My Cart: 0 item(s)

Driving Research since '77
Product Search

Secure Checkout

Direct Drive Pump 8905

Direct Drive Pump 8905
    Direct Drive Pump 8905


    PART NUMBER: 8905

    Vendor: Welch

    Product Documents

  • MSRP: $2,265.00   
    Price: $1,925.25

    Shipping Weight: 33.00 pounds

    Quantity in Basket:  None

  • Product Details

    • Deep Vacuum
    • Portable with small footprint
    • Vacuum to 1 X 10-4 torr

    Suggested Applications

    Welch Direct-Drive Rotary Vane Vacuum Pumps achieve vacuum levels down to 1x10-4 torr (0.1 micron) with flows up to 11.3 CFM. These compact, portable oil-seal pumps are recommended for a variety of laboratory applications. Vacuum system configuration with a cold trap is recommended for use with harsh chemicals. Direct drive pumps are not recommended for filtration, aspiration, drying elect

     

    Product Family Specifications

    Model Number 8905 8907 8912 8917 8920 8925 CRVpro4 CRVpro6 CRVpro8
    Model Number 8905 8907 8912 8917 8920 8925 CRVpro4 CRVpro6 CRVpro8
    Applications Centrifugal Concentrators, Vacuum Ovens, Freeze Dryers, SEM's, Annular Spaces / Transfer Lines Centrifugal Concentrators, Vacuum Ovens, Freeze Dryers, SEM's, Annular Spaces / Transfer Lines Centrifugal Concentrators, Vacuum Ovens, Freeze Dryers, SEM's, Annular Spaces / Transfer Lines Centrifugal Concentrators, Vacuum Ovens, Freeze Dryers, SEM's, Annular Spaces / Transfer Lines Centrifugal Concentrators, Vacuum Ovens, Freeze Dryers, SEM's, Annular Spaces / Transfer Lines Centrifugal Concentrators, Vacuum Ovens, Freeze Dryers, SEM's, Annular Spaces / Transfer Lines Centrifugal Concentrators, Vacuum Ovens, Freeze Dryers, SEM's, Annular Spaces / Transfer Lines Centrifugal Concentrators, Vacuum Ovens, Freeze Dryers, SEM's, Annular Spaces / Transfer Lines Centrifugal Concentrators, Vacuum Ovens, Freeze Dryers, SEM's, Annular Spaces / Transfer Lines
    Type Laboratory Vacuum Pump Laboratory Vacuum Pump Laboratory Vacuum Pump Laboratory Vacuum Pump Laboratory Vacuum Pump Laboratory Vacuum Pump Laboratory Vacuum Pump Laboratory Vacuum Pump Laboratory Vacuum Pump
    Free Air Displacement cfm (l/min.) @60Hz 1.8(51) 2.6(73) 3.8(108) 6.1(173) 7.7(218) 11.3(320) 2.8 (78) 4.2 (118) 5.6 (158)
    Free Air Displacement m3/hr (l/min.) @50Hz 2.6(43) 3.7(61) 5.4(90) 8.6(144) 10.9(182) 16(267) 4 (67) 6 (100) 8 (133)
    Ultimate Pressure 2 x 10-3(0.0027) 1x10-4(0.00013) 1x10-4(0.00013) 1x10-4(0.00013) 3 x 10-4(0.0004) 4 x 10-4(0.00053) 4 x 10ญญ⁻⁴ torr (5 x 10ญญ⁻⁴ mbar) 4 x 10ญญ⁻⁴ torr (5 x 10ญญ⁻⁴ mbar) 4 x 10ญญ⁻⁴ torr (5 x 10ญญ⁻⁴ mbar)
    Sound Level 52 50 50 50 54 55 50 DbA 50 DbA 50 DbA
    Pump RPM 3450 1725 1725 1725 1725 1725 1740 1740 1740
    Oil Capacity 0.42(0.4) 1.0(0.95) 0.9(0.86) 0.9(0.86) 1.3(1.2) 1.2(1.1) 1.2 Qt (1150 ml) 1.2 Qt (1150 ml) 1.1 Qt (1000 ml)
    Motor Horsepower (watts) 1/4(190) 1/2(370) 1/2(370) 1/2(370) 3/4(560) 3/4(560) 0.4 HP (0.3 kW) 0.4 HP (0.3 kW) 0.4 HP (0.3 kW)
    Tubing Needed 3/16, 7/16 (5, 11) 7/16, 13/16 (11, 20) 7/16, 13/16 (11, 20) 7/16, 13/16 (11, 20) 9/16, 13/16 (14, 20) 9/16, 13/16 (14, 20) 5/8" to 3/4" ID Vacuum Hose 5/8" to 3/4" ID Vacuum Hose 5/8" to 3/4" ID Vacuum Hose
    Intake Thread NPT UNIBARB (3/4-20) UNIBARB (1 1/8-20) UNIBARB (1 1/8-20) UNIBARB (1 1/8-20) UNIBARB (1 1/8-20) UNIBARB (1 1/8-20) NW16; Hose Barb on -01 Models NW16; Hose Barb on -01 Models NW16; Hose Barb on -01 Models
    Exhaust Thread NPT 3/4/20 1-20 1-20 1-20 1-20 1-20 NW16 NW16 NW16
    Overall Dimensions LxWxH in. (cm) 14.5x5.1x8.4 (36.8x13x21.3) 18.5x6.5x9.6 (47.1x16.5x24.3) 18.5x6.5x9.6 (47.1x16.5x24.3) 18.5x6.5x9.6 (47.1x16.5x24.3) 20.5x7.1x10.7 (52.1x17.9x27.2) 21.2x7.1x10.7 (53.817.9x27.2) 18.2 x 6.1 x 9.1 (46.3 x 15.7 x 23.0) 18.2 x 6.1 x 9.1 (46.3 x 15.7 x 23.0) 18.2 x 6.1 x 9.1 (46.3 x 15.7 x 23.0)
    Ship Weight 33(15) 55(25) 55(25) 60(27.3) 71(32.3) 74(33.6) 61.8 lbs (28 kg) 49 lbs (22 kg) 63.9 lbs (29 kg)
    Shipping Carton Dimensions LxWxH in. (cm) 21.5x12.5x16 (54.6x31.8x40.6) 24x15.8x14 (61x40.1x35.6) 24x15.8x14 (61x40.1x35.6) 24x15.8x14 (61x40.1x35.6) 24x15.8x14 (61x40.1x35.6) 24x15.8x14 (61x40.1x35.6) 22.3 x 13 x 13 (57 x 33 x 33) 22.3 x 13 x 13 (57 x 33 x 33) 22.3 x 13 x 13 (57 x 33 x 33)

