490 50L233S5F F07 D11

Butterfly valve, bare shaft

Item number: 88869630
Description
Type 490 Butterfly valve, bare shaft Edessa
DN 50 DN 50
Body configuration L Flange-mounted version (Lug), length FTF EN 558 series 20
Operating pressure 2 10 bar
Connection type 3 PN 16 / flange EN 1092, face-to-face dimension FTF EN 558 series 20
Body material 3 EN-GJS-400-18-LT (GGG-40.3), epoxy coated 120 µm
Disc/shaft material S 1.4469, DUPLEX, steel, for DN 40 - DN 200 (disc/shaft), 1.4404 / 316L, stainless steel, for DN 250 - DN 1200 (disc), 1.4462, DUPLEX, steel, for DN 250 - DN 1200 (shaft)
Shut-off seal material 5F TFM/FKM
Actuator flange F07 F07, flange type DIN EN ISO 5211
Shaft connection and size D11 Square, diagonal, WAF 11 mm
Shaft length 17 17 mm

This article is listed as a Dual-Use-good according to Regulation EU 2021/821 under Control list No. 2B350g. If these goods are supplied to countries outside the EU, the relevant export restrictions apply.
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The GEMÜ 490 Edessa PTFE-lined butterfly valve has a bare shaft. The disc and shaft are one piece; body and liner are available in different designs. The butterfly valve is available in nominal sizes DN 25 to 1200 (1"–48"), in the standardized installation lengths: ISO 5752/20 | EN 558-1/20 | API 609 category A (DIN 3202 K1) available in wafer and lug body versions.

  • Suitable for chemically corrosive media
  • Bubble tight sealing, in accordance with EN 12266-1/P12, leak rate A
  • High-quality selection of materials can be combined in different ways
  • High level of plant reliability thanks to one-piece shaft and spring-washer-supported seal system
  • Long service life thanks to shaft bearings and special disc and liner geometry