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John Blue

John Blue Company is a trusted leader in agricultural fertilizer pumps and liquid application equipment. Known for precision and durability, John Blue products are widely used for fertilizer application, anhydrous ammonia (NH₃) systems, irrigation, and chemical injection in row crop operations.

At Barndoor Ag, we carry a selection of John Blue fertilizer pumps and metering solutions, including popular models like the Volt™ Agri-Pump and Single Piston Double Acting Pumps. These pumps are designed to deliver accurate flow rates and consistent nutrient placement, helping growers maximize efficiency and crop performance.

In addition to pumps, John Blue manufactures essential application components such as flow dividers and related fertilizer system accessories. Whether you’re upgrading an existing liquid fertilizer setup or maintaining your NH₃ application system, John Blue equipment is built to perform reliably season after season.

Shop John Blue fertilizer pumps and agricultural application equipment at Barndoor Ag for dependable performance in the field.

John Blue
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sku: PSP-3340-G14V

John Blue 3" Poly Self-Priming Centrifugal Pump W/ 14 HP Electric Start Vangaurd Engine | PSP-3340-G14V

MSRP:

Now: $1,845.93

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John Blue
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sku: CS-200-HA12

John Blue 12 GPM, 105 PSI CS Pump for Hydraulic Drives | CS-200-HA12

MSRP:

Now: $1,499.71

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John Blue
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sku: SMPT-0053

John Blue VisaGage II Liquid Flow Monitor 3/8"³ Tube Push Connect Elbow Adapter | SMPT-0053

MSRP:

Now: $6.55

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John Blue
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sku: SMPT-0052

John Blue VisaGage II Liquid Flow Monitor 5/16"³ Tube Push Connect Elbow Adapter | SMPT-0052

MSRP:

Now: $6.40

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John Blue
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sku: SMPT-0051

John Blue VisaGage II Liquid Flow Monitor 1/4"³ Tube Push Connect Elbow Adapter | SMPT-0051

MSRP:

Now: $6.03

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John Blue
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sku: SMPT-0007

John Blue VisaGage II Liquid Flow Monitor Viton O-Ring | SMPT-0007

MSRP:

Now: $2.43

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John Blue
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sku: PSP-3340-G13H

John Blue 3" Poly SP Centrifugal, 13 HP Honda Gas Electric Start w/ Base | PSP-3340-G13H

MSRP:

Now: $2,212.79

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$John Blue Poly Check Valve, 1/2" Hose Barb Inlet\Outlet | CV-1103-B12$ $John Blue Poly Check Valve, 1/2" Hose Barb Inlet\Outlet | CV-1103-B12$

John Blue
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sku: CV-1103-B12

John Blue Poly Check Valve, 1/2" Hose Barb Inlet\Outlet | CV-1103-B12

MSRP:

Now: $14.64

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John Blue
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sku: CS-150-HY

John Blue 4 GPM, 80 PSI CS Pump for Hydraulic Drives | CS-150-HY

MSRP:

Now: $1,107.48

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John Blue
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sku: CS-150-HA12

John Blue 12 GPM, 115 PSI CS Pump for Hydraulic Drives | CS-150-HA12

MSRP:

Now: $1,425.43

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John Blue
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sku: 115521-01

John Blue O-ring for Top Cover | 115521-01

MSRP:

Now: $1.82

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John Blue
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sku: 115520-01

John Blue Needle | 115520-01

MSRP:

Now: $60.86

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John Blue
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sku: 113717

John Blue Seal Repair Kit for LM-2450 Series Metering Pumps | 113717

MSRP:

Now: $86.87

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John Blue
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sku: NGP-7055

John Blue 34.2 Single PST Pump | NGP-7055

MSRP:

Now: $2,359.99

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John Blue
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sku: SP-3240-G6B

John Blue Cast Iron-2" SP Centrifugal with Briggs Pro Engine | SP-3240-G6B

MSRP:

