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Your Partner in Problem Solving

Your specific low flow needs are what we at ChemTec cater directly to.  We surmount any fabrication challenge based on form, fit and function. Applications include those for:

Process Systems

Gas or liquid flows to instruments (recorders, analyzers, etc) are usually very low, but CTE ChemTec flow switches can instantly warn of flow stoppage or excess reduction due to plugging or malfunction of the device.

There are thousands of flow meters installed to give visual indication of flow. Some of these have sensing devices, but most do not. A visual flow meter is only helpful when someone is looking at it. A CTE ChemTec flow switch installed in series with the flow meter provides an automatic warning whether someone is looking or not. Many times this saves valuable man hours by eliminating the need for constant observation. Chemical feeder or proportioning pumps, whether steady state flow or pulsating flow, should be monitored. Loss or reduction of an established flow without knowing this at once can result in complete batch loss or off-spec material.

Loss of air supply to pneumatically operated valves and other control equipment can completely upset process control. An in-line flow switch can indicate loss of flow.

For industries where highly corrosive chemicals are handled, CTE ChemTec is the only company that offers “all TEFLON©” flow switches.

Leak Detection

CTE ChemTec flow switches, flow meters and EFV’s operate effectively as leak detectors. When installed downstream from valves, flow switches detect and signal if tight shut-off is not made. If there is rupture or a loose fitting downstream of the flow switch it will signal loss of fluid even though a downstream valve is tightly closed. If an EFV is plumbed in-line it will shut off flow should there be a fitting or line failure downstream which creates a significant pressure loss.

Valve manufacturers can use flow switches and flow meters to test valve leakage on newly assembled or repaired valves.

Air or liquid testing for leaks of tanks and various containers can be easily done with flow monitors.

Machine Tools & Metalworking

Flow switches can be installed in coolant lines and lubrication systems to ensure that vital areas are receiving adequate lubricant or coolant flow. Pressure gauges cannot ensure this.

Flow of industrial gases (Hydrogen, Oxygen, Nitrogen, Argon, Carbon Dioxide, etc) can be detected and signaled by a flow switch. A flow meter plumbed in each of these lines can measure and calculate the amount of each gas being consumed. An in-line EFV can protect personnel from toxic fumes and whipping hoses should there be a problem downstream.

Compressed Air Systems

Most plant engineers are aware of air leakage in their plants. These leaks can arise from faulty valves in air tools, hose fittings, etc. In even moderate sized plants, air leakage (loss of power to air tools) can cost thousands of dollars per year. Air leakage puts more demand on compressors, greater capacity may be required resulting in higher capital requirements, higher overhead and higher product costs as a result.

Flow switches installed in various circuits of the plant’s compressed air system can advise of air leakage through joints, fittings, hoses, or tools when air usage in a circuit is momentarily stopped.

The flow switch is adjusted from maximum tolerable leakage in a circuit. If leakage exceeds this value when testing, the switch will so advise. The broad range of CTE ChemTec’s flow switches allows great latitude in selecting a permissible leakage rate.

Air Conditioning & Refrigeration Systems

Installed in a cooling tower circulating water line, the flow switch signals “No Flow” conditions or a reduction of flow below minimum requirements. This sounds an alarm or activates a compressor motor.

When installed in a chilled water line, a flow switch can signal “Proper Flow Established” before compressors begin working. Before normal operations a flow switch can signal failure or overload of operating pumps and stop compressor motors.

Boiler, Power Plant & Heating Systems

Installed on a discharge line, a flow switch can stop deep or shallow well pumps on loss of prime or other malfunction causing loss of flow. On turbine blue oil systems a flow switch warns immediately of insufficient oil flow.

Installed in front of or after filters, the flow switch advises time to clean and can activate by-pass valves as desired.

Custom Application?

Tell us about your application and let us build you a custom product that best fits your needs. Simply complete the form, submit it to engineering and we’ll quote it. (Yes, it’s that easy!)