5
ENGLISH
INDUSTRIAL PNEUMATIC BUTTERFLY VALVE
1. DEFINITION
Butterfly valve for isolating the flow in liquid handling systems.
Design based on Standard EN ISO 16136 in accordance with Directive 97/23/EC.
The valve is available with PVC-U, CPVC, PP-H, PVDF and ABS discs and EPDM and FPM sealing gaskets. The choice of material for the
body and gaskets depends on the type of liquid to be carried and on the working temperature of the liquid, in accordance with the
chemical resistance tables available on our website and the pressure/temperature chart in this Manual.
The pneumatic actuator controls the positions of the valve (closed / open).
2. COMPONENTS
2.1 Actuated valve components
N
Description
Material
Q
1
Industrial Butterfly
valve bare shaft
Body: PP-GR
Disc: PVC-U/CPVC/PP-H/PVDF/ABS
1
2
Coupling bush
AISI-304
1
3
Mounting clamp
PP-GR
1
4
Pneumatic actuator
Anodised Aluminium / PA
1
5
Limit switch box
(OPTIONAL: different models available)
1
6
Solenoid valve
(OPTIONAL: different models available)
1
7
Screw DIN-912
Stainless steel AISI-304
4
8
Screw DIN-912
Stainless steel AISI-304
4
9
Washer DIN-125
Stainless steel AISI-304
4
10
Nut DIN-934
Stainless steel AISI-304
4
11
Washer DIN-7980
Stainless steel AISI-304
4
12
Relief regulators
(OPTIONAL)
2
2.2 Valve components
N
Description
Material
DN50 -
DN200
DN250 -
DN300
1
Body
PP-GR
1
1
2
Sealing gasket
EPDM perox. / FPM
1
1
3
Disc
PVC-U/CPVC/PP-H/
PVDF/ABS
1
1
4
Upper bearing
POM
2
2
5
Auxiliary bearing
POM
1
1
6
Lower bearing
POM
1
1
7
Lower washer
POM
1
1
8
Shaft
AISI 630 / AISI 316L /
AISI 904L
1
1
9
Cap
PP
1
1
10
Ring DIN-471
Stainless steel AISI-304
1
1
11
O-ring
EPDM / FPM
2
4
12
O-ring
EPDM / FPM
2
4
13
O-ring
EPDM / FPM
2
4
14
Screw DIN-912
Stainless steel AISI-304
1
1
Fig. 1
4
6
1
2
3
5
10
9
7
8
11
12
Fig. 2
1
2
3
4
5
8
9
10
6
7
11
12
13
14