Now: $940.67

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John Blue
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sku: NGP-7055-HY

John Blue Cast Iron Piston Pump - 2" NPT Inlet x 2" NPT Outlet | NGP-7055-HY

MSRP:

Now: $1,262.59

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John Blue
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sku: SMFD4-NH3

John Blue VisaGage II NH3 Flow Four (4) Monitor Assembly | SMFD4-NH3

MSRP:

Now: $161.88

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John Blue
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sku: SMFD2-NH3

John Blue VisaGage II NH3 Flow Monitor | SMFD2-NH3

MSRP:

Now: $109.47

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John Blue
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sku: SMPT-0061

John Blue VisaGage II 1/2" End Cap Adapter | SMPT-0061

MSRP:

Now: $1.55

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John Blue
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sku: SMSS1

John Blue VisaGage II Single Flow Monitor Assembly | SMSS1

MSRP:

Now: $27.16

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John Blue
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sku: SMFD1

John Blue VisaGage II Single Row Flow Monitor Assembly | SMFD1

MSRP:

Now: $22.53

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John Blue
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sku: SMPT-OSA4

John Blue VisaGage II Four (4) Orifice Selector Kit | SMPT-OSA4

MSRP:

Now: $88.79

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John Blue
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sku: SMPT-0009

John Blue VisaGage II Ball Storage Unit | SMPT-0009

MSRP:

Now: $8.27

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John Blue
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sku: SMPT-0014

John Blue VisaGage II Flow Monitor Tee | SMPT-0014

MSRP:

Now: $8.45

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John Blue
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sku: PSP-3340-G14V

John Blue 3" Poly Self-Priming Centrifugal Pump W/ 14 HP Electric Start Vangaurd Engine | PSP-3340-G14V

John Blue 3" Poly Self-Priming Centrifugal Pump W/ 14 HP Electric Start Vangaurd Engine | PSP-3340-G14V The John Blue PSP-3340-G14V is a portable 3-inch self-priming centrifugal pump powered by a 14...

MSRP:

Now: $1,845.93
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John Blue
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sku: CS-200-HA12

John Blue 12 GPM, 105 PSI CS Pump for Hydraulic Drives | CS-200-HA12

John Blue 12 GPM, 105 PSI CS Pump for Hydraulic Drives | CS-200-HA12 The John Blue CS-200-HA12 is a heavy-duty hydraulic-driven centrifugal spray pump built for high-volume agricultural spraying,...

MSRP:

Now: $1,499.71
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John Blue
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sku: SMPT-0053

John Blue VisaGage II Liquid Flow Monitor 3/8"³ Tube Push Connect Elbow Adapter | SMPT-0053

John Blue VisaGage II Liquid Flow Monitor 3/8″ Tube Push Connect Elbow Adapter | SMPT-0053 The John Blue SMPT-0053 VisaGage® II 3/8" Tube Push Connect Elbow Adapter is a genuine OEM...

MSRP:

Now: $6.55
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John Blue
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sku: SMPT-0052

John Blue VisaGage II Liquid Flow Monitor 5/16"³ Tube Push Connect Elbow Adapter | SMPT-0052

John Blue VisaGage II Liquid Flow Monitor 5/16″ Tube Push Connect Elbow Adapter | SMPT-0051 The John Blue SMPT-0052 VisaGage® II 5/16" Tube Push Connect Elbow Adapter is a genuine OEM...

MSRP:

Now: $6.40
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John Blue
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sku: SMPT-0051

John Blue VisaGage II Liquid Flow Monitor 1/4"³ Tube Push Connect Elbow Adapter | SMPT-0051

John Blue VisaGage II Liquid Flow Monitor 1/4″ Tube Push Connect Elbow Adapter | SMPT-0051 The John Blue SMPT-0051 VisaGage® II 1/4" Tube Push Connect Elbow Adapter is a genuine...

