Mass Flow

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.

A flow controller is a differential pressure regulator designed to control minute gas flows with precision and keep a certain constant flow rate. Model 2203 Variable Secondary Pressure Flow Controller is a control valve that keeps mass flows at a constant rate under a given constant level of supply pressure even when the load pressure on the secondary side (outlet side) fluctuates, and its construction is designed so that the performance of its precision control over flows to the set flow rate is maintained by the incorporated precision needle valve without being affected by such fluctuations.

This is a miniature needle valve at an affordable price with simplified construction that allows easy control of operation for fine regulation of gases and liquids. Its simplified structure is comprised of the components that are the minimum requirement, avoiding overspecification

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.

This is an enhanced model of the KOFLOC Precision Needle Valve Model 2412 (see page 102), which now incorporates a multidial that allows the user to set desired flow rates by dial operations. This valve makes the most of the rotationto-flow linearity and repeatability performance of the 2412 needle.

This needle valve has been designed to control minute gas and liquid flows with precision and ease. Design allows the rotation of the regulating screw to transform into linear motion of the needle without subjecting the needle to gaps and/or vibrations produced by the screw, so smooth, stable flows can be ensured.

The Model 3000 Series maintains flow control characteristics with hysteresis of 15% or less (full-scale current). This ultra-compact proportional solenoid valve is perfect for automatic gas flow control of gas chromatographs and various other analyzers. With its high resolution, the Model 3000 is also suitable for precision pressure control.

Amber tapered tube with secure structure

The flow meter for gas mixing uses a KOFLOC multiple flow meter to mix multicomponent fluids. Connection of pipes to respective gas inlets and the mixed gas outlet permit gases to be mixed. This flow meter is ideal for easy gas mixing in laboratories and studies.

This multiple flow meter with a needle valve is made by combining several types of flow meter for controlling various flows in a laboratory. It is designed based on the RK1200, a flow meter with precision needle valve, and has been verified to have outstanding reliability.

These are large capacity float type flowmeters. Flows within the ranges of 200 to 1,000 L/MIN (for gases) and 10 L/MIN to 30 L/MIN (for liquids) full scale can be measured and controlled.

These compact reed switch flowmeters developed centering the focus on cost reduction are for monitoring gas and liquid flows. Any of these models is optimum for process control of cooling water.

Wide varieties of flow range available from ultra-minute flows to large flows. Highly-accuracy measurement of ±2%F.S. or better. Wide variations for various usage conditions.

The MODEL RK1600R Series Flowmeter is a compact, lightweight model with needle valve designed through our all-out effort at streamlining with the aim of achieving an economical but superior quality flowmeter in accuracy and repeatability, and still more, handy at operation site.

This is a compact handy flow control/measuring unit made by combining a compact DIN72 x72 power indicator [CR-400] and MFC/MFM.

Model 3200 Series Mass Flow Controller is an advanced model designed as a successor of the 3910 Series that enjoys a wide use for diverse applications such as manu-facture of semiconductors, LCDs, combustion equipment, analytical devices, and biotechnology fields. Its high per-formance is equal to a new standard of KOFLOC.

Model 3660 Series Mass Flow Controller has been devel-oped centering the focus on compactness and low cost and is being acclaimed by a wide range of users for di-verse applications, including from laboratory research and development activities to the use as a standard mass flow control model for various types of analyzers and vacuum devices in the production line. Varieties of derived models and options are available.

DF-550C is now released as an all-metal model of the high-performance digital mass flow controller DF-250C Series. The metal sealed structure enables controlling the measurement of corrosive gases such as semiconductor process gases.

The Model DF-350 Series is a digital mass flow controller with an integral indicator that operates on a 24-V power supply. It offers features equivalent to the DF-250 Series designed for up to 50 SLM.

The Model DF-300C Series is a mass flow controller with an integral indicator that operates on a 24-V power supply, as developed in response to the requests from users of the DF Series. It inherits the features of the DF-200C Series with enhanced convenience, including accuracy of ±1% S.P., response ≤1 sec (in all ranges), and the multiple-gas, multiple-range versatility, i.e., support of seven gases (including reference gas) and the ease of changing the flow rate range of each gas.

The DF-250 series is a high performance digital mass flow controller with ≤1 sec response less than 50SLM specification. The series offers large flow rate line-up up to 300SLM.

The DF-200 series is a high performance digital mass flow controller with ±1%S.P. accuracy and ≤1 sec response. It also has multple-gas and multiple-range function of seven gases and the ease of changing the flow rate range of each gases.

The Model RK1500 Series Flowmeter is equipped with a bellows seal type needle valve so that it can withstand high vacuum, high pressure, high temperature and toxic gases.

This is a grade high precision float type flowmeter combined with a needle valve capable of very accurate flow control. It is ideal for measurement and control of minute flows.

The flexible flow meter is designed to permit easy disassembly,cleaning, and reassembly. It is ideal for equipment that must be disassembled for maintenance. Users can change the flow meter tube only without changing the block. rota flow

This is a glass tube float type flowmeter materialized through our all-out effort at streamlining the production line to offer users a low-cost model that can be shipped in a reduced period of delivery. While it is outstandingly compact rota flow

Model 5100 Series Mass Flow Controller/Meter features weldless structure, metal seals, accurac y of ≤±1%, re-sponse of ≤±1 second and other basic performance con-ditions required for semiconductor process control, and additionally, has achieved a significant price reduction.

The Model 5400 Series is a successor to the Model 3440, with enhanced basic capabilities. The appearance is similar to the conventional MFC. The sensor drive system is improved: the zero-drift is further reduced and the re-sponse in the lower range is improved. The Model 5410 Series is a mass flow meter with the same body design as that of the 5400 Series.