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Pricing is valid only for USA and Canada. All prices are in U.S. dollars.

8907A	$2,246.40
8912A	$2,458.56
8917A	$2,683.20
8907C-02	$2,246.40
8912C-02	$2,458.56
8917C-02	$2,683.20
8917W	$3,682.64

Additional Information

Some files may require the Adobe Acobat Plug-in:

8907A

• Dimensional Drawing (PDF)
• Exploded View & Parts List (PDF)
• Speed Curve (PDF)
• Picture

8912A

• Dimensional Drawing (PDF)
• Exploded View & Parts List (PDF)
• Speed Curve (PDF)
• Picture

8917A

• Dimensional Drawing (PDF)
• Exploded View & Parts List (PDF)
• Speed Curve (PDF)
• Picture

• General Vacuum Work
• Easy Oil Change Valve
• Cool Running
• Compact Footprint
• Laboratory Applications
• OEM Instrumentations
• Unibarb

ORDERING INFO & SPECIFICATIONS

Pricing is valid only for USA and Canada. All prices are in U.S. dollars.

Description	Catalog Number
Wired for 115V, 60 Hz, 1 PH with N. American 115V Plug	8907A $2,246.40	8912A $2,458.56	8917A $2,683.20
Wired for 230V, 60 Hz, 1 PH with N. American 230V Plug	SEE CHART BELOW
Wired for 220V, 50 Hz, 1 PH with Cont. Euro. (Schuko) Plug	8907C-02 $2,246.40	8912C-02 $2,458.56	8917C-02 $2,683.20
Exp. Proof Motor 115V, 60HZ	8917W $3,682.64

 

8907A, 8912A and 8917A pumps come with 115V n. Amer. Plug.
8907C-02, 8912C-02 and 8917C-02 pumps come with Cont. Euro. plug.
For other locations order pump and line cord combinations below.

N. American 230V	89_ _C-02 & 8906M
U.K. 230V	89_ _C-02 & 8906N

Welch Model4	8907	8912	8917
Free Air Displacement
CFM (L/min) @ 60Hz	2.6 (73)	3.8 (108)	6.1 (173)
(L/min) m3/hr @ 50Hz	(61) 3.7	(90) 5.4	(144) 8.61
Ultimate Pressure (Torr)4	1 x 10 -4	1 x 10 -4	1 x 10 -4
Sound Level,dBA	50	50	50
Motor/Pump Speed (60Hz)	1725	1725	1725
Motor Horsepower (watts)	1/2 (370)	1/2 (370)	1/2 (370)
Oil Capacity, qt. (liters)	1.0 (0.95)	0.99 (0.86)	0.8 (0.76)
Tubing Needed, I.D. in.5	13/16, 7/6	13/16, 7/6	13/16, 7/6
Intake Connection	Unibarb	Unibarb	Unibarb
Exhaust Connection6	1-20	1-20	1-20
Weight, lbs (kg)	40(18)	41(18)	48(22)
Dimensions L x W x H in. (cm)	18.5x6.5x9.6 (47.1x16.5x24.3)	18.5x6.5x9.6 (47.1x16.5x24.3)	18.5x6.5x9.6 (47.1x16.5x24.3)
Ship Weight, lbs (kg)	46(21)	46(21)	53(24)
Shipping Carton Dimensions L x W x H in. (cm)	28.9x10.7x13.6 (74x25.8x35)	28.9x10.7x13.6 (74x25.8x35)	28.9x10.7x13.6 (74x25.8x35)

Two-stage pumps should not be operated continuously at pressures above 10 Torr.

Notes:

4. Models 8905 through 8925 include Unibarb.
5. Two-stage pumps should not be operated continuously at pressures above 10 Torr.
6. Exhaust filters not included. See Accessories - Exhaust filters for selection.

ACCESSORIES

• Exhaust Filters
• Pump Oil
• Repair Kits
• General Accessories

Pump Accessories	8907/8912	8917
Standard Exhaust Filter		1417P-7 $264.51
Replacement Filter Element	1417Q $86.91	1417R $107.94
Directional Exhaust Filter	1417A $377.02	1417A $377.02
Replacement Filter Element	1417G $128.44	1417G $128.44
Exhaust Mist Eliminator	1416C $421.97	1416C $421.97
Exhaust Connectors to Hose	1393K $65.10	1393K $65.10
Exhaust Connectors to ISO Flange	1393G $75.67	1393G $75.67
ISO Hinged Clamps	302202 $23.48	302202 $23.48
ISO Centering Rings	303102 $23.48	303102 $23.48
Dry Ice Traps
Coaxial Traps
Molecular Sieve Trap	543002 $671.24	543002 $671.24
Liquid Nitrogen Cold Trap
Hose Adapter	501262 $32.27	501262 $32.27
Unibarb Inlet Connector	8907K-06 $80.01	8907K-06 $80.01