MSRP:

Now: $6.03
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John Blue
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sku: SMPT-0007

John Blue VisaGage II Liquid Flow Monitor Viton O-Ring | SMPT-0007

John Blue VisaGage II Liquid Flow Monitor Viton O-Ring | SMPT-0007 Keep your John Blue VisaGage® II Liquid Flow Monitor operating leak-free with the John Blue SMPT-0007 Viton® O-Ring. This...

MSRP:

Now: $2.43
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John Blue
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sku: PSP-3340-G13H

John Blue 3" Poly SP Centrifugal, 13 HP Honda Gas Electric Start w/ Base | PSP-3340-G13H

John Blue 3" Poly SP Centrifugal, 13 HP Honda Gas Electric Start w/ Base | PSP-3340-G13H The John Blue PSP-3340-G13H is a high-capacity 3-inch self-priming polypropylene centrifugal pump powered by a...

MSRP:

Now: $2,212.79
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$John Blue Poly Check Valve, 1/2" Hose Barb Inlet\Outlet | CV-1103-B12$

John Blue
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sku: CV-1103-B12

John Blue Poly Check Valve, 1/2" Hose Barb Inlet\Outlet | CV-1103-B12

John Blue Poly Check Valve, 1/2" Hose Barb Inlet\Outlet | CV-1103-B12 Prevent fertilizer line drain-back and improve liquid application accuracy with the John Blue Poly Check Valve, 1/2"...

MSRP:

Now: $14.64
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John Blue
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sku: CS-150-HY

John Blue 4 GPM, 80 PSI CS Pump for Hydraulic Drives | CS-150-HY

John Blue 4 GPM, 80 PSI CS Pump for Hydraulic Drives | CS-150-HY The John Blue CS-150-HY is a rugged hydraulic-driven centrifugal spray pump engineered for agricultural spraying, liquid fertilizer...

MSRP:

Now: $1,107.48
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John Blue
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sku: CS-150-HA12

John Blue 12 GPM, 115 PSI CS Pump for Hydraulic Drives | CS-150-HA12

John Blue 12 GPM, 115 PSI CS Pump for Hydraulic Drives | CS-150-HA12 The John Blue CS-150-HA12 is a high-performance hydraulic-driven centrifugal spray pump engineered for demanding agricultural...

MSRP:

Now: $1,425.43
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John Blue
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sku: 115521-01

John Blue O-ring for Top Cover | 115521-01

John Blue O-ring for Top Cover | 115521-01 Keep your John Blue Impellicone® NH₃ Flow Divider operating leak-free with the John Blue 115521-01 O-Ring for Top Cover. This genuine OEM replacement...

MSRP:

Now: $1.82
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John Blue
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sku: 115520-01

John Blue Needle | 115520-01

John Blue Needle | 115520-01 The John Blue 115520-01 Impellicone Needle is a genuine OEM replacement component designed for John Blue IP-0600 and IP-1300 Impellicone NH₃ Flow Dividers. The needle is...

MSRP:

Now: $60.86
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John Blue
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sku: 113717

John Blue Seal Repair Kit for LM-2450 Series Metering Pumps | 113717

John Blue Seal Repair Kit for LM-2450 Series Metering Pumps | 113717 The John Blue 113717 Seal Repair Kit provides the replacement seals, gaskets, O-rings, packing, and related components...

MSRP:

Now: $86.87
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John Blue
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sku: NGP-7055

John Blue 34.2 Single PST Pump | NGP-7055

John Blue 34.2 Single PST Pump | NGP-7055 The John Blue NGP-7055 is a heavy-duty 34.2 GPM single piston, double-acting metering pump engineered for accurate liquid fertilizer application in...

