Why Choose Us
Powerful R&D Team
With an autonomous R&D team and a professional technical staff, our company strictly adheres to quality requirements in production and R&D processes for ensuring stable product quality.
OEM Serve
We also offer OEM services and customize products according to the specific needs of our clients, fully meeting all clients‘ requirements.
Professional Solutions
We provide our clients with fast and efficient hose, pipe fitting and valve manufacturing services and comprehensive solutions for piping systems through professional approaches.
Quality Control
Products produced under strict quality control require the inspection department to conduct quality inspection of the goods in the workshop.
What is Valve
A valve is a device or natural object that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically fittings, but are usually discussed as a separate category. In an open valve, fluid flows in a direction from higher pressure to lower pressure. The word is derived from the Latin valva, the moving part of a door, in turn from volvere, to turn, roll.The simplest, and very ancient, valve is simply a freely hinged flap which swings down to obstruct fluid (gas or liquid) flow in one direction, but is pushed up by the flow itself when the flow is moving in the opposite direction. This is called a check valve, as it prevents or "checks" the flow in one direction. Modern control valves may regulate pressure or flow downstream and operate on sophisticated automation systems.
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Power: Manual. Type: Temperature Regulating Valves, Radiator Valves. Structure: Regulating.
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Brass Nickle Plating Radiator Valve
Temperature of Media：Medium Temperature, Normal Temperature. Power：Manual. Media：Gas. Port
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Floor Heating Room Brass Radiator Valve
Angled/Straight TRV：Angled TRV. Colour：White & Chrome. Product Length：15 mm. Product Type：Angled
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Refined Forged Brass Radiator Valves
Product Name: Chrome Plated Radiator Valve. Material: Brass. Use: Water Supply,Water Drainge.
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Normal Pressure 3 Way Thread Connection Radiator Valve
Product Name: Radiator Valve. Pressure：Normal pressure. Temperature of Media：Normal Temperature.
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3 Way Brass Thermostatic Control Valve
Product Name: Radiator Valve. Material: Brass. Port Size: DN15. Woking Temperature: -30℃~120℃.
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Brass Forged Temperature Control PPR Radiator Valve
Product Name: Radiator Valve. Material: Brass. Port Size: DN15. Woking Temperature: -30℃~120℃.
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Brass Underfloor Heating Manifold Valve For Hot Water Supply
Media：Water. Standard or Nonstandard：Standard. Material：Brass. Technique：forged. working
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8-Port High Pressure Heater Manifold Valve
Product Name: Manifold Valve. Connection End: Thread. Working pressure: 16 Bar. Female thread
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Floor Heating System Brass External Thread Exhaust Valve
Product Name：Exhaust Valve. Length：5cm/ customized. Connection：3/4male thread. Thread：NPT 15MM.
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Fluid Electric 2 Inch Valve Water Brass Solenoid Valves
Product Name：Solenoid Valve. Operating type: normally closed , normally opened. Body material:
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Copper Coil Winding Opening And Closing Stainless Steel Steam Solenoid Valve
Product name：Solenoid valve. Work Style：Normally Closed. Orifice：16mm. Working medium：Air Water
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Easy Assembly
Custom valves are easy to assemble. The valves and fittings come as one component so it's easier to put the whole thing together. A single component means it takes less time to assemble the unit because there aren't multiple fittings and valves to put together. Custom valves can be used in various industries related to instrumentation, semiconductor applications, and hydraulic and pneumatic applications.
Safety
Custom valves put safety first. In many manufacturing industries (perhaps including your own), workers operate extremely closely to fittings that have hazardous chemical fluids. You can prevent leakages with custom industrial system valves. They block the reverse flow and stop harmful chemicals from blending. These valves perform more effectively because there's no leakage. Fluids at different temperatures can pass through them without causing any damage or corrosion.
Efficiency
Every industry uses different fluids and materials. These are transferred through the valves and fittings that are then subjected to varying temperatures and pressures. Custom-made valves and fittings are designed to withstand rapid changes in pressure and temperature. Custom valves are thereby more efficient than their standard counterparts.
Reduced Space
Standard-sized valves and fittings require many components for fixtures. They use more space. Custom-made valves, on the other hand, use the least amount of space. The entire assembly can be designed and made so that the end product has minimal components. Fewer components mean there's less to pay for than for standard valves and fittings.
