Operating manual High-pressure double diaphragm pumps Cobra 40-10; Cobra 40-25
5 Description
20
Order number 2340851 | Edition 05/2022
5 DESCRIPTION
5.1 COMPONENTS
1
4
6
9
3
5
2
7
13
14
10
11
12
15
8
B_07936
Cobra 40-10
11
12
15
9
2
14
10
13
1
4
6
3
7
5
8
Cobra 40-25
1
Control housing with integrated si-
lencer
9
Fluid section
2
Air pressure regulator
10 Product input
3
Ball valve
11 Grounding connection
4
Air motor
12 Pressure stage casing
5
Compressed air input
13 Return socket
6
Mounting flange
14 Valve depressor
7
Relief valve
15 Exhaust air opening
8
Product output
5.2 FUNCTIONING
The double diaphragm pump is driven with compressed air. This compressed air moves the
air piston in the air motor (4), and consequently the piston rod in the pressure stage (9), up
and down. At the end of each stroke, the compressed air is redirected by a reversing valve
and the control piston. The up-and-down movement of both diaphragms within the fluid
section is produced by hydraulic oil, which is moved by the piston in the pressure stage.
With every stroke of the piston rod, working product is sucked in and delivered to the spray
gun at the same time.
5.2.1 Air Motor
The air motor with its pneumatic reverse (1) does not require pneumatic oil. The compressed
air is fed to the motor via the air pressure regulator (2) and the ball valve (3).
