Industrial Roots Vacuum Pumps For Coating Systems
Discover Roots Vacuum Pump by Ever-Power. Featuring advanced magnetic drive technology for zero leakage and automatic overflow valves for overload protection. Ideal for semiconductor, coating, and chemical industries. Get a quote for your industrial vacuum system today.
The Next Generation of Industrial Roots Vacuum Pumps. Featuring Automatic Overload Protection (ZJP) and Zero-Leakage Magnetic Drive Technology (ZJPC).
Product Overview: Precision & Reliability
In the demanding world of industrial vacuum processing, stability and sealing integrity are paramount. Ever-Power introduces the ZJP and ZJPC Series, a premium line of Roots vacuum pumps designed to elevate your system's performance. Whether you require the robust overload protection of the ZJP series or the hermetic sealing of the ZJPC magnetic drive series, we provide the ultimate Roots pump vacuum system solution.
The ZJP/ZJPC series operates on the proven Roots principle: a pair of figure-8 shaped rotors rotate synchronously in opposite directions within the pump casing. This action creates suction and exhaust without any physical contact between the rotors or the casing. Consequently, the working chamber is frictionless and oil-free, ensuring no contamination of the pumped medium.
What sets this series apart is its advanced engineering. The rotors are supported by high-load bearings and synchronized by precision gears. The ZJP models feature a built-in overflow valve that automatically opens when the pressure difference exceeds a set limit, effectively preventing motor overload. Meanwhile, the ZJPC models utilize magnetic coupling to eliminate dynamic shaft seals entirely, solving the age-old problem of shaft seal leakage in hazardous applications.
Roots Vacuum Pump Working Principle & Innovation
The Core Mechanism
The Roots vacuum pump working principle relies on two non-contacting rotors spinning at high speeds. This generates a high pumping speed at low pressures. However, standard Roots pumps can overheat if the pressure differential becomes too high. Our ZJP series addresses this with a proprietary "Self-Weight Valve" (Overflow Valve). When the pressure difference between the exhaust and inlet exceeds the valve's weight, it opens automatically, recirculating gas and reducing the load. This ensures the pump can operate reliably even under high-pressure differentials.
Magnetic Drive Technology (ZJPC Series)
For applications where leakage is unacceptable—such as semiconductor manufacturing or toxic gas handling—the ZJPC series is the superior choice. Unlike traditional pumps that use mechanical seals or oil seals (dynamic seals), the ZJPC uses a magnetic coupling to transmit torque.
- Zero Leakage: The casing is hermetically sealed (static seal), eliminating the need for shaft seals.
- Vibration Free: Non-contact torque transmission reduces noise and vibration significantly compared to mechanical couplings.
- Maintenance Free: No seals to wear out means no seals to replace, reducing long-term operating costs.
ZJP/ZJPC Series Performance Specifications
Review the technical data below to select the appropriate model. Note the high pumping speeds and optimized overflow valve pressure differentials.
| Model | Ultimate Pressure (Pa) | Pumping Speed (L/s) | Overflow Valve Diff (hPa) | Inlet Diam (mm) | Outlet Diam (mm) | Motor Power (kW) | Recommended Backing Pump | Cooling Water (L/min) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| ZJP-30 / ZJPC-30 | 3×10⁻² | 30 | 40 | 50 | 40 | 0.75 | 2XZ-8 | 4 | 80 |
| ZJP-70 / ZJPC-70 | 3×10⁻² | 70 | 40 | 80 | 50 | 1.1 | 2XZ-12 | 4 | 98 |
| ZJP-70D / ZJPC-70D | 3×10⁻² | 70 | 48 | 100 | 100 | 1.5 | 2H-15 | 5 | 220 |
| ZJP-150 / ZJPC-150 | 3×10⁻² | 150 | 48 | 100 | 100 | 2.2 | 2H-30B | 5 | 220 |
| ZJP-150T / ZJPC-150T | 3×10⁻² | 150 | 48 | 100 | 100 | 2.2 | 2H-30B | 5 | 220 |
| ZJP-300 / ZJPC-300 | 3×10⁻² | 300 | 58 | 150 | 150 | 4 | HGL70 | 6 | 310 |
| ZJP-600 / ZJPC-600 | 3×10⁻² | 600 | 32 | 200 | 200 | 7.5 | HG150 / HGL150 | 8 | 630 |
| ZJP-1200 / ZJPC-1200 | 3×10⁻² | 1200 | 44 | 250 | 200 | 11 | HG150 / HGL150 | 10 | 815 |
| ZJP-1800 / ZJPC-1800 | 3×10⁻² | 1800 | 32 | 250 | 250 | 15 | ZJP600 / HGL150 | 12 | 1200 |
| ZJP-2500 / ZJPC-2500 | 3×10⁻² | 2500 | 44 | 320 | 320 | 18.5 | ZJP600 / HGL150 | 12 | 1500 |
Key Features & Advantages
CNC Precision Machining
All pump bodies, side covers, and end covers are processed by CNC machining centers. This guarantees high precision, "O" ring sealing, and excellent interchangeability of parts, making Roots vacuum pump maintenance tips simple to follow for service teams.
Low Noise & Vibration
The high-precision helical gears and dynamically balanced rotors ensure smooth, quiet operation. This makes the ZJ series one of the Best Roots vacuum pumps for coating systems where vibration can affect product quality.
System Flexibility
Our Roots pumps act as excellent Roots booster vacuum pump units. They can be paired with screw pumps, rotary vane pumps, or liquid ring pumps to create custom energy efficient Roots vacuum pump solutions tailored to your specific gas load.
