2011年5月25日星期三

The use of chlorine-specific safety ball valve

Chlorine ball valve
and plug valve of the same class, the difference is ball is a sphere
with a circular through also for the opening and closing parts, ball
valve
with the stem around the center line of rotation to achieve the
valve opening and closing Purposes.
Basic series of liquid chlorine Q41F46 ball valve type, can be
divided on points (two) two-and three-piece ball and have a general
structure with the fluid resistance of the small, open and close fast,
simple structure, the Has the following advantages:
1, the use of FEP lining of the ball, with a high chemical
stability, can be applied in addition: "molten alkali metals and
elemental fluorine", other than any strong corrosive properties;
2, the use of full bore, floating ball structure, the pressure valve
can leak within the closed piping system easier to pass the ball
sweeping lines and pipe maintenance;
3, the opening and closing piece ball and stem casting (forging) as a
whole, to prevent pressure changes due to pressure caused by pieces of
the stem out the possibility of a fundamental guarantee for the
project in the use of safety;
4, compact structure, the smallest body cavity space, reducing the
retention of the medium, the other, a special molding process, so that
good sealing surface density, coupled with the word combination of the
ring PTFE packing, the valve to achieve zero leakage;
5, two-piece, three-piece structure can adapt to different
requirements of the pipeline system and working conditions, including
three ball to allow separation of the main body and both sides of the
body can achieve fast online replacement and maintenance.
Ball valve has an exceptionally strong chlorine corrosion resistance, suitable
temperature conditions in the -20-150 ℃, long-term transport any
concentration of acid, alkali, salt liquid medium. Long service life,
aging, toxin-free advantages of both the strength of carbon steel shell,
but also corrosion-resistant materials in lined, oil, chemicals,
rubber, plastics, pharmaceuticals, paper making, electroplating,
metallurgy, etc. Ideal for many industries. Scope: Urban, chemical,
metallurgy, petroleum, pharmaceutical, food, beverage, environmental
protection.
From the original1checkvalve
.

2011年5月8日星期日

Is a butterfly valve only considered a type of flow control valve if it is

Every type of valve can be generally considered to be a flow control
device. Most types of valves, gate, globe, ball, B’fy can

be manually
set anywhere from full open to fully closed and can be set to any
partially open position.

The term control valve generally refers to valves, including butterfly


types that are automatically regulated to modulate a rate of flow
according to a control signal to the valve actuating device.

Sometimes
the signal is from a remote sensing element such as the temperature
sensor controlling a refrigeration expansion

valve. Sometime the signal
is from within the actuating device itself as in a water pressure
regulator in your home city water

supply.

The signal itself can be modulating , as above or it can be on/off such
as an emergency shutdown valve on a steam

turbine or the on/off valve
on your washing machine.
From the original1checkvalve
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2011年5月5日星期四

intermediate level of flow

Operating positions for 2-port valves might be either shut (closed)
to ensure that no flow whatsoever undergoes, fully open for

max flow, or
sometimes partially available to any degree among. Such valves are
already called by various names for example

regulating, throttling,
metering, or wafer ball valve .For
example, needle valves have elongated conically-tapered discs and


matching seats for fine flow control. For a lot of valves, there might
be a mechanism to point because when much the valve is

open, but on many
occasions other indications of flow rate are engaged, including
separate flow meters.
“Here ya be,”

Shireen said cheerfully and it between the he was playing and subsequently one. Christ, they cram so some of these
things in here you

hardly got room to create a glass. But then, Grady
remembered using a wry grin, there was the evening when being near to
the

woman playing beside him within the Oasis in Mesquite were left with
two days of keno from her room. Knee bumping have their rewards.


“Thanks, babe,” he said to Shireen, and dropped two quarters for my
child tray. “4g iphone, though. Although you may beg me.


So I wish to purchase a valve into the house to manipulate the flow of water opting. I selected to order a acucated ball valve 
from free control systems to

manage the device. I hear they’re free and
ship quickly and cheaply. I’m hoping they’ll ship mine quickly.
Somedays I think of

motorized ball valves and that i get really excited
and cant strategy to test it. my lady says i’m crazy but I don’t believe
she actually is right about my obsession with motorized ball valves
from free control systems inc. I reckon that we’ll

discover.
I really planned to get my discharge controlled therefore i ordered a
from free control systems. These were great and

they also shipped fast.
I couldn’t believe how quick it arrived. Someday I’ll be ordering a lot
more motorized ball valves from

them. Soon as iI ordered they shipped
it i really can’t say enough about how awesome they’re. I suppose I’ll
be ordering very

soon using their website again. I do think you may will
order from them and enjoy yourself carrying it out repeatedly.
From the original1checkvalve
.

