GEMÜ 481 Victoria

Pneumatically operated butterfly valve

  • Description
  • Features
  • Technical specifications
  • Accessories

The GEMÜ 481 Victoria soft seated butterfly valve has a metal actuator and is pneumatically operated. The "Normally Closed", "Normally Open" and "Double Acting" control functions are available. The butterfly valve is available in nominal sizes DN 25 to 600 and in standard installation lengths ISO 5752/20 | EN 558-1/20 | API 609 category A (DIN 3202 K1) in wafer and lug body versions.

  • Low torques thanks to special disc contour
  • Improved sealing
  • Extensive applications using a variety of materials
  • Robust body coating comparable to ISO 12944-6 C5
  • Fast operating times
  • Optional accessories are installed, set and tested so they are ready for operation
  • Min. 250 μm layer thickness body coating
  • Bubble tight sealing, in accordance with EN 12266-1/P12, leak rate A
  • Media temperature:-10 to 150 °C
  • Ambient temperature:-10 to 70 °C
  • Operating pressure :0 to 16 bar
  • Nominal sizes:DN 25 to 600
  • Body configurations:Lug | U section | Wafer
  • Connection standards:AS | ASME | BS | DIN | EN | ISO | JIS
  • Body materials:EN-GJS-400-15, SG iron material
  • Body coating:Epoxy
  • Liner materials:EPDM | FKM | NBR | SBR, abrasion resistant
  • Disc materials:1.4408, investment casting material | 1.4408, polished investment casting material | EN-GJS-400-15, SG iron material
  • Disc coating:EPDM | Epoxy | Halar® | Rilsan®
  • Conformities:ACS | ATEX | Belgaqua | DNV GL | DVGW Drinking water | DVGW Gas | EAC | FDA | WRAS

Fitting Accessories

Product video

Videotutorial: Modifying to an pneumatic NO NC actuator

03:32 min
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Online since 03.11.2021
GEMÜ butterfl y valves at the Trollmühle Waterworks - Uranium removal and partial deionization using Uranex® and Carix® procedures

Product applications

GEMÜ butterfl y valves at the Trollmühle Waterworks - Uranium removal and partial deionization using Uranex® and Carix® procedures

Currently, the waterworks at the Trollmühle water supply authority in Windesheim near Bingen am Rhein supply approximately 43,000 people in 14,000 households with 2.2 million m³ drinking water per year. At peak times, this means a daily dispensing volume of up to 8500 m³. On the one hand, Krüger WABAG / VWS Deutschland GmbH implemented the URANEX® system, which is used to minimise the water‘s geologically caused uranium content by means of ion exchange. On the other hand, partial deionization by ion exchange is achieved using the CARIX® procedure.

Product news

08.10.2018

Cast off for the GEMÜ 480 Victoria butterfly valve

The new DNV-GL certificate...