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The Process Technology Blog provides educational and product information for the industrial process control and factory automation markets. Posts will include application information, new product announcements, How-To's, and process control education. This blog is sponsored by Process Technology, Inc. Contact PTI by calling 801-264-1114 or visiting their website at https://process-tech.com.
How the Tideflex Mixing System Keeps Potable Water Tanks Clean and Compliant
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Cutting-Edge Oxygen Sensing: Transforming Process Control Across Key Markets
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Oxygen Flow Made Simple by EPI Thermal Mass Meters
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Thermal Mass Flowmeters: Advancing Efficiency in Industrial Applications
Understanding Thermal Mass Flowmeters
Performance and Advantages
Common Applications
EPI Thermal Flowmeters: The FAT Probe Advantage
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Enhancing Safety and Hydrogen Purity in Water Electrolysis with Advanced Gas and Moisture Analyzers
Download Panametrics' white paper titled "Ensuring Process Safety and Product Quality in Water Electrolysis Using Oxygen, Hydrogen, and Moisture Analyzers" to learn how advanced analyzers enhance safety and ensure hydrogen purity in water electrolysis processes.
Red Lion Rolls Out High-Performance RTUs for Demanding Industrial Applications
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Mining Slurry Valve Application: Optimizing Efficiency, Reliability, and Service Life
Abrasion is one of the most challenging issues for valves when used in mining industry slurries. Slurries often contain abrasive particles, such as sand, gravel, and rock fragments, which can cause significant wear and tear on valve components. Over time, this abrasion can lead to valve failures, leaks, and reduced performance, resulting in costly downtime and maintenance.
To manage the challenge of abrasion, valve manufacturers employ several strategies:
Material selection: Valve components exposed to abrasive slurries are constructed from highly wear-resistant materials, such as hardened alloys, ceramics, or elastomers. These materials can withstand the constant bombardment of abrasive particles and maintain their integrity over extended periods.
Coating and surface treatments: Valve surfaces can be coated with hard-wearing materials, such as tungsten carbide or chrome, to increase their resistance to abrasion. These coatings provide an extra layer of protection and can significantly extend the valve's service life.
Design modifications: Valve designs can be optimized to minimize the impact of abrasive slurries. For example, some valves feature streamlined flow paths that reduce turbulence and minimize the contact between the slurry and valve components. Other designs incorporate replaceable wear parts, such as sleeves or liners, which can be easily replaced when worn without replacing the entire valve.
Proper sizing and selection: It is crucial to select the right valve size and type for the specific slurry application. Oversized valves can increase turbulence and accelerate wear, while undersized valves can cause high-pressure drops and reduced performance. Valve experts can help mining companies select the most suitable valve for their specific slurry application, considering particle size, concentration, and flow rate.
Regular maintenance and monitoring: Implementing a regular maintenance and monitoring program can help detect and address abrasion issues before they lead to valve failures. Regular maintenance may include periodic inspections, cleaning, and replacement of worn components and monitoring of valve performance indicators, such as pressure drop or leakage rates.
Elastomer pinch valves, like those manufactured by Red Valve, are an excellent choice for mining slurry applications due to several key advantages they offer:
Abrasion resistance: Pinch valves feature a resilient elastomer sleeve that can withstand the abrasive nature of slurries. The elastomer material, such as natural rubber or neoprene, can absorb the impact of abrasive particles and resist wear, ensuring a long service life even in challenging mining conditions.
Full-bore design: Pinch valves have a full-bore design, meaning that when fully open, the valve's internal diameter matches the pipeline's diameter. This design minimizes flow restrictions, reduces turbulence, and lowers the risk of clogging or material buildup, which is particularly important in slurry applications.
Gentle handling of materials: The elastomer sleeve in pinch valves gently compresses the slurry, minimizing the shear forces and particle degradation that can occur with other valve types. This gentle handling helps maintain the slurry's consistency and reduces the risk of valve damage caused by sharp or oversized particles.
Simple design and easy maintenance: Pinch valves have a simple yet effective design with few moving parts. This simplicity makes them easy to install, operate, and maintain. The elastomer sleeve is the only component that comes in contact with the slurry, and it is easy to replace when worn without removing the valve body from the pipeline.
Tight sealing: When closed, the elastomer sleeve provides a tight, 360-degree seal, preventing leaks and ensuring reliable shut-off. This tight sealing is crucial in mining applications, where leaks can lead to material loss, environmental concerns, and safety hazards.
