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GEMÜ 490 Edessa

Butterfly valve with bare shaft

  • Description
  • Features
  • Technical specifications

The GEMÜ 490 Edessa PTFE seal butterfly valve has a bare shaft. The disc and shaft are one piece; the body and liner are available in different designs. The butterfly valve is available in nominal sizes DN 25 to 1050 (1½"–36"), in the standard 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
  • 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
  • Connection: Flange (lug); Flange (wafer)
  • Actuator: With bare shaft
  • Seal material
  • Body material: 1.4404, block material; EN-GJS-400-18-LT, SG iron material; S355J2 + N, cast steel material; VE Duroplast, reinforced
  • Conformities: ATEX; EAC; FDA; SIL; TA Luft (German Clean Air Act); USP
  • Max. operating pressure: 10 bar
  • Max. media temperature: 200 ° C
  • Min. media temperature: -20 ° C
  • Nominal sizes: DN 40 (1 1/2''); DN 50 (2''); DN 65 (2 1/2''); DN 80 (3''); DN 100 (4''); DN 125 (5''); DN 150 (6''); DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 900; DN 1000

Product video

How butterfly valves work

00:38 min
1487 Views
Online since 16.09.2015
More videos
GEMÜ valves in plants for modern sludge recycling
Further applications

Product applications

GEMÜ valves in plants for modern sludge recycling

Large sewage clarification plants, such as the urban drainage department of Stuttgart, recycle their sludge in mono-combustion plants. GEMÜ valves in the plant design ensure the safety and reliability of processes when it comes to drying sludge.