Wafer Body Style (Centric)
Sizes Ductile Iron Valves: 2’’ (DN50) to 24’’ (DN550)
Size Stainless Steel Valves: 1-1/4’’ (DN32) to (DN200)
Lever Operator: Hand Lever / Gearbox.
Actuator: ISO 5211 Pneumatic / Electric
Working Pressure: PN10/16, ASME CL 150 (Stainless Steel Valve Class 150 “PN20”)
Disc: Stainless Steel
Shaft: Stainless Steel
Lining Sealing: EPDM
Lining Sealing: Metal / Metal (Stainless Steel Valve)
Standards
Design: BS EN 593
Face to Face: EN558-1
Flange: BS EN1092, ANSI/ASME B16.5
Mounting Pad: ISO 5211
Hydrostatic Test Pressure: PN x 1.1, for shell: PN x 1.5 according to EN 12266-1.
Certificate: 3.1 on request.
Valves according to: API-609 are available
Concentric Double Flanged Type
Sizes: DN50 to DN300
Valve Actuator: Hand Lever Standard (Gearbox with Hand wheel By Request)
Working Pressure: 10/16 Bar
Disc Strength: 15/24 Bar
Seat Test Pressure: 11/17.6 Bar
Body Material: Ductile Iron
Coating: Fusion Bonded Epoxy
Lining Sealing: EPDM
Standards
Design: BS EN 593
Face to Face: EN558-1
Flange: BS EN 1092 10/16, ANSI B16.1
Mounting Pad: ISO 5211
Hydrostatic Test Pressure: PN x 1.1, for shell: PN x 1.5 according to EN 12266-1.
Certificate: 3.1 on request.
Valves according to: API-609 are available
Lug Body Style (Centric)
Sizes: 1’’ (DN25) to 24’’ (DN550)
Lever Operator: Hand Lever / Gearbox.
Actuator: ISO 5211 Pneumatic / Electric
Working Pressure: PN10/16, ASME CL 150 available
Body Material: Ductile Iron / Stainless Steel
Disc: Stainless Steel
Shaft: Stainless Steel
Lining Sealing: EPDM
Standards
Design: BS EN 593 /
Face to Face: EN558-1
Flange: BS EN1092, ANSI/ASME B16.5
Mounting Pad: ISO 5211
Hydrostatic test pressure for seat: PN x 1.1, for shell: PN x 1.5 according to EN 12266-1.
Certificate: 3.1 on request.
Valves according to: API-609 are available
BUTTERFLY VALVES
The butterfly valve is a rotary motion valve that is used as a throttling valve to control flow through a system.
Butterfly valves offer several advantages including quarter-turn, openness for less plugging, and good control capabilities.
Function
Can be used for on/off service or throttling. When a valve throttles or modulates the flow it is controlling the speed and capacity of media through the valve.
Types
Concentric Flanged Type
Lug Body Style
Wafer Body Style
Concentric Flanged Type has the center of rotation moved back from the centerline of
the valve disc. The design relies on a frictional interference seal between the seal and seat which
are designed conically and on center. Suitable for dual flow operation, hydrodynamic flow,
reduced turbulence, to minimize pressure drop across the valve
Lug Body Style has protruding legs that provide bolt holes matching those in the pipe flange.
This style has metal inserts installed in the valve’s bolt holes. The valve is installed between
two flanges using a separate set of bolts for each flange. The advantage of the lug body style is
it allows for dead-end service or removal of downstream piping.
Wafer Body Style is installed between two flanges using bolts or nuts and studs.
It does not have protruding legs. The shape is light-weight and has a lower initial and installation cost.
However, some wafer body styles will not form a proper seal so care should be taken to avoid placing it
between slip-on or screwed flange types. Wafer style valves are easier to replace and install.