Less Contamination
Foreign material in the valves and fittings can compromise the whole system's performance. The end product won't be up to snuff as a result. Custom valves eliminate potential leak points. There are thus fewer chances of contamination. Particles in fluids can contact and stick to surfaces. Abrasion, leakage, and other problems can then occur. Prevent those contamination-based mishaps with specialized valves.
What are the Applications of Valve
Power industry
Many power plants generate electric power in steam plants that use fossil-fuel and high-speed turbines. Gate valves are the top choice for power plant on/off applications. Although other valves like the Y-pattern globe valves are sometimes used.Another type of valve gaining popularity in this industry, and in fact are making great inroads in a formerly linear-valve-dominated industry, are high-performance critical-service ball valves.
Water works
Water distribution requires relatively low-pressure levels and ambient temperatures. For this reason, different valve design elements that wouldn't be found somewhere like a power plant, can be used for water works.As the water temperature is ambient, it allows for the use of rubber seals and elastomers that aren't suitable anywhere else. These types of materials allow water valves to be equipped tightly in order to seal off drips.
Offshore industry
Offshore production facilities and oil rigs have piping systems which contain a plethora of valves. These are built to a variety of specifications in order to handle all the flow control challenges.The arterial heart of an oil production facility is the gas or oil recovery piping system. This system isn't always on the platform itself; the production system often operates at depths of 10,000 feet or more.
Wastewater
Wastewater lines collect all the waste solids and fluids and direct them to the sewage treatment plant. Treatment plants feature low pressure piping and valves to carry out their work, and in many cases, the requirements for wastewater valves are much more lenient than the clean water requirements.Check valves and iron gate are the most popular choice for this type of service, and the valves are built in accordance with AWWA specifications.
Oil and gas production
Gas and oil wells and their production facilities use many heavy-duty valves. Oil gushing hundreds of feet in the air are no longer like to occur, it does illustrate well the pressure of underground gas and oil.This is why Christmas trees or well heads are placed at the top of a well's long string of pipe. The combination of valves and special fittings are able to handle pressure upwards of 10,000 psi. it's rare this kind of pressure is found on land anymore, but they are quite often found on deep offshore wells.
Pipelines
While underground, pipelines are usually made conspicuous by signs, to prevent people digging or, if the pipe's underwater from dropping an anchor in the wrong place.Many important valves are used in these pipes: for example, emergency pipeline shutoff valves are found at specific intervals in accordance with codes and law. An emergency valve can isolate a section of pipeline for maintenance or for a leak.
Types of Valve
Ball Valves
Because of their excellent operating characteristics, ball valves are used for the broadest spectrum of isolation applications and are available in a wide range of sizes and materials and are available in full fl ow and full through conduit. Advantages-quick acting, straight through fl ow in either direction, low pressure drop, bubble tight shut off & operating torque, easily actuated. Disadvantages-temperature limitiations on seating material, long“relative”face to face dimension.
Butterfly Valves
The butterfly valve derives its name from the wing-like action of the disc which operates at right angles to the fl ow. It's main advantage is a seating surface which is not critical. It is designed for fl ow isolation. The disc impinges against a resilient liner to provide bubble tightness with low operating torque. Compact and with a simple construction, butterfly valves facilitate easy pipe arrangement. Due to disc, they have slightly reduced fl ow characteristics. Advantages-quick acting, good regulating characteristics, compact & light, low pressure isolation. Butterfly valves are simple, reliable and range in size from 40mm to 1000mm and beyond. They can be controlled by a notched lever, handwheel as well as by pneumatic or electric actuator.
Globe Valves
Globe/Stop Valves:-The flow path through globe valves follows a changing course, thereby causing increased resistance to flow and considerable pressure drop. Because of the seating arrangements, globe valves are the most suitable for throttling flow, however avoid extremely close throttling when the repeatable pressure drop exceeds 20%. Close throttling creates excess noise, vibration and possible damage to valves and piping. Consult us for special service valve solutions. The valve is named after is globular body.
Gate Valves
Wedge Gate Valves:-Commonly used in industrial piping for stop or isolating – to turn on and shut off the flow as opposed to regulating flow. Gate valves are named from the gate-like disc which operates at a right angle to the path of the flow. Gate valves are general service valves that can be made in a broad spectrum of sizes using a variety of different materials. Wedge gate valves are metal seated but are also available with resilient seat insert if drip tight shut off is required.
Plug Valves
Plug valves are valves with cylindrical or conically-tapered “plugs” which can be rotated inside the valve body to control flow through the valve. The plugs in plug valves have one or more hollow passageways going sideways through the plug, so that fluid can flow through the plug when the valve is open. Plug valves are simple and often economical.
Components of Valve
Valve Body
The valve body not only houses other valve parts including the disk and seat but it also is the main pressure-retaining part of the valve. It is also where fluid passes through the valve as both ends of the valve body are connected with piping. The ends can either be threaded or flanged or finished with butt-welding types that depend on the size and pressure of the piping system. Valve bodies come cast or forged in a variety of materials including cast steel, stainless steel, and alloy steel depending on the requirements of the valve as a whole.
Bonnet
The bonnet is the second pressure-retaining component of a valve and is also referred to as the cover. It is connected to the valve body to create the valve enclosure. In the case of globe, diaphragm, gate, or stop check valves, it has an opening where the valve stem passes through and provides access to the internal parts of the valve when maintenance is needed.
Stem
The valve stem's purpose is to transfer the required motion to either the disc, plug, or the ball in order to open and close the valve. It is connected to the valve actuator, lever, or handwheel at one end and the valve disc at the other end.In a gate or globe valve, the stem uses the linear motion of the disc to open or close the valve while in plug, ball, and butterfly valves, the disc is rotated to open or close it.
Disc
The disc is the part of the valve that either allows or stops the flow, depending on where it's positioned. A valve disk can be forged, fabricated, or cast.
Seat
The seat is one of the main parts of the valve that directly affects the rate at which the valve leaks and is an integral part of the valve body. Valves can have one or more seats depending on the type of valve. For example, a gate valve has two seats, one that sits on the upstream side and the other on the downstream side.
Trim
Valve trim is the collective term for the removable or replaceable internal parts that come into contact with the flow medium. These parts include the valve seat, disc, glands, spacers, guides, bushings, and internal springs.
Common Metal Types used in Valve Manufacture
Aluminum
A non-ferrous metal, very lightweight, approximately one-third the weight of steel. Aluminum exhibits excellent atmospheric corrosion resistance, but can be very reactive with other metals. In valves, aluminum is mainly used as for exterior components such as a hand wheels or identification tags.
Copper
Among the most important properties of wrought copper materials is their thermal and electrical conductivity, corrosion resistance, wear resistance, and ductility. Wrought copper performs well in high temperature applications and is easily joined by soldering or brazing. Wrought copper is generally only used for fittings.
Bronze
One of the first alloys developed in the Bronze Age is generally accepted as the industry standard for pressure rated bronze valves and fittings. Bronze has a higher strength than pure copper, is easily cast, has improved machinability, and is very easily joined by soldering or brazing. Bronze is very resistant to pitting corrosion, with general resistance to a wide range of chemicals.
Silicone Bronze
Has the ductility of copper but much more strength. Silicon bronze has equal or greater corrosion resistance to that of copper. Commonly used as a stem material in pressure-rated valves, silicon bronze has greater resistance to stress corrosion cracking than common brasses.
Aluminum Bronze
The most widely accepted disc material used in butterfly valves, aluminum bronze is heat treatable and has the strength of steel. Formation of an aluminum oxide layer on exposed surfaces makes this metal very corrosion resistant. Not recommended for high pH wet systems.
Brass
Generally good corrosion resistance. Susceptible to de-zincification in specific applications; excellent machinability. Primary uses for wrought brass are for ball valve stems and balls, and iron valve stems. A forging grade of brass is used in commercial ball valve bodies and end pieces.
Process of Valve
Order and Design
Industrial valve production is the process of producing a high-quality industrial valve. This involves handcrafted components. Once a valve has been designed and approved by the customer, it is time to place an order for it. After a customer has approved a design, the provider places an order for it, and a predetermined deposit is made. Once the order is placed, the manufacturing department starts sourcing materials and raw materials.
Inventory
Once the order is placed, the next step is to look for raw materials. You need to manufacture different parts of the valves, so different materials are needed. You can look for the materials in inventory. If the materials are not available in inventory, you need to procure them from suppliers.
Completing the Checklist
After collecting all the raw materials, the manufacturing team has to create and checklist and check whether all the essential materials are present to start the production process. Apart from that, the quality assurance team will also check the quality of the materials that are going to be used to manufacture valves.
Production Process
The production process of industrial valves involves the manufacturing of the valve bodies, stem, and seat. The casting method is used to produce these parts of the valve. Some manufacturers also use a forged method that involves cutting and forging, trimming, sandblasting, machining, and surface treatment. The valve bodies can be made of a single piece or are cast using molds or cores. Modern casting processes use a core to produce parts with complex inner cavities.