Versatility: Pinch valves can handle various slurry consistencies, from thin, watery mixtures to thick, paste-like materials. They can also operate in multiple flow control modes, including on/off, throttling, and even non-slam check valves, providing flexibility in mining process control.
Corrosion resistance: The elastomer sleeve in pinch valves resists abrasion and provides excellent corrosion resistance. This is particularly important in mining applications, where slurries may contain corrosive chemicals or have extreme pH levels that can damage other valve types.
Red Valve, a leading manufacturer of pinch valves, offers a range of valves designed explicitly for mining slurry applications. Their valves withstand the most challenging mining conditions, providing reliable performance and long service life. By choosing elastomer pinch valves from reputable manufacturers like Red Valve, mining operations can benefit from improved process efficiency, reduced maintenance costs, and increased overall system reliability.
And as always, collaboration between mining companies and local valve experts is essential to develop and implement the most effective solutions for each application.
Process Technology, Inc.
https://process-tech.com
801-264-1114
Duckbill Check Valves
Duckbill check valves allow flow in only one direction through a pipe or tube while preventing any backflow in the opposite direction. When fluid pressure is applied from the upstream side, the duckbill flexes open to allow flow. But if pressure comes from the downstream side, the duckbill flaps seal shut to block reverse flow.
Typical applications for duckbill check valves include:
- Preventing sewer and septic tank backflow
- Inline pump protection
- Sprinkler and irrigation systems
- Drainage and flood control
Duckbill valves' simple, passive operation offers reliable backflow prevention without needing manual intervention, a power source, or maintenance. The elastomeric duckbill is the only moving part. Its flexing action allows it to seal around solids, making it resistant to clogging compared to other check valve designs with hinge mechanisms that can jam.
Duckbill valves find wide use across industrial, municipal, and commercial sectors due to their simple and reliable operation, compact size, and low cost compared to mechanical check valves. Some of the most common applications include:
- Wastewater and stormwater management: Duckbill valves are extensively used in sewer lines, septic systems, and stormwater outfalls to prevent backflow of contaminated water during heavy rains or floods. They are less prone to clogging than flap valves.
- Irrigation and agriculture: In sprinkler systems and agricultural pipelines, duckbill valves maintain consistent flow direction and prevent pump prime loss. They also inhibit dirt, rodents, or other foreign materials from entering pipes.
- Marine and aquatic systems: Duckbill valves are used in boat bilge pump discharge lines, live fish holding tanks, and pond aeration systems. Their unobtrusive profile minimizes flow restrictions.
- Industrial processes: In chemical processing, printing, and manufacturing operations, duckbill valves control gases and liquids, vent tanks and pipelines, and isolate pressure gauges and instruments.
Compared to traditional swing check valves or spring-loaded poppet valves, duckbill valves offer several advantages:
- No mechanical hinge or spring to fail or wear out, giving them superior reliability and service life.
- Low cracking pressure and high flow rate due to streamlined design.
- Tight sealing even around suspended solids and minimal leakage.
- A simple one-piece elastomer duckbill is inexpensive to manufacture and easy to replace.
- Various elastomer choices to suit corrosive chemicals, high temperatures, or food grade needs.
Duckbill check valves' versatility, dependability, and low maintenance requirements make them a popular choice across diverse industries for providing economical, trouble-free backflow prevention and fluid control. While not suited for every application, they offer an elegant solution in many common fluid handling scenarios.
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What Are Temperature Control Valves and Temperature Regulators?
Temperature control valves and temperature regulators, often known as TCVs, actively maintain the temperature of a process. They achieve this by regulating the pressure or flow of thermal fluid in various components such as compressors, tank jackets, and heating coils. These devices are essential in processes requiring stable temperatures unaffected by fluctuations in the surrounding environment.
Temperature regulators fall into two main categories: self-actuated and externally actuated. Self-actuated temperature regulators operate independently without the need for an external power source. They use a thermally sensitive material that expands and contracts in response to temperature changes. This expansion and contraction drive the actuator, adjusting the valve's position and altering the flow path of the thermal fluid toward the heating element. This mechanical actuation provides precise temperature control, particularly suitable for applications where the setpoint remains constant and does not require frequent adjustments. Additionally, self-actuated temperature regulators offer a cost-effective solution for effective temperature management. These regulators are also known as self-operated temperature regulators.
