Flow Meter & Monitor

Quick Couplings

The Nitto Kohki Flow Meter & Monitor is a series for flow metering and monitoring for air and liquids with an operating pressure depending on the series. Flow meter and monitor for Cupla lines.

As an authorised Nitto Kohki distributor we stock 5 variants of the Flow Meter & Monitor - bodies in brass, FKM seals, model series FMC-30 / FM-03.

⚡depending on the series - operating-pressure range for air and liquids

⚙brass - body materials; FKM seals

✓Key feature - Flow meter and monitor for Cupla lines

🔩5 variants in stock - model series FMC-30 / FM-03

Parameter	Value
Type	series for flow metering and monitoring
Operating pressure	depending on the series
Body materials	brass
Seals	FKM
Media	air and liquids
Model series	FMC-30 / FM-03
Variants in range	5

Typical applications: special applications in manufacturing, assembly and maintenance.

5 variants in stockFlow Meter & Monitor - FMC-30 / FM-03

depending on the seriesbrass, FKM

Technical data from the manufacturer catalogue

Series	FLOW MONITOR
Body material	Brass
Seal material	Fluoro rubber (FKM)
Max working pressure	1.0 MPa {10 kgf/cm2}
Working temperature	Fluoro rubber (FKM): +10 °C to +80 °C
Applicable fluids	Water
Size range	Rc 3/8 and Rc 1/2
Catalogue page	C01en-b, 166

Operating principle

Connecting sequence of a ball locking quick connect coupling.

Fluid flow from low flow rate (2 L/min) water pipes can be visually checked with the rotating two-colored impeller.
Flow Vane ASSY can be replaced without removing it from the piping.
The stopper prevents unintended removal of the plastic parts.
Installation and replacement is easy since the screw part of the T2 side rotates freely to the left and right.
The Flow Vane ASSY can be replaced when dirty.
Fluid flow can be bi-directional.
RESIDUAL PRESSURE RELEASE JIG: residual pressure within socket or plug can be released easily by just turning the handle.
RESIDUAL PRESSURE RELEASE JIG: jigs are available in two types, socket type for use with plugs and plug type for use with sockets; connection to sockets or plugs is the same as connection of a normal CUPLA.

All models of the series

FMC-30 - Female thread

Model	Coupling part	Application	Brass (g)	L	A	T	øH1 (WAF)	øH2 (WAF)	øøD
FMC-30-3F	flow monitor	R 3/8	167	(81)	(40)	Rc 3/8	Hex.24	Hex.21	30
FMC-30-4F	flow monitor	R 1/2	256	(94)	(40)	Rc 1/2	Hex.29	Hex.29	32

BH-M - Male thread

Model	Coupling part	Application	Brass (g)	L	T	øH1 (WAF)	øH2 (WAF)	øøB
BH90-3M	adapter	Braided hose ø9×ø15 mm, hose wall thickness 3+/-0.3 mm, size 3/8 inch	106	(49)	R 3/8	Hex.23	Hex.24	8.5
BH120-4M	adapter	Braided hose ø12×ø18 mm, hose wall thickness 3+/-0.3 mm, size 1/2 inch	159	(59)	R 1/2	Hex.27	Hex.27	11
BH150-4M	adapter	Braided hose ø15×ø22 mm, hose wall thickness 3.5+/-0.35 mm, size 1/2 inch	210	(67)	R 1/2	Hex.30	Hex.30	13
BH190-6M	adapter	Braided hose ø19×ø26 mm, hose wall thickness 3.5+/-0.35 mm, size 3/4 inch	301	(74)	R 3/4	Hex.35	Hex.35	17

PART

Model	Coupling part	Application
CB66137	Flow Vane ASSY (plastic part) for FLOW MONITOR	Replacement Flow Vane ASSY
CB67052	Inner sleeve for FLOW MONITOR	Replacement inner sleeve
CQ48710	Stopper for FLOW MONITOR	Replacement stopper

Dimensions in millimetres. Values in brackets apply in the connected condition.

Legend: L = overall length; H = width across flats or outside dimension; D = socket outside diameter; A = hose barb length; C = sleeve dimension; T = thread or barb size; B = bore

Series comparison

Series	Max working pressure	Size range	Valve structure	Applicable fluids
COMPACT ZEROSPILL CUPLA	10 bar	Thread 1/8 inch, 1/4 inch	Two-way shut-off (Spill Reduction)	Air, Water
CUPLA HOSE with FULL BLOW CUPLA	10 bar	Hose size ø5 mm×ø8 mm, ø6.5 mm×ø10 mm, ø8.5 mm×ø12.5 mm	One-way shut-off	Air
FLOW MONITOR	10 bar	Rc 3/8 and Rc 1/2	-	Water
ANTI-VIBRATION PLUG HOSE	15 bar	R 1/4 (SHA-3-2R), R 3/8 (SHA-3-3R)	One-way shut-off	Air
HI CUPLA BL	15 bar	1/4 inch, 3/8 inch, 1/2 inch (thread and hose barb); SN type for urethane hose: for 6.5 x 10 mm, 8 x 12 mm and 8.5 x 12.5 mm hose	One-way shut-off	Air, Water
HI CUPLA Two Way Type	15 bar	Thread 1/4 inch, 3/8 inch, 1/2 inch. Hose barb for dia. 6.5 mm x dia. 10 mm and dia. 8.5 mm x dia. 12.5 mm hose.	One-way shut-off	Air
FLATFACE CUPLA F35	350 bar	Thread 1/4 inch, 3/8 inch, 1/2 inch, 3/4 inch, 1 inch	Two-way shut-off (Spill Reduction)	Hydraulic oil
FLATFACE CUPLA FF	350 bar	3/8 inch, 1/2 inch, 3/4 inch, 1 inch (thread)	Two-way shut-off (Spill Reduction)	Hydraulic oil

