CleanFit COA451

Summary

Product identification

• Product Name: Cleanfit COA451
• Description: Manually operated retractable assembly for water, wastewater and process media.
• Intended Use: For oxygen sensors with a diameter of 40 mm.

Application areas

• Wastewater treatment plants (oxygen control in activated sludge basins, process water treatment and monitoring)
• Water works (drinking water status monitoring, river/lake/sea water quality monitoring)
• Industrial utilities (oxygen control in biological treatment, process water treatment and monitoring)
• Fish farming (oxygen monitoring for optimum growth conditions)

Benefits

• Versatile: "One-for-all" principle simplifies inventory, project handling, and life cycle management.
• Easy Maintenance: Sensor servicing and cleaning without process interruption.
• Robust Design: Process pressure up to 10 bar (145 psi).
• Convenient Operation: Rinse water connection for cleaning without sensor removal.

Operating limits

• Medium Temperature: 0 to 85 °C (32 to 185 °F)
• Medium Pressure: Max. 10 bar (145 psi)
• Manual Insertion/Retraction Pressure: Not to exceed 2 bar (29 psi)
• Ambient Temperature: 0 to 50 °C (32 to 122 °F)

The pressure-temperature ratings are detailed in a graph in the original document. Manual operation is possible within range A.

Installation

• Orientation: Ideally mounted in an ascending pipe; horizontal pipe installation is also possible. Avoid installation in down pipes, where air collects, foam forms, or suspended particles settle.
• Flow Conditions: Install in places with uniform flow. Minimum pipe diameter is DN 80.
• Rinse Chamber: Inflow is always from below. Avoid siphon effect at the rinse chamber outlet.

Mechanical construction

• Dimensions: Drawings and tables are provided in the original document for various configurations, including dimensions dependent on the sensor used (X₀, X₁) and sensor service position (X₂).
• Process Connections:
  • G2" female thread
  • G2" female thread with weld-in adapter
  • Flange DN 50 / PN 16 (EN 1092-1) and flange ANSI 2" / 150 lbs
• Rinse Connection and Vent Cock:
  • Options include ball valves with hose connections (OD 9 mm), customer-supplied G1/8 external thread connections, or G1/8 internal threads.
  • A ball valve is included as a vent cock.
• Weight: 8 to 11 kg (17.6 to 24.3 lbs) depending on version.
• Materials:
  • Wetted: Viton (seals), Stainless steel 1.4404 (AISI 316 L), Nickel-plated brass (vent cock/rinse connection)
  • Not Wetted: Stainless steel 1.4404 (AISI 316 L)

Certificates and approvals

• CE/PED: Manufactured according to good engineering practice as per Article 4, Paragraph 3 of the Pressure Equipment Directive 2014/68/EU. CE label is not required.

Accessories

• Sensors: Oxymax COS41, COS51D, COS61, COS61D.
• Welding Socket: For pipe diameters from 80 mm, with combination flange DN 50 / ANSI 2".
• Welding Nipple: For 2" thread.
• Welding Rinse Socket: For automatic spray cleaning of sensors; up to 6 bar (87 psi), 80 °C (176 °F).
• Service Kits: Ball valve for rinse chamber, O-ring set (Viton + FPM).

Disclaimer This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror