13
Position
Material
Description
Q. for Pump
19b
AISI
Nuts collector
8
21
AISI
Screw casing
20
21a
AISI
Washers
20
21b
AISI
Nuts
20
23
AISI
Screw silencer grid
4
24
AISI
Screw cover pneumatic exchanger
1
31
NBR
O-ring silencer
1
32
NBR
O-ring upper for plastic-aluminium
4
32
FPM
O-ring upper for plastic-aluminium
4
32
EPDM
O-ring upper for plastic-aluminium
4
32
PTFE
O-ring upper for plastic-aluminium
4
32
NBR
O-ring upper for AISI
4
32
FPM
O-ring upper for AISI
4
32
EPDM
O-ring upper for AISI
4
32
PTFE
O-ring upper for AISI
4
33
NBR
O-ring lower
4
33
FPM
O-ring lower
4
33
EPDM
O-ring lower
4
33
PTFE
Gasket lower
4
42
POM-c
Command bush with O-ring new version
1
43
STEEL
Seeger pneumatic exchanger
1
44
STEEL
Seeger pneumatic exchanger
1
45
PP + VTR
Cover pneumatic exchanger
1
46*
AISI
Reinforcing ring
2
47
PP
Stroke spacer
2
*ACCESSOIRES
The maximum temperature referred to water in continuous operation depends on the version of the
materials (indicated on the rating plate) and on the environment in which the pump will be installed:
The pump may be operated at a maximum pressure equal to 1.5 times the head value with closed
delivery.
The value of the vapor pressure of the pumped fluid must be greater (of at least 3 mwc - meters of
water column) than the difference between the total absolute head value (pressure on suction level
subtracted of the suction height) and the leakages of the suction section.
The pumped fluid may contain particles suspended in different concentrations in accordance with the
type of valve assembled:
4. OPERATING PRINCIPLE
The pneumatic distribution system sends compressed air behind one of the two Diaphragm (A), which
pushes the fluid towards the delivery circuit. Simultaneously, the opposite diaphragm (B) is in the
intake phase since it is dragged by the shaft that connects it to the other diaphragm (A) under pressu-
re; air present behind it is discharged into the environment through the flow rate regulator present on
the pump , while a pressure drop is created in the fluid chamber which sucks the fluid from the suction
circuit. When the diaphragm (A), under pressure, reaches the stroke limit, the distributor switches
the two inputs to the chamber on the Diaphragm air side, putting diaphragm (B) under pressure and
diaphragm(A) in discharge. When the pump reaches its original starting point, each diaphragm has
carried out one air discharge stroke and one fluid delivery stroke. This sequence of movements makes
up a complete pumping cycle.
VERSION
MAX TEMP.
ATEX ZONE 2
MAX TEMP.
ATEX ZONE1
PP / PC
60° C / 140° F
60° C / 140° F
VERSION
MAX - TEMP (°C / °F)
PP / PC
0 - 40° C / 14 - 104° F
MODEL
19 060
19 061
19 062
MAX DIM. mm. 3,5
3,5
7,5
Operating Instructions Diaphragm Pumps
GB
