Gemu 650 - Page 34

650
Special function Code
3-A compliant design M
Order example
650 50 D 60 40 54 1 4 T 1 1503 M
Type 650
Nominal size 50
Body configuration (code) D
Connection (code) 60
Valve body material (code) 40
Diaphragm material (code) 54
Control function (code) 1
Actuator size (code) 4
Actuator version (code) T
Spring set (code) 1
Surface finish (code) 1503
Special function (Code) M
Internal surface fi nishes for forged and block material bodies
1)
Readings for Process
Contact Surfaces
Mechanically polished
2)
Electropolished
Hygienic class
DIN 11866
Code
Hygienic class
DIN 11866
Code
Ra  0.80 m H3 1502 HE3 1503
Ra  0.60 m - 1507 - 1508
Ra  0.40 m H4 1536 HE4 1537
Ra  0.25 m
3)
H5 1527 HE5 1516
Readings for Process
Contact Surfaces acc. to
ASME BPE 2016
4)
Mechanically polished
2)
Electropolished
ASME BPE
Surface
Designation
Code
ASME BPE
Surface
Designation
Code
Ra Max. = 0.76 m (30 inch) SF3 SF3 - -
Ra Max. = 0.64 m (25 inch) SF2 SF2 SF6 SF6
Ra Max. = 0.51 m (20 inch) SF1 SF1 SF5 SF5
Ra Max. = 0.38 m (15 inch) - - SF4 SF4
Internal surface fi nishes for investment cast bodies
Readings for Process
Contact Surfaces
Mechanically polished
2)
Hygienic class
DIN 11866
Code
Ra  6.30 m - 1500
Ra  0.80 m H3 1502
Ra  0.60 m
5)
- 1507
1
Surface finishes of customized valve bodies may be limited in special cases.
2
Or any other finishing method that meets the Ra value (acc. to ASME BPE).
3
The smallest possible Ra finish for pipe connections with an internal pipe diameter < 6 mm is 0.38 m.
4
When using these surfaces, the bodies are marked according to the specifications of ASME BPE.
The surfaces are only available for valve bodies which are made of materials (e.g. GEMÜ material codes 40, 41, F4, 44)
and use connections (e.g. GEMÜ connection codes 59, 80, 88) according to ASME BPE.
5
Not possible for GEMÜ connection code 59, DN 8 and GEMÜ connection code 0, DN 4.
Ra acc. to DIN EN ISO 4288 and ASME B46.1
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