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Select a Pump
Diaphragm Pumps
Low Pressure, Medium Pressure,
High Pressure & Poly
Low Pressure Diaphragm Pumps
"We like the DP-43 because it is lightweight, easy
to maintain and capable of high enough pressures
for spraying hard to reach places,"
Ellis Jones, Equipment Manager
Oldham Chemicals Company, Inc.
Memphis, TN.
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 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.
 The 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.
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 & Vice President
Rubber-Kennedy Ag, LP
Salinas, CA.
Patented Technology
Features:
 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.
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-P
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FEATURES:
- 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.
Hide Features
SPECIFICATIONS:
| 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 |
Hide Specifications
OPTIONS:
- Includes gearbox for 3.5 and 5 HP engines, has a ¾" sold shaft, and does not include a regulator. (DP-43-GRP)
Hide Options
ACCESSORIES:
- Spray guns and lances
- Pressure Regulator (SC-1066-2)
- Gearbox for 3.5 and 5 HP engines (DP-318697)
- Pump equipped with crankshaft flange, must order shaft separately (DP-318793 for 3/4" solid shaft) or (DP-318950 1" solid shaft)
- Female 1 3/8" shaft kit (DP-310088)
- Male 1 3/8" shaft kit (DP-310049)
- Hydraulic adaptor kit SAE "B" (DP-31874897)
Hide Accessories
Poly Diaphragm Pump
DP-193-PP
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FEATURES:
- 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.
Hide Features
SPECIFICATIONS:
| 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.
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19.8 |
218 |
550 |
2.8 |
140°F |
1 1/2" Hose |
1" NPT |
24.2 |
30 SAE |
Hide Specifications
Poly Diaphragm Pump
DP-282-P
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FEATURES:
- 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.
Hide Features
SPECIFICATIONS:
| 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.
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28.2 |
218 |
550 |
4.1 |
140°F |
1 1/2" Hose |
1" NPT |
41.8 |
30 SAE |
Hide Specifications
Poly Diaphragm Pump
DP-332-P
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FEATURES:
- 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.
Hide Features
SPECIFICATIONS:
| 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 |
Hide Specifications
Poly Diaphragm Pump
DP-448-P
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FEATURES:
- 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.
Hide Features
SPECIFICATIONS:
| 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 |
Hide Specifications
Poly Diaphragm Pump
DP-555-P
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FEATURES:
- 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.
Hide Features
SPECIFICATIONS:
| 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 |
Hide Specifications
Poly Diaphragm Pump
DP-605.2-P
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FEATURES:
- 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.
Hide Features
SPECIFICATIONS:
| 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-602.5-P |
6 diaphragms. Through Shaft 1 3/8" 6-spline opposite end. Negative pressure - max: 4.9 ft; intermittent: 9.8 ft. |
67.1 |
218 |
550 |
9.4 |
140°F |
2" Hose |
1 1/4" NPT |
85.8 |
30 SAE |
Hide Specifications
Low Pressure Diaphragm Pump
DP-43
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FEATURES:
- Semi-hydraulic diaphragm pump.
- Ideal for gardening, small sprayers, washers and liquid transfer.
- Compact and lightweight.
- Can be driven by PTO, electric motor or gasoline engine.
- Wetted parts are plastic coated to withstand today's agricultural chemicals.
- Diaphragms are constructed from chemical resistant elastomers for excellent corrosion resistance.
Hide Features
SPECIFICATIONS:
Low Pressure Diaphragm Pump
DP-43 |
| 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 |
2 diaphragms. Can be PTO, gasoline, or electric driven motor. |
4.3 |
290 |
650 |
1.0 @ 550 RPM & 290 PSI |
140°F |
3/4" Hose |
1/2" NPT |
12.32 |
30 SAE |
Hide Specifications
OPTIONS:
DP-43-GRI – includes gearbox for 3.5 and 5 HP engines and regulator with (2) outlets and shut-off valve.
