VJP-500 Roots Booster Vacuum Pump
Provide the gas composition, gas load, target pressure, vessel volume, evacuation time and existing backing equipment. Confirm the allowable pressure difference, cooling, startup and shutdown sequence, bypass or other protective controls, and maintenance requirements for the exact configuration. Achievable pressure and evacuation time depend on the complete installation and test conditions; a booster rating alone does not establish system performance.
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VJP Series Roots Booster Pump Technical Parameters
Listed catalogue values must be checked against the proposed configuration and test conditions. Nominal displacement is not the pumping speed at every pressure. Ultimate-pressure figures require the backing equipment and pressure measurement basis to be specified. Backing-pump names below are references for review, not confirmed system pairings. Verify connection dimensions against the installation drawing.
| Model / Parameter | VJP-150 | VJP-250 | VJP-500 | VJP-1000 | VJP-2000 |
|---|---|---|---|---|---|
| Nominal Displacement (m³/h) | 153 | 253 | 505 | 1000 | 2050 |
| Partial Pressure (Pa) | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 |
| Total Pressure (Pa) | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Max Allowable ΔP (Pa) | 8000 | 8000 | 8000 | 8000 | 5000 |
| Inlet/Outlet Dia. d (mm) | 65 (70) | 65 (70) | 65 (70) | 100 | 150 |
| Max Compression Ratio (K0.max) | ≥ 35 | ≥ 35 | ≥ 40 | ≥ 40 | ≥ 50 |
| Noise Level Lw dB(A) | 63 | 63 | 63 | 68 | 75 |
| Oil Capacity (L) | 1.5 | 1.5 | 3.0 | 5.0 | 7.0 |
| Motor Power (kW) | 1.1 | 1.1 | 2.2 | 4.0 | 7.5 |
| Motor Speed (r/min) | 3000 | 3000 | 3000 | 3000 | 3000 |
| Cooling Method | Natural Air | Natural Air | Natural Air | Natural Air | Natural Air |
| Net Weight (kg) | 90 | 100 | 155 | 233 | 465 |
| Backing Pump References (Verify Pairing) | V-63 / 2X-8 | V-100 / 2X-15 | V-160 (VR160) / 2X-30 / 2BVA5111 | V-302 / 2X-70 | V-630 / 2x 2X-70 |
VJP-500 System Configuration Review
System Performance Curve
The VJP-500 catalogue lists 505 m³/h nominal displacement. Request the pumping-speed curve for the proposed booster and backing-pump arrangement at your operating pressure. Confirm evacuation time against vessel volume, gas load and pipework.
Pressure Limits and Protective Controls
Confirm the permitted inlet and outlet pressures, pressure difference and operating sequence for the exact configuration. Obtain documented bypass-valve settings where applicable, and define interlocks and monitoring with the system supplier.
Process Cleanliness and Maintenance
Specify acceptable process contamination and identify gas, vapours and particles. Confirm seals, inlet protection, exhaust treatment and backing-pump requirements. Review lubricant and service instructions for the complete assembly; dry compression alone does not establish system cleanliness.
Installation, Noise and Energy Review
The listed motor rating is 2.2 kW; actual energy use depends on the operating point and duty cycle. Request the installation drawing, permitted orientation, cooling and service clearances. Confirm noise data with its measurement conditions before planning the installation.
Application and System Requirements to Review
Define the Application
- Coating equipment: Provide chamber volume, gas composition, operating pressure and the required evacuation sequence.
- Drying and evaporation: State vapour load, inlet temperature and condensation conditions; request a complete protection and backing-pump review.
- Heat treatment and metallurgy: Define the pressure cycle, gas load and process gases, together with cooling and exhaust requirements.
- Degassing and impregnation: Identify liquids, carryover, cycle time and required separation equipment.
- Replacement installations: Supply the existing system curve, equipment nameplates, connection drawings and operating history.
Provide System Details
- Target pressure with units, absolute or gauge basis and measurement location.
- Normal and peak gas load, gas composition and inlet temperature.
- Vessel volume, starting pressure, evacuation time and duty cycle.
- Existing or proposed backing-pump curve, capacity and operating limits.
- Condensate, particles, gas compatibility, inlet protection and exhaust treatment.
- Electrical supply, controls, cooling, installation dimensions and service access.
Frequently Asked Questions (FAQ)
How should the VJP-500 be matched with a backing pump?
Provide the target pressure, gas load, gas composition, vessel volume, evacuation time and proposed backing-pump data. Request a performance curve for the complete arrangement and confirm the allowable operating range. A model name or nominal displacement alone does not establish a suitable pairing.
Does the catalogue ultimate pressure establish my process pressure?
No. Ask for the pressure reference, total or partial pressure basis, backing equipment, gas and test conditions behind the stated figure. The pressure maintained during your process depends on the complete installation, leakage and gas load; it cannot be inferred from an isolated catalogue value.
What should be confirmed about bypass protection and startup?
Confirm whether the quoted configuration includes a bypass valve and obtain its documented function, settings and limits. Request the permitted pressure difference, startup and shutdown sequence, interlocks and monitoring requirements. Do not infer unrestricted startup or complete overload protection from the presence of a valve.
What information is needed for an OEM or replacement inquiry?
Share the electrical supply, duty cycle, gas conditions, installation space, connection dimensions and existing equipment nameplate. Identify required motor, adapter, finish or branding changes. Ask which options are available for the proposed model and request drawings and supporting documentation before confirming a configuration.
Ready to Upgrade Your Industrial Vacuum System?
Use the vacuum pump inquiry checklist to share your operating requirements, backing equipment, quantity and destination. Request a proposed system configuration and project-specific quotation.