Model 625

SKU: 625

Flow Switch, Inline Body, Ultralow Flow, Adjustable Actuation

The Delta Controls Model 625 detects ultra low flows for 0.125 to 1.0 inch (3.175 to 25. 4 mm) pipelines. It is used for detection additives, oiling, purging, etc with a low pressure drop at 35 times detected flow rate and is field adjustable. It produces On/Off switching action at a preset rate of flow and is used for flow protection, safety monitoring, purging for explosion proofing, etc

The flowing fluid may pass through both the variable piston annulus and/or the bypass valve. A pressure drop is created across the piston due to the flow rate of the fluid. Increasing differential pressure causes the piston to move and compress the range spring. When the piston magnet is carried far enough, the switch magnet is attracted and the output snap switch is actuated. The amount of bypass valve opening determines the flow rate switching point.

Features

  • Detects ultra low flows for 0.125 inch to 1.0 inch pipelines
  • Used for detection additives, oiling, purging, etc
  • Low pressure drop at 35 times detected flow rate
  • Field adjustable

Specifications

  • Style: Inline
  • Type: Piston
  • Temperature: -4 °F to +400 °F (-20 °C to +204 °C)
  • Pressure:
  • Standard: ≤ +2000 psi (≤ +137.9 bar)
  • Actuation: 0.04 gpm to 0.75 gpm (water) 0.18 scfm to 2.7 scfm (air)
  • Deactuation: 0.03 gpm to 0.6 gpm (water) 0.15 scfm to 2.0 scfm (air)
  • Accuracy:≤ 10%
  • Output: SPDT or DPDT, 5 A
  • Available Wetted Materials: 316 Stainless Steel, brass
  • Housing: Stainless Steel, aluminum
  • Process Connection:
  • Threaded: 0.5 in to 1 in FPT
  • Flanged: 1 in
  • Rating: ≤ 150 lb

Certifications & Approvals

  • Stainless Steel Housing Options Only: Third Party Listed by CSA NRTL/C (USA and Canada)

Required Ordering Information

  • Detailed model number
  • Tag or nameplate detail (if required)
  • Documentation/testing tiers (if required, refer to Additional Resources in the product catalog)

Additional Information

Subheader

Flow Switch, Inline Body, Ultralow Flow, Adjustable Actuation

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