Krohne Marshall’s range of DW 18 series mechanical flow controllers are robust , proven, industry-standard technology that has been trusted for more than thirty years. These autonomous, inline flow switches are designed for the local indication and monitoring of homogeneous clean liquids. Because they operate completely mechanically via a deflector plate or baffle system, these devices require absolutely no auxiliary power supply to function.
Key Features and Benefits of the DW 18 series:
- Broad Compatibility: Engineered to fit both horizontal and vertical piping systems, the series can accommodate pipe diameters ranging from DN 15 all the way up to DN 3000 (½” to 120″) and beyond.
- Flexible Alarms and Switches: The controllers can be equipped with bistable reed switches, SPDT switches, and relays to generate alarms once specific switching points are reached. The switch positions can be easily adjusted even under live process conditions.
- Extreme Temperature Resistance: While standard units are highly durable, specialised high-temperature variants are available to handle demanding operating conditions up to 300°C (570°F).
- Hazardous Area Compliance: For potentially explosive atmospheres, devices can be ordered with ATEX approvals in both intrinsically-safe (Ex i) and explosion-proof (Ex d) configurations.
- Customisable Local Indication: Users can choose between a standard linear scale with up to two visual alarm limits or a specialised dial indicator for specific flow unit readings.
- Zero Maintenance: Designed for rigorous industrial use, these flow controllers are virtually maintenance-free.
Applications and Industries:
Krohne Marshall’s mechanical flow controllers are highly versatile. They are widely utilised for general flow detection, cooling systems, pump protection, lubrication control, and cavitation alarms. These controllers have been operating reliably across a multitude of sectors, including petrochemical, oil and gas, chemical, water and wastewater, and air-conditioning (HVAC) industries.
