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Pfeiffer Duoline™ Standard & Corrosive Rotary Vane Pumps

Features

Wide range of pumps with pumping speed of 1.3 up to 300 m³/h
Space-saving and ideal for systems integration
High pumping speeds with small dimensions
High operating reliability through integrated high vacuum safety valve
Non-ferrous metal version ensures additional operational safety
Also available as corrosive gas version
Long life and low maintenance thanks to magnetic coupling

Applications

All applications in low and medium vacuum
Ideal backing pump for turbo pumps and roots pumps
General laboratory use
Analytics
Chemical laboratory
Freeze drying
Process engineering

Dimensional Drawings

Specifications Table

Pump Model	Duo 1.6	Duo 3	Duo 6	Duo 11
Pumping Speeds	50 (Hz) 0.74 CFM 20.8 L/min 0.35 L/s 1.25 m3/hr 60 (Hz) 0.88 CFM 24.9 L/min 0.41 L/s 1.50 m3/hr	50 (Hz) 1.47 CFM 41.7 L/min 0.69 L/s 2.50 m3/hr 60 (Hz) 1.71 CFM 48.3 L/min 0.80 L/s 2.90 m3/hr	50 (Hz) 2.94 CFM 83.3 L/min 1.38 L/s 5.00 m3/hr 60 (Hz) 3.53 CFM 100.0 L/min 1.66 L/s 6.00 m3/hr	50 (Hz) 5.30 CFM 149 L/min 2.49 L/s 9.00 m3/hr 60 (Hz) 6.18 CFM 174 L/min 2.90 L/s 10.5 m3/hr
Ultimate Pressure	Total With Gas Ballast 3.00 x 10^-2 hPA 3.00 x 10^-2 mbar 3.00 x 10⁰ Pa 2.25 x 10^-2 Torr Total Without Gas Ballast 3.00 x 10^-3 hPA 3.00 x 10^-3 mbar 3.00 x 10^-1 Pa 2.50 x 10^-3 Torr	Total With Gas Ballast 3.00 x 10^-2 hPA 3.00 x 10^-2 mbar 3.00 x 10⁰ Pa 2.25 x 10^-2 Torr Total Without Gas Ballast 3.00 x 10^-3 hPA 3.00 x 10^-3 mbar 3.00 x 10^-1 Pa 2.50 x 10^-3 Torr	Total With Gas Ballast 3.00 x 10^-2 hPA 3.00 x 10^-2 mbar 3.00 x 10⁰ Pa 2.25 x 10^-2 Torr Total Without Gas Ballast 3.00 x 10^-3 hPA 3.00 x 10^-3 mbar 3.00 x 10^-1 Pa 2.50 x 10^-3 Torr	Total With Gas Ballast 3.00 x 10^-3 hPA 3.00 x 10^-3 mbar 3.00 x 10^-1 Pa 2.25 x 10^-3 Torr Total Without Gas Ballast 3.00 x 10^-3 hPA 3.00 x 10^-3 mbar 3.00 x 10^-1 Pa 2.25 x 10^-3 Torr
Cooling Method(s)	Method Convection	Method Convection	Method Convection	Method Convection
Motor Power HP (kW)	0.12 ( 0.09 )	0.24 ( 0.18 )	0.32 ( 0.24 )	0.40 ( 0.30 )
Inlet Flange	KF16	KF16	KF16	KF16
Exhaust Flange	KF16	KF16	KF16	KF16
Oil Type(s)	Hydrocarbon Oil Part: KJLSS20G1	Hydrocarbon Oil Part: KJLSS20G1	Hydrocarbon Oil Part: KJLSS20G1	Hydrocarbon Oil Part: KJLSS20G1
Oil Capacity Quarts (Liters) *Unless otherwise noted	0.42 ( 0.40 )	0.42 ( 0.40 )	0.53 ( 0.50 )	0.63 ( 0.60 )
Noise db(A)	48.0	53.0	51.0	55.0
Compression Stages	2	2	2	2
Series	Standard	Standard	Standard	Standard
Weight Lbs (kg)	21.1 ( 9.60 )	24.9 ( 11.3 )	35.2 ( 16.0 )	37.4 ( 17.0 )
Dimensions in. (mm.)	13.3 x 5.28 x 7.60 (337 x 134 x 193 )	12.9 x 5.04 x 7.80 (327 x 128 x 198 )	15.0 x 5.04 x 7.80 (381 x 128 x 198 )	16.6 x 5.04 x 7.80 (421 x 128 x 198 )
Technology	Wet	Wet	Wet	Wet

