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Differential Pressure Switches feature self-cleaning contacts.

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Differential Pressure Switches feature self-cleaning contacts.
Differential Pressure Switches feature self-cleaning contacts.

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December 18, 2013 - Designed for use with air and non-corrosive gases with standard switch points from 0.05–1.6 in. w.c., Series 605 can be installed vertically or horizontally and offers switch point repeatability of ±.004 in. Trapezoidal bead diaphragm design provides optimal contact release and accuracy, while self-cleaning contacts ensure switches are never susceptible to contact point corrosion or degradation. Applications include room pressure monitoring, interlock systems, and gas fired heating systems.
Original Press Release

Clark Solutions
10 Brent Dr.
Hudson, MA, 01749

Differential Pressure Switch Ideal for Room Pressure Monitoring, Interlock Pressure Systems, and Controlling Pressures in Gas Fired Heating Systems

Clark Series 605 Differential Pressure Switches feature a unique diaphragm design and self-cleaning contacts for more accurate switching points.

Hudson, MA – Clark Solutions announces its Series 605 Differential Pressure Switch featuring several design advantages making Series 605 Switches superior to alternative models.  Series 605 Differential Pressure Switches are designed for use with air and non-corrosive gases with standard switch points from 0.05" w.c. to 1.6" w.c.. Models with optional switch points above 1.6" w.c., are available. Series 605 Switches can be installed either vertically or horizontally without impacting performance.

605 Differential Pressure Switches feature a unique trapezoidal bead diaphragm design which provides a better contact release and accuracy than alternative switches. Switch Point Repeatability is ±.004" w.c (1.0 Pa). The self-cleaning contact design that is standard for all 605 Switches means they are never susceptible to contact point corrosion or degradation assuring exceptional service life.  Integrated cable strain relief is standard on all Series 605 Differential Pressure Switches to assure connectivity.  In addition to use in gas fired heating systems, HVAC monitoring and control systems, and Interlock systems, Series 605 Pressure Switches are excellent choices for appliance, fume hood, and other applications.

Clark Solutions has a fifty-year history of providing unique solutions to the control, measurement, and monitoring of flow, energy, pressure, force, and level in liquids and gases.  Located in Hudson, Massachusetts, the company offers a wide variety of instrumentation, including devices to record, monitor, and control pressure, flow, velocity, temperature, humidity, level, gas concentration, energy, and other properties.  Valve offerings include pneumatic valves, inert isolation valves, solenoid operated valves, valve actuators, pinch valves, manifold valves, ball valves, globe valves, butterfly valves, needle valves, and miniature and subminiature valves.  Clark Solutions also provides a wide range of pumps for air, gases, and liquids, including diaphragm pumps, peristaltic pumps, piston pumps, rotary vane pumps, gear pumps, impeller pumps, centrifugal pumps, and bellows pumps. 

For more information, contact Clark Solutions, 10 Brent Drive, Hudson, MA 01749, Tel. 800-253-2497, Fax 978-568-0060, email, or visit our web site at

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