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Piston pumps

Description

The pneumatically driven Krautzberger piston pump sucks the coating substance from the material container through a suction hose or a suction pipe and subjects it to pressure. When it leaves the spray gun, the medium is atomised through a special nozzle by the high pressure. The hydraulic piston is a differential piston and moves up and down in the working cylinder of the hydraulic section.

During the upward stroke, the ball of the suction valve and the coating medium is sucked into the lower chamber of the working cylinder. At the same time, the ball of the pressure valve in the piston is pressed onto its seat and the medium displaced from the upper ring chamber of the working cylinder into the pressure line. During the downward stroke, the ball of the suction valve is pressed onto its seat and the ball of the pressure valve moves upward. The piston displaces half of the medium from the lower chamber of the working cylinder into the upper chamber and the other half into the pressure line. The piston rod of the air piston motor is connected to the pump piston and transmits the motion in a linear fashion. The piston motion is generated by the alternating feed of compressed air to the air motor piston and controlled by a four-way air valve.

As long as compressed air is fed into the control section via the pressure reducing valve, the thrust piston motor continues to operate until the pump has built up a sufficient hydraulic pressure in the pressure line to counterbalance the thrust of the incoming compressed air. The pump then remains in quiescent position until the hydraulic pressure begins to fall as a result, for example, of operation of the spray gun. The pump then continues to pump and maintains the dynamic equilibrium between air pressure and hydraulic pressure. The selected nozzle size and the set spraying pressure determine the stroke rate (strokes per minute) and the air consumption and thus also the spraying capacity of the pump. All pump components in contact with the medium are made of high-grade stainless steel.

Photos/documents

Title Document type Languages
Chapter 5: Pumps Catalog extract
Languages Format Size
PDF 677.17 KB Download
PDF 614.07 KB Download
PDF 679.80 KB Download
PDF 675.69 KB Download
High-pressure pump 30-10 User manual
Languages Format Size
PDF 970.74 KB Download
PDF 1.17 MB Download
Piston pump 9-20 User manual
Languages Format Size
PDF 1.39 MB Download
PDF 1.35 MB Download
Piston pump 30-20 User manual
Languages Format Size
PDF 2.54 MB Download
PDF 511.93 KB Download
Piston pump 60-20 User manual
Languages Format Size
PDF 608.70 KB Download
PDF 675.93 KB Download
Piston pump 4-50 User manual
Languages Format Size
PDF 844.10 KB Download
PDF 1.02 MB Download
Piston pump 1-115 User manual
Languages Format Size
PDF 1.24 MB Download
Piston pump 5-115 User manual
Languages Format Size
PDF 692.07 KB Download
PDF 1.57 MB Download
Piston pump 11-115 User manual
Languages Format Size
PDF 1.25 MB Download
PDF 1.15 MB Download
Piston pump 22-115 User manual
Languages Format Size
PDF 1.29 MB Download
PDF 788.39 KB Download

Versions

22-11511-115Beize-Anl.60-20
22-11511-11560-20
22:111:14:160:1
230 cm³230 cm³100 cm³40 cm³
50505050
6 bar6 bar8 bar8 bar
Max. operating pressure132 bar66 bar32 bar480 bar
11.5 l/min11.5 l/min5 l/min2 l/min
23 l/min23 l/min10 l/min4 l/min
4-509-2030-201-115
4-509-2030-201-115
4:19:130:11.5:1
100 cm³40 cm³40 cm³230 cm³
50505050
8 bar8 bar8 bar6 bar
Max. operating pressure32 bar72 bar240 bar9 bar
5 l/min2 l/min2 l/min11.5 l/min
10 l/min4 l/min4 l/min23 l/min
30-5030-105-11515-50
30-5030-105-11515-50
30:130:15:115:1
100 cm³20 cm³230 cm³100 cm³
50505050
8 bar8 bar6 bar8 bar
Max. operating pressure240 bar240 bar30 bar120 bar
5 l/min1 l/min11.5 l/min5 l/min
10 l/min2 l/min23 l/min10 l/min

Errors and changes reserved. Despite careful editing we cannot guarantee the acuracy of technical information.