Welch Rugged Industrial Vacuum Pumps and Systems - Specifications

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Dry Low Vacuum Oil-Less Vane Pump

Welch Model

8148140
8170
Free Air Displacement, CFM (L/min)
4.6
10.0 (283)
Ultimate Pressure, Torr
100
100
Maximum Vacuum, in. Hg
26
26
Motor HP
1/3
3/4
Tubing, I.D. inch
1/4
7/16
Inlet Connection, in. FNPT
1/4
3/8
Outlet Connection, in FNPT
1/4
3/8
Tank on Simplex, gal.
10
10
Weight of pump, lbs.
34
34
Dimensions, L x W x H in.
21.5 x 6.5 x 7
19.3 x 6.75 x 8.5














Dry Low Vacuum Oil-Less Piston & Diaphragm Pumps

Welch Model

2565
2585
2560
2580
2581
Free Air Displacement, CFM (L/min) @60 Hz m'/hr (L/Min) @ 50 Hz
3.1 (88)
4.4 (73)
7.1 (201)
10 (168)
1.6 (45)
2.3 (38)
3.5 (99)
4.9 (83)
3.5 (100)
5.0 (83)
Ultimate Pressure, Torr (mbar)
60 (80)
60 (80)
7.5 (10)
9 (12)
<4 (<5.3)
Maximum Vacuum, in. Hg
27.6
27.6
29.6
29.6
29.8
Motor HP
1/3
1/3
1/3
1/3
1/3
Tubing Needed, I.D. in. (mm)
3/8 (10)
3/8 (10)
3/8 (10)
3/8 (10)
NW 25 Flange
Weight, lbs. (kg)
16.5 (7.5)
22.5 (10.3)
16.5 (7.5)
22.5 (10.3)
22.5 (10.3)
Shipping Weight, lbs. (kg)
21.5 (9.7)
27.5 (12.5)
21.5 (9.7)
27.5 (12.5)
30 (13.6)
Dimensions (L x W x H) in (mm)
11.1 x 6.5 x 9.1
(282 x 165 x 231)
11.1 x 9.2 x 11
(282 x 234 x 279)
11.1 x 6.5 x 9.1
(282 x 165 x 231)
11.1 x 9.2 x 11
(282 x 234 x 279)
13.25 x 7.6 x 11.7
(336 x 193 x 297)
* Not recommended for pumping organic, acidic and basic vapors


Welch Model

2085
2090
Free Air Displacement, CFM (L/min) @60 Hz m'/hr (L/Min) @ 50 Hz
6.2 (176)
8.8 (147)
3.1 (88)
4.4 (73)
Ultimate Pressure, Torr (mbar)
100 (133)
25 (33)
Maximum Vacuum, in. Hg
26
29.0
Motor HP
1/2
1/2
Tubing Needed, I.D. in. (mm)
7/16 (11)
7/16 (11)
Weight, lbs. (kg)
32 (14.5)
32 (14.5)
Shipping Weight, lbs. (kg)
37 (16.8)
37 (16.8)
Dimensions (L x W x H) in (mm)
15.3 x 11.1 x 6.6
(389 x 282 x 168)
15.3 x 11.1 x 6.6
(389 x 282 x 168)
Model 2085 and 2090 employ a Teflon coated head, stainless steel valves and a Teflon liner over diaphragm. * 50 Hz not CE listed.




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