The Mighty Flow Cell differential pressure flow meter is a compact digital flow meter that uses a small differential pressure sensor. By adopting a two-wire system, it also achieves low power consumption, making it both efficient and easy to install in various applications. Its compact design ensures space-saving installation while maintaining precise flow measurement capabilities.

DMT-R Type DMY-R Type

DMT-RC Type （With connector）

Features

• Instantaneous and cumulative flow rates can be read just by connecting the power.
• Remote measurement is possible.
• Flexible installation with free placement of the wiring.
• Provides standard flow rates for both liquid (water equivalent) and AIR with easily selectable specifications (standard flow rate table available).
• Minimized pressure loss.
• The connector allows the flow indicator part to be moved to a more visible position.

Specifications

• Applicable Fluids: Liquid (water equivalent), AIR, N₂, Ar, others.
• Accuracy: ±3% (F.S.)
• Pipe Diameter: 10 to ~500A
• Flow Range: Please refer to the separate standard flow rate table.
  • Liquid (water equivalent)
  • AIR
• Maximum Operating Pressure: 0.8 MPa
• Maximum Operating Temperature: 90°C
• Power Supply: 24V DC ±10%
• Instantaneous Flow Rate Display: 3-1/2 digit LCD
• Cumulative Flow Rate Display: 6-digit LCD
• Output Signal:
  • 4-20mA DC (2-wire system, load capacity: 500Ω)
  • Open Collector Pulse (load capacity: 30VDC/20mA)
• Material: SCS14, SUS304, Viton rubber, ADC12, others

Thermal Flow Cell Mass Flow Meter
By combining an orifice with a thermal sensor, the device accurately measures gas mass flow without needing corrections for pressure or temperature changes. Its humidity- and water-resistant sensor design ensures long-lasting durability.

NFHT-R Type NFHY-R Type

NFHY-RC Type （With connector)

Features

• Instantaneous flow rate and cumulative flow rate can be read by simply connecting the power.
• Remote measurement is possible.
• Flexible installation of wiring with free connector placement.
• Highly durable sensor structure, resistant to moisture and water, compared to previous company products.
• No correction required for changes in atmospheric pressure or temperature.
• Minimized pressure loss.
• The connector can be moved to a position where the flow indicator is easy to see.

Specifications

• Applicable Fluids: AIR, N₂, Ar, CO₂
• Accuracy: ±2% (F.S.)
• Pipe Diameter: 10 to ~500A
• Flow Range: 0.4 to ~20000 m³/h (NTP)
• Maximum Operating Pressure: 0.8 MPa
• Maximum Operating Temperature: 60°C
• Power Supply: 24V DC ±10%
• Instantaneous Flow Rate Display: 4-digit LCD (can switch per minute or per second)
• Cumulative Flow Rate Display: 6-digit LCD (can reset the cumulative flow)
• Output Signal: 4-20mA DC (load capacity: 500Ω)
• Open Collector Pulse Output: (load capacity: 30VDC/20mA)
• Material: SCS14, SUS304, Viton Rubber, ADC12, others

Flap-type flow meter, flap flow cell
A flap-type flow meter with an easy-to-read scale.

WM□-□F Type （Metal mold, on-site instruction type）

WM□-□□ Type （Metal mold, alarm output type）

WS□-□ Type （Sight glass type)

Features

• Can be used in any flow direction (vertical, horizontal).
• The metal type is suitable for use with opaque liquids, while the sight glass type allows visual inspection of the fluid from the outside.
• Does not use magnets, so it is not affected by magnetic interference.
• The body material can be selected from FC200 or SCS13.

Specifications

• Accuracy: ±5.0% FS
• Size:
  • Threaded connection: 15A to 50A
  • Flange connection: 15A to 100A
• Measured Fluids: H2O and other liquids.
• Maximum Operating Pressure:
  • Metal type: 1.0 MPa
  • Sight glass type: 0.5 MPa
• Operating Temperature Range:
  • Metal type (on-site instruction type): -20°C to 120°C (up to 120°C for the body made from FC material)
  • Metal type (alarm output type): -20°C to 100°C (up to 100°C for the body made from FC material)
  • Sight glass type: 0°C to 100°C
  • (Avoid freezing in any case)
• Materials: FC200, SCS13, SUS304, NBR, among others.

