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Diaphragm Spray Pumps and Poly Spray Pumps

High Pressure, Medium Pressure, and Low Pressure for Agricultural and Industrial Sprayer Applications

Low Pressure Poly Diaphragm Pumps

“We can sell a poly pump in any application. It doesn’t require my salespeople to have knowledge of the products going through the pump – the pump will work.”

Mark Kennedy, Partner and Vice President
Green Rubber – Kennedy Ag, LP, Salinas, CA

The CDS-John Blue 2-piston, semi-hydraulic, Diaphragm Pump is ideal for gardening, small sprayers, washers, and liquid transfer. It's compact and lightweight and can be driven by PTO, electric motor, or gasoline engine, depending on your specific application needs. All wetted parts are plastic coated to withstand today's agricultural and industrial chemicals. The diaphragms are constructed from chemical resistant elastomers for excellent corrosion resistance.

Medium Pressure Diaphragm Pumps

“The CDS-John Blue Diaphragm Pumps run smoother
and are much more heavily built than previous pumps. We
have used CDS-John Blue Diaphragm Pumps and have found
the quality of the pumps to be superior.”


Mickey O'Neill, Vice President Sales and Marketing
Wylie Manufacturing, Lubbock, TX.

CDS-John Blue Medium Pressure Diaphragm PumpThe CDS-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.

High Pressure Diaphragm Pumps

The CDS-John Blue High Pressure Diaphragm Pumps are an excellent choice for high-pressure sprayers, such as air blast sprayers and poultry house washers and industrial machinery. These three and four diaphragm semi hydraulic diaphragm pumps are designed to ensure a perfect mechanical balance and better volumetric distribution of the liquid. The CDS-John Blue High Pressure Diaphragm Pumps are factory equipped with the unique pulsation dampening system with 34 holes that absorbs pulsation pressure on all pistons equally.

All fluid end-housing components are anodized aluminum. The valves are stainless steel with exclusive spheric section shaped design for perfect sealing. Our diaphragms are made from chemical resistant elastomers, which increases the pump's life even when they are used with aggressive agricultural and industrial chemicals.

Patented Technology Features

  1. Poly Diaphragm Pump Cut-awayThe heads are designed with a patented technology that includes an aluminum die-cast core inside a polypropylene structure offering superior strength.
  2. Washers and diaphragm bolts are in 316 stainless steel, an exclusive feature.
  3. Die cast crankcase incorporating a new cooling system.
  4. New chemically resistant diaphragm material pre-deformed to reduce the amount of deflection, increasing diaphragm life. The diaphragm material is compatible with most of the corrosive chemicals on the market today.
  5. A short crankshaft stroke means the longest life possible.
  6. New connecting rods in special bronze alloy offer economical and trouble free service.
  7. 316 stainless steel inlet and outlet check valves.

Exclusive Technology: Pumps come standard with internal pressure dampener. Standard, interchangeable parts for reduced inventory and best service. Full range: 2, 3, 4, 5, 6 diaphragms available.

Poly Diaphragm Pump
DP-43.1-GRP
Poly Diaphragm Pump
FEATURES:   <hide>
  • The heads are designed with a patented technology that includes an aluminum die-cast core inside a polypropylene structure offering superior strength.
  • Washers and diaphragm bolts are in 316 stainless steel, an exclusive feature.
  • Die cast crankcase incorporating a new cooling system.
  • New chemically resistant diaphragm material pre-deformed to reduce the amount of deflection, increasing diaphragm life. The diaphragm material is compatible with most of the corrosive chemicals on the market today.
  • A short crankshaft stroke means the longest life possible.
  • New connecting rods in special bronze alloy offer economical and trouble free service.
  • 316 stainless steel inlet and outlet check valves.
SPECIFICATIONS:   <hide>
Model Description Max Flow GPM Max Pres. PSI Max Speed RPM Max Power HP Max Temp. °F Suct. Hose Diam. Disch. Hose Diam. Weight LB Lube Oil
DP-43-P 2 diaphragms. Can be PTO, gasoline engine electric motor driven. 4.3 290 650 1.0 140°F 3/4” Hose 1/2” NPT 12.3 30 SAE
OPTIONS:   <hide>
  • DP-43-GRIP - Poly pump includes gearbox for 3.5 and 5 HP engines and regulator with (2) outlets and shut-off valve.
  • DP-43-GRIP-2.2 - Poly pump includes gearbox for 2.2 HP Honda engine with (2) outlets and shut-off valve.
  • DP-43.1-GRP - Poly pump includes gearbox for 3.5 and 5 HP engines, has a 3/4” solid shaft and does not include a regulator.
ACCESSORIES:   <hide>
  • Spray guns and lances.
  • SC-1066-2 - Pressure Regulator.
  • DP-321009 - Gearbox for 3.5 and 5 HP engines.
  • Pump equipped with crankshaft flange, must order shaft separately (DP-318793 for 3/4” solid shaft) or (DP-318950 1” solid shaft).
  • DP-310088 - Female 1-3/8” shaft kit.
  • DP-310049 - Male 1-3/8” shaft kit.
  • DP-31874897 - Hydraulic adaptor kit SAE “B”.
DOCUMENTATION:   <hide>

