Butterfly Valves

The answer to problems of: corrosion, abrasion, clogging, contamination, vacuum & gas handling

Hand and pneumatic operated butterfly valves are quick opening valves that consist of a metal disc (lined where necessary) with its pivot axes at right angles to the direction of flow in the pipe.
They are leaktight on all liquids, slurries, granular materials, powders, pastes, gases acids etc…
Seat and disc are easily replaceable without any special tools. The wide range of available elastomer materials enables an appropriate selection for each application and is guarantee of perfect resistance to corrosion and abrasion.

PERFORMANCE FEATURES

RESILIENT SEATED CONCEPT

• Lower risk of damage due to tuberculation then metal on metal concept valve
• Long seat life: no metallic inserts to strain the elastomers
• Body valve designed and manufactured in one or two parts
• Special two parts body valve for quick and easy replacement of seat and disc
• No maintenance
• Long durability
• Epoxy painted, valve bodies protected with an anti-acid varnish

METAL ON METAL CONCEPT

• Metal seated valve for high temperature
• Body valve designed and manufactured in one part
• PTFE seated valve only available for temperature up to 200°

DISC MATERIALS

• Hard rubber lined A216 WCB carbon steel
• PFA lined
• Rilsan lined
• HALAR/ECTFE lined 304 or 316 or marine 316 Stainless steel
• SS 304; SS 316; SS 316 L
• Ductile iron
• Hastelloy C
• Aluminum bronze
• Duplex
• PVDF, PPH

DESIGN/DIMENSIONS APPLICABLE STANDARD

• ISO 5752

INSPECTION TESTS AVAILABLE BY

• SGS GLOBAL TRADE SOLUTIONS
• ITS INTERTEK TESTING SERVICES
• BV BUREAU VERITAS

OPTIONS

• Limit switches
• Solenoid valve
• Position indicator
• Air fitter regulator
• 3:15 PSI positioner
• 4:20mA electropneumatic positioner or 4:20mA electronic transmitter of position 30°-90° angle
• Mono/Triphase AC motor (240V/50Hz through 400V/50Hz)

DOWNLOAD CATALOUGUE

PRODUCT FEATURES

• To mount between flanges ANSI/BS/DIN/JIS
• Size from 2” through 24”
• Manual, pneumatic and electric operated

BODY VALVE MATERIALS

• Spheroidal cast iron GS400
• Aluminum
• A216 WCB carbon steel
• SS304; SS 316; SS 316 L
• PVDF, PPH

MATERIAL OF SEAT

• Natural rubber
• White natural rubber
• Neoprene
• EPDM
• Viton
• Butyl
• Nitrite
• Hypalon
• Silicone
• Neoprene/silicone (mixed)
• PTFEA

CERTIFICATES AVAILABLE

• EN 10204 3.1.B
• EN 10204 2.2

MAIOR MARKETS SERVED

• Chemical process
• Power generation
• Water treatment
• Mining
• Pulp & paper
• Nuclear
• Pharmaceutical
• Food & Beverage
• Sugar
• Oil process

G&O SERIES PNEUMATIC ACTUATORS

Piston type air operators line offer a great solution to a wide range of actuation situations. They are exclusively designed to G&O series butterfly valves and can be mounted in any position. These actuators are built in aluminum and are available in three options:
• single effect acting – fail to close (air to open)
• single effect acting – fail to open (air to close)
• double effect acting – fail to open & fail to close
Single effect acting actuators are fitted by an extractable handwheel for security.