control instrument signal
to change in the valve closure pieces of relative positions, so as to
realize the change fluid flow. And self-reliance type pressure regulator
is neither need foreign energy, and does not need to accept foreign
control instrument signal, only by being transported media pressure
signal, can achieve pressure to adjust.

Paddle type pressure regulator characteristics due to paddle type
pressure regulator without outside drive energy, so the product’s
operation force smaller, it has the following characteristics.

1, self-reliance type pressure regulator without plus energy, can in no
electricity non-air occasions work, convenient and save energy.

2, pressure piecewise range is finely and cross each other, adjust the high precision.

3, pressure setting during operation can be continuous Settings.

4, the valves pressure regulating valves, the former after after pressure with the pressure between now ~ vexed than for

5, rubber diaphragm type testing, actuators, high accuracy, action quick.
From the original1gatevalve
.

Y Type Bellows Globe Valve

Description:
Product Description
Y Type Bellows Globe ValveWe bear in our mind the business philosophy “customer first, forge ahead”, adhere to the “customers first” principle to provide our clients with excellent products and qualified services!
NO. Part name Material
1 Disc F6a F22 F304 F316 F321 F304L F316L
2 Pin F6a F22 F304 F316 F321 F304L F316L
3 Stem F6a F22 F304 F316 F321 F304L F316L
4 Bellow assemble 1Cr18Ni9Ti, 304, 316
5 Bonnet, 1.7363, 1.4308, 1.4408, 1.4306, 1.4301
6 Packing Flexible Graphite PTFE
7 Glands, 1.7363, 1.4308, 1.4408, 1.4306, 1.4301
8 Hand wheel ASTM A536 Gr.60-40-18 A216-WCB
9 Yoke nut ZQA19-4
10 Bolt ASTM A193-B7 A193-B8 A193-B8M
11 Nut ASTM A194-2H A194-8 A194-8M
12 Gasket Flexible Graphite stainless steel, PTFE
From the original1gatevalve
.

Valve Knowledge: stainless steel material suitable situations of butterfly

Valve length and overall height of the structure of small, open and close fast, and has a good flow control characteristics, the structural principle of the best butterfly production of large diameter valves. When asked to use the valve for flow control, the most important right choice when the valve size and type, so that it can properly and effectively work.

      

Typically, the throttle, adjusting the medium control and mud, requiring a short length of the structure, opening and closing speed (1 / 4 turn). Low cut-off (pressure difference), recommended use butterfly.

        In the double-digit adjusted, reduced in-channel, low noise, there is the phenomenon of cavitation and gasification, a small amount of leakage to the atmosphere, with abrasive media, you can use butterfly. Special working conditions in the throttle, or require strict sealing, or badly worn, low temperature (cryogenic) and other working conditions when using the butterfly valve, use a specially designed metal seal with the adjustment device to three or two eccentric eccentric Special butterfly. Butterfly valve for applications that require to be completely sealed, the gas leak test is zero, the life require a higher operating temperature -10 degrees to 150 degrees of fresh water, sewage, water, salt water, steam, gas, food, pharmaceuticals, oil and Various chemical and other pipeline. Soft seal butterfly valve for opening and closing the ventilation and dust-way pipeline regulation, widely used in metallurgy, light industry, power, petrochemical and gas pipeline systems and other waterways. Metal to metal sealing double eccentric butterfly valve suitable for urban heating, gas, water and other gas, oil, acid and alkali lines, as a regulator and the throttling device. Metal to metal sealing butterfly valve face except as a large-scale pressure swing adsorption (PSA) gas separation plant process control valves used, can be widely used in petroleum, petrochemical, chemical, metallurgy, electric power and other fields, when the gate valve, globe valve A good alternative.
From the original1gatevalve
.

