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Flow Indicator

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Flow Indicators

Flow indicators are devices that provide a visual indication of the flow status in a system. These devices are essential for monitoring and controlling fluid movement in a wide range of applications, from industrial processing to HVAC systems.

The simplicity and versatility of flow indicators make them an invaluable part of fluid handling systems. They allow for quick verification of flow for maintenance checks, troubleshooting, and process control. Whether used for confirming flow presence, direction, or relative flow rate, flow indicators offer a straightforward solution for ensuring system integrity and performance.

DA
Heavy-Duty Sight Flow Indicators

Flap, Rotor, or Drip Indication | SS, Cast Iron, or Cast Steel | Up to 580 PSI | 1/4"...2" NPT | 1/2"...8" ANSI

Starting at $382
DA - All-Metal Sight Flow Indicators - Flap, Rotor, or Drip Indication
Size Range
1/4"... 2" NPT, 1/2"... 8" ANSI Flange
Connection Type
NPT Thread or ANSI Flange
Maximum Pressure
230 PSIG (Optional 360 PSIG or 580 PSIG)
Maximum Temperature
250 or 300°F, Depending on Model (Optional 530°F - 260 °C)
Media Category
Liquid
    Sight Glass with Flap, Rotor, or Drip Tube
    Cast Iron, Cast Steel, or Stainless Steel Body
    Soda-Lime or Borosilicate Glass Windows
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DAA
Sight Flow Indicator with Self-Cleaning Mechanism

Made in the USA | Twist to Clean | With or Without Rotor | Up to 150 cSt | Up to 230 PSI | Brass or SS | 1/4"...1-1/2" NPT

Starting at $221
Fast Delivery
DAA - Self-Cleaning Sight Glass/Rotor Flow Indicator, Easy Maintenance
Fittings
¼"...1½" NPT Thread
Body Material
Brass or SS, Borosilicate Glass
Max. Pressure
232 PSIG
Max. Temperature
212 °F (100 °C)
Viscosity Limit
150 cSt Max.
Media Category
Liquid
    Cleaning Mechanism for Ease of Maintenance
    Universal Mountablity
    Available With or Without Rotor
    Made in the USA
    Quick Delivery
    BABA (Build America, Buy America) complaint
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DAF
Low-Flow Paddle Wheel Flow Indicator

Made in the USA | Quick Delivery | For Liquids | as Low as 0.5 GPH | up to 230 °F | up to 235 PSIG | Brass, SS, or Polysulfone | Rotatable During Operation

Starting at $357
Fast Delivery
DAF - Paddle-wheel Flow Indicator for Liquids - Low Min. Flow Indication
Flow Range
0.5...1.6 GPH to 80...2380 GPH
Fittings
1/8"...1½" NPT Thread
Body Material
Brass, SS, Polysulfone
Max. Pressure
235 PSIG (Model Dependent)
Max. Temperature
230 °F (110 °C) (Model Dependent)
Media Category
Liquid
    Clearly Visible Flow Indication
    Low Minimum Indicated Flow
    Rotatable While in Operation (Except for Material Combination IV)
    Applicable to a Wide Variety of Compatible Medias
    Made in the USA
    Quick Delivery
    BABA (Build America, Buy America) complaint
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DAI
Industrial Sight Flow Indicator

Rotor, Ball, Flap, Chain, No Indication | Rugged Industrial Build | Up to 580 PSI | Up to 500° F | NPT or ANSI Connections

Starting at $474
DAI - Heavy-Duty Flow Indicators - Paddle-wheel, Ball, Flap, or Chain
Connections
1/2"...3" NPT Thread, 1/2"...6" ANSI Flange
Materials
Carbon Steel, Stainless Steel, PVC, PP, PVDF
Internal Indicators
Rotor, Ball, Flap, Chain, None
Media Category
Liquid
    Rugged Industrial Build
    A Variety of Indication Options
    Soda Lime or Borosilicate Glass
    Universal Mounting for Rotor, Ball, No Indication Models
    Vertical Mounting for Flap Models and Horizontal for Chain Models
View Full Product Info
DAZ
Referencing Flap Flow Indicator

For Liquids | Water or Oils | Referenced Indication Range via Relative Scale | up to 230 PSIG | up to 390 °F | Glass Windows on Both Sides

Starting at $775
DAZ - Referencing Flap Flow Indicator for Liquids
Size Range
1/2"... 1" NPT
Connection Type
NPT Thread
Maximum Pressure
230 PSIG
Maximum Temperature
212 °F (110 °C) (Water) or 390 °F (200 °C) (Oil)
Body Material
Red Brass w/Soda Lime Glass Windows
Media Category
Liquid
    Referenced Indication Range via Relative Scale (Water/Oil)
    Durable Stainless Steel Flap/Scale
    Large Glass Windows on Both Sides
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DIG
Paddle Wheel Flow Indicator

