KOFLOC 2203 SERIES Flow Controller For Fluctuating Supply Pressure

Description

The KOFLOC 2203 Series is a specialized mechanical flow controller designed to maintain a constant flow rate of gas even when the supply (upstream) pressure fluctuates.

While a standard needle valve’s flow rate will change if the inlet pressure drops or spikes, the 2203 utilizes a built-in bellows or diaphragm mechanism to compensate for these changes automatically.

The KOFLOC 2203 Series is a high-precision, mechanical flow controller designed to maintain a constant, minute gas flow rate, even when secondary (outlet) pressure fluctuates. Utilizing an internal diaphragm-linkage and a non-rotary needle valve, it automatically compensates for load pressure changes, making it ideal for laboratory, analytical, and process control applications.

Brand

Kofloc

The natural environment is preserved through the balance of solids, liquids and gases that exist on the earth. However, human civilization has caused pollution that has greatly damaged our environment. The task of the present generation is to restore our environment to its natural healthy state. And this is also the greatest challenge for 21st century science and technology.

KOFLOC's corporate motto is "A Scientific Approach for Fluids." In other words, we create products that scientifically measure and control the balance of liquids and gases. We trust that through our work we are making a contribution to the regeneration of the environment and to the establishment of a prosperous society.

Specifications

Model	2203
Application Fluids	N2,Air,H2,He,Ar,O2, CO2, etc
Max. Flow Rate (Air at 20 C	10mL/min to 20L/min
Control Accuracy	Within ±1% of Indication Value Againt load Pressure Fluctuations (inlet Outlet Diffferential Pressure 0.5Mpa Or more
Number of turns of regulating screw	Approx.12 turns
Max . Working Pressure	0.8Mpa(G)
Max. working Temperature	60°C
Materials of parts in contct with fluids	SS:SUS316, PCTFE, FKM, Hard Glass A:Al, Brass, SUS316, POM, NBR,Hard Glass
Connection	Rc1/8(M8 Rc 1/8)
Weight	Approx :160 g

Features

Feature	Details
Control Type	Upstream pressure compensation (keeps flow steady despite supply changes)
Flow Ranges	Typically from 5 mL/min up to 20 L/min (depending on the specific model)
Max Pressure	Generally rated for 0.7 MPa to 1.0 MPa
Materials	Available in Stainless Steel (SUS316) or Brass, with FKM or PTFE seals
Accuracy	Usually within ±5% of the full scale

Gas Chromatography: Ensures a steady carrier gas flow even as cylinder pressure drops.
Environmental Monitoring: Maintains precise sampling rates for air quality sensors.
Burner Control: Prevents flame flickering by stabilizing gas delivery.
Cost-Effective: Much cheaper than an electronic Mass Flow Controller (MFC) if you don’t need digital data logging.