     



    Soon!

    All returns must be authorized by Spectra Services in order to insure proper credit and must be requested within 30 days of purchase. All returns are subject to a minimum 15% restocking charge. For returns not due to error on behalf of Spectra Services, the customer is responsible for all transportation fees related to the returned product. To ensure proper credit, each product return must include the following information:

    • Customer name and address
    • Purchase order number
    • Spectra Services shipping order number
    • Date of invoice
    • Item number of returned item(s)
    • Spectra Services return authorization number (RMA)
    • Reason for return

    Non-Returnable Goods
    Unfortunately, Spectra Services is unable to accept the following returns at this time:

    • Products not in completely resalable condition (including products with damaged, missing, or defaced labeling or packaging
    • Chemicals, reagents, diagnostics, sterile, or any controlled products (unless products do not meet specification
    • Labroatory apparatus or instruments that have been used or are without the original packaging, labeling and operating manuals
    • Refrigerated products or other perishables
    • Products which are not inventoried by Spectra Services and are not able to be returned to the manufacturer
    • Products purchased on a special order
    • Products not purchased from Spectra Services
    • Products with an expired shelf life or an expiration date too short for resale
    • Discontinued products

    Spectra Services reserves the right to review this policy on a case-by-case basis.

    Pre-Owned Products

    Upon receipt of the pre-owned product(s), the customer has one week to evaluate the product to ensure it meets their expectations. If for some reason the customer decides to return the product, they may do so at any point during those seven (7) days for a full refund. No restocking fee will be assessed, however, the customer is responsible for the return shipping costs. Full credit will be issued upon receipt and inspection of the item(s) to ensure equipment was returned in the same condition it was initially shipped out in.

    Important Information

    All exchanges and returns require the completion of a Return Merchandise Authorization (RMA) form. Once completed, please return the merchandise immediately as the RMA number is only active for ten (10) days from the date of issuance.

    Charges associated with returning items are the responsibility of the customer unless the item(s) arrived defective, damaged, or incorrect.

    Spectra Services highly recommends that return packages be insured for full value and packaged securely to prevent shipping damage.

    We're Here To Help
    Your satisfaction is important to us! Use the form below to email us your questions about products, online orders, store experiences and more.

    Order Questions:
    If you need help or have any other questions concerning your orders, please fill out the form or call: 800-955-7732.

    Our Address:
    Spectra Services, INc.
    6359 Dean Parkway
    Ontario, NY 14519 US
    Phone: 800-955-7732