Plug valves are one of the most popular category of pipe vales used in variety of applications. Also known as cock or stop-cock valves, plug valves have been in use since a long period of time. Infact, they were developed for use in citywide Roman plumbing systems and remain as one of the most widely used valves for both on/off and throttling services. They are a kind of rotational motion valves which are used to stop or start fluid flow. They are so called because of the shape of the disk, which resembles a plug.
Materials used:
Stainless steel
Aluminum
Bronze
Bra ss
Copper
Nickel
Cast iron
Steel
Plastic
Rubber etc.
Following the complete list of Plug Valves:
+ Connection Lift Plug Valve
+ Flange Connection Lifting Plug Valve ANSI
+ Inverted Pressure Balance Lubricated Plug Valve ANSI
+ Sleeve Type Soft Sealing Plug Valve Acc.To DIN
+ Sleeve Type Soft Sealing Plug Valve ANSI
Design & Manufacture Std:
API600, API 6D,ASME B16.34, JISB2071, JISB2073,JISB2083, BS 1873,BS1414
End Connection Std:
SME B16.11,ASME B1.20.1,ASME B16.5, DIN2543-2550 ,JISB2212-JISB2214
Uses of plug valves:
Plug valves are high capacity valves that are found widely in-
- low-pressure sanitary applications and
- industrial applications, like petroleum pipelines, chemical processing and related fields, and power plants.
They are extremely versatile valves that can be used for directional flow control.
They can be used even in moderate vacuum systems.
Plug valves can efficiently handle gas and liquid fuel.
They can safely handle extreme temperature flow, such as boiler feed water, condensate, and other such elements.
Plug valves can be used to regulate the flow of liquids containing suspended solids, for example, slurries.
Package:
Plast ic bages/ Plywood boxes/ Bundle/ Shockproof packages
Material:
Stain less, Carbon steel, Alloy steel, Nickel alloys, Copper Alloys: Aluminium, Copper, Brass & Gunmetal
Product Standard:
ASTM, DIN, JIS, BS, API
Quality Certification:
ISO, CE, SGS
Conatact:
GZY Pipe Fitting Industries
Tel: 00862133780199
Fax: 00862151079722
E-mail:pfasia8@gmail.com
2010-Mar-20 8:49 PM
Globe valves derive their name from the rounded bodies/spherical shape and are widely used in fitting industry to regulate fluid flow in both on/off and throttling service. These linear motion valves consist of moving parts including disk, the valve stem, and the hand wheel.
The stem is used to connect the hard wheel and the disk; the valves are threaded and fit into the threads of the valve bonnet. These specialty valves allow fluids to pass the spaces between the edge of the disk and the seat when open.
Materials used:
Gun Metal
Cast Steel
Stainless Steel
Cast Iron
Alloy Steel
Brass
Bronze
Aluminum
Zirconium
Plastic etc.
Following the complete list of Globe Valves:
+ API Cast Steel Globe Valve
+ Bellow Sealed Globe Valve
+ API Pressure Sealed Globe Valve
+ Cryogenic Globe Valve
+ Flanged End Globe Valve150Lb~1500Lb
+ Flanged End Pressure Seal Globe Valve
+ Y-Pattern Globe Valve
+ Pressure seal Pattern Globe Valve
Design & Manufacture Std:
API600, API 6D,ASME B16.34, JISB2071, JISB2073,JISB2083, BS 1873,BS1414
End Connection Std:
SME B16.11,ASME B1.20.1,ASME B16.5, DIN2543-2550 ,JISB2212-JISB2214
Uses of Globe valves:
Globe valves are used where throttling is required.
They are also used where both throttling and shut-off required.
Globe valves can also be used for on-off service.
They are mostly confined to those applications where the valve is normally closed and drop is not important when the valve is open.
They are also commonly used in those situations where minimum pressure drop and bidirectional on-off service is required.
Globe valves are used as sampling valves, which are normally shut except when liquid samples are being taken.
2010-Mar-20 8:46 PM
The gate valve is considered to be the most popular style of valve in the world of flow control. It is a type of valve having a gate that moves perpendicular to flow of the service and hence the name. A gate valve is usually used as a shut-off valve. In the up position, the valve is open. In the down position, the valve is closed. It is also known by other names like knife valve or slide valve or stop or block valve as its primary purpose is to stop the flow. This valve has become an important piece of fluid control equipment for more than 150 years. In fact, this was the first valve patent issued in the United States. The gate valve has become a one-stop solution for fluid control call with relatively little basic design change.
Materials used:
Brass
Copper
Cast Iron
Bronze
Ductile iron
Stainless steel
Metal alloys
Plastic
Ceramic etc.
Following the complete list of Check Valves:
+ Cast Steel Swing Check Valve
+ Butterfly Swing Check Valve
+ Cast Steel Pressure seal Swing Check Valve
+ DIN Swing Check Valve
+ Flanged End Check Valve 150Lb~600Lb
+ Forged Steel Pressure seal Swing Check Valve
+ Piston Check Valve
+ Y-Pattern Piston Check Valve
Uses of Gate valves:
Gate valves are useful in applications involving slurries. This is because their ?gates? can move right through the slurry. Other than that, they are used in applications that involve viscous liquids like:
heavy oils
varnish
light grease
steam
oil
honey
molasses
cream non-flammable viscous liquids
high pressure, high temperature steam applications
Industrial applications:
Gate valves play an important role in virtually every:
chemical plant
refinery
pipeline industry
salt working pipelines
power industry and any other
industrial facility in the world
2010-Mar-20 8:46 PM
Check Valve a popular type of pipe valve are used to prevent flow reversal in piping systems. Check valves are appropriate for service in horizontal or vertical piping tuns. In other words, check valve is a mechanical device that allows fluid to flow through it in only one direction. Check valves consist of two-port valves. This means that they have two openings in the body, one for fluid to enter and the other for fluid to leave. That is why they are classified as “one-directional valves”. They are available in various designs, sizes and materials and used in a wide variety of applications.
