Sunday, December 27, 2020

How valves affect system efficiency

A common assumption is that the weakest point in any industrial system exists at the valves. This is not always the case. Depending on the selected pipe and fitting materialvalve material and joining method, many valves can uphold the same performance standards as the rest of the piping system.It is a good engineering practice to identify the weakest component in any system when determining the total system pressure rating. Valves utilized in non-metallic systems must always be considered for pressure capabilities in particular, as they can vary by manufacturer.

When working with acidic and/or caustic solutions, increasing the life of a system is vital. Corrosion is the culprit of many system issues, causing premature repairs, costly downtime and even complete replacement. Each of these setbacks results in significant costs and is reason enough for engineers to pursue opportunities to increase system life.Materials that are susceptible to corrosion often experience it at joints. The more system components involved, including fittings and valves, the greater the chance of corrosion plaguing the system.Even if corrosion does not damage a system to the point of needing immediate repairs, it can harm the valves. 

Valves are especially susceptible to both corrosion and degradation of the valve seats. Corrosion creates debris and scale that can make valves more difficult to move, making systems less efficient, or cause significant safety concerns in the event of a failure.Electrochemical corrosion is a specific type of corrosion more often experienced at valves when the line is heat traced and the material is not corrosion resistant.To avoid unnecessary energy consumption costs, industrial systems must optimize fluid dynamics. One way to do this is to minimize pressure drop or head loss.To optimize efficiency and limit energy consumption, plants prefer a valve with a higher flow coefficient. 

Valve manufacturers provide valve flow coefficients for each product.On a macro level, pressure loss in valves is lower for most thermoplastics than metals. CPVC valves, specifically, disrupt the flow in industrial piping systems less than the valves used for metal systems, better maintaining flow rates and efficiency. A few reasons for this include metal’s susceptibility to corrosion, scaling, rust and other mechanisms that reduce pipe, fitting and valve interior smoothness.When it comes to pressure rating a system, the portion with the lowest pressure rating becomes the system’s limiting factor. Oftentimes a valve inserted into the line has the lowest pressure rating, making it the limiting factor to the overall pressure rating of the system.

Monday, December 21, 2020

The use of ball valves in the food and beverage industry

Ball Valve is the valve that can either be turned on or off by opening the valve and closing the valve, respectively. This type of valve uses a hollow, perforated, and pivoting ball to control flow through it. If the handle of the ball valves lies flat in alignment with the flow, then the valve is in an open state. When the handle of the valve is perpendicular, then the ball valve is closed. Hence the confirmation of the ball valve status can be checked easily by looking at the alignment of the ball valve handle. 

Whenever we are going to any online grocery stores and purchase food items likes cereals, cookies, canned fruits, and pastries, you might have wondered how this food must have been processed. This is where ball valves play a crucial role in the food and beverage industries.  Ball valves are flow valves that are quarter turn is used to shut off and control purposes. The ball valves are very easy to operate and can control and maintain high volume, high flow of temperature, and high pressure.

Ball valves are more efficient than traditional butterfly valves that are explicitly used for the circulation of stream water only. Ball valves that are used in food processing industries can be subclassified into two categories. They can be a valve that comes in direct contact with the food and the second that are used in utility services involved in the food industry.Both of these types of Ball valve are regulated, but the one which is in direct contact of food must undergo stringent checks. 

Even a small contaminant in the valve will lead to compromise with product quality and increase the cost of production.These types of ball valves are less in cost and are basically type valve. There are no leakage points in this category of ball valves.These types of ball valves are most common. It has one body joint that has fewer chances of leaks. They can take part in maintenance as well.Three piece ball valves:-These types of ball valves can be disassembled easily for maintenance. The internal parts can easily be swapped.

Tuesday, December 15, 2020

Valve design leads to higher polymerization efficiency

The versatility of plastics, with their low cost and simple manufacturing process, makes plastic one of the world’s most commonly used materials, with an almost infinite range of applications. Since it’s a polymer, one of the most often used processes for plastic production is called polymerization.The polymerization reaction starts with a primary product, a monomer. When triggered by appropriate catalysts, it joins with another monomer, producing a polymer. The nature of the process is simple, though for many plastics manufacturers, the challenge of reaching high efficiency still exists.Sometimes, it only takes more reliable valves to overcome these challenges, allowing the plant to starting producing at its full potential.

Typical polymerization reactors use dozens of , most of which are called into action very infrequently. The function of the valves in polymerization reactors varies, depending on the process stage. They can be used for product conveyance, isolation, gas venting or pressure balancing. But all these applications call for reliable, high-cycle valve operation.Some examples of high-cycle valves used around the reactor include flow control devices, such as product separation block valves, main separation line valves, pressure equalization valves and purge gas valves.Several characteristics of the polymerization process, however, negatively impact valve efficiency and long-term reliable operation.