V/P Purge Meter (All-Metal Area Flow Meter)

NVP-I Type (Field Indicating Type)

NVP-E Type (Field Indicating / Current Signal Transmitting Type)

NVP-A Type (Field Indicating / Alarm Signal Transmitting Type)

Features

• Ideal for measuring the flow of high-temperature and high-pressure fluids that cannot be measured with glass tapered tubes.
• The structure prevents the guide rod from protruding from the main body during measurement, allowing for direct connection to elbows and valves.
• The NVP-E type (current signal output type) is designed for easy use with a two-wire 4–20 mADC output.
• The NVP-A type (alarm signal output type) allows selection from upper limit, lower limit, or both limit contacts (all A contacts).

Specifications

• Measured Fluid: Liquid, Gas
• Accuracy: ±5.0% F.S.
• Pipe Diameter: Rc1/4, Rc3/8, Rc1/2
• Maximum Operating Pressure: 4.0 MPa
• Maximum Operating Temperature: 100°C (NVP-I type, NVP-A type), 80°C (NVP-E type)
• Material: SUS316, PVDF, NBR, PC, ADC, etc.

V/A Floater (All-Metal Area Flow Meter)

NVA-I Type (Local Indicator Type)

NVA-E Type (Local Indicator and Current Signal Output Type)

NVA-A Type (Local Indicator and Alarm Signal Output Type)

Features

• With a short installation length of 250 mm, it can be installed without taking up much space.
• Even during measurement, the structure prevents the guide rod from protruding from the main body, allowing direct connection to elbows, valves, and similar components.
• NVA-E Type (flow signal output type) is designed for easy use with a 2-wire 4~20 mA DC output.
• NVA-A Type (alarm signal output type) allows selection of signal points from upper limit contact, lower limit contact, or upper/lower contact points (select from A or B contacts).

Specifications

• Measured Fluid: Liquids (equivalent to water)
• Accuracy: ±2.5% FS
• Nominal Diameter: 20A, 25A, 40A, 50A, 65A, 80A, 100A
• Maximum Operating Pressure: 1.0 MPa
• Maximum Operating Temperature:
  • 150°C (NVA-E Type)
  • 100°C (NVA-A Type)
  • 80°C (NVA-P Type)
• Materials: SUS316, ADC, NBR, others

Combination of Area Flow Meter and Spring
The flow switch is a compact, standardized flow indicator with an alarm contact type, designed for measuring and controlling flow.

NFAT-CC-1-Type 8A～25A

NFAT-MC-1-Type 8A～25A

NFAT-MM-1-Type 8A～50A

The flow monitoring meter is the model NFRT and does not come with an alarm switch.

Features

• This combines a float-type area flow meter with a spring, and the specially designed transparent tube allows easy reading of the flow rate with equally spaced scale marks.
• By using a spring, you can select either a vertical flow direction (bottom to top) or horizontal flow direction.
• With the use of a built-in magnetic indicator and float, an alarm contact can also be attached (NFAT-M□ type can be installed in three directions).
• By standardizing and specifying the parts, the various models offer low cost and short delivery times.

Specifications

• Accuracy: ±5.0% FS
• Nominal Diameter:
  • NF□T-MM Type = 8A ~ 50A
  • NF□T-MC Type / -CC Type = 8A ~ 25A
• Fluid: Liquids (equivalent to water)
• Maximum Operating Pressure:
  • NF□T-MM Type = 1.0 MPa
  • NF□T-MC Type / -CC Type = 0.5 MPa
• Maximum Operating Temperature:
  • NF□T-MM Type = 60°C
  • NF□T-MC Type / -CC Type = 50°C
• Flow Range: Please refer to the flow range table.
• Alarm Contact Specifications: Reed switch (self-holding type, contact point)
  • U type: The switch turns ON when the flow exceeds the set value.
  • D type: The switch turns ON when the flow falls below the set value.
  • W type: U+D (for NFAT-M□ Type only)
• Materials:
  • Main Body: PC, ADC
  • Transparent Tube: Polycarbonate, SCS13

Constant Flow Valve for Fan Coil Units
It maintains a constant flow rate even with fluctuations in primary and secondary pressures.

