King Instrument
Flow Meters, Rotameter & Variable Area Flow Meters
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About King Instrument
Founded in 1946 by Lloyd King
King Instrument is a trusted brand for precision measurement and flow control solutions across various industries. Its flow meters and instruments are widely used in sectors such as chemical processing, water treatment, food and beverage, and pharmaceuticals, where accurate measurement is essential for optimal performance and compliance. King Instrument’s products are known for their reliability, durability, and versatility, making them a preferred choice for industrial applications worldwide.
With King Instrument, you can trust in high-quality, accurate flow measurement for your critical processes. Flow meters, also known as Rotameters, from King Instrument Company deliver exceptional performance across a diverse range of industrial, commercial, and specialty applications. King Instrument's product line has continuously expanded to meet the demands of virtually any variable area flowmeter application, ensuring versatility and reliability. The company offers a wide variety of styles, sizes, features, and options, allowing customers to find the perfect rotameter solution for their specific needs,
We are committed to delivering King Instrument’s cutting-edge flow measurement solutions across the USA and internationally. Our services include comprehensive door-to-door shipping, covering all duties and taxes, ensuring seamless delivery to your operations. No matter where you're located in the USA or beyond, we provide reliable solutions to safeguard your industrial assets and enhance operational efficiency.
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King Instrument Categories
King Instrument offers a comprehensive range of flow meters designed for precision and reliability in diverse applications. Their product lineup includes rotameters, variable area flow meters, and other advanced flow measurement solutions suitable for industrial, commercial, and laboratory use.

Flow Meters
King Instrument’s Flow Meters offer high accuracy and reliability for measuring fluid and gas flow in various industries. Designed for ease of use, these meters deliver precise measurements across a range of applications.

Rotameters
King Instrument’s Rotameters are engineered for consistent and accurate flow measurement of liquids and gases. Available in a range of materials and sizes, these meters are ideal for use in laboratory, industrial, and commercial applications.