Polymerization calls for extremely demanding and robust valve performance − from about 100,000 up to 1,500,000 cycles per year, with a stroke time of less than three seconds. And the process is associated with high pressure differences and vibration-affecting devices. Also, the mediums used often contain abrasive elements, while continuous polymerization can lead to polymer growth in some valve parts.The polymer industry employs many different catalysts, and to produce plastics with innovative properties, new catalysts are developed every year. Unfortunately, these newer catalysts often produce more abrasive polymers, lengthening the list of challenges for valves.

An expert can guide you through the diversity of valves capable of overcoming the most troublesome characteristics of polymerization. They can show you how valve details matter and help choose the optimal selection for your specific setup. However, some basic essentials are obvious, regardless of specifics. A metal-seated ball valve design with long-lasting tightness and cycle life is critical for this type of high-cycle application. Polymer-proofing is a good option if you want to make sure polymers do not penetrate behind the seat, seizing your valves. Also, if abrasive catalyst types are used, an anti-abrasive valve capability should be added to your checklist.

Sunday, December 13, 2020

Basic function of pressure relief valve

Pressure relief valves, also referred to as safety relief valves, are triggered to open at a designated pressure and expel fluid until the pressure reduces to an acceptable level. In its operating condition, this pressure relief valve is typically closed until upstream pressures increase to a predetermined set pressure. When that set pressure is reached, the valve opens, and continues to open wider, enabling additional flow as the pressure increases. The valve starts to close again when the upstream pressure drops to a few PSI below the set pressure.A 100-percent pure PTFE Valve Body and Valve Plug are used in the manufacture of the iPolymer Pressure Relief Valve. The single O-ring design enables the user to choose EP, Viton, or Kalrez  according to the flowing media. 

The PRV we offer is factory configured for a pressure between 10 psi and 90 psi.Within the above-mentioned pressure range, this PTFE pressure relief valve is fully adjustable by the means of a simple adjustment to the upper Socket Hex Adjustment Screw and then a simple lock-in-place with the associated locking nut. The three upper housing and lower base configuration options available with our PRV are.Polyvinylidene Fluoride, Polypropylene, and Anodized Aluminum.Diaphragm valves are also called membrane valves and consist of a valve body, diaphragm, a minimum of two ports, and a seat which is closed by the diaphragm. Diaphragm valves are manufactured as pneumatic or automated devices. They are often used as shutoff valves within process systems for the biotech, food and beverage, and pharmaceutical industry sectors.

Our PTFE diaphragm valves offer the significant benefit of having a high cycle life, which enables them to stay operational at an optimum level longer than other types of valves manufactured from other materials. When it comes to diaphragm valves used in the pharmaceutical industry, PTFE offers several distinct advantages.This benefit enables PTFE diaphragm and membrane valves to operate safely with a range of chemical compounds. This makes these valves highly versatile and useful for a variety of experiments, tests, and manufacturing procedures.

These properties are ideal and crucial for preventing wear and tear in pharmaceutical manufacturing conditions. The benefits include reduced downtime from maintenance operations and lower part replacement costs.PTFE possesses low surface adhesion as opposed to other materials that may develop issues related to surface adhesion. As a result, PTFE diaphragm and membrane valves do not stick to powders or pills in pharmaceutical applications. In addition, coagulation is minimized when working with liquids.


Thursday, December 10, 2020

Structure composition and characteristics of plunger valve

The plunger valve is composed of valve body, valve cover, valve stem, plunger, orifice frame, sealing ring, hand wheel and other parts. When the handwheel rotates, the valve stem drives the plunger to reciprocate up and down in the middle of the hole frame to complete the opening and closing function of the valve. In the valve, an interference fit is adopted between the plunger and the sealing ring. By adjusting the flange bolts in the gland, the lateral force generated by the compression of the sealing ring is sealed with the hole surface of the valve body and the outer circle of the plunger, thereby ensuring the valve.

The airtightness prevents internal and external leakage. At the same time, the valve opening torque is small, and the valve can be opened and closed quickly. With the continuous development of valve technology and the continuous expansion of valve application fields, corresponding valve standards are becoming more and more indispensable. Valve industry products have entered a period of innovation. Not only the product categories need to be updated, but the internal management of the enterprise also needs to deepen reforms in accordance with industry standards. Therefore, it is necessary to make full use of existing standards while looking forward to the future. 

And to research new standards and new systems that can be used in the future, so as to promote the higher-level development of valve technology. In the future, the valve industry will develop in two main directions: one is to develop from a single variety to multiple varieties and specifications; the other is to develop in the direction of energy saving. The closing of the flange plunger valve is composed of a stainless steel plunger, two upper and lower elastic sealing rings and a metal partition frame.