2011年4月26日星期二

Ball Valves for Plumbing Needs

More recently, on the PEX plumbing and radiant heating networks as brass fittings water shutoff dominated by two products: “valve

cork entrance omental tapered Threaded Brass Ball Valve BVT012D” and “Sweat

Brass Ball Valve BVS012D”. Passport service life of tube-omental valve – 8 years, the average life-at least 1500 cycles, time to failure

– at least 400 cycles. In fact, these valves after 40-50 cycles begin to be capricious: cotton gland packing into a brown porridge, soaked

in water, and the cone stop tube, originally friction to the body under the influence of abrasive solids and sludge sediment in the water

begins to hang out in the body, passing water in the closed position. If you also take into account the extremely high coefficient of local

resistance plug valves (3,5-5,7), it is not surprising that plumbers often just throw the locking cap, leaving the body dubious backdrop of

the pipeline.
As sleeved valves, then the passport MTBF of 1,300 cycles, their actual performance is enough for 20-40 cycles, after which the sediment

accumulated on the sealing saddle, do not allow completely block the flow by turning the valve itself in another “architectural

extravagances.” Moreover, the coefficient of local resistance they simply record – from 16 to 20. That is, at a flow rate of 1 m / sec,

passing through the valve, the pressure of the liquid is reduced by 1 m of water.
With the advent of the market brass ball valves, they immediately appreciated was evaluated, and the demand for these products

increases, as well as their scope. Now such products can be found in any economic stall. However, despite their apparent similarity, not

all ball valves are really reliable and durable. Along with high-quality Italian taps, more and more pushed over in the trade cheap Polish,

Chinese and Turkish valves, whose quality is far from perfect? In the struggle for the vast US market, some sellers have begun to

distribute cheap “consumer goods” for branded products, quite simply to sell a fake, so I’d like to give some practical advice to buyers

’ brass ball valves. As a rule, forgery in performance is much inferior to the original products. Their use in water and heating systems

can lead to accidents and big material losses. Counterfeits can cause serious damage and human health.
Wright Valves BVT034D recognized world leader in designing and manufacturing valves water Italy is known for such major firms as Matca-

Norca, Wright Valves, Bugatti, Giacomini, RBM, Rastelli, Tiemme etc. Italian province of Brescia consists of a huge industrial zone, where

the hangars is fittings under the brand name companies from Germany, Britain, USA, UAE and dozens of other countries. In practice, up to

70% of all ball valves entering the world market, made in Italy, where the business is engaged in more than 2000 companies. Stiff

competition forces the firms to constantly improve its products and production technology. At the heart of high performance ball valves of

the best world producers is the perfection of their design, precise adherence to the requirements of production technology and strict

control of chemical composition of materials.
My goal is either a fake – under cover, used well-known brand, at minimal cost to create an external object like a fake. First, what

saves the underground businessmen, it is – raw. Shells taps and ball valves shall be manufactured from special grades of brass, the

chemical composition of which in USA are regulated by GOST and abroad – national standards. These standards include the copper content 57

-60%, zinc – up to 40%, lead within 0,8-2,2%. (Lead is required to make the brass surface hardness). Illegal vendors typically use non-

ferrous metals, the content of impurities which are not controlled. As a result, manufactured valves, the percentage of lead content in

which, studies show that reaches 5-7%. It is well known that an excess of lead in water is very harmful to health.
Another way of cheating customers – to use for the manufacture of shells cheaper metal – zinc. This is also the risk of

counterfeiting. valve of zinc has increased brittle and may crack on the mechanical and hydraulic influences. There are ball valves, made

from silumin (aluminum alloy). Their reliability is still lower. Savings metal induces dishonest manufacturers to produce the body taps

with wall thickness from 1 to 0,5 mm. This is extremely reduces their reliability. (For comparison, the standard valves manufacturers