Variable Area Flow Meters
King Instrument’s Variable Area Flow Meters provide precise flow measurement in both liquid and gas systems. With a wide selection of features and options, they offer flexible solutions for diverse flow measurement needs.
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King Instrument Applications
King Instrument’s products are widely used across various industries that require precise flow measurement and control. King Instrument's rotameters and variable area flow meters are particularly valued for their reliability in measuring the flow of liquids and gases, helping ensure efficiency, safety, and compliance in critical processes.
Overview
In the chemical processing industry, accurate flow measurement is vital for maintaining consistent product quality, optimizing processes, and ensuring safety. King Instrument’s solutions provide reliable flow measurement for various fluids, gases, and chemicals in complex industrial environments. Their flow meters are designed to offer precise, consistent readings, which are essential for managing production processes and meeting industry standards.
Key Applications:
- Flow Monitoring: King Instrument’s rotameters are widely used to measure the flow of chemicals and gases in reactors, pipelines, and tanks to ensure efficient and safe operation.
- Process Control: Accurate flow measurement helps in regulating chemical reactions, maintaining the proper balance of inputs and outputs, and preventing overflow or underflow conditions in chemical processes.
- Batch Processing: Ensuring precise control over fluid flow is critical for batch mixing and chemical blending processes, enabling consistency and minimizing waste.
- Safety and Compliance: King Instrument’s flow meters help chemical processing plants maintain regulatory compliance by providing accurate data to monitor and control chemical flow in hazardous environments.
Overview
In the water and wastewater treatment industry, precise flow measurement is crucial for ensuring efficient operations and compliance with environmental regulations. King Instrument’s flow meters offer reliable performance in monitoring water and wastewater processes, helping to maintain optimal flow control, reduce waste, and improve system efficiency. These instruments provide essential data to manage treatment processes and ensure the proper functioning of treatment plants.
Key Applications:
- Flow Measurement: King Instrument’s rotameters are used to monitor water and wastewater flow through pipes, tanks, and treatment units to ensure that processes are running smoothly and efficiently.
- Chemical Dosing: Accurate flow measurement is critical for dosing chemicals such as coagulants, disinfectants, and pH adjusters in the water treatment process, ensuring proper chemical treatment.
- Pump Protection: By accurately monitoring the flow, King Instrument’s meters help prevent pump cavitation and damage in wastewater treatment plants, improving the longevity and reliability of the equipment.
- Regulatory Compliance: Flow meters from King Instrument assist in meeting regulatory requirements by providing precise data needed to report water usage and wastewater discharge in compliance with environmental standards.
Overview
In the pharmaceutical industry, accurate measurement of flow is critical for maintaining process control and ensuring product quality. King Instrument provides reliable flow meters, such as rotameters, that are essential for monitoring and controlling the flow of liquids and gases used in pharmaceutical production. Their instruments meet the high standards required for precision and consistency, helping pharmaceutical companies maintain strict regulatory compliance and optimal production efficiency.
Key Applications:
- Liquid Flow Monitoring: King Instrument’s rotameters are used for measuring the flow of critical fluids, such as solvents, active ingredients, and water in pharmaceutical production processes.
- Gas Flow Measurement: Accurate gas flow measurement is crucial for controlling air, nitrogen, and other gases used in sterilization and fermentation processes within pharmaceutical manufacturing.
- Sterile Process Control: King Instrument’s products help ensure proper flow rates in sterilization equipment and cleanrooms, maintaining the integrity and safety of pharmaceutical products.
- Regulatory Compliance: The flow meters from King Instrument are essential in maintaining compliance with industry regulations by providing precise and repeatable flow measurements for quality assurance and batch consistency.
Overview
In the food and beverage industry, accurate measurement of flow is crucial for ensuring product consistency, quality, and regulatory compliance. King Instrument’s flow meters, especially their rotameters, provide reliable and precise flow measurement solutions for a wide range of food and beverage applications. These instruments are designed to optimize production processes, enhance product quality, and meet the industry’s rigorous standards.
Key Applications:
- Ingredient and Liquid Flow Measurement: King Instrument flow meters are used to accurately measure the flow of ingredients such as liquids, syrups, and additives, ensuring consistent product formulation and quality.
- Batch Mixing and Blending: Reliable flow measurement is essential during the mixing and blending of ingredients. King Instrument provides solutions that ensure proper flow rates for precise mixing, resulting in uniform products.
- Pasteurization and Sterilization: In food processing, King Instrument flow meters help monitor and control the flow of water or steam in pasteurization and sterilization processes to ensure product safety and compliance with health standards.
- Quality Control and Compliance: King Instrument’s products support quality control by ensuring accurate flow measurements, helping manufacturers comply with regulatory standards for product safety and consistency in the food and beverage industry.
Overview
In laboratories, precise flow measurement is essential for experiments, processes, and maintaining accuracy in testing environments. King Instrument’s flow meters, particularly rotameters, offer accurate and reliable flow measurement solutions that help ensure the integrity of laboratory procedures. These instruments are designed to meet the demanding needs of laboratory environments, providing consistent and precise measurements to support research and development.
Key Applications:
- Gas Flow Measurement: King Instrument’s rotameters are used to measure and control the flow of gases in laboratory experiments, ensuring accurate gas delivery for a variety of testing and research applications.
- Chemical and Liquid Analysis: The flow meters are ideal for monitoring the flow of liquids and chemicals in laboratory setups, providing precise measurements necessary for accurate analysis and maintaining consistency in research results.
- Pilot Plants and R&D Testing: King Instrument’s solutions support pilot plant operations and R&D testing, allowing researchers to optimize flow control for various experimental conditions, ensuring reliable and reproducible results.
- Safety and Compliance: Accurate flow measurement is vital for laboratory safety, ensuring that chemicals and gases are delivered within safe and regulated flow ranges. King Instrument’s products contribute to maintaining safety and compliance in laboratory environments.
Overview
In the HVAC systems industry, accurate flow measurement is critical for ensuring efficient heating, ventilation, and air conditioning performance. King Instrument’s flow meters provide reliable and precise measurement solutions for air and gas flow control, enabling HVAC professionals to optimize system performance, enhance energy efficiency, and maintain comfort levels in residential, commercial, and industrial environments.
Key Applications:
- Airflow Measurement: King Instrument’s rotameters are used to accurately measure airflow in HVAC systems, ensuring the proper ventilation of air and the effective operation of heating and cooling units.
- Gas Flow Control: In HVAC systems, particularly those involving combustion or air quality control, King Instrument’s flow meters monitor and control the flow of gases like natural gas and refrigerants to optimize performance and safety.
- Energy Efficiency Monitoring: By accurately measuring air and gas flow rates, King Instrument’s products help HVAC systems operate more efficiently, contributing to energy savings and reduced operational costs.
- System Balancing: Ensuring proper airflow distribution is critical in large HVAC installations. King Instrument’s flow meters assist in balancing air and gas flow throughout the system, maintaining optimal heating and cooling in different zones of a building.
Overview
In the pulp and paper industry, precise flow measurement is essential for maintaining production efficiency and product quality. King Instrument’s flow meters offer reliable solutions for controlling and monitoring the flow of liquids and gases throughout various stages of pulp and paper production. With a focus on accuracy, King Instrument products help optimize processes while reducing downtime and operational costs.
Key Applications:
- Chemical Injection Monitoring: King Instrument’s flow meters accurately measure chemical additives, such as bleaching agents and sizing chemicals, to ensure optimal chemical dosing in the pulp and paper process.
- Pulp Flow Monitoring: King Instrument’s rotameters monitor the flow of pulp through the system, enabling precise control of pulp consistency and ensuring smooth operation of the pulp preparation stages.
- Water and Wastewater Flow Measurement: Water plays a significant role in the pulp and paper industry. King Instrument’s flow meters provide accurate measurements of water flow for various stages of the process, such as washing, bleaching, and cooling, ensuring consistent water management and minimizing waste.
- Steam and Gas Flow Control: In pulp and paper mills, steam and gases are crucial for heating, drying, and power generation. King Instrument’s flow meters are used to monitor and control the flow of steam and gases to improve energy efficiency and operational control.
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Why Choose 212 Instruments?
Best Prices Guaranteed: We offer the best prices online for a wide range of King Instrument, including Flow Meters, Rotameter & Variable Area Flow Meters ensuring you get top-quality products at unbeatable value.
Efficient Lead Times: While some King Instrument may have specific lead times, we strive to reduce them as much as possible. Our dedicated team ensures transparent communication regarding product availability and delivery schedules, keeping you well-informed at every step so you can plan your operations with confidence and avoid any unexpected delays.
Worldwide Shipping: Whether you're located in the USA or internationally, our extensive shipping network guarantees fast and reliable delivery of King Instrument. We offer door-to-door service, covering all duties and taxes, so your equipment arrives hassle-free, no matter where you are. With a focus on efficient logistics, we ensure timely shipments to meet your operational needs.