Externally actuated temperature control valves often play a critical role in complex control systems, integrating an external temperature sensor and a Proportional-Integral-Derivative (PID) controller. These valves necessitate an external power source for operation. In a typical setup, the operator sets a desired temperature on the PID controller, continuously receiving feedback from the temperature sensor monitoring the process. The PID controller then compares the set temperature with the actual process temperature reported by the sensor. Based on this comparison, it sends an electronic or pneumatic signal to the temperature control valve, instructing it to adjust its position. This adjustment ensures the maintenance of the process temperature at the set point. This type of valve is beneficial in applications requiring frequent adjustments of temperature set points for automation purposes.
How Does the Jordan Valve Mark 80 Series Temperature Regulator Function?
The Jordan Valve Mark 80 Series Temperature Regulator operates independently, eliminating the need for an external power source or costly additional instruments. This self-sufficiency is due to its unique design: the actuator connects to a sensing bulb via a capillary system containing a volatile fluid. When this fluid heats up, it vaporizes, creating pressure within the system. This pressure acts on the diaphragm, prompting the valve to open (in reverse-acting models) or close (in direct-acting models). The Mark 80 Series, featuring a seal welded actuator (SWA), results from extensive research, ensuring the most accurate temperature control. When paired with Jordan Valve's sliding gate valve technology, the Mark 80 regulator achieves superior control. For added versatility, it allows field adjustments of the set point and can accommodate different temperature ranges without removing the valve from its installation.
The Jordan Valve Temperature Regulator Series also presents various self-operated regulator configurations to cater to higher flows, fail-open or fail-close settings, tracing lines, and pilot operations.
Process Technology, Inc.https://process-tech.com
801-264-1114
From Quality Control to Regulatory Compliance: The Power of Process Analytics
In industry, the significance of process analytics is paramount. Various industries, from water treatment and chemical processing to food and beverage production and pharmaceutical manufacturing, rely on it. For these operations, the intricate dance of monitoring and controlling complex process parameters is not just desirable – it's indispensable. The stakes? Optimal process conditions, impeccable product quality, and adherence to environmental and safety regulations.
Core Process Parameters
pH:
A system's measure of acidity or alkalinity plays a pivotal role in many industrial processes. For instance, in water treatment, the correct pH ensures the effectiveness of disinfectants and prevents corrosion or scaling in pipes.
Oxidation-Reduction Potential (ORP):
This parameter measures the ability of a solution to either gain or lose electrons. In water treatment and chemical processing, it aids in understanding the disinfecting power of solutions.
Dissolved and Gaseous Oxygen:
Oxygen levels are crucial in various industries. For example, specific oxygen levels are essential in food and beverage production to prevent spoilage and ensure freshness. Meanwhile, sufficient oxygen levels are necessary for microbial degradation of pollutants in wastewater treatment.
Dissolved CO2:
In beverage industries for example, the concentration of dissolved CO2 is a significant factor in determining the carbonation level in drinks.
Ozone:
Often used as a potent disinfectant in water treatment, monitoring ozone levels is vital to ensure adequate disinfection without creating harmful byproducts.
Conductivity:
This measures a solution's ability to conduct electricity, often indicating the amount of dissolved salts or impurities. In processes like desalination, monitoring conductivity to determine water purity is crucial.
Turbidity:
This refers to the cloudiness or haziness of a fluid. In industries like water treatment, turbidity is a tell-tale sign of the number of particles present, affecting the efficacy of disinfection.
The Need for Accurate Measurement and Regulation
Process analytics isn't merely about knowing the numbers. It's about understanding these numbers and making informed decisions based on them. Here's why:
Maintaining Optimal Process Conditions:
The right conditions are paramount whether brewing the perfect beer or producing a life-saving drug. Even slight deviations can lead to suboptimal outcomes or render a batch useless.
Ensuring Product Quality:
Consistency is vital. For instance, nobody wants a flat soda one day and overly fizzy the next. Accurate process analytics ensures every product meets the required standards every time.
Regulatory Compliance:
Failing to meet established standards can have serious consequences, especially in sectors like pharmaceuticals or food production. Not only can it lead to hefty fines, but it can also endanger consumers' lives.
Process analytics is more than just a set of numbers. It's the backbone of numerous industries, ensuring that processes run smoothly and products meet standards and meeting regulations. As industrial operations evolve, so will the tools and techniques of process analytics, always striving for perfection in every drop, bite, or pill.
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