Kofloc Model 2204 Variable Primary Pressure Flow Controller

Model 2204 Variable Primary Pressure Flow Controller is a control valve that always keeps flows at a constant rate under a given constant level of secondary pressure (outlet pressure) even when the primary pressure (inlet pressure) fluctuates. The built-in precision needle valve accurately controls flows to the set flow rate, including ultra-minute flows.

Kofloc Model 2450 Bellows Needle Valve

Kofloc Model 2450 Bellows Needle Valve: This bellows seal type needle valve has been specifically developed so that it can satisfy the requirements for such areas in which leak is a concern of vital importance.
Model 2450 Bellows Needle Valve has a construction to drastically prevent fluid leaks. In addition, it is outstanding in heat resistance and corrosion resistance, so the customer can use it with peace of mind not only in such adverse conditions where high vacuum, high pressure, high temperature, or extremely low temperature is present but also for corrosive, toxic, or costly fluids.

KOFLOC strives for thorough quality control at domestic factories.
In recent years, we have also been focusing on product development for liquid measurement and control equipment, and we will deliver products that can be trusted as “Fluid Kofloc” to the world.

Features

1. Variable Primary Pressure Compensation

The 2204 is engineered for systems where the gas source (e.g., a gas cylinder or a fluctuating compressor line) is inconsistent. As the primary pressure drops, the internal diaphragm expands/contracts to adjust the orifice size, ensuring the flow delivered to the process remains perfectly steady.

2. Non-Rotary Needle Structure

The needle valve does not rotate during adjustment. This linear movement:

Prevents particle generation (essential for cleanroom use).
Eliminates the “sawtooth” flow fluctuations that occur when a needle rotates against the valve seat.
Ensures exceptional repeatability for laboratory settings.

3. Ultra-Clean Standards

As is standard with the KOFLOC precision series, the 2204 is degreased and assembled in a cleanroom environment. This makes it ideal for Gas Chromatography (GC) and other analytical processes where trace hydrocarbons or dust would compromise data accuracy.

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