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In Memory Of Our Founder Clyde King

We are sad to announce that our founder and President, Clyde King, passed away on January 14, 2023.  Clyde started King Instrument Company in 1983 and had a goal to “revolutionize the flowmeter industry”.  We believe he succeeded. Clyde impacted many lives along the way with his ideas, products, business sense and generosity.  In addition, he was a great husband, father and friend. We will continue to produce quality products in his honor.  And we will celebrate out 40th anniversary this year!  When it comes to flow, we will always be instrumental.

The Finest Rotameters Available

American Made Since 1983



More Styles, Sizes, Features & Options

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Stainless Steel Tube Flowmeters

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Borosilicate Glass Tube Flowmeters

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Acrylic, Polysulfone & PVC Tube Flowmeters

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King Rotameters Provide Flow Measurement Assurance

King’s focus is on using proven technology and longstanding methods to build the most accurate, versatile, and economical rotameters possible. This specialization has allowed King to be a customer-focused provider of one of the most comprehensive lines of standard and specialized variable area flowmeters anywhere in the world today.
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Need Help? Visit Our Meter Selection Guide

If you need accurate, repeatable, rotameters—delivered on time to keep you operating under budget—we are here to help. Visit our meter selection guide or call 714 891-0008 for help in selecting the correct meter for your application.

Meter Selection Guide

King Instrument Company Operations Update

We are fully operational and do not anticipate any disruption to our capacity to deliver products. However, we are experiencing supply chain issues that may affect lead times of certain flowmeter models.

ISO 9001:2015 Certified

King Instrument Company has been certified by NSF – ISR to be in conformance to the internationally accepted ISO 9001:2015 Quality Management System standard.

Achievement and maintenance of this certification speak of our ongoing commitment to Customers to the delivery of quality products - on-time and hassle-free.

We expect our focus on continuous improvement of products, services, and our relationships to translate to long-lasting benefits for our Customers, Suppliers, and Employees. View our Certificate

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We Believe In Responsible Engineering And Manufacturing

We support engineering and manufacturing practices based on socially - responsible supply chains, locally and globally. Our tungsten and tantalum components are manufactured from Conflict-Free mineral sources. Contact Supplier Quality Management roland@kicflow.com

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Environmental and Sourcing Policy

King Instrument Company of Garden Grove, California believes it has a responsibility to protect and care for  the environment in which we operate. We are committed to improving environmental performance across our business activities and encourage our business partners and wider community to join us in this effort.
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