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CDS-John Blue DP-291 High Pressure Diaphragm Pump

Sale: $1,439.98
Save: 30% off

CDS-John Blue High Pressure Diaphragm Pumps



  • Oversized and separate suction and pressure circuits that create a smooth flow of the liquid without any pressure loss
  • Convenient visual oil-level sight indicator. The oil tank is fitted with a pre-deformed diaphragm that ensures correct oil level
  • Special Dacromet treatment on the head bolts and mounting rails provide superior corrosion resistance and no maintenance
  • Reduced stroke length increases diaphragm life because the diaphragms are not stressed
  • Unique pulsation damper system absorbs pressure on all circuits resulting in a smoother flow of product. This unique technology provides dampening on 32 circuits instead of one, which reduces vibrations and allows for smooth operation
  • Four diaphragm material options are available
  • New check valve design - unique spherical shaped poppet and conical seat made of stainless steel ensures perfect sealing while delivering high volumetric efficiencies and more pumping capacity
  • Pre-set diaphragm bolt and diaphragm washer are made of 316 stainless steel. This exclusive feature of the CDS-John Blue Diaphragm High Pressure Pumps results in better chemical resistance and longer life of the pump
  • Each piston has two piston rings for improved piston seal to keep a film of oil between the piston and diaphragm

  • Max Flow: 23.0 GPM @ 29 PSI
  • Max Pressure: 725 PSI
  • Max Speed: 550 RPM
  • Max Power: 11.6 HP
  • Diaphragms: 3
  • Suction Hose Diameter: 1 1/2" Hose
  • Discharge Hose Diameter: 3/4" NPT
  • Max Temperature: 140°F
  • Lubricating Oil Type: 30 SAE
  • Through shaft with 1 3/8" spline both ends

    Recommended Accessories:
  • Pressure Regulator: SC-1480-3
  • This item is not kept in stock, and will have to be ordered in from the manufacturer when order is placed. Order will be direct shipped from the manufacturer when possible.

    More Information
    Click here for CDS-John Blue Catalog
    Click here for CDS-John Blue Manual Information

California Proposition 65 Information and Warnings
State of California Proposition 65 Warnings

Items listed on this site are Known to the State of California to cause [Cancer] [Birth Defects or other Reproductive Harm.

Add to Cart:

  • Model: DP-291
  • Shipping Weight: 55.6242lbs
  • Manufactured by: CDS-John Blue

This product was added to our catalog on Thursday 01 December, 2011.