King Instrument

  • Sale! King sharpening stone with adjustable angle guide showing detailed measurement scale.

    KING 7100

    Rotameter for higher pressure

  • Sale! A floating thermometer for swimming pools with a transparent tube and temperature scale, labeled with the word "king" at the top.

    KING 7200

    Flow meters in acrylic

  • Sale! Wall-mounted industrial thermometer in metal case with vertical temperature scale.

    KING 7310

    Rotameter with protective casing

  • Sale! Rotameter (variable area flowmeter) with a vertical scale measuring the liquid flow, isolated on a white background.

    KING 7330

    Rotameter with threaded or weld connection

  • Sale! Two king variable area flowmeters on a white background, showing vertical and horizontal orientations with measurement scales.

    KING 7430

    Rotameter 65mm & 150mm

  • Sale! Two King brand glass tube rotameters isolated on a white background, shown in different sizes.

    KING 7440

    Rotameter 65mm & 150mm top and bottom connection

  • Sale! A precision King hygrometer, mounted on a metal plate with scale markings, used to measure humidity levels.

    KING 7450

    Rotameter 75mm & 150mm

  • Sale! Two king engine cylinder bores of different sizes on white background, used to measure cylinder bores.

    KING 7459

    250mm scale, high accuracy

  • Sale! A tornfalk brand vertical mechanical flowmeter mounted on a metal gray frame, with a clear tube and black measuring scale.

    KING 7470

    Rotameter with protective case and alarm contact

  • Sale! Variable area metal flowmeter mounted vertically with a scale, used to measure liquid or gas flows.

    KING 7480

    Rotameter threaded or flanged with protective casing

  • Sale! A wall-mounted, tube-style king thermometer that displays a scale from -40 to 120 degrees Fahrenheit.

    KING 7510 / 7511

    Sizes with a choice of 50mm, 65mm, 100mm, 127mm and 250mm.

  • Sale! Two King brand rotameters for measuring gas flow, seen side by side, each with clear tubes, measurements and a floating indicator.

    KING 7520 / 7530

    Many sizes and white screen printed back for easier readability.

  • Sale! Metallic industrial flowmeter mounted on a white background, with a clear central tube with measurement markings.

    KING 7610

    Rotameter fully enclosed within a 304 stainless steel case and offers a poly carbonate shield

  • Sale! Two King flowmeters are shown vertically, with transparent bodies and black measurement markings.

    KING 7650

    Glass tube flow meter with good chemical resistance.

  • Sale! KING 7710

    KING 7710

    316L stainless steel rotameter with 4..20mA transmitter

  • Sale! KING 7720

    KING 7720

    Rotameter in PVC with 4..20mA

  • Sale! KING 7750

    KING 7750

    All welded rotameter in 316L stainless steel

  • Sale! A metal king rotameter mounted vertically, with a black scale with dimensions and a transparent central tube.

    KING 7910

    Hosiery meter rotatable to 360 °c

About King Instrument

Since King Instruments' establishment in 1983, their primary goal has been clear: to manufacture the highest quality rotameters on the market. They started small, operating from a modest 1200 square foot facility with minimal equipment.

Despite their modest beginnings, they launched a product line consisting of 21 model numbers and reached sales of just over $37,000 in their first year.

Over the years, they have undergone significant growth and change. Today, they operate two shifts and utilize state-of-the-art computer-controlled equipment in their extensive 46,000 square foot facility located in Garden Grove, California. They have taken control of their manufacturing process and produce 95% of the 6000 meter components used in their products, including their own borosilicate glass tubing which they call Kinglass. In addition, they have an in-house calibration lab where they perform NIST-traceable calibrations to ISA RP 16.6 standards.

Their product line has been developed to meet the diverse needs of different variable flow meter applications, driven by their commitment to meeting their customers' requirements. Almost all of their products have been developed in response to customer feedback, ensuring exceptional quality and distinctive design.

Have they achieved their initial objectives? They leave that assessment to you. When you are in the market for rotameters, they invite you to consider King Instrument Company. They believe there is no better time than now to experience the benefits of the King range. After all, when it comes to flow - they are instrumental.

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