Specifications Table

Pump Model	Duo 35	Duo 35C	Duo 65	Duo 65C	Duo 125	Duo 255
Pumping Speeds	50 (Hz) 18.8 CFM 533 L/min 8.85 L/s 32.0 m3/hr 60 (Hz) 21.2 CFM 600 L/min 9.96 L/s 36.0 m3/hr	50 (Hz) 18.8 CFM 533 L/min 8.89 L/s 32.0 m3/hr 60 (Hz) 21.2 CFM 600 L/min 10.0 L/s 36.0 m3/hr	50 (Hz) 36.5 CFM 1033 L/min 17.2 L/s 62.0 m3/hr 60 (Hz) 41.2 CFM 1166 L/min 19.4 L/s 70.0 m3/hr	50 (Hz) 36.5 CFM 1033 L/min 17.2 L/s 62.0 m3/hr 60 (Hz) 41.2 CFM 1166 L/min 19.4 L/s 70.0 m3/hr	50 (Hz) 67.7 CFM 1916 L/min 31.8 L/s 115 m3/hr 60 (Hz) 79.5 CFM 2249 L/min 37.3 L/s 134 m3/hr	50 (Hz) 147 CFM 4165 L/min 69.2 L/s 250 m3/hr 60 (Hz) 176 CFM 4999 L/min 83.0 L/s 299 m3/hr
Ultimate Pressure	Total With Gas Ballast 3.00 x 10^-3 hPA 3.00 x 10^-3 mbar 3.00 x 10^-1 Pa 2.25 x 10^-3 Torr Total Without Gas Ballast 3.00 x 10^-3 hPA 3.00 x 10^-3 mbar 3.00 x 10^-1 Pa 2.25 x 10^-3 Torr	Total With Gas Ballast 3.00 x 10^-3 hPA 3.00 x 10^-3 mbar 3.00 x 10^-1 Pa 2.25 x 10^-3 Torr Total Without Gas Ballast 2.00 x 10^-3 hPA 2.00 x 10^-3 mbar 2.00 x 10^-1 Pa 1.50 x 10^-3 Torr	Total With Gas Ballast 3.00 x 10^-3 hPA 3.00 x 10^-3 mbar 3.00 x 10^-1 Pa 2.25 x 10^-3 Torr Total Without Gas Ballast 2.00 x 10^-3 hPA 2.00 x 10^-3 mbar 2.00 x 10^-1 Pa 1.13 x 10^-3 Torr	Total With Gas Ballast 3.00 x 10^-3 hPA 3.00 x 10^-3 mbar 3.00 x 10^-1 Pa 2.25 x 10^-3 Torr Total Without Gas Ballast 3.00 x 10^-3 hPA 3.00 x 10^-3 mbar 3.00 x 10^-1 Pa 2.25 x 10^-3 Torr	Total With Gas Ballast 4.00 x 10^-3 hPA 4.00 x 10^-3 mbar 4.00 x 10^-1 Pa 3.00 x 10^-3 Torr Total Without Gas Ballast 2.00 x 10^-3 hPA 2.00 x 10^-3 mbar 2.00 x 10^-1 Pa 1.50 x 10^-3 Torr	Total With Gas Ballast 4.00 x 10^-3 hPA 4.00 x 10^-3 mbar 4.00 x 10^-1 Pa 3.00 x 10^-3 Torr Total Without Gas Ballast 3.00 x 10^-3 hPA 3.00 x 10^-3 mbar 3.00 x 10^-1 Pa 2.25 x 10^-3 Torr
Cooling Method(s)	Method Convection	Method Convection	Method Convection	Method Convection	Method Convection	Method Convection
Motor Power HP (kW)	1.74 ( 1.30 )		2.41 ( 1.80 )	1.74 ( 1.30 )	6.03 ( 4.50 )	12.1 ( 9.00 )
Inlet Flange	KF40	KF40	KF40	KF40	ISO63-K	ISO100-F
Exhaust Flange	KF40		KF40	KF40	KF63	ISO100-F
Oil Type(s)	Hydrocarbon Oil Part: KJLSS20G1	Hydrocarbon Oil Part: KJLSS20G1	Hydrocarbon Oil Part: KJLSS20G1	Hydrocarbon Oil Part: KJLSS20G1	Hydrocarbon Oil Part: KJLSS20G5	Hydrocarbon Oil Part: KJLSS20G5
Oil Capacity Quarts (Liters) *Unless otherwise noted	3.36 ( 3.20 )	3.38 ( 3.20 )	4.41 ( 4.20 )	3.36 ( 3.20 )	14.7 ( 14.0 )	26.3 ( 25.0 )
Noise db(A)	61.0	≤52 Db (A)	61.0	62.0	75.0	75.0
Compression Stages	2	2	2	2	2	2
Series	Standard		Standard	Corrosive	Standard	Standard
Weight Lbs (kg)	149 ( 68.0 )	149 ( 68.0 )	165 ( 75.0 )	162 ( 74.0 )	496 ( 225 )	793 ( 360 )
Dimensions in. (mm.)	26.0 x 9.45 x 13.4 (661 x 240 x 340 )		29.2 x 9.45 x 13.4 (741 x 240 x 340 )	26.0 x 9.45 x 13.4 (661 x 240 x 340 )	45.9 x 15.6 x 20.7 (1166 x 396 x 526 )	55.4 x 18.1 x 26.4 (1407 x 460 x 670 )
Technology	Wet	Wet	Wet	Wet	Wet	Wet

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Ordering Table

(Click column headers to sort data)

