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阀门 - 隔膜阀
Diaphragm Valves from Selfa are the standard range of UHP diaphragm valves within a large group of companies which are engaged in building high-tech systems in cleanroom environments.
The valves are cleaned, assembled and packaged in a cleanroom enivronment according to UHP specifications. Moreover, they are available in 3 different internal finishes: 0,15 / 0,25 / 0,40 Ra µm, various port configurations with pneumatic or manual actuation.
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Article group
Polishing
Surface finish [Ra]
Material seal
Material seat
Configuration valve
Connection type
Material Actuation Handle
Material back-up Diaphragm (non-wetted parts)
He leak rate [mbar · l/s]
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- (67)
Electro polishing
- (63)
Mechanical polishing
- (10)
< 0,15 µm Ra
- (8)
< 0,18 µm Ra
- (49)
< 0,25 µm Ra
- (63)
< 0,4 µm Ra
- (1)
NBR
- (56)
NBR (O-ring)
- (7)
Metal
- (107)
PCTFE (Kel-F)
- (14)
PI (Vespel)
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PVDF
- (2)
2 ports 90 degree left
- (110)
2 ports in line
- (2)
2 ports in line, 2 purge ports upstream/downstream/left side
- (2)
2 ports in line, downstream purge ports - left side
- (2)
2 ports in line, upstream purge ports - left side
- (4)
3 port v5 (see picture)
- (1)
3 port v6 (see picture)
- (1)
3 port v7 (see picture)
- (4)
3 port v8 (see picture)
- (1)
4 port v12 (see picture)
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Buttweld/Buttweld/Buttweld
- (1)
Buttweld/Buttweld/Face seal female
- (2)
Buttweld/Buttweld/Face seal male
- (1)
Buttweld/Face seal male/Buttweld
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Face seal female
- (1)
Face seal female/Buttweld
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Face seal female/Face seal female
- (1)
Face seal female/Face seal female/Face seal female
- (2)
Face seal female/Face seal male
- (1)
Face seal female/Face seal male/Face seal female/Face seal male
- (2)
Face seal male/Buttweld
- (1)
Face seal male/Buttweld/Buttweld
- (12)
Face seal male/Face seal female
- (4)
Face seal male/Face seal female/Face seal female
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Face seal male/Face seal male
- (1)
Face seal male/Face seal male/Face seal male
- (1)
Gauge/Buttweld/Buttweld
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Aluminium
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Aluminium or Extruded Plastic
- (40)
Elgiloy
- (75)
Phynox
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UNS R30003 (Phynox)
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10-9 mbar · l/s
- (1)
Up to 10-9 mbar · l/s