1. General knowledge of pump:
Pumps can be classified to three kinds which are positive displacement pumps, momentum transfer pumps and entrapment pumps according to its techniques.

2. Detailed features of MPD-36E DC Vacuum Pump:

1). Air output:
    5SCFH (7.5lpm) without load
    4LPM (100mmHg) with load
2). Power: 12V DC
3). Current: 1,200mA
4). Pump design: drive by DC motor
5). Pump body: plastic
6). Outlet and inlet diameter: 0.21-inch (5.4mm)
7). Noise level: 75dB
8). Dimensions: 3.1 x 1.6 x 2.7-inch (78.5 x 40 x 67.5mm)