Valves
are used to control the flow of gases, liquids and granular solids.
They come in many types, sizes, materials, pressure and temperature
ratings, and means of actuation. Gate valves and ball valves are two
distinct members of the valve family, and are generally used for two
different types of flow control.
A ball valve, one type of quarter turn valve, is quite literally a ball placed in a passageway through which fluid flows. The ball has a hole through it, by which the valve opens and closes. When the ball is positioned so that the hole runs the same direction as the passageway, the fluid simply flows through it, and the valve is open. The ball can also be positioned so that the hole is perpendicular to the passageway so that the fluid cannot pass through, and the valve is closed. It is controlled from the outside, often with a handle that is turned back and forth to open and close the valve.
Most
ball valves can readily withstand the heat of a propane torch. However,
if you are concerned about overheating and damaging the valve, you may
wrap a wet rag around the body of the valve to keep it cool.
There are three different types of ball valve. A full port valve
offers no flow restriction, which means that when it is open, the
liquid can flow freely through it. This is achieved by making the ball larger than the passage size, so that the hole can be the same size as the passage. A standard port ball valve does not have an oversized ball,
and as a result, the hole is one size smaller than the passageway.
This creates a small amount of flow restriction as the fluid passes
through. A reduced port valve, on the other hand, has an smaller ball and an even smaller hole, which creates significant flow restriction as the fluid passes through it.
The
forged body ball valve provides extended service life and resists
failure caused by severe temperature applications. Optimum flow design
assures maximum system efficiency. Highly inert PTFE seats and seals
provide resistance to chemical corrosion. Parker also provides a
blow-out proof stem, chrome plated brass ball and a specially designed
handle enabling increased turning leverage for ease of opening and
closing. Parker’s ball valve can be readily identified assuring high
quality engineering and reliability.
Ball valves are commonly used
in plumbing. They are installed in the hot and cold water copper lines
so if you have to do a repair job like changing the faucets on a sink or
taking out a sink to put a new one in, you don't have to turn off the
water to the entire house. You just turn off the ball valve on the water
lines leading to the work project.The handle of the valve is connected
to an internal ball that has a hole running through it. When the valve
is in the open position the hole in the ball is lined up with the
opening in the copper pipes on either side of it. When the ball valve is
in the closed position the holes disappear from in front of the pipe
openings and no water can flow through. Soldering in a ball valve is no
different from soldering a regular copper joint. Here is how to solder
in a ball valve on a new copper water pipe installation.
Ball
valves can be full port or reduced port. Full port means the ball is
oversized and allows for full flow; reduced port means the ball is
roughly the same size as the inner diameter of the valve and restricts
flow. Plug valves are mostly full port.
Edit by http://www.cnhanjoy.com
Friday, October 25, 2013
Friday, October 11, 2013
Centrifugal pump
A centrifugal pump
converts the input power to kinetic energy in the liquid by
accelerating the liquid by a revolving device - an impeller. The most
common type is the volute pump. Fluid enters the pump through the eye of
the impeller which rotates at high speed. The fluid is accelerated
radially outward from the pump chasing. A vacuum is created at the
impellers eye that continuously draws more fluid into the pump.
Centrifugal pumps are a sub-class of dynamic axisymmetric work-absorbing turbomachinery. Centrifugal pumps are used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow. The rotational energy typically comes from an engine or electric motor. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser or volute chamber (casing), from where it exits.
If the discharge of a centrifugal pump is pointed straight up into the air the fluid will pumped to a certain height - or head - called the shut off head. This maximum head is mainly determined by the outside diameter of the pump's impeller and the speed of the rotating shaft. The head will change as the capacity of the pump is altered.
Vertical centrifugal pumps are also referred to as cantilever pumps. They utilize a unique shaft and bearing support configuration that allows the volute to hang in the sump while the bearings are outside of the sump. This style of pump uses no stuffing box to seal the shaft but instead utilizes a "throttle Bushing". A common application for this style of pump is in a parts washer.
A machine for moving fluid by accelerating it radially outward. More fluid is moved by centrifugal pumps than by all other types combined. Centrifugal pumps consist basically of one or more rotating impellers in a stationary casing which guides the fluid to and from the impeller or from one impeller to the next in the case of multistage pumps. Impellers may be single suction or double suction.
Circulation pumps are also called circle pumps, they are mostly working for heating systems or mix water systems. Normally, the power of motor is from 75w to 165w, the voltage is 1-230v, 50hz. We have models 25-40, 25-60, 32-80 and so on. The pump head can be two size 130mm and 180mm. And the outlet hole size is normally 1-1/2”. The pump body is cast iron, the impeller is GF-PP, the shalf is stainless steel.
Edit by http://www.cnhanjoy.com
Centrifugal pumps are a sub-class of dynamic axisymmetric work-absorbing turbomachinery. Centrifugal pumps are used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow. The rotational energy typically comes from an engine or electric motor. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser or volute chamber (casing), from where it exits.
