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Boosters - Blowers

IVS has a varied selection of completely overhauled vacuum pump boosters and blowers currently in stock and ready to be shipped.

Leybold WS/WSU501 Booster Blower Vacuum Pump Rebuilt Refurbished

Leybold WS/WSU501 Booster Blower Vacuum Pump Rebuilt Refurbished
    Item Number: LEYBOLD-WS-WSU-501

    $5,795.00

    Warranty: 1 year past the documented date of installation.

    *Product images are for reference purposes only and do not necessarily correspond to the actual product.  


    IN STOCK

    Leybold WS/WSU501 Booster Blower Vacuum Pump Rebuilt Refurbished

    RUVAC WA/WAU, WS/WSU

    The series WA/WAU Roots vacuum pumps are provided with directly flange-mounted air-cooled standard three-phase motors. The oiled radial sealing rings of the RUVAC WA/WAU for sealing the shaft against the atmosphere are made of FPM (fluor caoutchouc).

    The WS/WSU series pumps are driven by air or water-cooled canned motors.

    Roots vacuum pumps of the series WAU/WSU are provided with an additional integrated pressure equalization line and a differential pressure valve.

    Pumps from these series are supplied with a vertical pumping action as standard.

    Advantages to the User

    • Two air-cooled series, each with four models
    • Reliable and trouble-freeSealing rings with their housing Shaft seals and elastomer seals  Air-cooled standard motors in accordance with IEC dimensions eg. NEMA dimensionsmade of FPM/Vitoncan be readily replaced
    • Easy to exchange with custom motors
    • Integrated pressure equalization line for protection against overloading at high pressures on WAU models
    • Pumping direction may be changed as required
    • ATEX versions compliant to 94/9/EC possible

    Typical Applications

    • For oil-free compression of gases and vapors in combination with a backing pump
    • Short cycle pumping processes also in the presence of large quantities of gas and vapor

    Advantages to the User

    • Two series, each with four models
    • Highly leak-tight air-cooled pumps driven by a air-cooled canned motor
    • Lubricated with mineral oil. RUVAC WS/WSU PFPE with perfluoropolyether (PFPE)
    • WS and WS PFPE pumps are identical except for the lubricant and the shipping package
    • No thermal problems due to the speed independent cooling arrangement using a separately connected fan, thus no thermal problems at low speeds
    • Over-temperature switch in the stator coil of the motor
    • All elastomer seals made of FPM/Viton
    • Integrated pressure equalization line with differential pressure valve prevents overloading on WSU model
    • RUVAC WS 251 to 2001 for use with a frequency inverter for a wide frequency range
    • No shaft feedthrough to the atmosphere, thus particularly leaktight
    • Pumping direction may be changed as required

    Typical Applications

    • For applications which require a high pumping speed at pressures between 10-2 and 10-4 mbar (0.75 x 10-2 and 0.75 x 10-4 Torr)
    • Used where the possibility of contamination due air ingress or pumped media leakage must be avoided
    • Suction or pumping of high-purity or radioactive gases
    • Is used in clean rooms were the air must not be recirculated by the motor‘s fan
    Technical Data 50 Hz 60 Hz
    Nominal Pumping Speed 1) m3x h-1(cfm) 505 (297.4) 606 (357)
    Max Pumping Speed
    with Backing Pump
    m3x h-1(cfm)
    TRIVAC
    SOGEVAC
    410 (241)
    -
    SV200
    530 (312)
    -
    SV200
    Ultimate Partial Pressure 2) mbar (Torr)
    < 8 x 10-3 (< 6 x 10-3) < 8 x 10-3 (< 6 x 10-3)
    Ultimate Total Pressure2) mbar (Torr)
    < 4 x 10-2 (< 3 x 10-2) < 4 x 10-2 (< 3 x 10-2)
    Permissable Cut-In Pressure2) RUVAC WS mbar (Torr)
    100 (75.0) 80 (60.0)
    Max. Permissible Pressure Difference During Continuous Operation 3) mbar (Torr)
    80 (60.0) 80 (60.0)
    Main Supply



    Δ/Y V
    Δ/Y V

    200 / -
    208-265/ 460

    200 -208 / -
    265 / 460
    Thermal Class   F F
    Motor Power kW (hp) 2.2 (3.0) / 2.4 (3.3) 2.2 (3.0) / 2.4 (3.3)
    Nominal Speed, approx. rpm 3000/3600 3000/3600
    Max Permissable Speed rpm 6000 6000
    Type of Protection IP 20 20
    Oil filling for the bearing chamber 4)
    PFPE
    vertical pumping action, approx.
    horizontal pumping action, approx.
    OTHER OILS
    vertical pumping action, approx.
    horizontal pumping action, approx.


    l (qt)
    l (qt)

    l (qt)
    l (qt)
    1. Filling 5) / 2. Filling

    0.85 (0.9) / 0.75 (0.79)
    0.75 (0.79) / 0.7 (0.74)

    0.9 (0.95) / 0.8 (0.85)
    0.75 (0.79) / 0.7 (0.74)
    1. Filling 5) / 2. Filling

    0.85 (0.9) / 0.75 (0.79)
    0.75 (0.79) / 0.7 (0.74)

    0.9 (0.95) / 0.8 (0.85)
    0.75 (0.79) / 0.7 (0.74)
    Connection Flanges 6)
    DN
    DN
    63 ISO-K
    63 ISO-K
    Weight WS/WSU kg (lbs) 130/135 (286.7/297.7) 130/135 (286.7/297.7)
    Noise Level 7) dB(A) < 63 < 63
    • 1) To DIN 28 400 and subsequent numbers
    • 2) With double-stage rotary vane vacuum pump TRIVAC, resp. single-stage rotary vane vacuum pump SOGEVAC or dry compressing vacum pump ScrewLine (Type of backing pump look at max. pumping speed). Whe using 2-stage backing pumps the ultimate pressure will be correspondingly lower
    • 3) Applicable for ratio up to 1 : 10 between backing pump and Roots vacuum pump at 3000 rpm
    • 4) Authoriative, however, is the oil level at the oil-level glass
    • 5) After a complete disassembly
    • 6) At an operating pressure below < 10-1 mbar (< 0.75 x 10-1 Torr)

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