Installation Dimensions
1. Dimensions: ZJP-30 to ZJP-1200 (mm)
| Model | L0 | L1 | L2 | L3 | L4 | H1 | H2 | H3 | W1 | W2 | W3 | Mounting (4-φC) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ZJP-30 | 710 | 186 | 120 | 360 | 15 | 270 | 40 | 100 | 220 | 270 | 145 | 4-φ14 |
| ZJP-70 | 773 | 221 | 155 | 450 | 15 | 300 | 50 | 130 | 220 | 265 | 168 | 4-φ14 |
| ZJP-70D | 932 | 267 | 195 | 580 | 20 | 475 | 90 | 195 | 320 | 408 | 245 | 4-φ18 |
| ZJP-150 | 932 | 267 | 195 | 580 | 20 | 475 | 90 | 195 | 320 | 408 | 245 | 4-φ18 |
| ZJP-150T | 922 | 267 | 170 | 500 | 20 | 415 | 30 | 135 | 297 | 362 | 245 | 4-φ18 |
| ZJP-300 | 1100 | 327 | 275 | 740 | 20 | 525 | 90 | 215 | 320 | 408 | 285 | 4-φ18 |
| ZJP-600 | 1370 | 399 | 277.5 | 760 | 27.5 | 673 | 70 | 235 | 480 | 590 | 375 | 4-φ24 |
| ZJP-1200 | 1730 | 509 | 316 | 948 | 26 | 675 | 65 | 250 | 520 | 650 | 425 | 4-φ24 |
2. Connection & Flange Dimensions (mm)
| Model | D1 | D2 | D3 | D4 | D5 | D6 | n1-MA | n2-MB | Cooling Inlet | Cooling Outlet |
|---|---|---|---|---|---|---|---|---|---|---|
| ZJP-30 | 110 | 90 | 50 | 100 | 80 | 40 | 4-M8 | 4-M8 | φ12 | φ12 |
| ZJP-70 | 145 | 125 | 80 | 110 | 90 | 50 | 4-M8 | 4-M8 | φ12 | φ12 |
| ZJP-70D | 170 | 145 | 100 | 170 | 145 | 100 | 4-M10 | 4-M10 | φ12 | φ12 |
| ZJP-150 | 170 | 145 | 100 | 170 | 145 | 100 | 4-M10 | 4-M10 | φ12 | φ12 |
| ZJP-150T | 170 | 145 | 100 | 170 | 145 | 100 | 4-M10 | 4-M10 | φ12 | φ12 |
| ZJP-300 | 220 | 195 | 150 | 220 | 195 | 150 | 8-M10 | 8-M10 | φ12 | φ12 |
| ZJP-600 | 285 | 250 | 200 | 285 | 250 | 200 | 8-M10 | 8-M10 | G1/2" | G1/2" |
| ZJP-1200 | 335 | 310 | 250 | 285 | 260 | 200 | 12-M10 | 12-M10 | G1/2" | G1/2" |
3. Dimensions: ZJP-1800 to ZJP-2500 (mm)
| Model | L0 | L1 | L2 | L3 | L4 | H | W1 | D1 | D2 | D3 | n-MA | Water Connections |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ZJP-1800 | 1840 | 520 | 490 | 660 | 750 | 70 | 420 | 335 | 310 | 250 | 12-M10 | G1/2" |
| ZJP-2500 | 2000 | 605 | 660 | 830 | 920 | 40 | 460 | 425 | 395 | 320 | 12-M12 | G1/2" |
Applications & Selection Guide
Common Applications
Our Roots vacuum pump applications are diverse, serving industries that require clean, high-speed vacuum:
- Semiconductor Industry: Use ZJPC magnetic pumps for toxic or high-purity gas handling without leakage.
- Coating Systems: High-speed evacuation for PVD/CVD chambers.
- Chemical Processing: Solvent recovery and distillation (when paired with dry backing pumps).
- Metallurgy: Vacuum smelting and degassing.
How to Select Your Roots Pump
Roots vacuum pump backing pump selection is critical. A Roots pump cannot discharge to the atmosphere directly.
- Calculate Compression Ratio: Ensure the backing pump (screw, liquid ring, or oil-sealed) has sufficient capacity to handle the Roots pump's maximum discharge pressure.
- Gas Type: For condensable gases, use a Screw or Liquid Ring backing pump. For clean air, an oil-sealed pump is sufficient.
- Safety: For flammable or explosive gases, ZJPC series with explosion-proof motors is mandatory.
Frequently Asked Questions (FAQ)
1. What is the benefit of the overflow valve in the ZJP series?
The overflow valve acts as an automatic overload protection. If the pressure difference across the pump exceeds a safe limit, the valve opens to recirculate gas, preventing motor burnout and allowing the pump to start at higher pressures.
2. When should I choose the ZJPC magnetic drive pump?
Choose the ZJPC series when zero leakage is required. This is essential for pumping toxic, radioactive, or expensive gases, or when a strictly oil-free external environment is needed.
3. Can I run these pumps without a backing pump?
No. Roots pumps are booster pumps. They must be connected to a backing pump (fore-pump) that exhausts to the atmosphere. Running them alone will cause overheating and failure.
4. What is the maintenance interval?
We recommend checking oil levels weekly and changing gear oil every 2,000 operating hours. For ZJPC models, since there are no shaft seals, maintenance is significantly reduced.
5. Do you offer portable systems?
Yes, we can configure a portable Roots vacuum pump system mounted on a skid with a backing pump and control panel for mobile industrial use.
Upgrade Your Vacuum Efficiency
Contact Ever-Power today for technical consultation and pricing on ZJP/ZJPC pumps.
Additional information
| edited | by hyw |
|---|
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