Accessories	Pump Model	Inlet Flange	Voltage & Phases	Manual	Part Number	Price	In Stock	Add To Cart
Accessories	Pump Model	Inlet Flange	Voltage & Phases	Manual	Part Number	Price	In Stock	Add To Cart
	Duo 125	ISO63-K	3 Phase Motor, 265/460 VAC	--	PKD47602	P.O.R.
	Duo 125	ISO63-K	3 Phase Motor, 220/380 VAC	--	PKD47652	P.O.R.
	Duo 255	ISO100-F	3 Phase Motor, 265/460 VAC	--	PKD48602	P.O.R.
	Duo 255	ISO100-F	3 Phase Motor, 220/380 VAC	--	PKD48652	P.O.R.
	DUO 1.6	KF16	230/240–230/240 VAC,50/60 Hz,		PKD56112B	P.O.R.
	DUO 3	KF16	115/230–115/230 VAC,50/60 Hz,1-Ø		PKD57711A	P.O.R.
	DUO 6	KF16	115/230–115/230 VAC,50/60 Hz,1-Ø		PKD58711A	P.O.R.
	DUO 11	KF16	115/230–115/230 VAC,50/60 Hz,1-Ø		PKD59711	P.O.R.
	DUO 35	KF40	218-242/380-420–250/277/440-480 VAC,50/60 Hz,		PKD45602A	P.O.R.
	DUO 35	KF40	220-380 VAC,60 Hz,3-Ø		PKD45642D	P.O.R.
	DUO 35 C	KF40	230/400–265/460 VAC,50/60 Hz,3-Ø		PKD45202E	P.O.R.
	DUO 65	KF40	230/400–265/460 VAC,50/60 Hz,3-Ø		PKD46602E	P.O.R.
	DUO 65	KF40	220/380 VAC,60 Hz,3-Ø		PKD46642D	P.O.R.
	DUO 65 C	KF40	218-242/380-420–250/277/440-480 VAC,50/60 Hz,		PKD46202A	P.O.R.

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Accessories Table

For Pump Model(s)	Description	Part Number	Price	In Stock	Add To Cart
For Pump Model(s)	Description	Part Number	Price	In Stock	Add To Cart
DUO 35, DUO 35 C, DUO 65, DUO 65 C	Auto-Soft Flow Actuated Check Valve (KF40)	225-0040	P.O.R.
Duo 1.6, Duo 11, Duo 3, Duo 6	Clamping Kit, For QF16 Flange, Including Aluminum Clamp and FKM Centering Ring	QF16-HDKIT	P.O.R.
Duo 35, Duo 35C, Duo 65, Hi Cube Eco DN40 ISO-KF	Clamping Kit, For QF40 Flange, Including Aluminum Clamp and FKM Centering Ring	QF40-HDKIT	P.O.R.
Duo 125	Clamping Kit, For QF63 (ISO63-K) Flange, Including (4) Cold Steel Zinc Plated) Clamp and FKM Centering Ring	QF63K-HDKIT	P.O.R.
DUO 1.6, 3, 6, 11	Clamp, Aluminum, QF16, Cast 1/2" & 3/4"	QF16-075-C	P.O.R.
DUO 35C, 65C	Clamp, Aluminum, QF40, Cast 1-1/2"	QF40-150-C	P.O.R.
DUO 1.6, 3, 6, 11	Centering Ring, SS, QF16, FKM	QF16-075-SRV	$6.75
DUO 35C, 65C	Centering Ring, SS, QF40, FKM	QF40-150-SRV	$13.10
DUO 1.6, 3, 6, 11	Gas Ballast Valve With Magnet Valve	PK194343-U	P.O.R.
DUO 1.6, 3, 6, 11	Gas Ballast Valve C Version	PK194144-U	P.O.R.
DUO 35, 65	Gas Ballast Valve With Magnet Valve	PK223717-U	P.O.R.
DUO 35, 65	Gas Ballast Valve C Version	PK223713-U	P.O.R.
DUO 125, 255	Gas Ballast Valve With Magnet Valve	PK215795-T	P.O.R.
DUO 1.6, 3, 6, 11	230V Mains Cable with CEE 7 Safety Plug, Right Angle IEC 320/C13 Socket, 2m	PK050109	P.O.R.
DUO 1.6, 3, 6, 11	Mains Cable, 2M With Nema Plug	PK050110	P.O.R.
DUO 1.6, 3, 6, 11	Mains Cable, 3M Without Plug	PK050111	P.O.R.
DUO 1.6, 3, 6, 11	Rt Angle Valve, SS, QF16, Manual, 3/4" Port, FKM Sealed	SA0075MVQF	$289.00
DUO 35C, 65C	Rt Angle Valve, SS, QF40, Manual, 1.5" Port, FKM Sealed	SA0150MVQF	$330.00
DUO 1.6, 3, 6, 11, 20, 35, 65, 125, 225	KJLSS 20 Oil (1 gallon)	KJLSS20G1	$45.00
DUO 35, 65	Oil Mist Eliminator	104887	P.O.R.
DUO 35C, 65C	Oil Mist Eliminator	PKZ40152	P.O.R.
DUO 125, 225	Oil Mist Eliminator	PKZ40012	P.O.R.