If the discharge of a centrifugal pump is pointed straight up into the air the fluid will pumped to a certain height - or head - called the shut off head. This maximum head is mainly determined by the outside diameter of the pump's impeller and the speed of the rotating shaft. The head will change as the capacity of the pump is altered.
Vertical centrifugal pumps are also referred to as cantilever pumps. They utilize a unique shaft and bearing support configuration that allows the volute to hang in the sump while the bearings are outside of the sump. This style of pump uses no stuffing box to seal the shaft but instead utilizes a "throttle Bushing". A common application for this style of pump is in a parts washer.
A machine for moving fluid by accelerating it radially outward. More fluid is moved by centrifugal pumps than by all other types combined. Centrifugal pumps consist basically of one or more rotating impellers in a stationary casing which guides the fluid to and from the impeller or from one impeller to the next in the case of multistage pumps. Impellers may be single suction or double suction.
Circulation pumps are also called circle pumps, they are mostly working for heating systems or mix water systems. Normally, the power of motor is from 75w to 165w, the voltage is 1-230v, 50hz. We have models 25-40, 25-60, 32-80 and so on. The pump head can be two size 130mm and 180mm. And the outlet hole size is normally 1-1/2”. The pump body is cast iron, the impeller is GF-PP, the shalf is stainless steel.
Edit by http://www.cnhanjoy.com
Monday, September 16, 2013
The Different Types of Single Faucet
Single faucets
are types of faucets where the water only flows from one spout. The
different types of single faucet fixtures are bathtub faucets, kitchen
faucets, bar faucets and lavatory faucets. Single faucets can have a
single lever on the handle that turns the water on or may have separate
hot and cold handles.
Single-handle faucets have a simple mechanism inside the faucet body that controls the flow of water. As you turn the handle left or right, the water temperature changes. After years of turning back and forth, the components inside the handle may begin to wear down. This may cause leaks from the spout or the handle itself. Disassembling the faucet to inspect individual components will help you isolate the issue without the need for a plumber.
Single-handle faucets have a simple mechanism inside the faucet body that controls the flow of water. As you turn the handle left or right, the water temperature changes. After years of turning back and forth, the components inside the handle may begin to wear down. This may cause leaks from the spout or the handle itself. Disassembling the faucet to inspect individual components will help you isolate the issue without the need for a plumber.
Single
faucets are the way most bathtubs are manufactured. The water flows
from a single spout that is mounted in the wall. If the bathtub is part
of a tub and shower combination, there will also be a shower head above
where you can wash your hair. There are three different types of
temperature controls available for bathtubs.
A single-handle faucet is removed the same way as any other faucet. The faucet is attached to the sink top with nuts that screw onto the faucet stems under the sink. Remove the nuts using a special tool designed for working in the tight space under the sink. Removing a faucet is accomplished with the use of just two tools. The entire task is completed in about half an hour, even by a novice.
A single-handle faucet is removed the same way as any other faucet. The faucet is attached to the sink top with nuts that screw onto the faucet stems under the sink. Remove the nuts using a special tool designed for working in the tight space under the sink. Removing a faucet is accomplished with the use of just two tools. The entire task is completed in about half an hour, even by a novice.
There
is a lever that you can lift up to turn on the water then move from one
side to the other to control the water temperature. When you move the
lever to the left the water gets warmer and when you move the lever to
the right the water gets colder. The single knob type of faucet handle
works the same way as the lever. Both of these types of handles deliver
the flow of water and the water temperature through a single handle. The
other temperature controls work with a hot and cold knob handle.
Single
faucets in the kitchen work slightly different than bathtub faucets.
The faucet itself is sold in a lot of styles from the arching swan neck
type to the wall mounted variety. For the swan neck style faucet, the
water source is underneath the sink and flows up through the neck and
out of the faucet head. The wall mounted variety has a straight pipe
that comes out of the wall and then arches slightly so the water will
flow into the sink.
The most common types of bar
faucets are single faucets. Typically the sink basin is much smaller
than a regular kitchen sink and there is also only one basin instead of
the normal two in a kitchen sink. The faucets are often manufactured in
the same way and use either lever handles or separate hot and cold
temperature controls.
Single-lever faucets in showers, tubs and sinks operate by mixing the cold and hot water together to achieve a temperature. Turning the lever 45 degrees to the right allows cold water flow only. At 135-degrees rotation the hot water starts mixing with the cold. At the full turn of the lever at 270 degrees only hot water is flowing. If the water temperature never gets hot enough at the full open mark, you can make adjustments inside the faucet to increase the temperature. Consequently, adjustments are available to add more cold water to the mix also.
Lavatories are another area that may
use single faucets. Many lavatories use a basin style sink vessel which
require a much taller faucet. To accommodate for the added height, the
faucet may either be a swan neck style or a pump style. The swan neck
style faucet is usually just a smaller version of the kitchen style. The
pump style faucet is a tall cylinder with the actual faucet jutting out
over the basin.