Made in the USA | For Liquids | up to 21 GPM | up to 230 PSIG | up to 176 °F | 1/8" to 1" NPT | Brass, SS, or Polypropylene

Starting at $191
DIG - Rotating Vane Flow Indicator
Flow Capacity
0.13...3.2 GPM to 0.79...21 GPM
Fittings
1/8"...1" NPT Thread
Housing
Brass, Stainless Steel, Polypropylene
Max. Pressure
230 PSI
Max. Temperature
176 °F (80 °C)
∆P at Max. Flow
14.5 PSI
Media Category
Liquid
    Clearly Visible Flow Indication
    Choice of Three Housing Materials
    Non-Metallic (All Plastic) Version Available
    Made in the USA
    BABA (Build America, Buy America) complaint
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DIH
Rotating Vane Flow Indicator

Made in the USA | Compact Size | Clear Indication | Up to 230 PSI | NPT Connections | 0.05...13.2 GPM

Starting at $248
DIH - Rotating Vane Flow Indicator
Flow Capability
0.05...0.13 GPM to 0.26...13.2 GPM
Fittings
3/8" NPT Thread, 1" NPT
Housing
Brass, Stainless Steel, POM
Max. Pressure
230 PSI
Max. Temperature
176 °F (80 °C)
∆P at Max. Flow
14.5 PSI
Media Category
Liquid
    Compact Size
    Clearly Visible Flow Indication
    Choice of Three Housing Materials
    Made in the USA
    BABA (Build America, Buy America) complaint
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DKB
Flow Indicator with Ball

Made in the USA | Liquid or Gas | 85 PSI | NPT Thread | Up to GPM | Up to 88 SCFM

Starting at $137
Fast Delivery
DKB - Flow Indicators with Ball
Water Ranges
0.014...4.0 GPM to 0.047...27.0 GPM
Air Ranges
0.0.11...14 SCFM to 0.32...88 SCFM
Max. Pressure
85 PSIG
Max. Temperature
250 °F (120 °C)
Connection
1/8"...1" NPT Thread
Body Material
Brass
Media Categories
Liquid or Gas
    Usable With Air
    Horizontal Installation Only
    Highly Visible
    Economical
    Made in the USA
    Quick Delivery
    BABA (Build America, Buy America) complaint
View Full Product Info
DKF
Paddle Wheel Flow Indicator

Made in the USA | For Liquids | up to 22 GPM | up to 85 PSIG | up to 250 °F | 1/8" to 1" NPT | Horizontal or Vertical Installation

Starting at $165
Fast Delivery
DKF - Paddle-Wheel Flow Indicator for Liquids
Indicating Range
0.04...0.5 GPM to 0.50...22.0 GPM
Fittings
1/8...1 NPT Thread
Body Material
Brass
Max. Pressure
85 PSIG
Max. Temperature
250 °F (120 °C)
Media Category
Liquid
    Horizontal or Vertical Installation
    Highly Visible
    Economical
    Made in the USA
    Quick Delivery
    BABA (Build America, Buy America) complaint
View Full Product Info

Explore Our Product Line

Discover KOBOLD USA's expertise in industrial instrumentation, offering advanced solutions for flow, pressure, level, and temperature measurement. Our products, synonymous with quality and precision, cater to a wide range of industries, backed by expert engineering and exceptional customer support.

Industrial Instrumentation

Why Choose Us

Choosing KOBOLD means opting for a partner who understands your needs and is equipped to help you tackle the challenges of modern industry. We are not just a supplier; we are a partner committed to contributing to your success.

  • Innovative Solutions At KOBOLD, we are continually advancing our technology to meet the ever-evolving challenges of the industrial world. Our products incorporate the latest innovations, ensuring they remain at the forefront of measurement and control technology.
  • Customization We understand that each industry has its specific needs. That's why we specialize in providing customized solutions, tailored to fit the exact requirements of your operations.
  • Quality and Reliability Our products are synonymous with quality and reliability. Manufactured under stringent standards, they guarantee accurate and consistent performance, contributing to the efficiency and safety of your processes.
  • Global Expertise, Local Support With our global presence, we bring a wealth of international expertise. Combined with local support, we ensure that our clients receive the best of both worlds - world-class technology with personalized, local service.
  • Comprehensive Range Our diverse range of products means we can cater to a wide array of measurement and control needs, making us a one-stop solution for many of our clients.
  • Customer-Centric Approach We pride ourselves on being customer-centric. From consultation to after-sales service, our team is dedicated to providing excellent support, ensuring that your experience with us adds value to your operations.
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KOBOLD proudly serves clients globally with our extensive network of locations. In the USA, we're based in Pittsburgh, PA, providing top-tier service and expertise in flow measurement technology.

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