Asphalt Gear Pump

Winny: Email: sales01@cxflowmeter.com,

WhatsApp: +86 180 4984 1995

Asphalt Gear Pump

I. Core Parameter Matching Analysis

Flow and Pressure Requirements

Required parameters: Flow rate 208 m³/h, pressure 0.81 MPa.

KCB3800 parameters: Flow rate 228 m³/h (meets requirements with a margin), exhaust pressure 0.6 MPa.

Conclusion: The flow rate is fully matched, but the pressure is lower than the required value (0.6 MPa < 0.81 MPa). Compensation is required

 through the following methods:

Adjust system design: Reduce pipeline resistance (e.g., shorten pipe length, increase pipe diameter, reduce elbows).

Selection Correction: If the pressure cannot be met through system optimization, select a higher pressure model (e.g., KCB6300, pressure 

1.45 MPa).

Media Temperature and Viscosity

Required parameters: Media temperature 140–160°C, viscosity 76 cSt.

KCB3800 parameters: The media temperature range meets the requirements and has wide viscosity adaptability (the gear pump can handle 

5–1500 cSt). Conclusion: Fully compatible, no additional adjustments required.

Motor and Power Supply

Required Parameters: Three-phase AC 380V 50Hz, IP55 protection rating.

KCB3800 Parameters: Explosion-proof motor BT4, 160kW-6P, AC 380V 50Hz 3PH, packing seal.

Conclusion: The motor power, voltage, and frequency are all compatible, and the explosion-proof rating meets industrial safety requirements.

II. Structural and Functional Compatibility

Insulation Design

KCB3800 Configuration: Pump head with an insulation jacket, which allows for the use of thermal oil or steam to maintain fluidity.

Requirement Compatibility: Suitable for media temperatures between 140–160°C to prevent asphalt solidification.

Material and Corrosion Resistance

Wetted Parts Material: HT200 (gray cast iron), suitable for non-corrosive asphalt media.

Requirement Compatibility: If the media contains trace amounts of corrosive components, upgrade to stainless steel (such as 304/316L) is 

required. Sealing Type

KCB3800 Seal: Packing seal, suitable for high-temperature conditions but requiring regular maintenance.

Alternative: For lower leakage rates, mechanical seals are available (please confirm whether the supplier offers this option).

III. Model Selection Optimization Recommendations

Pressure Compensation Solution

System Optimization Priority: Reduce system pressure drop by reducing pipe resistance (e.g., using DN250 pipe diameter and eliminating 

90° elbows) so that the KCB3800's 0.6 MPa outlet pressure meets the required requirements.

Model Upgrade Alternative: If pressure is still insufficient after system optimization, consider the KCB6300 (flow rate 380 m³/h, pressure

 1.45 MPa), but consider the cost of excess flow.

Recommended Alternative Models

RCB Series Insulated Pumps: Suitable for high-viscosity media, with a pressure range of 0.8–1.6 MPa and customizable insulation jackets.

3QGB Three-Screw Pumps: High-pressure models (pressures up to 6.3 MPa), suitable for long-distance transportation or high-lift applications.

IV. Final Selection Conclusion

Recommended Model: KCB3800 Gear Pump (Requires System Pressure Optimization).

Advantages: Flow matching, strong temperature adaptability, comprehensive insulation design, and low cost.

Risks: Outlet pressure must be compensated through system design, and the supplier must confirm the life of the packing seal at high 

temperatures.

Alternative: KCB6300 Gear Pump (Pressure 1.45 MPa).

Suitable Scenario: When system pressure drop cannot be optimized, or when a higher pressure margin is required.

Winny: Email: sales01@cxflowmeter.com,

WhatsApp: +86 180 4984 1995