Assembly
In the manufacturing process, it is essential to follow proper procedures for valve assembly. The major components of the industrial valve should be cleaned and assembled separately. After completing the production, the parts need to be assembled to create a complete valve. The process of the valve assembly is generally carried out with the body of the valve serving as a reference part.
Pressure Test
After assembly, the valves have to go through a pressure test. The most basic pressure test for industrial valves is the hydrostatic pressure test. The test involves partially opening the valve and applying a hydrostatic pressure that is 50 percent higher than its rated working pressure. The valve's sealing surface must remain leak-free, and the applied pressure cannot drop below its rated working pressure.
Inspection and Quality Control
The last step in industrial valve manufacturing is inspection and quality control. All the valves need to be inspected to make sure there is no leakage or error. Industrial valve manufacturers should take inspection and quality control seriously. A QA is appointed to inspect the quality of the end product.
Cleaning
Picture your valves as brave warriors fighting against the forces of dirt, debris, and mineral deposits. Over time, these contaminants can accumulate and wage war on your valve's performance. But fear not, for proper cleaning is here to save the day! Using suitable cleaning agents recommended by the manufacturer, gently remove any gunk or buildup that has taken refuge within your valves. Pay special attention to valve seats, internal passages, and seals, ensuring they are free from obstructions. This thorough cleaning will prevent clogs, maintain optimal flow, and keep your valves performing at their best.
Lubrication
Just like a well-oiled machine, valves need proper lubrication to ensure smooth operation and reduce the wear and tear on their moving parts. Lubricants act as the secret sauce that minimizes friction and keeps those components gliding seamlessly. Applying lubricant to valve stems, seals, and other moving parts not only prevents them from getting stuck or jammed but also extends their lifespan. It's like giving your valves a spa treatment, pampering them with the right lubricant to keep them operating like well-oiled champions.
Storing
If you have purchased some valves but do not intend to use them for a period of time, then it is important that you have a clean space where you can store them.it is imperative to store them in a place that is protected from the weather, dirt, etc. Additionally, it is best to store them with a protective covering to help guard against bacteria and dust.this goes back to the previous point of keeping them clean and contaminant-free.
Leak Inspecting
In the world of valves, leaking is a problem. Well, in the world of many things leaking is a problem. Anyways, as soon as you detect leakage you should go into sherlock holmes mode and determine what the root cause is.it is not always the valve that is the problem so it may be necessary for you to inspect the pipes, connectors, or other pieces of the infrastructure. However, if it is the valve, it is crucial to determine what the problem is and fix it immediately.
Our Company
Xi'an Changxin Hardware Co.,Ltd. was established in 2010, who is a leading supplier and manufacturer of flexible hoses, faucets, bathroom accessories,valves,pipe fittings and sanitary valves & fittings in China. It is well known in local market and overseas because of exporting their products to more than 80 countries with high quality products and thoughtful services.The company pays attention to every detail of the product from sample drawings to finished products, and carefully incubates every innovative idea. Our products are produced under strict quality control. The inspection department is required to conduct quality inspection of the goods in the workshop. Water testing, gas testing, and pressure testing are our common tests to ensure high-quality products and ensure that customers can cooperate with us without any worries.
FAQ
Q: What is a valve in engineering?
Q: What makes a valve a valve?
Q: What is ball valve used for?
Q: What is the difference between a ball valve and a regular valve?
Q: What is the difference between a ball valve and a stop valve?
Q: Why is it called a ball valve?
Q: Are ball valves better?
Q: What is a ball valve also known as?
Q: What are the disadvantages of ball valves?
Q: Do ball valves have a direction?
Q: Which is better ball valve or plug valve?
Q: Are all ball valves the same?
Q: What type of valve is a ball valve?
Q: What is the difference between a ball valve and a pinch valve?
Q: What is the advantage of using a ball valve over a gate valve?
Q: Can I use ball valve for water?
A water ball valve is a shut-off valve that regulates water flow. A hollow ball inside the valve rotates to control the flow of water. The ball valve also opens and closes using a handle attached to the valve.Ball valves may be the most reliable valve and are commonly used for main water shut offs. Similar to gate valves, ball valves should be all the way open to allow the full flow of water or all the way closed to restrict all water from flowing.
Q: What are 3 way ball valves?
Q: Is a ball valve linear or rotary?
Q: Are all ball valves full port?
Q: What is the flow direction of a ball valve?