Remarkable Knife Gate Valves

Original designs of knife gate valves can be traced back to tools
which consisted of a gate, parallel sides and a pressure that was placed
into a main pipe line. The purpose of these valves was to shut off the
flow of liquids by use of the pressure on the upstream side of the
valve. Fluid pressure was vital in order to create the required force in
which to seal the valve. Various methods had been developed in the past
to achieve this, in which the gate would be mechanically pushed against
both faces to create a tight seal. This then resulted in the valve
action being independent of the pipe line pressure.

During the mid 1860’s, a Mr. Chapman was chopping wood at his home.
His attention was soon drawn to the head of his axe, in particular, its
shape. This humble beginning soon evolved into the solid wedge gate
valve which is used throughout various industries in modern today. In
the following years, many attempts were made to combine the advantages
of the solid wedge and double disk gate valve together. Eventually, a
proven design emerged, which became known as the ‘split wedge’. The
advantage of the split wedge design is that although more costly, it has
the advantage of being self adaptable to the limited amounts of
distortion which is created by strain in the pipe line. In addition, it
provides a unique advantage for special installations where it is used
to seal a space between the seals with inert gases or steam.
In recent times, another variation has entered the industry
associated with knife gate valves, referred to as the ‘flexible wedge’.
In this design, the wedge is one piece, but possesses a cut out section
between the two seats. This is completed in such a way to provide a
minor degree of flexibility and gives the user the advantage of
relieving excess stress from the valve spindle which is required to
close the gate valve when subjected to extreme high temperatures. In
this connection, it is of interest to note that the field of atomic
energy has reverted to the 1920’s era, in the utilization of a valve
construction with parallel seats. Added to this, is the reliance on the
pressure within the pipe line to keep the valve tight. This has been
made possible, as although pressures are high when involved with
pressurized water reactors, the actual temperature is less than 600°F.
In the ever developing modern market of today, the various models of
valves such as knife gate valves, are manufactured from strictly
controlled materials which for USA knife gate manufacturers, must meet
specifications set by the American Standards Association (B16). The
dimensions of the valves have been standardized in order that in usual
practice, they may be interchanged between different manufacturers. When
methods of operating gate valves are being considered, the hand-wheel
is usually on the list. This is mainly due to the fact of the simple
operation of opening and closing. However, it must now be taken into
account that the sizes of gate valves are increasing, together with
pressures and temperatures. This has resulted in the strength required
to operate them, exceeding the capabilities of one work person. This is
in many ways a tribute to the manufacturers of knife gate valves and
valves in general, as these have proven their development ability in
meeting and even excelling in providing the equipment to satisfy users’
ever increasing requirements.
The development of knife gate valves and their related products is an
example of innovation and commitment to customer service on behalf of
their manufacturers. The designs of these valves and the materials used
in order to manufacture them, is keeping pace with the sophisticated
demands of global trade. The degree of expertise required within the
design and manufacturing of high quality and high performance valves
must be recognized as being highly competitive. Each valve, no matter
what its intended use may be, in every situation will be judged on merit
by its user in regards to the performance and efficiency it provides.
From the original1gatevalve
.

Fortic water tank

there should be a drian off valve at the bottom somewhere, connect a
hose to that (with the other end outside or in a toilet), Switch water
off, either by the tank or to the whole house, Switch boiler off and
open drain off valve.



If no drain off valve, then you can turn boiler off, turn water off and
open hot and cold taps and this will drain it all down. I would open all
taps just to make sure there is no water left in pipes.



If you have a drain off valve, this is the best option as it drains it all and prevents any risk of water coming out.



The pipe should go across and down, the best bet is to take the tapping off of the bit that goes down.
Replace faulty gate valve 1st-u can isolate then but no need to drain full system,drain valve will probably be goosed anyway
Personally I would never advice any body who has little or no plumbing
experience to work on a system which is half full. If it all goes wrong,
he will be stuck. And also the fact that it is easy to forget that
there is still water in some of the system and cut through the wrong
pipe. Easier to completely drain down. Unless you know what you are
doing.
Gate valves often let by a little when they get older,one of these is better if you're going to change your existing one.
From the original1gatevalve
.