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John Blue 68.4 Double PST Pump | NGP9055

5 day lead time
15.00 LBS
Calculated at Checkout
John Blue NGP-9055 Product Manual:
NGP-9055 Product Manual
John Blue NGP-9055 Return Policy:
NGP-9055 Return Policy
Flow Rate (GPM):
50 - 70
Cast Iron
Gasket Material:

John Blue 68.4 Double PST Pump | NGP9055

All John Blue Ag Piston Pumps have been designed, engineered, and extensively field tested to set the standard for liquid metering pumps.


  • Double Piston: Double Acting
  • Stroke: Variable
  • Rated Flow: 68.4 GPM
  • Rated Pressure: 120 PSI
  • Rated Speed: 450 RPM
  • Inlet: 1-1/2" FPT
  • Outlet: 1-1/2" FPT
  • Clutch: No Clutch
  • Apply two products with one piston pump.
  • Use only one drive system.
  • Independently adjustable stroke.
  • 5 to 1 max ratio between pumping heads.
  • Available as a ground driven pump or run hydraulically with Variable Rate.
  • Ideal for starter fertilizer on one side and nitrogen on the other side. For example:
    • 5 GPA starter fertilizer and 5-25 GPA NPK
    • 7 GPA starter fertilizer and 7-35 GPA NPK
  • Comes standard with Viton Piston Packings and Buna o-rings and rod packings. Upgrade option available.

Next Generation Piston Pump Overview: 

  • Inlet and Outlet Flanges make it easier to plumb your system and eliminate leaks with flange fittings. (Add –F after model number).
  • Double piston rod seals work in unison to offer multiple stage protection between the wet end and crankcase.
  • Outboard cylinder plunger packing can be inspected or replaced in the field without removing the hoses.
  • Check Valves are designed for positive seal, easy priming and long life.
  • Single Valve Cap provides easy access to check valves without removing the hoses. Simple to service in the field.
  • Common or Independent Manifolds are available on the double pumps. Independent manifolds allow for dual flow divider usage or half-width application.
  • Main Shaft Seals incorporate a dual wiper that is enclosed in a grease cavity to flush out contamination. This helps to extend the life of the pump.
  • Direct Hydraulic Drive Piston Pumps are available along with standard Ground Drive (DRV) and Variable Rate Hydraulic Drive Kits (VRH).
  • Note: All standard Piston Pumps are cast iron and manufactured with Viton® Piston Packings and Buna O-rings and rod packing's. Most commonly used with liquid fertilizers that have pH greater than 5 and standard herbicides that are compatible with Buna and Viton®. 


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