6 Order data
Other configurations available on request.Please check the availability with GEMÜ before ordering.
Products ordered with
bold marked ordering options
are so-called preferred series. Depending on the nominal size, these are
available more quickly.
Order codes
1 Type
Code
Butterfly valve, pneumatically operated
R481
2 DN
Code
DN 50
50
DN 65
65
DN 80
80
DN 100
100
DN 125
125
DN 150
150
DN 200
200
DN 250
250
DN 300
300
3 Body configuration
Code
Flange-mounted design (lug),
face-to-face dimension FTF EN 558 series 20
L
Intermediate flange design (wafer),
face-to-face dimension FTF EN 558 series 20
W
4 Operating pressure
Code
3 bar
0
6 bar
1
10 bar
2
16 bar
3
5 Connection type
Code
PN 6 / flange EN 1092, face-to-face dimension FTF
EN 558 series 20
1
PN 10 / flange EN 1092, face-to-face dimension
FTF EN 558 series 20
2
PN 16 / flange EN 1092, face-to-face dimension
FTF EN 558 series 20
3
ANSI B16.5, Class 150, face-to-face dimension FTF
EN 558 series 20
D
Flange BS 10 Table "D", face-to-face dimension
FTF EN 558, series 20
H
Flange BS 10 Table "E", face-to-face dimension FTF
EN 558, series 20
S
Flange AS 2129 Table "D", face-to-face dimension
FTF EN 558, series 20
T
Flange AS 2129 Table "E", face-to-face dimension
FTF EN 558, series 20
U
6 Body material
Code
EN-GJS-400-15 (GGG-40), epoxy-coated 250 μm
2
6 Continuation of Body material
Code
EN-GJS-400-18-LT (GGG-40.3), epoxy coated 250
µm
3
7 Disc material
Code
1.4408
A
1.4408, polished, roughness Ra 0.6-3.2, except
disc marking
B
1.4408, Halar coated
C
1.4469, super duplex
D
EN-GJS-400-15 (GGG-40), epoxy coated
E
EN-GJS-400-15 (GGG-40), HALAR coated
P
EN-GJS-400-15 (GGG-40), RILSAN PA11 coated
R
2.0975 / CC333G
G
1.4435 / ASTM A351 / CF3M / AISI 316L
I
8 Shaft material
Code
1.4021
1
9 Shut-off seal material
Code
EPDM
E
SBR-AB/P (abrasion resistant)
F
NBR (DVGW gas certification)
J
EPDM (FDA certification), white
M
NBR
N
FPM (FKM)
V
EPDM (ACS, WRAS, DVGW water, BELGAQUA
certification)
W
EPDM-HT (FDA certification)
Z
ECO
C
CSM
H
Silicone (MVQ-S, steam)
R
Silicone (MVQ)
S
NBR (FDA certification), white
U
10 Liner fixing
Code
Liner bonded into body
B
Loose liner
L
11 Type of design
Code
Without
Media wetted area cleaned to ensure suitability for
paint applications, parts sealed in plastic bag
0101
Valve free of oil and grease, media wetted area
cleaned and packed in PE bag
0107
6 Order data
www.gemu-group.com
8 / 41
GEMÜ R481