Single-lever faucets in showers, tubs and sinks operate by mixing the cold and hot water together to achieve a temperature. Turning the lever 45 degrees to the right allows cold water flow only. At 135-degrees rotation the hot water starts mixing with the cold. At the full turn of the lever at 270 degrees only hot water is flowing. If the water temperature never gets hot enough at the full open mark, you can make adjustments inside the faucet to increase the temperature. Consequently, adjustments are available to add more cold water to the mix also.
Thursday, September 12, 2013
Choose the hanjoy's bathroom faucet
The bathroom faucet can come in anabundance of varieties and the only
limit to the design of the bathroom faucetis the manufacturers
imagination. The bathroom faucets are manufactured inbasic three styles
called centerset, widespread and mini-widespread with anumber of
variations within those styles. Thus, the decorative and
functionalfaucets are often chosen to complement the architectural style
of the bathroom.Bathroom faucets are available in literally thousands
of various designs,patterns, and colors to please even the pickiest of
potential faucet owners.Each of the manufacturers offer designs and
models in several different styles.The only choice you need to make is
which one fits your needs and which onewould look best in your bathroom!
The bathroom is often one of the smallestroom in the house, but it ranks second behind kitchen for the number of designand architectural decisions that must be made.
There are a few things you should beconsidered when selecting the perfect bathroom faucet. First, consider the typeof handle you prefer, the style you prefer, the finish you want, therequirement of the lavatory it will be installed in, and at last, consider howmuch you want to spend. The most incisive consideration in choosing a bathroomfaucet is the requirements of not only the sink but the countertop on which itwill be mounted as well. Not only is the number of holes critical, but alsosome sinks such as vessels cannot be drilled at all. It has to be mounted on adeck or through a wall. It is also important to remember that desiredaccessories such as hot water spout, sprayer, a soap dispenser or the like needadditional holes. Of course, many popular pedestal sinks are an all in one sinkand faucet.
HANJOY have 3 holding joint-venture producing plants, separately for Kitchen and Bathroom Faucets, brass fittings and water pumps. These 3 plants are mould main producing factory base. And what’s more, we have more than 20 strategic cooperation factories for different products in sanitary wares and water pumps. The products are mainly exported to Europe and America, Especially to Spain, France, Italy, Poland, Ukraine and Russia.
In HANJOY, there is a full experience and high efficiency team, who are dealing for the producing and exporting every day, such as product drawing, new product creating, product sourcing, packing design, quality control, shipment plan, documents, payment control and financing. Till today, we have built good business relation with the customers from more than 12 countries. For some customers, we are acting as a sole purchase and QC office or producing base in China.
HANJOY is particularly welcome some customers, who will work with us at strategic position. We can be your agent in China, We can mainly work on shipment control and quality control only, HANJOY can offer you very good cooperation conditions. You are welcome to discuss it with us. HANJOY enjoy the growing of all our cooperators.
“Good quality, Best & quick service, Reasonable price” are our three advantages. We are looking forward to build our good cooperation and friendship with all the customers from the world.
The bathroom is often one of the smallestroom in the house, but it ranks second behind kitchen for the number of designand architectural decisions that must be made.
There are a few things you should beconsidered when selecting the perfect bathroom faucet. First, consider the typeof handle you prefer, the style you prefer, the finish you want, therequirement of the lavatory it will be installed in, and at last, consider howmuch you want to spend. The most incisive consideration in choosing a bathroomfaucet is the requirements of not only the sink but the countertop on which itwill be mounted as well. Not only is the number of holes critical, but alsosome sinks such as vessels cannot be drilled at all. It has to be mounted on adeck or through a wall. It is also important to remember that desiredaccessories such as hot water spout, sprayer, a soap dispenser or the like needadditional holes. Of course, many popular pedestal sinks are an all in one sinkand faucet.
HANJOY have 3 holding joint-venture producing plants, separately for Kitchen and Bathroom Faucets, brass fittings and water pumps. These 3 plants are mould main producing factory base. And what’s more, we have more than 20 strategic cooperation factories for different products in sanitary wares and water pumps. The products are mainly exported to Europe and America, Especially to Spain, France, Italy, Poland, Ukraine and Russia.
In HANJOY, there is a full experience and high efficiency team, who are dealing for the producing and exporting every day, such as product drawing, new product creating, product sourcing, packing design, quality control, shipment plan, documents, payment control and financing. Till today, we have built good business relation with the customers from more than 12 countries. For some customers, we are acting as a sole purchase and QC office or producing base in China.
HANJOY is particularly welcome some customers, who will work with us at strategic position. We can be your agent in China, We can mainly work on shipment control and quality control only, HANJOY can offer you very good cooperation conditions. You are welcome to discuss it with us. HANJOY enjoy the growing of all our cooperators.
“Good quality, Best & quick service, Reasonable price” are our three advantages. We are looking forward to build our good cooperation and friendship with all the customers from the world.
Subscribe to:
Posts (Atom)