MSRP:

Now: $2,359.99
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John Blue
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sku: SP-3240-G6B

John Blue Cast Iron-2" SP Centrifugal with Briggs Pro Engine | SP-3240-G6B

John Blue Cast Iron-2" SP Centrifugal with Briggs Pro Engine | SP-3240-G6B The John Blue SP-3240-G6B is a rugged 2-inch cast iron self-priming centrifugal pump powered by a dependable 6 HP Briggs...

MSRP:

Now: $940.67
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John Blue
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sku: NGP-7055-HY

John Blue Cast Iron Piston Pump - 2" NPT Inlet x 2" NPT Outlet | NGP-7055-HY

John Blue Cast Iron Piston Pump - 2" NPT Inlet x 2" NPT Outlet | NGP-7055-HY The John Blue NGP-7055-HY is a heavy-duty single piston, double-acting hydraulic drive piston pump designed for...

MSRP:

Now: $1,262.59
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John Blue
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sku: SMFD4-NH3

John Blue VisaGage II NH3 Flow Four (4) Monitor Assembly | SMFD4-NH3

John Blue VisaGage II NH3 4-Row Flow Monitor Assembly | SMFD4-NH3 The John Blue SMFD4-NH3 VisaGage II is a four-row visual flow monitor assembly designed specifically for anhydrous ammonia (NH3) and...

MSRP:

Now: $161.88
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John Blue
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sku: SMFD2-NH3

John Blue VisaGage II NH3 Flow Monitor | SMFD2-NH3

John Blue VisaGage II NH3 2-Row Flow Monitor | SMFD2-NH3 The John Blue SMFD2-NH3 VisaGage II is a two-row flow monitor designed specifically for monitoring anhydrous ammonia (NH3) and...

MSRP:

Now: $109.47
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John Blue
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sku: SMPT-0061

John Blue VisaGage II 1/2" End Cap Adapter | SMPT-0061

John Blue VisaGage II 1/2" End Cap Adapter | SMPT-0061 Complete or repair your John Blue VisaGage® II Flow Monitor System with the John Blue SMPT-0061 1/2" NPT End Cap Adapter. This genuine OEM...

MSRP:

Now: $1.55
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John Blue
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sku: SMSS1

John Blue VisaGage II Single Flow Monitor Assembly | SMSS1

John Blue VisaGage II Single Flow Monitor Assembly | SMSS1 The John Blue SMSS1 VisaGage® II Single Flow Monitor Assembly provides an easy and dependable way to visually monitor liquid flow on a...

MSRP:

Now: $27.16
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John Blue
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sku: SMFD1

John Blue VisaGage II Single Row Flow Monitor Assembly | SMFD1

John Blue VisaGage II Single Row Flow Monitor Assembly | SMFD1 Upgrade your liquid application system with the John Blue SMPT-OSA4 VisaGage® II Four (4) Orifice Selector Kit. This patented...

MSRP:

Now: $22.53
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John Blue
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sku: SMPT-OSA4

John Blue VisaGage II Four (4) Orifice Selector Kit | SMPT-OSA4

John Blue VisaGage II Four (4) Orifice Selector Kit | SMPT-OSA4 Upgrade your liquid application system with the John Blue SMPT-OSA4 VisaGage® II Four (4) Orifice Selector Kit. This patented...

MSRP:

Now: $88.79
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John Blue
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sku: SMPT-0009

John Blue VisaGage II Ball Storage Unit | SMPT-0009

John Blue VisaGage II Ball Storage Unit | SMPT-0009 Keep your VisaGage® II flow monitor balls clean, organized, and ready for service with the John Blue SMPT-0009 VisaGage® II Ball Storage...

MSRP:

Now: $8.27
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John Blue
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sku: SMPT-0014

John Blue VisaGage II Flow Monitor Tee | SMPT-0014

John Blue VisaGage II Flow Monitor Tee | SMPT-0014 The John Blue SMPT-0014 VisaGage® II Flow Monitor Tee is an optional manifold accessory designed to expand and simplify your VisaGage II...

MSRP:

Now: $8.45
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