 The sealing effect is achieved by the close cooperation of the plunger and the sealing ring. The plunger is inserted in the two sealing rings. The sealing area is much larger than that of ordinary shut-off valves; when the plunger valve is switched on and off, the plunger moves slowly in the sealing ring, and the contact surface is almost not worn. When closed, the plunger is inserted into the lower sealing ring to cut off the flow path; when opened, the plunger is separated although The lower sealing ring, but still hidden in the upper sealing ring, keeps it isolated from the outside world to prevent leakage.

Sunday, December 6, 2020

How does the exhaust valve perform exhaust work

Exhaust valves are more commonly used in heating systems or HVAC systems. When the water is heated, hydrogen or oxygen will be released, which will cause a lot of adverse effects, damage or reduce the heating effect. If these gases cannot be discharged in time If it does, it will have a lot of adverse effects, so the use of exhaust valves is indispensable in the pipeline system, and is widely used in boilers, oil and gas, and water supply and drainage pipelines. The exhaust valve is often installed at a high point or elbow to remove excess gas in the pipeline, improve pipeline efficiency and reduce energy consumption. 

If the hot gas inside the pipeline is hot, it may cause oxidation and corrosion of the pipeline and hot water circulation When it is not smooth and unbalanced, it will cause local uneven heat dissipation, local overheating or local heat loss, noise when the pipeline is running with air, and the vortex phenomenon caused by the circulating pump. Exhaust When there is gas overflow in the system, the gas will climb up the pipeline and gather at the higher point of the system rating. When the exhaust valve is installed, it is also at a higher point. The gas enters the upper part of the exhaust valve. When the gas increases and the pressure rises, the gas will cause the water level in the cavity to drop. As the water level drops, the air vent opens to perform exhaust work. 

The exhaust valve is used in the main heating system or heating system, because there is always a certain amount of air dissolved in the water, the solubility of the air will be reduced due to the increase in temperature, so that the gas gradually escapes from the water during the water cycle. It is separated to form bubbles or gas columns. Therefore, exhaust valves are widely used in boilers, oil and gas, and water supply and drainage pipelines. They can remove excess gas in the pipeline, improve the efficiency of pipelines and roads, and reduce energy consumption. If it is discharged, it will cause undesirable consequences and cause oxidation and corrosion of the pipeline. 

Exhaust valves are widely used. The more common ones are float type exhaust valves, float lever type exhaust valves, and cylinder type exhaust valves. Float type exhaust valves have a small exhaust volume and are only suitable for exhaust When the air volume is small; the cylinder type exhaust valve can only discharge a section of air when exhausting, and can not perform continuous exhaust; the cylinder type exhaust valve can discharge at a high speed regardless of pressure or no pressure. The exhaust valve plays an indispensable role in the pipeline.

Wednesday, December 2, 2020

Frequently used bending methods for FRPP pipes in production

Bending is performed on a vertical or horizontal pipe bending machine. According to its process characteristics, it can be divided into three types: cored bend, coreless bend and top pressure bend. The cold work bending of pipes mostly adopts the bending method. In addition, simple pipe bending devices are often used for manual pipe bending in production, which also belongs to the bending method. 

Due to the low manufacturing cost of this type of pipe bending device and the convenient adjustment of the use page, it is suitable for small batch production without pipe bending equipment. Push-bending is bending processing on a general press, liquid stacker or pushing machine. The frpp pipe is mainly used for bending elbows. According to the characteristics of the push-bending process, it can be divided into two types: cold push-bending pipe bending and core-bending hot-push bending pipe. The cold push elbow is to press the tube blank into a mold with a bending cavity at room temperature to form a pipe elbow. 

The mandrel-type hot-pushing elbow is under the action of thrust and the resistance of the horn mandrel, it is heated while being pushed, so that the pipe is broken and produces circumferential expansion and axial bending deformation, so that the small diameter tube blank can be made into a relatively small diameter tube. Elbow with large diameter. Bending is the use of molds or molds to bend the tube blank on a hydraulic press. The press-bending method can be used to bend pipe fittings with straight sections and bend elbows. At present, press-bending is used to press elbows, and it has been widely used in the production of elbows. 

Roll bending is the bending process by tube cutting while driving the power rollers. The rolling method and the working principle of the rolling machine are basically the same as the sheet rolling. The difference is that the rollers used for tube bending have a working surface that matches the shape of the curved tube blank. By changing the interval of the rollers, it can bend with any radius of curvature. There is a certain limit to the bending radius of the bending square hair. It is only suitable for thick-walled frpp pipe fittings with a large curvature radius, and it is more convenient to bend ring or spiral bend pipe fittings.

What are the various types of ball valves

 A reduced port Ball Valve, also commonly referred to as a standard port valve, has the internal diameter of one pipe size lower.It is espec...