3 R 74 en 31
12 TYPE CODE
12.1 Series RA
V-port segment valve, series RA
1. 2. 3. 4. 5. 6. 7.
RA A 100 A S _
1. C
V
-CODE FOR VALVE SIZE DN 25 (01")
STANDARD CV
Without sign
Q-TRIM
Q Low noise and anti-cavitation trim
NON-STANDARD CV
C005- Max. C
v
= 0.5
C015- Max. C
v
= 1.5
C05- Max. C
v
= 5.0
C15- Max. C
v
= 15.0
2. PRODUCT SERIES / DESIGN
RA Wafer , reduced bore, Neles face-to-face lenght, body PN 40* / ASME Class 300**
* DN 250 body only acc. to DIN PN 40. **Max. shut-off pressure for trim, see Table 1
3. CONSTRUCTION
A Standard, drive shaft with keyway
Y Special
4. SIZE
In millimetres:
025, 040, 050, 065, 080, 100, 150, 200, 250
5. BODY SEGMENT SCREWS
SHAFT, PINS /
BEARINGS
A
CF8M AISI 329 +
HCr
A2-70 AISI 329 /
PTFE
S
CF8M AISI 329 A2-70 AISI 329 /
PTFE
H
CW-6M
(Hastelloy C)
CW-6M A2-70 Hastelloy C/PVDF
U
CK3MCuN
(SMO)
ASTM A351
gr. CK3MCuN
+ ceramic
coating (TiO)
A2-70 UNS31254/filled
PTFE on SMO
254 net
Seals for above: Gland packing:
Blind flange:
PTFE V-ring type
PTFE
Y Special
6. SEAT MATERIAL AND CONSTRUCTION
S Stainless steel + Cobalt based hard facing, filled PTFE lipseal
T
X-treme sizes 1"-6", metal body, back seal PTFE lip seal.
PTFE+C25 % sizes 8" and bigger, metal body, back seal PTFE lip seal.
E Cobalt based alloy, erosion resistant version, non-tight
U Titanium, back seal virgin PTFE lip seal/titanium spring
7. FLANGE FACING
STANDARD
Without sign: Stock Finish (Ra 10-12.5)
NON-STANDARD
/Y Special
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