Matca-Norca have a wall thickness of 2 mm).
Cases and Ball Valves in the products of leading manufacturers are made by hot pressing or hot forging. Manufacturers producing fake not

spent on buying such technology and its products are manufactured by casting. These products are characterized by an uneven surface of the

body, Conveyor Chain, may have a mixed structure of the material – with aerial shells and, consequently, low reliability. Ball valves

(balls) rigged valves are often not made of brass, and of transformer steel, coated or even without it. Steel balls quickly corrode and

cease to be leak proof. Failure to invest in the copper alloy brass faucet body makes it suspiciously easy. Steel ball compensates for this

lack of weight, masking the presence of thin-wall housing is unacceptable.
Ball – the heart of the valve. Leading manufacturers attach great importance to the quality of the surface of ball valves. Brass Balls

are diamond grinding, they applied anticorrosion coating of nickel or chromium. As a result, the ball gets a perfect mirror surface.

Symptom of products of low quality – a dim, muddy or rough surface of the ball.
It is useful to say how counterfeit valves masquerading as the original. One of the techniques – misspelling the names of famous

companies, such as, Bogati instead of Matca-Norca. Formally, this is not fake, because the original brand is not used. There are cases of

writing only the names of countries, for example, USA, instead of adopting a made in Italy. The distortion of the famous logo, placing it,

for example, not a diamond, but a square or a circle, also serves to confuse the buyer. Evidence of fraud may be the absence of any of the

markings required for specific manufacturers. The sale of gas valves, and found such a primitive form of deception, as replacement faucet

handles on native yellow – gas (gas valves are more expensive). Price savings may be too high, so choose the ball valves are safer from

the range of recognized brands.
The general consumer is difficult to distinguish a fake Launch x431 from the original. Here are some simple tips to help in some cases

this can be done. If you can not buy products directly from the distributor, you can contact him by phone and to clarify whether it is an

official supplier of your seller. All known manufacturers of ball valves have their own web pages. Of these, you can learn about the

mandatory labeling of attributes of products, design features, etc. Some manufacturers place the working drawings of its products. When you

’re all aware of the labeling, dimensions, weight and other attributes of your product, you will easily determine its authenticity.
From the original1checkvalve
.

2011年4月18日星期一

Relying on technological innovation ball valve market

Longwan District of Wenzhou is located in Wenzhou Yongxing Austrian Valve Co., Ltd., in recent years, specializing in fine ball to go do the technological innovation of new products, and strive to build dedicated seal valve "Austrian workers" brand, so that "Olympic Valve" product to do more features and good quality, while pioneering innovation and independent R & D of new products, develop new domestic valve, in-house development of industry standard products so that ball valve products to expand the largest market , not only turned into a major project made a contribution to the valve, but also some key enterprise applications for supporting high-end valves, "Austrian Valve" quality reputation has been well known outside the industry. The face of the adverse effects of the international financial crisis, our valve industry how to eliminate negative impact on SMEs, the difficulties, against the current, it is common to face practical problems, Wenzhou Austrian Valve Co., Ltd. was brave to face the market, take the initiative out of the market and turn crises into opportunities, that "independent innovation and harmonious development" of new ideas, start from the adjustment of the internal product structure, to abandon the original valves to do the old low efficiency, and strive to do the fine valve products, the enterprise development Products made from the general to the direction of a single valve products, the implementation of product quality and specialization, to make specialty products, focusing on making a product series, the internal main product of the process, focus on improving product quality, the products do refined so special, a lot of backbone enterprises of the valve industry come to take the initiative to find and select products for their support, while making quality, but also adds support for the quality of the valve manufacturers reputation, improve product quality. After the enterprise product designed to do, and actively making product replacement, for their own development break a new path.
brass ball valve
From the original1checkvalve
.

2011年4月11日星期一

How to distinguish between various piece ball valves

How to distinguish between various piece ball valves?
Distinguish from the structure.
Piece ball valve

One-piece ball valve is

inside the ball, PTFE ring, lock nut composition, the ball slightly smaller diameter than the pipe diameter, similar to the Cantonese-style

ball.
Two-piece ball valve is composed of two parts; the seal is better than a ball valve, ball diameter and pipe the same diameter,

than a ball valve for easy disconnection.
Three-piece ball valve is composed of three parts; the middle of both sides of the valve

cover and valve body, three-piece ball valve is different from the two-piece ball valve ball valve and where is the demolition of

maintenance.
     Distinguish from the pressure
Three-piece pressure is much higher than the one-and two ball valves.