Materials used:
Brass
Copper
Cast Iron
Bronze Ductile iron
Stainless steel
Metal alloys
Plastic
Ceramic etc.
Uses of check valve:
Check valves are best suited for moderate velocity applications.
They are often part of common household items.
They work automatically.
They do not have any valve handle or stem.
They are self-activating safety valves.
They permit gases and liquids to flow in only one direction.
They prevent liquid flow from reversing.
They are used in many fluid systems like in chemical and power plants, and in many other industrial processes.
They are capable of mixing multiple gases into one gas stream.
Check valves are installed in irrigation sprinklers and drip irrigation emitters to keep the lines from draining when the system is shut off.
Working of a check valve:
There is a hinged ball or door which is placed inside the valve. With the pressure coming upstream the ball is held open. On the other hand, when the pressure increases on the downstream side, it forces the ball or door to close which stops any back flow. An important factor in check valves is the cracking pressure. This is the minimum upstream pressure at which the valve will operate. Typically the check valve is designed in such a way to specify a specific cracking pressure.
2010-Mar-20 8:44 PM
A butterfly valve is a rotary motion valve. The main purpose of butterfly valve is used to stop, regulate, and start fluid flow. This type of valve is easily and quickly operated because there is a 90 degree rotation of the handle which moves the disk from a fully closed to fully opened position. Butterfly valves are available in various sizes and materials. Infact, the larger sized butterfly valves are actuated by hand wheels which are connected to the stem through gears and they provide mechanical advantage at the expense of speed.
Parts of a butterfly valve:
The butterfly valve consists of only five main components. They are as follows:
Body: These valves have bodies that fit between two pipe flanges.
Disc: The disk is the flow closure member of a butterfly valve.
Stem: The stem of the butterfly valve is either a one-piece shaft or a two-piece, also known as split-stem design.
Seat: The seat of a butterfly valve utilizes an interference fit between the disk edge and the seat to close or to shutoff.
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2010-Mar-20 8:43 PM
A ball valve is a type of pipe vale that opens by turning a handle attached to a ball inside the valve. They are used for quick shut off and low emission application. They are durable and can work to achieve perfect shutoff or closure even after years of not-in- use. They are always an excellent choice for shutoff applications. They are sometimes preferred to globe valves and gate valves for this purpose. Although, ball valves cannot offer the fine control that may be required in throttling applications but are still sometimes used for this purpose.
GZY PipeFitting Industries with integrated capacity of supply High quality valves with control systems, complete certification including third party inspection, tailored to customer specification.
Materials used:
Brass
Copper
Cast Iron
Bronze
Ductile iron
Stainless steel
Metal alloys
Plastic
Ceramic etc.
Types of ball valves:
There are three general types of ball valves:
Full port: This has an over sized ball so that the hole in the ball is of the same size as the pipeline thereby resulting in lower friction loss. The valve is larger and the flow is unrestricted.
Standard port: This has a smaller ball and hence a smaller port. This is less expensive. Flow through this type of butterfly valve is one pipe size smaller than the valve's pipe size which results in slightly restricted flow.
Reduced port: Here the flow through the valve is two pipe sizes smaller than the valve's pipe size which also results in restricted flow.
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2010-Mar-20 8:34 PM
Manifold Valves:
Manifold valves are widely used in the industrial fittings to reduce the cost of installation and prevent potential leakage. They help to simplify piping, improve the appearance and reduce the space requirements. These valves can further be customized according to a preferred connection type such as sockets, threaded, flare or o-ring face etc and are available in different configurations and styles for a wide range of process control applications. The device helps to control flow, pressure, level, distribution and blow down of water. Valve Manifolds are also available in either a block, single flange or double flange connection for remote or direct installation.
Blowdown Valves:
The blowdown valves are a very popular category of pipe valves, used in a wide variety of applications. They are used for operation in open position. The main function of blowdown valve is mainly to control a continuous flow of steam /fluid under high differential pressure. The outstanding feature of this type of valve is that it can maintain fluid tightness and it is easily operated without the help of any wedging action.
Uses of blowdown valves:
Certain uses of these valves are as follows:
These valves are appropriate for use with air compressors.
They are used to help in the removal of slug and unwanted materials after cleaning the pipes.
Blow down valves are found on the water feeders.
They are also used to lower water cut-offs.
They can control the concentration of solids in the boiler.
Tilting check Valve:
DISK TYPE ) , (API 6A) CARBON STEEL BOLTED BONNET
BODY : ASTM –A351 CF8 /DISK :ASTM – 351 CF8 BW
BODY SEATING : AISI – 304
DISK SEATING : AISI – 304 1500LB 3"
Class 300 Tilting Check Valve
Bolted, Cover, Swing Type Disc, Threaded of Welded Seat Ring
Standards Compliance:
Basic Design: BS1868
Face to Face Dimension: ANSI B16.10
End to End Dimension: ANSI B16.10
Flange End:
2"-24" to ANSI B16.5
24": to MSS SP-44 to APS 605 on request B.W.Ends to AMSI B16.25 Manufacturing to NACE MR-01-75 on request
Type of Valves:
A valve is a piping components complete with operating system, able to control or shut off a fluid flow Valves are divided in:
Check Valve, Globe Valve, Power Station Valves, PipeFitting. Asia | E-mail:pfAsia8@gmail.co m
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