Choose FLOW MONITOR when the task is to see whether water is actually flowing in a mold cooling line, not to connect or disconnect that line: the sibling series such as HI CUPLA BL, LOCK CUPLA 200 and ROTARY LINE CUPLA are one-way shut-off couplings and indicate no flow at all. Its use is limited to water at a working pressure of 1.0 MPa {10 kgf/cm2} and a flow range of 2 to 20 L/min with Rc 3/8 or Rc 1/2 female threads, so lines run at the 1.5 MPa of those one-way shut-off series are outside its rating. Where the concern is not flow indication but fluid escaping on disconnection, the two-way shut-off COMPACT ZEROSPILL CUPLA is the series to look at.

Body and seal materials

Body material
Brass

Seal material	Mark	Working temperature	Remarks
Fluoro rubber (FKM)	-	+10 °C to +80 °C	-

Further catalogue data

Note	Value
Pressure unit conversion	1.0 MPa = 10 kgf/cm2 = 10 bar = 145 PSI
Flow Vane ASSY material - outer cylinder	Polycarbonate
Flow Vane ASSY material - impeller	Polypropylene
Flow Vane ASSY material - inner sleeve, stopper	Polyamide
Maximum tightening torque Rc 3/8	12 Nm {122 kgf - cm}
Maximum tightening torque Rc 1/2	30 Nm {306 kgf - cm}
Flow direction	Fluid flow can be bi-directional.
Recommended replacement time of Flow Vane ASSY	Read from the chart on page 168: the recommended replacement time is calculated from the amount of wear on the internal parts of the Flow Vane ASSY based on long-term flow durability tests; chart axis values 1000 to 100000 h with 5500 h and 14000 h marked and flow rates of 10 to 30 L/min.
CUPLA ADAPTER for Braided Hose Connection - body material	Brass
CUPLA ADAPTER for Braided Hose Connection - working pressure	Depends upon the specifications of braided hoses to be used.
CUPLA ADAPTER for Braided Hose Connection - working temperature range	Depends upon the specifications of braided hoses to be used.
CUPLA ADAPTER for Braided Hose Connection - applicable fluids	Air, Water, Oil
CUPLA ADAPTER for Braided Hose Connection - maximum tightening torque (taper pipe threads)	BH90-3M 12 Nm {122 kgf - cm}, BH120-4M 30 Nm {306 kgf - cm}, BH150-4M 30 Nm {306 kgf - cm}, BH190-6M 50 Nm {510 kgf - cm}
RESIDUAL PRESSURE RELEASE JIG - model naming	ZN - type of CUPLA to be attached. Example: for CUPLA model 350-3S the jig name would be ZN-350-3S.
RESIDUAL PRESSURE RELEASE JIG - attachable CUPLA	Sockets and plugs for SP CUPLA Type A, HSP CUPLA, 210 CUPLA, S210 CUPLA, 280 CUPLA and 350 CUPLA
RESIDUAL PRESSURE RELEASE JIG - sales unit	1 pc.
Flow rate	Working flow range 2 to 20 L/min. Flow rate - pressure loss characteristics chart on page 168 for FMC-30-3F and FMC-30-4F. Test conditions: fluid water, temperature 23 deg C. Chart range 1 to 100 L/min against 0.0001 to 0.1 MPa {0.001 to 1 kgf/cm2} pressure loss.

Interchangeability and size groups

The CUPLA ADAPTER for Braided Hose Connection mounts on a CUPLA plug or socket with female thread, such as ZEROSPILL CUPLA and SP CUPLA Type A. The RESIDUAL PRESSURE RELEASE JIG attaches to sockets and plugs of SP CUPLA Type A, HSP CUPLA, 210 CUPLA, S210 CUPLA, 280 CUPLA and 350 CUPLA.

Safety and application notes

RESIDUAL PRESSURE RELEASE JIG caution: since the upper limit of residual pressure that can be relieved depends on the product, please contact us separately.
Semi standard items: as these items are not always in stock, delivery time is subject to confirmation.
When ordering, please indicate Model Name or part number.

All technical data on this page is taken from the Nitto Kohki general catalogue Quick Connect Couplings C01en-b, page 166. The complete catalogue is available for download on this page.