Outside the main three-piece ball valve fixed by four bolts, fastening to play a good role. Casting pressure valve can be reached 1000psi

≈ 6.9MPa. Forging a higher pressure is necessary to use the body.
    From the economic point of distinction
A ball valve as the main material is less than the other two categories,

best prices, and Cantonese use the same ball. Two ball valve prices is higher than a

style, three-piece body in a higher pressure capability consists of three parts, materials than the other two categories.
From the original1checkvalve
.

2011年4月6日星期三

PE ball valve for gas pipelines

Brass Ball Valve
1 Overview
Underground gas pipe network in the city system, polyethylene (PE) pipes are more and more applications. As with life,

with the performance, welding is simple, good sealing performance, easy to use ball valve

of polyethylene pipes have been indispensable to the control as more and more use of components and attention.
2, material selection
Polyethylene is a thermoplastic engineering plastic material, has certain strength, stiffness, toughness,

impact resistance, corrosion resistance and wears resistance. By controlling the polymerization process and in the polymerization by adding

a certain amount of co monomer, you can adjust or improve the performance of polyethylene material. Therefore, advanced polymerization

process or a direct result of differences in material properties. For long-term safe operation of pipeline systems, gas pipes, fittings and

valves must be graded according to the type of material Pipe Compound (PE80, PE100), and mixed ingredients, can not use the master batch.

Material color is generally black and yellow.
3, type structure
Polyethylene gas valve with the valve is generally divided into small polyethylene valve (SD63 below) and large

polyethylene valves (SD63 or more, with SD63). No small polyethylene valves generally bleeding mouth, large polyethylene valve can be used

according to need no, set one or set two elution mouths.
4 Features
(1) Resistant to corrosion. Polyethylene is inert material, except for a few strong oxidants, can be resistant to the

erosion of a variety of chemical media. Electrochemical corrosion-free, no coating.
(2) No leakage. Polyethylene brass ball valve body and the end of the connection pipe connecting part mainly fusion (fusing connection or

fused connection), weld width, sealing performance. Type joints with rubber rings or other mechanical joints compared to joints do not

exist because of the risk of distortion caused by external leakage.
(3) High toughness. Polyethylene is a highly ductile material, the

elongation at break generally more than 500%, based on management’s ability to adapt to uneven settlement is very strong. Is also a good

seismic performance of the pipeline?
(4) Long life. Polyethylene materials can be used more than 50 years, which is foreign to the

tensile strength based on polyethylene pipe loop hydrostatic design basis of long-term value (HDB) identified, already recognized by

international standards.
(5) to facilitate construction. Polyethylene valves and light weight compared to metal valves, easy to

install. Open and close easily, the operating torque is small. For the full bore valve, the pressure loss.
5, application
High pressure polyethylene pipe should be set on the charge of sub-polyethylene valve and the valve should be on

both sides of the elution tube. High pressure polyethylene gas pipe branch should be set at the starting point of polyethylene valves, set

the diffuse unilateral control. PE ball valve is mainly density polyethylene pipe buried in the package, cut off all gas transmission and

media streaming. The valve can be buried in the ground, just install a simple sheath, opening and closing seat accessories, you can use a

special wrench to perform opening and closing operations on the ground, polyethylene ball valve for the media to meet the national standard

gas purification , liquefied petroleum gas and artificial gas.
6 Conclusions
PE ball

valve
opening and closing of the torque, the valve no corrosion, no maintenance and repair, the service life of 50 years to

improve the integrity of polyethylene pipe network system. The overall style of the body, eliminating the possibility of leakage,

polyethylene, polyethylene pipe connected with the ball, no need to set the valve shaft, buried construction, the body can use the butt end

of pipe welding method of welding or electrical connections, valves, The opening and closing operations on the ground than the overall

economic efficiency of conventional metal ball about 2 times higher. Polyethylene pipe with excellent performance, with the polyethylene

material for further research and development, polyethylene pipes and valves have better applications.
From the original1checkvalve
.