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Poly Diaphragm Pump
DP-193-PP
Poly Diaphragm Pump
FEATURES:   <hide>
  • The heads are designed with a patented technology that includes an aluminum die-cast core inside a polypropylene structure offering superior strength.
  • Washers and diaphragm bolts are in 316 stainless steel, an exclusive feature.
  • Die cast crankcase incorporating a new cooling system.
  • New chemically resistant diaphragm material pre-deformed to reduce the amount of deflection, increasing diaphragm life. The diaphragm material is compatible with most of the corrosive chemicals on the market today.
  • A short crankshaft stroke means the longest life possible.
  • New connecting rods in special bronze alloy offer economical and trouble free service.
  • 316 stainless steel inlet and outlet check valves.
SPECIFICATIONS:   <hide>
Model Description Max Flow GPM Max Pres. PSI Max Speed RPM Max Power HP Max Temp. °F Suct. Hose Diam. Disch. Hose Diam. Weight LB Lube Oil
DP-193-PP 3 diaphragms. Drive shaft 1” diameter (one side only). Negative pressure - max: 4.9 ft; intermittent: 9.8 ft. 19.8 218 550 2.8 140°F 1-1/2” Hose 1” NPT 24.2 30 SAE
OPTIONS:   <hide>
  • N/A
DOCUMENTATION:   <hide>

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Poly Diaphragm Pump
DP-282-P
Poly Diaphragm Pump
FEATURES:   <hide>
  • The heads are designed with a patented technology that includes an aluminum die-cast core inside a polypropylene structure offering superior strength.
  • Washers and diaphragm bolts are in 316 stainless steel, an exclusive feature.
  • Die cast crankcase incorporating a new cooling system.
  • New chemically resistant diaphragm material pre-deformed to reduce the amount of deflection, increasing diaphragm life. The diaphragm material is compatible with most of the corrosive chemicals on the market today.
  • A short crankshaft stroke means the longest life possible.
  • New connecting rods in special bronze alloy offer economical and trouble free service.
  • 316 stainless steel inlet and outlet check valves.
SPECIFICATIONS:   <hide>
Model Description Max Flow GPM Max Pres. PSI Max Speed RPM Max Power HP Max Temp. °F Suct. Hose Diam. Disch. Hose Diam. Weight LB Lube Oil
DP-282-P 3 diaphragms. Through input shaft: 1” diameter one end, 1-3/8” 6-spline opposite end. Negative pressure - max: 4.9 ft; intermittent: 9.8 ft. 28.2 218 550 4.1 140°F 1-1/2” Hose 1” NPT 41.8 30 SAE
OPTIONS:   <hide>
  • N/A
ACCESSORIES:   <hide>
DOCUMENTATION:   <hide>

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Poly Diaphragm Pump
DP-332-P
Poly Diaphragm Pump
FEATURES:   <hide>
  • The heads are designed with a patented technology that includes an aluminum die-cast core inside a polypropylene structure offering superior strength.
  • Washers and diaphragm bolts are in 316 stainless steel, an exclusive feature.
  • Die cast crankcase incorporating a new cooling system.
  • New chemically resistant diaphragm material pre-deformed to reduce the amount of deflection, increasing diaphragm life. The diaphragm material is compatible with most of the corrosive chemicals on the market today.
  • A short crankshaft stroke means the longest life possible.
  • New connecting rods in special bronze alloy offer economical and trouble free service.
  • 316 stainless steel inlet and outlet check valves.
SPECIFICATIONS:   <hide>
Model Description Max Flow GPM Max Pres. PSI Max Speed RPM Max Power HP Max Temp. °F Suct. Hose Diam. Disch. Hose Diam. Weight LB Lube Oil
DP-332-P 3 diaphragms. Through input shaft: 1” diameter one end, 1-3/8” 6-spline opposite end. Negative pressure - max: 4.9 ft; intermittent: 9.8 ft. 33.3 218 550 4.8 140°F 1-1/2” Hose 1” NPT 41.8 30 SAE
OPTIONS:   <hide>
  • N/A
ACCESSORIES:   <hide>
DOCUMENTATION:   <hide>