DP-43-GRI-2.2 – Includes gearbox for 2.2 HP Honda engine with (2) outlets and shutoff valve.
(delete DP-43-3/4 SP)
- Includes gearbox for 3.5 and 5 HP engines and regulator with (2) outlets and shut-off valve. (DP-43-GRI)
- Includes gearbox for 2.2 HP Honda engine with (2) outlets and shut-off valve. (DP-43-GRI-2.2)
- Poly Pump with total chemical resistance to harsh chemicals and fertilizers. Has ¾" solid shaft. (DP-43-P)
- Poly pump includes gearbox for 3.5 and 5 HP engines, has a ¾" solid shaft and does not include a regulator. The DP-43-GRP has total chemical resistance to harsh chemicals and fertilizers. (DP-43-GRP)
Hide Options
ACCESSORIES:
- Spray guns and lances
- Pressure Regulator (SC-1066-2)
- Gearbox for 3.5 and 5 HP engines (DP-318697)
- Pump equipped with crankshaft flange, must order shaft separately (DP-318793 for 3/4" solid shaft) or (DP-318950 1" solid shaft)
- Female 1 3/8" shaft kit (DP-310088)
- Male 1 3/8" shaft kit (DP-310049)
- Hydraulic adaptor kit SAE "B" (DP-31874897)
Hide Accessories
Medium Pressure Diaphragm Pump
DP-74.1
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FEATURES:
- 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.
Hide Features
SPECIFICATIONS:
| 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 |
Hide Specifications
OPTIONS:
- Includes gear box for 3.5 and 5 HP engine and regulator with (2) outlets and shut-off valve. (DP-74.1-GRI)
Hide Options
Medium Pressure Diaphragm Pump
DP-90.1
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FEATURES:
- 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.
Hide Features
SPECIFICATIONS:
| 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 |
Hide Specifications
OPTIONS:
- Includes gear box for 3.5 and 5 HP engine and regulator with (2) outlets and shut-off valve. Add -GRI (DP-90.1-GRI) after part number.
Hide Options
Medium Pressure Diaphragm Pump
DP-139
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FEATURES:
- 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.
Hide Features
SPECIFICATIONS:
| 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 |
Hide Specifications
ACCESSORIES:
- Spray guns and lances
- Pressure regulator (SC-1132-2) or (SC-1240-3)
- Gearbox for 3.5 and 5 HP engines (DP-318697)
- Gearbox for 8 and 11 HP engines (DP-318724)
- 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)
- Hydraulic adaptor kit SAE "B" (DP-31874897)
Hide Accessories
Medium Pressure Diaphragm Pump
DP-185.1
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FEATURES:
- 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.
Hide Features
SPECIFICATIONS:
| 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 |
Hide Specifications
ACCESSORIES:
- Spray guns and lances
- Pressure regulator (SC-1240-3)
- Gearbox for 8 and 11 HP engines (DP-318724)
- 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)
- Hydraulic adaptor kit SAE "B" (DP-31874897)
Hide Accessories
High Pressure Diaphragm Pump
DP-230.1
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FEATURES:
- 3 and 4-diaphragm designs.
- Ideal for air blast sprayers, poultry house washers and industrial machinery.
- Unique pulsation dampening system with 34 holes that absorbs pulsation pressure on all pistons equally.
- 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.
Hide Features
SPECIFICATIONS:
| 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 |
Hide Specifications
High Pressure Diaphragm Pump
DP-392.1
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FEATURES:
- 3 and 4-diaphragm designs.
- Ideal for air blast sprayers, poultry house washers and industrial machinery.
- Unique pulsation dampening system with 34 holes that absorbs pulsation pressure on all pistons equally.
- 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.
Hide Features
SPECIFICATIONS:
| 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-392.1 |
4 diaphragms. Through Shaft with 1 3/8" spline both ends. |
39.2 |
725 |
550 |
20.1 |
140°F |
1 1/2" Hose |
3/4" NPT |
105.0 |
30 SAE |
Hide Specifications
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