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Kofloc Flowmeter With Precision Needle Valve Model RK1250 Series

Flowmeter with Precision Needle Valve ( for Accurate Flow Control)


Model RK1250 Series Flowmeter is a completely renewed model of existing KOFLOC RK1200,designed as a flowmeter that can be integrated into the customer’s equipment.A happy combination of a grade high precision float type flowmeter with a needle valve capable of very accurate flow control provides a flowmeter ideal for measurement and control of trace flows.


– Capable of controlling

ultra-minute flows

Can respond to a

wide range of flows from ultra-minute flows of 0.5-3 ml/min to flows of 3-30


– The incorporated precision

needle valve allows a delicate control of flows.

The effective

revolving speed of the needle valve can be maximized by specifying a maximum

flow and normal supply pressure.

– Wide variations

Four total lengths

of the flowmeter are available:126,156,206,and 256 mm,for your selection

according to your needs.

– Two types of valve


The needle valve can

be laid out either at the top or at the bottom of the meter.Choose the type

that best suits your needs.

– Measurement and control

of water flows also possible

Measurement and

control of water flows not exceeding 1l/min are also possible.


– For integration into your

equipment panel

– For gas devices to be used on the semiconductor manufac-turing site

– For biotechnology


– For vacuum line control

Standard Specifications

– Fluids :

*Gases : Air, N2, O2, H2, He, Ar, and CO2 (Calibration by actual gas) For other gases, consultation is necessary regarding whether conversion conditions or calibration by actual gas is to be used. * Optional: Scale indicating two types of fluids

*Liquids : Standard fluid: Water For other liquids, consultation is necessary regarding whether conversion conditions or calibration by actual liquid is to be used.

– Flow range :

*Gases : 0.5-5 ML/MIN to 3-30 L/MIN (See the Capacity Table below.) Optional: 0.5-3 ML/MIN

*Liquids : 0.5-5 ML/MIN to 0.1-1 L/MIN (See the Capacity Table below.) Optional: 0.5-3 ML/MIN

– Accuracy :

*FS±2% (Measurement

point) * Optional: FS±1% (Measurement point)

*FS±2% (Measurement point)

– Proof pressure :

*Gases : 1.0 MPa for

100 ML/MIN or less ; 0.7 MPa for 5 L/MIN or less ; 0.5 MPa for 10 L/MIN or


*Liquids : 1.0 MPa for 5 ML/MIN or less ; 0.7 MPa for 150 ML/MIN or less ; 0.5 MPa for 200 ML/MIN

or more

– Available scale : 10:1 *

Optional: 20:1

– Body block and some other

components : *SS : SUS316

*BS : Brass

– Tapered tube : *SS &

BS : Pyrex®, glass

– Packing : *SS : FKM


– Float : * SS & BS :

Pyrex, SUS316, glass

– Protective cover : * SS

& BS : Acrylic resin

– (Temperature resistance) : * SS & BS : MAX60°

– Connection :*SS & BS : Rc1/4(Standard); Rc1/8(Optional)

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