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Poly Diaphragm Pump
DP-448-P
Poly Diaphragm Pump
FEATURES:   <hide>
  • The heads are designed with a patented technology that includes an aluminum die-cast core inside a polypropylene structure offering superior strength.
  • Washers and diaphragm bolts are in 316 stainless steel, an exclusive feature.
  • Die cast crankcase incorporating a new cooling system.
  • New chemically resistant diaphragm material pre-deformed to reduce the amount of deflection, increasing diaphragm life. The diaphragm material is compatible with most of the corrosive chemicals on the market today.
  • A short crankshaft stroke means the longest life possible.
  • New connecting rods in special bronze alloy offer economical and trouble free service.
  • 316 stainless steel inlet and outlet check valves.
SPECIFICATIONS:   <hide>
Model Description Max Flow GPM Max Pres. PSI Max Speed RPM Max Power HP Max Temp. °F Suct. Hose Diam. Disch. Hose Diam. Weight LB Lube Oil
DP-448-P 4 diaphragms. Through Shaft: 1-3/8” 6-spline both ends. Negative pressure - max: 4.9 ft; intermittent: 9.8 ft. 44.9 218 550 6.5 140°F 2” Hose 1” NPT 57.2 30 SAE
OPTIONS:   <hide>
  • N/A
DOCUMENTATION:   <hide>

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Poly Diaphragm Pump
DP-555-P
Poly Diaphragm Pump
FEATURES:   <hide>
  • The heads are designed with a patented technology that includes an aluminum die-cast core inside a polypropylene structure offering superior strength.
  • Washers and diaphragm bolts are in 316 stainless steel, an exclusive feature.
  • Die cast crankcase incorporating a new cooling system.
  • New chemically resistant diaphragm material pre-deformed to reduce the amount of deflection, increasing diaphragm life. The diaphragm material is compatible with most of the corrosive chemicals on the market today.
  • A short crankshaft stroke means the longest life possible.
  • New connecting rods in special bronze alloy offer economical and trouble free service.
  • 316 stainless steel inlet and outlet check valves.
SPECIFICATIONS:   <hide>
Model Description Max Flow GPM Max Pres. PSI Max Speed RPM Max Power HP Max Temp. °F Suct. Hose Diam. Disch. Hose Diam. Weight LB Lube Oil
DP-555-P 5 diaphragms. Through Shaft 1-3/8” 6-spline opposite ends. Negative pressure - max: 4.9 ft; intermittent: 9.8 ft. 55.5 218 550 8.0 140°F 2” Hose 1” NPT 72.6 30 SAE
OPTIONS:   <hide>
  • N/A
DOCUMENTATION:   <hide>

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Poly Diaphragm Pump
DP-687-P (Replaces DP-605.2-P)
Poly Diaphragm Pump
FEATURES:   <hide>
  • The heads are designed with a patented technology that includes an aluminum die-cast core inside a polypropylene structure offering superior strength.
  • Washers and diaphragm bolts are in 316 stainless steel, an exclusive feature.
  • Die cast crankcase incorporating a new cooling system.
  • New chemically resistant diaphragm material pre-deformed to reduce the amount of deflection, increasing diaphragm life. The diaphragm material is compatible with most of the corrosive chemicals on the market today.
  • A short crankshaft stroke means the longest life possible.
  • New connecting rods in special bronze alloy offer economical and trouble free service.
  • 316 stainless steel inlet and outlet check valves.
SPECIFICATIONS:   <hide>
Model Description Max Flow GPM Max Pres. PSI Max Speed RPM Max Power HP Max Temp. °F Suct. Hose Diam. Disch. Hose Diam. Weight LB Lube Oil
DP-687-P 6 diaphragms. Through Shaft 1-3/8” 6-spline opposite end. Negative pressure - max: 4.9 ft; intermittent: 9.8 ft. 68.7 218 550 9.4 140°F 2” Hose 1-1/4” NPT 85.8 30 SAE
OPTIONS:   <hide>
  • N/A
DOCUMENTATION:   <hide>

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Medium Pressure Diaphragm Pump
DP-74.1
Medium Pressure Diaphragm Pump
FEATURES:   <hide>
  • 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.
SPECIFICATIONS:   <hide>
Model Description Max Flow GPM Max Pres. PSI Max Speed RPM Max Power HP Max Temp. °F Suct. Hose Diam. Disch. Hose Diam. Weight LB Lube Oil
DP-74.1 3 diaphragms. Can be PTO mounted, gasoline engine, hydraulic motor, or electric motor driven. 7.4 580 550 2.5 140°F 1” Hose 1/2” NPT 16.0 30 SAE
OPTIONS:   <hide>
  • DP-74.1-GRI - Includes gear box for 3.5 and 5 HP engine and regulator with (2) outlets and shut-off valve.
ACCESSORIES:   <hide>
DOCUMENTATION:   <hide>

