Positive Displacement Pump for Liquid Fertilizer Injection

Product Specifications

Technical details and manufacturing context for Positive Displacement Pump

Definition

The Positive Displacement Pump is a mechanical component used within the Precision Liquid Fertilizer Injection System. It delivers a consistent, metered volume of liquid fertilizer per revolution or stroke, ensuring accurate dosing and preventing backflow. The pump operates by trapping a fixed amount of fluid and forcing it into the discharge pipe, making it suitable for high-viscosity fluids and precise agricultural applications. Common types include gear, piston, diaphragm, or lobe pumps, all of which provide positive displacement regardless of system pressure. The pump is available in materials such as stainless steel, cast iron, and engineering plastics, with material selection depending on the fluid's corrosiveness and the application requirements. Key parameters include a flow rate of 0.5–50 m³/h (ISO 9906), an operating pressure of 1.0–1.6 MPa, and a maximum discharge pressure of 2.5 MPa. The viscosity range is 1–1000 cP, and the temperature range is -20 to 80 °C. Motor power ranges from 0.75 to 7.5 kW (IEC 60034), with a standard voltage of 380 V and frequency of 50 Hz (IEC 60038). Ingress protection is IP54–IP65 (IEC 60529), and pump material grades are 304 or 316 stainless steel (ASTM A240). Weight ranges from 50 to 200 kg, and dimensions vary from 500×300×400 mm to 800×500×600 mm. These values are reference ranges and must be verified with the manufacturer for the specific model and application. The pump is designed for integration into systems requiring precise dosing, and its positive displacement principle ensures consistent flow even under varying pressure conditions. For proper selection, consider the required injection volume, system pressure, fluid viscosity, and temperature. Always confirm model-specific values and standards with the legal manufacturer or supplier before procurement.

Working Principle

The pump operates by mechanically expanding a cavity to draw in fluid, then reducing the cavity to discharge the fluid. This positive displacement action ensures a fixed volume of fluid is moved per cycle, regardless of the discharge pressure. Common types include gear, piston, diaphragm, or lobe pumps, each providing a consistent flow rate. The pump's design prevents backflow and allows precise metering, making it ideal for applications requiring accurate dosing of liquid fertilizer.

Common Materials

Stainless Steel, Cast Iron, Engineering Plastics

Technical Parameters

Parameter	Typical range	Notes & selection driver
Flow Rate	0.5–50 m³/h	Select based on required injection volumeISO 9906
Max Discharge Pressure	2.5 MPa	Do not exceed to avoid damage
Viscosity Range	1–1000 cP	Higher viscosity may require derating
Temperature Range	-20–80 °C	For higher temperatures, use special seals
Motor Power	0.75–7.5 kW	Match to required flow and pressureIEC 60034
Voltage	380 V	Three-phase, 50 HzIEC 60038
Frequency	50 Hz	Other frequencies available on requestIEC 60038
Ingress Protection	IP54–IP65	IP65 for outdoor or dusty environmentsIEC 60529
Pump Material	304/316 SS	316 for corrosive fluidsASTM A240
Weight	50–200 kg	Depends on configuration
Dimensions (L×W×H)	500×300×400–800×500×600 mm	Varies with pump size

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Housing/Casing Part
Encloses and supports internal components, provides fluid containment

Material: Stainless Steel
Rotors/Gears/Pistons Part
Creates displacement cavities to trap and move fluid

Material: Stainless Steel
Seals/Gaskets Part
Prevents leakage between moving parts and housing

Material: Viton/EPDM Rubber
Inlet/Outlet Ports Part
Connects to fertilizer supply and discharge lines

Material: Stainless Steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Mud Mixing and Pumping System

View system integration details

Manufacturers of Positive Displacement Pump

Manufacturer profiles associated with Positive Displacement Pump.

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Frequently Asked Questions

What is the typical flow rate range for this pump?

The reference flow rate range is 0.5–50 m³/h, as per ISO 9906. The actual flow rate depends on the specific model and application, so it must be verified with the manufacturer.

Can this pump handle high-viscosity fluids?

Yes, the pump is suitable for fluids with viscosity up to 1000 cP. However, higher viscosity may require derating, so consult the manufacturer for specific performance data.

What materials are available for the pump?

The pump can be made of stainless steel (304 or 316), cast iron, or engineering plastics. The choice depends on the fluid's corrosiveness and the application requirements.

What standards apply to this pump?

Relevant standards include ISO 9906 for flow rate, IEC 60034 for motor power, IEC 60038 for voltage/frequency, and IEC 60529 for ingress protection. These are reference standards; compliance must be confirmed with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 15 bar (217 psi)
flow rate:	0.1 to 100 L/min
temperature:	-20°C to 120°C
slurry concentration:	Up to 40% solids by weight

Positive Displacement Pump

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards