MD 1

Description

MD 1

The MD 1 diaphragm pump is an excellent choice for oil-free evacuation and pumping of non-corrosive gases down to 1.5 mbar ultimate vacuum. The three-stage design with precisely guided flat diaphragms provides outstanding pumping speed even close to the ultimate vacuum, especially when compared with similarly rated two-stage diaphragm pumps. The MD 1 is an ultra-low vibration pump with very long diaphragm lilfetimes and stable ultimate vacuum documented with years of testing. With a flow path consisting of aluminum and selected plastics (diaphragms and valves made of PTFE/FKM and FKM, respectively) the pumps are suitable for a wide range of applications with non-corrosive gases.

Performance features

contamination-free pumping and evacuation
high flow rate even near ultimate vacuum
excellent ultimate vacuum
whisper quiet and ultra-low vibration
proven long diaphragm life, maintenance-free drive system

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Technical data / Ordering data

Technical data

Technical data	Unit	MD 1
Number of heads / stages		4 / 3
Max. pumping speed at 50/60 Hz	m3/h	1.2 / 1.4
Max. pumping speed at 50/60 Hz	cfm	0.7 / 0.8
Ultimate vacuum (abs.)	mbar/torr	1.5 / 1.1
Ambient temperature range (operation)	°C	10 - 40
Ambient temperature range (storage)	°C	-10 - 60
Max. back pressure (abs.)	bar	1.1
Inlet connection		Hose nozzle DN 6 mm
Outlet connection		Silencer / G1/8"
Rated motor power	kW	0.08
Rated motor speed at 50/60 Hz	min-1	1500/1800
Degree of protection		IP 42
Dimensions (L x W x H)	mm	303 x 143 x 163
Weight	kg	6.5
Noise level at 50 Hz, typ.	dBA	40
ATEX conformity (only 230V)		II 3G IIC T3 X Internal Atm. only
Items supplied		Pump completely mounted, ready for use, with manual.
Accessories		Rubber vacuum tubing DN 6 mm (686000) Small flange KF DN 16 / G1/8" (637425)

MD 1 - Pumping speed graph at 50 Hz

MD 1 - Pump down graph at 50 Hz (10 l volume)

MD 1 - Pumping speed graph at 60 Hz

MD 1 - Pump down graph at 60 Hz (10 l volume)

MD 1 - Dimension sheet

-Technical data are subject to change without notice-

Ordering data

Product name	Mains voltage and frequency	Plug	Order no.
MD 1	200-230 V~ 50-60 Hz	CEE	696080
	200-230 V~ 50-60 Hz	CH, CN	696081
	200-230 V~ 50-60 Hz	UK	696082
	100-120 V~ 50-60 Hz	US	696083
	120 V~ 60 Hz	US	696073
	200-230 V~ 50-60 Hz 100-120 V~ 50-60 Hz	IEC plug EN 60320	696087

696073: With NRTL certification for Canada and the USA

Product comparison



MD 1	-	1.5	-	1.2	1.4	-	-	-	-	-	-	-	-	-	-
MD 4 NT	-	1	-	3.8	4.3	-	-	-	-	-	-	-	-	-	-
MD 4 NT VARIO	-	1	-	5.7	5.7	-	-	-	-	-	-	-			-
MD 12	-	2	-	9.6	10.4	-	-	-	-	-	-	-	-	-	-
MD 12 NT	-	2	-	12.1	13.3	-	-	-	-	-	-	-	-	-	-