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Medium Pressure Diaphragm Pump
DP-90.1
Medium Pressure Diaphragm Pump
FEATURES:   <hide>
  • 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.
SPECIFICATIONS:   <hide>
Model Description Max Flow GPM Max Pres. PSI Max Speed RPM Max Power HP Max Temp. °F Suct. Hose Diam. Disch. Hose Diam. Weight LB Lube Oil
DP-90.1 3 diaphragms. Can be PTO mounted, gasoline engine, hydraulic motor, or electric motor driven. 9.0 @ 550 RPM, 10.6 @ 650 RPM 580 650 4.0 140°F 1” Hose 1/2” NPT 17.0 30 SAE
OPTIONS:   <hide>
  • DP-90.1-GRI - Includes gear box for 3.5 and 5 HP engine and regulator with (2) outlets and shut-off valve.
ACCESSORIES:   <hide>
DOCUMENTATION:   <hide>

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Medium Pressure Diaphragm Pump
DP-139
Medium Pressure Diaphragm Pump
FEATURES:   <hide>
  • 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.
SPECIFICATIONS:   <hide>
Model Description Max Flow GPM Max Pres. PSI Max Speed RPM Max Power HP Max Temp. °F Suct. Hose Diam. Disch. Hose Diam. Weight LB Lube Oil
DP-139 3 diaphragms 13.9 @ 550 RPM & 145 PSI 580 550 5.6 140°F 1-1/4” Hose 1/2” NPT 30.8 30 SAE
OPTIONS:   <hide>
  • N/A
ACCESSORIES:   <hide>
DOCUMENTATION:   <hide>

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Medium Pressure Diaphragm Pump
DP-185.1
Medium Pressure Diaphragm Pump
FEATURES:   <hide>
  • 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.
SPECIFICATIONS:   <hide>
Model Description Max Flow GPM Max Pres. PSI Max Speed RPM Max Power HP Max Temp. °F Suct. Hose Diam. Disch. Hose Diam. Weight LB Lube Oil
DP-185.1 3 diaphragms 18.5 @ 145 PSI 580 550 7.4 140°F 1-1/4” Hose 3/4” NPT 33.0 30 SAE
OPTIONS:   <hide>
  • N/A
ACCESSORIES:   <hide>
  • Spray guns and lances.
  • SC-1240-3 - Pressure regulator.
  • DP-318724 - Gearbox for 8 and 11 HP engines.
  • Pump has crankshaft flange on one side, 1-3/8” spline shaft opposite side. Must order solid shaft separately (DP-318793 for 3/4” solid shaft) or (DP-318590 for 1” solid shaft).
  • DP-31874897 - Hydraulic adaptor kit SAE “B”.
DOCUMENTATION:   <hide>

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High Pressure Diaphragm Pump
DP-230.1
High Pressure Diaphragm Pump
FEATURES:   <hide>
  • 3-diaphragm designs.
  • Ideal for air blast sprayers, poultry house washers and industrial machinery.
  • All fluid end-housing components are anodized aluminum.
  • Valves are stainless steel with exclusive spheric section shaped design for perfect sealing.
  • Diaphragms are made from chemical resistant elastomers, which increases the pump's life even when they are used with aggressive agricultural and industrial chemicals.
SPECIFICATIONS:   <hide>
Model Description Max Flow GPM Max Pres. PSI Max Speed RPM Max Power HP Max Temp. °F Suct. Hose Diam. Disch. Hose Diam. Weight LB Lube Oil
DP-230.1 3 diaphragms. Through Shaft with 1-3/8” spline both ends. 23.0 @ 29 PSI 725 550 11.6 140°F 1-1/2” Hose 3/4” NPT 55.6 30 SAE
OPTIONS:   <hide>
  • N/A
DOCUMENTATION:   <hide>

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High Pressure Diaphragm Pump
DP-407.1
High Pressure Diaphragm Pump
FEATURES:   <hide>
  • 4-diaphragm designs.
  • Ideal for air blast sprayers, poultry house washers and industrial machinery.
  • All fluid end-housing components are anodized aluminum.
  • Valves are stainless steel with exclusive spheric section shaped design for perfect sealing.
  • Diaphragms are made from chemical resistant elastomers, which increases the pump's life even when they are used with aggressive agricultural and industrial chemicals.
SPECIFICATIONS:   <hide>
Model Description Max Flow GPM Max Pres. PSI Max Speed RPM Max Power HP Max Temp. °F Suct. Hose Diam. Disch. Hose Diam. Weight LB Lube Oil
DP-407.1 4 diaphragms. Through Shaft with 1-3/8” spline both ends. 40.7 725 550 20.1 140°F 1-1/2” Hose 3/4” NPT 79.0 30 SAE
OPTIONS:   <hide>
  • N/A
DOCUMENTATION:   <hide>

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