HCT Type

HCT-Y Type

HCT-WA Type

Features

• As it is self-powered, no external energy is required.
• It operates over a wide pressure differential range.
• Equipped with an anti-vibration damper and a damper protection strainer.
• Can be used in both horizontal and vertical piping.
• Low cost.
• Certified products registered by the Japan Water Works Association are also available.

Specifications

• Accuracy: ±8%
• Nominal Diameter: 15A ~ 25A
• Flow Rate Setting Range: 3 ~ 50 L/min
• Maximum Operating Pressure: 1.0 ~ 2.0 MPa
• Maximum Operating Temperature: 100°C
• Materials: Lead-free brass, SUS304, CAC406

Even with pressure fluctuations, it always maintains a constant flow rate.

Nominal Diameter: 8A～15A
NFVT-NS（NBR specifications）	NFVT-LTS（PTFE specifications）

Nominal Diameter: 20A、25A
NFVT-L （for liquids）	NFVT-GN （for gases）	NFVG-L （for liquids）

Nominal diameter: 32A～50A
NFVT-L （for liquids）	NFVT-GN （for gases）	NFVG-L （for liquids）

Features

• The adjustable flow rate type allows the flow rate to be freely set within the flow range.
• As it is self-powered, there is no need for electricity or other external energy.
• No need for straight piping sections before or after the valve.
• Compared to conventional products, it is smaller and lighter.

Specifications

• Accuracy: ±2.0% FS
• Nominal Diameter:
  • NFVT Type (Screw Connection): 8A (Rc1/4) ~ 50A (Rc2)
  • NFVG Type (Flange Connection): 20A ~ 50A
• Fluid: Liquid (equivalent to water), air, nitrogen, and other gases
• Maximum Operating Pressure: 0.8 MPa (0.5 MPa depending on specifications)
• Maximum Operating Temperature: 90°C (for 32A ~ 50A, the liquid use temperature is 70°C)
• Materials: SCS13, SUS304, FC200, C3604, SS400, NBR, PTFE, POM, hardened nylon resin, others

This is a fixed flow rate type constant flow valve that supplies a constant flow rate even when there are pressure changes.

HST Type	HSG Type
HYS Type	HYG Type

Features

• A new lineup of screw-type models.
• No need for external energy sources like electricity or compressed air.
• Instantly responds to pressure changes.
• No need for straight piping sections before or after the valve.
• Operates from low differential pressure.
• Can be used in both horizontal and vertical piping (please specify the flow direction when ordering).
• HYS and HYG models can be maintained without removing them from the piping.

Specifications

• Accuracy: ±5.0%
• Nominal Diameter:
  • HST type = 15A ~ 25A
  • HSG type = 15A ~ 150A
  • HYS type = 25A ~ 50A
  • HYG type = 15A ~ 200A
• Flow Rate Setting Range:
  • Liquids: 0.3 ~ 280 m³/h
  • Gases: 4 ~ 2500 m³/h (ntp)
• Maximum Operating Pressure: 1.4 MPa
• Maximum Operating Temperature: 90°C
• Material: FC200, SCS13, SUS304, NBR, PC, others

This flow meter actively manages the flow in air conditioning systems, measuring the flow of chilled and hot water used in building air conditioning systems. Since it utilizes a Pitot tube, it is easy to install and has almost no pressure loss.

Detachable Indicator Type
PFNS-M Type [Indicator Section Made of Bronze] PFNS-A Type [Pitot Section Made of Brass]	PFNC-M Type [Indicator Section Made of Bronze] PFNC-A Type [Pitot Section Made of Bronze]
Fixed Indicator Type
PFT-S Type [Made of Brass] PFT-C Type [Made of Bronze]

Features

• Accurate measurement with a double scale.
• Red for Hot water (60°C), Blue for Cold water (7°C).
• The specially structured Pitot tube enables high-accuracy measurements, even with minimal straight pipe lengths of 5D upstream and 3D downstream from the installation point.
• Maintenance and inspection of the indicator section can be done without stopping the flow.
• Can be easily installed on existing piping.
• Detachable indicators can be used on multiple piping systems.

