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Direct Drive Oil-Sealed Rotary Vacuum Pumps GLD-280A
Two-stage / terminal only (without cord) / Without thermal protector

 
Features

Low ultimate pressure.
High performance type.
Features gasballast mechanism and bakflow prevention mechanism.
World wide voltages

Specifications
  Unit 50Hz 60Hz
Actual Pumping Speed L/min. 280 336
Ultimate pressure Pa

6.7 x 10-2 (6.7 x 10-1)(G.V.closed)
6.7 (G.V.open)

Motor   Three phase, 200-240V/380-460V, 750W, 4 poles
Full load current A 4.2 (200V), 4.4 (220V),
4.6 (230V), 4.8 (240V)
2.6 (380V), 2.8 (400V),
2.8 (415V)
4.0 (200V), 3.8 (220V),
3.8 (230V), 4.0 (240V)
2.2 (380V), 2.2 (400V),
2.3 (440V), 2.4 (460V)
Oil capacity mL 700 – 1,100
Recommended oil   R-7
Weight kg 32
Inlet port diameter mm KF-25
Ambient operation temp.range °C 7 – 40
Dimensions W x L x H
(mm)
181(W) x 544(L) x 269(H)
*Ultimate pressure is measured with Macleod gauge. In ( ) shows the measurements with Pirani gauge.

Caution
GLD Series, compared with G Series, is markedly upgraded. For the sake of having the maximum performance, in addition to notes for G series, be careful of also the followings.
1. GLD series is capable of reaching to a high vacuum area (10-2 Pa). Flanges, vessels usable at a high vacuum are required.
2. An oil-sealed rotary pump is not recommended for continuous operation near atmospheric pressure.

Outline drawing


Pumping Speed Curves


Option
Optional suction port
Size
Note
KF-25 suction port KF-25 X (50X50)
Attached to standard type
Suction pipe for hose Dia.15
Option. 50X50adapter is needed, use the suction pipe /50X50 adapter
Suction pipe for hose Dia.18
Option. 50X50adapter is needed, use the suction pipe /50X50 adapter
Suction pipe for hose Dia.22
Option. 50X50adapter is needed, use the suction pipe /50X50 adapter
Suction pipe for hose Dia.27 Option
Suction pipe for hose Dia.30 Option
Suction pipe for hose Dia.34 Option

Optional exhaust port
Size
Note
Exhaust port cap
-
Attached to standard type
Exhaust pipe for hose Dia.27 Option
KF-25 exhaust port KF-25 Option

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Copyright (C)2003 ULVAC KIKO, Inc. All Right Reserved. Ver.3.00 (November 2006)