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

G&O Check valves are designed to standards of maximum simplicity and efficiency. The valve body can be supplied, on indications from customers, to fulfill specific requirements in use.

PERFORMANCE FEATURES

• Valves with most advanced designing features provide the ultimate in dependable, economic flow control
• Surface protection for ductile iron and cast steel Valves, Chlorine free prime coat with modified alkyd resin unobjectionable in physiological and toxicological respects. Additional external coating: Ename/Silver Streak aluminum paint

DISC & PLUG MATERIALS

• ASTM A276 Type 410, 304, 316
• ASTM A217 CA15
• ASTM A216 WCB
• ASTM A351 CF8, CF8m, CF3, CF3m
• ASTM A395
PVDF, PPH

BODY VALVE LINING MATERIAL

• Soft rubber
• Hard rubber (ebonite)
• Hypalon rubber
• ECTFE/HALAR
• Butyl rubber
• EPDM rubber
• Neoprene rubber
• PFA

END CONNECTIONS APPLICABLE STANDARD

• ANSI/ASME B16.5 Flanged Valves
• ANSI/ASME B16.1 Flanged Fittings
• ANSI/ASME B1.20.1 (NPT) Pipe Threads
• ANSI/ASME B16.34 Steel Valves
• ANSI/ASME B16.11 Socketweld Fittings
• ANSI/ASME B16.25 Buttweld Ends

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
• Triphase AC motor

DOWNLOAD CATALOUGUE

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PRODUCT FEATURES

• Simple three parts design for Non return Check valves, with only one moving part (disc), valve usable in vertical or horizontal plane.
• Light weight for Wafer type Check valves, bubble tight, low pressure loss. The eccentric shaft connection in combination with disc seat, guarantees a positive shut off of the returning medium.
• Light weight for Spring Loaded Check valve, short length, low pressure drop and positive shut off, achieved by unique spring loaded disc.
• Dual Plate and on-Slam Check valves are stronger, lighter and smaller than conventional swing check valves.
• Pressure Rating 7.0 bar, Class 150, 300, 600, 900, 1500, 2500
• Size from ½” through 6 4”

BODY VALVE MATERIALS

• ASTM A126 CLASS C
• ASTM A395
• ASTM 1216 WCB
• ASTM A351 CF8, CF8M, CF3, CF3M
• ASTM A105
• ASTM A182 F11, F22, F5, F9, F304, F316
• PVDF, PPH

GASKET O-RING VALVE MATERIAL

• Spiral wound 304, 316 with CAF
• Graphite
• PTFE filled
• EPDM (Other grades available on request)
• Compressed Asbestos free

DESIGN/TESTING APPLICABLE STANDARD

• G&O STD
• API 594
• BS 5352
• API 6D
• API 598

CERTIFICATES AVAILABLE

• EN 10204 3.1.B
• EN 10204 2.2
• LP/MP TESTS

MAIOR MARKETS SERVED

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

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.