Phone 503-210-5050 
Medium Pressure Diaphragm Pump - 1" HB Inlet x 1/2" NPT Outlet CDS John Blue DP-74.1
3-diaphragm design.
Ideal for agriculture and industrial use including horticulture, lawn care, nursery, car wash, air blast orchard/vineyard and poultry houses.
Various mounting options that make them convenient to mount on sprayers with a PTO drive or can be equipped with either gasoline, electric or hydraulic motors.
All fluid ends are anodized aluminum.
Check valves are stainless steel, ideal for protection against most harsh chemicals and abrasion.
All moving parts are completely submerged in oil, which increases the reliability of the pump.
Diaphragms are constructed from chemical resistant elastomers that ensure a long pump life even when used with aggressive chemicals. The John Blue Medium Diaphragm Pumps are available in a three diaphragm design. These pumps are ideal for agriculture and industrial use including horticulture, lawn care, nursery, car wash, air blast orchard/vineyard and poultry houses. These Medium Pressure Diaphragm Pumps have various mounting options that make them convenient to mount on sprayers with a PTO drive or can be equipped with either gasoline, electric or hydraulic motors. All fluid ends are anodized aluminum and the check valves are stainless steel, ideal for protection against most harsh chemicals and abrasion. All moving parts are completely submerged in oil, which increases the reliability of the pump. The diaphragms are constructed from chemical resistant elastomers that ensure a long pump life even when used with aggressive chemicals.
Features & Benefits:
Ball bearings on the crankshaft for increased life.
Exclusive stainless steel check valve design ensures perfect sealing performance due to its unique spherical shaped poppet and conical seat.
Features a uniquely shaped piston to reduce wear against the diaphragm.
Medium-Pressure Diaphragm Pumps perform from 7.4 to 18.5 GPM with pressure ratings from 0 to 580 PSI.
The pump’s design delivers high volumetric efficiencies and more pumping capacity.
Three-piston semi-hydraulic diaphragm pumps ensure a smoother, quieter operation.
Convenient visual oil-level indicator.
Pumps can be run dry. Weight (lbs.): 16, Material: Poly, Operation Manual: John Blue DP-74.1 Operation Manual, Gasket Material: Viton, Inlet: 1" HB Inlet, Outlet: 1/2" NPT Outlet, Horsepower: 2.5, Maximum (RPM): 550, Maximum Temperature (F°): 140, Maximum Flow Rate (GPM): 7.4, Maximum Pressure (PSI): 580
Most items are generally shipped with FedEx or UPS.
During checkout, please provide a phone number in case the shipping carrier needs to reach you for your delivery.
Large or Heavy Items:
Large or heavy items are shipped with a freight carrier.
During checkout, please provide a phone number as freight
carriers will contact you for a delivery appointment.
Please allow an additional 3-5 days for freight deliveries.
Delivery Time Frame:
Most items ship in 1 to 3 days. If you need a delivery estimate
for large or heavy items, feel free to contact us here
3-diaphragm design.
Ideal for agriculture and industrial use including horticulture, lawn care, nursery, car wash, air blast orchard/vineyard and poultry houses.
Various mounting options that make them convenient to mount on sprayers with a PTO drive or can be equipped with either gasoline, electric or hydraulic motors.
All fluid ends are anodized aluminum.
Check valves are stainless steel, ideal for protection against most harsh chemicals and abrasion.
All moving parts are completely submerged in oil, which increases the reliability of the pump.
Diaphragms are constructed from chemical resistant elastomers that ensure a long pump life even when used with aggressive chemicals. The John Blue Medium Diaphragm Pumps are available in a three diaphragm design. These pumps are ideal for agriculture and industrial use including horticulture, lawn care, nursery, car wash, air blast orchard/vineyard and poultry houses. These Medium Pressure Diaphragm Pumps have various mounting options that make them convenient to mount on sprayers with a PTO drive or can be equipped with either gasoline, electric or hydraulic motors. All fluid ends are anodized aluminum and the check valves are stainless steel, ideal for protection against most harsh chemicals and abrasion. All moving parts are completely submerged in oil, which increases the reliability of the pump. The diaphragms are constructed from chemical resistant elastomers that ensure a long pump life even when used with aggressive chemicals.
Features & Benefits:
Ball bearings on the crankshaft for increased life.
Exclusive stainless steel check valve design ensures perfect sealing performance due to its unique spherical shaped poppet and conical seat.
Features a uniquely shaped piston to reduce wear against the diaphragm.
Medium-Pressure Diaphragm Pumps perform from 7.4 to 18.5 GPM with pressure ratings from 0 to 580 PSI.
The pump’s design delivers high volumetric efficiencies and more pumping capacity.
Three-piston semi-hydraulic diaphragm pumps ensure a smoother, quieter operation.
Convenient visual oil-level indicator.
Pumps can be run dry. Weight (lbs.): 16, Material: Poly, Operation Manual: John Blue DP-74.1 Operation Manual, Gasket Material: Viton, Inlet: 1" HB Inlet, Outlet: 1/2" NPT Outlet, Horsepower: 2.5, Maximum (RPM): 550, Maximum Temperature (F°): 140, Maximum Flow Rate (GPM): 7.4, Maximum Pressure (PSI): 580
Most items are generally shipped with FedEx or UPS.
During checkout, please provide a phone number in case the shipping carrier needs to reach you for your delivery.
Large or Heavy Items:
Large or heavy items are shipped with a freight carrier.
During checkout, please provide a phone number as freight
carriers will contact you for a delivery appointment.
Please allow an additional 3-5 days for freight deliveries.
Delivery Time Frame:
Most items ship in 1 to 3 days. If you need a delivery estimate
for large or heavy items, feel free to contact us here
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