Pneumatic Products, Air Treatment (FRL)

Filter/Regulator Model 651

  • High flow capacity at low pressure drop
  • Constant output pressure
  • Easy replacement of filter element


Model 651 combine a filter, regulator and flat gauge for optimal performance. The filter will efficiently remove any moisture or debris and the regulator provides a controlled and consistent air pressure. Thanks to its compact design, it is perfect in applications where space is limited. Model 651, piggyback, for compressed air systems withstand up to 16 bar (232 PSI) inlet pressure. It features a polycarbonate bowl, easily visible level indicators, flexible rolling diaphragm for extended life and a locking device.

Application: Virtually every industry, e.g. manufacturing, food, processing, carpentry, paper mills, etc., relies on compressed air as an energy source. In a shared compressed air network, with numerous outlets and an extensive pipework system, air preparation units are especially important.


For larger sizes refer to Model 652 and Model 160. Additional air treatment products are available in our air treatment range, including preassembled units.

Part No. A B C D E F G H I K
19 503 1402195031402 240 50 77.5 182 G 1/8" G 1/8" 61.4 58 29 G 1/4"
19 503 1412195031412 240 50 77.5 182 G 1/8" G 1/8" 61.4 58 29 G 1/4"
Filter/Regulators Part No. Connection Bowl capacity Filtration Controlled pressure Max flow
  19 503 1402 195031402G 1/4"4 cl25 µm0.5 - 10 bar (7-145 PSI)2300 l/min (81.2 CFM)
 19 503 1412 195031412G 1/4"4 cl5 µm0.5 - 10 bar (7-145 PSI)2200 l/min (77.7 CFM)


Check with an authorized CEJN distributor for availability and prices. Other connections and sealing material on request. Some part numbers may be subject to minimum order quantities. CEJN reserves the right to make changes without further notification. Thread connections are listed according to ISO Standards.
Technical data
Media: Compressed air, neutral gas
Max. working pressure @ 23°C: 16 bar (232 PSI)
Temperature range: -20°C — +50°C (-4°F — +122°F)
Filtering element: Sintered polyethylene
Material body: Aluminum
Material bowl: Polycarbonate
Condensate drain: Semi-automatic
Controlled pressure: 0.5-10 bar (7-145 PSI)
Hysterisis: 0.3 bar (4 PSI)
Regulating device: Rolling diaphragm (very low hysterisis)
Material seal: Nitrile

Flow capacity is measured at 91.4 PSI (6.3 bar) inlet pressure, and pressure drop at 14.5 PSI (1 bar). Nominal flow - ISO 6358 Air purity class according to ISO 8573-1:2010

Air Flow
Outlet pressure, bar (PSI) Filter/Regulator Model 651 Flow, l/min. (CFM)

Available files for download

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