Specifications

• Accuracy: ±5.0% FS
• Nominal Diameter: 20A to 450A (based on SGP pipe internal diameter)
• Flow Range:
  • Water: 8 to 25,000 L/min
  • Large flow type (15 to 36,000 L/min) is also available.
• Maximum Operating Pressure:
  • Detachable type: 1.0 MPa, 2.0 MPa
  • Fixed type: 1.0 MPa, 2.0 MPa
• Maximum Operating Temperature: 90°C
• Pressure Loss: Extremely small (negligible).

This is an area flow meter that achieves short delivery times by standardizing the fluid and flow rate range.

For Vertical Piping
NSP-1 Type	NSP-1G Type (Flange Connection)
For Panel Mounting
NSPO-4 Type
For Horizontal Piping
NSP-5 Type (Flow Direction: Left → Right) NSP-6 Type (Flow Direction: Right → Left)	NSP-7 Type (Flow Direction: Left → Right) NSP-8 Type (Flow Direction: Right → Left)

Features

• By standardizing fluids and flow rate ranges and maintaining stock, we have achieved shorter delivery times.
• The flow direction options include vertical piping (bottom to top), panel mount type (bottom to top), and now the lineup has expanded to include horizontal piping (left to right or right to left) with a unique design.
• For vertical piping, the NSP-1G type with flange connection is also available.
• Ordering: Please select from standard flow rates and scale numbers (for liquids (water equivalent) and gases) based on your usage conditions. We will provide the scale number upon request, making it easier for customers to place orders.
• For liquids (water equivalent), the flow rate units are L/min (or mL/min) and t/h (or m³/h). For gases, the standard flow rate is represented by double scales for N2 gas, and standard configurations for other gases are available. Rc1/4 – 4 models can also accommodate gases like Air, Ar, or CO2 (single scale available for each).
• The main materials used are stainless steel or PVC, with resin-coated pipes having excellent corrosion resistance. Additionally, flange connection models (NSP-1G type) with acrylic tubes or resin pipes can also be manufactured.
• We are open to manufacturing custom specifications (for different fluids or flow ranges), so feel free to consult with us.

Specifications

• Fluid: Liquids (water equivalent), AIR/N2, Ar, CO2
• Flow range: Please refer to the separate sheet “Standard Flow Rate & Scale Number Table” (for liquids and gases).
• Accuracy: ±2.0% FS to ±8.0% FS (depends on the size and fluid)
• Nominal Diameter:
  • Screw connection: Rc1/4 ~ Rc2
  • Flange connection: 15A ~ 80A
• Maximum Operating Pressure: 0.3 MPa to 0.8 MPa (depends on size and material)
• Maximum Operating Temperature: 90°C (50°C if using PVC material)
• Material: SCS14, SCS13, SUS304, SUS316, PVC, heat-resistant glass, others

A compact flow meter that combines an orifice and a float.
Standard products are available for water and air.

FLT-H Type （Screw connection） FLY-H Type （Wafer connection） FLW-M Type （TS Flange connection） FLG Type （Flange connection） FLT-HAB Type （With photoelectric switch）

Features

• A large variety of standard products for water and AIR are available, enabling short delivery times.
• Can be installed both vertically and horizontally.
• Compact flow rate indicator.
• Equipped with a cock piece, allowing cleaning and inspection without stopping the flow in the pipes.
• An alarm output is possible by attaching a flow rate warning device.

Specifications

• Accuracy:
  • For water: ±2.0% F.S.
  • For others: ±2.5% F.S.
• Nominal Diameter: 10A ~ 500A
• Maximum operating pressure:
  • Metal type: 0.8 MPa (Standard)
  • PVC type: 0.5 MPa
• Maximum operating temperature:
  • Metal type: 90°C (Standard)
  • PVC type: 50°C
• Material:
  • FCD450, SS400, SUS304, SUS316, SCS13, SCS14, C3604, PVC, heat-resistant glass, others