Transcript CONTROL VALVES KOSO HAMMEL DAHL

CONTROL VALVES
KOSO HAMMEL DAHL
V701 Series
Venturi Seat Valve
CONTROL VALVES
KOSO HAMMEL DAHL
V701 Series
• Size range: 1” – 16”
• ANSI Class 150 – 600
– Class 1500 & 2500 also available
• Body Materials: CS, SS, CM
• End Connection: Flanged (retains seat ring)
• Trim
– 17-4PH and 316SS available
– Chrome-Iron for severe services
• As hard as tool steel, HRC 53 (min.)
CONTROL VALVES
KOSO HAMMEL DAHL
V701 Design
• Designed for erosive
services
– Slurries: Alumina Bauxite
– Flashing services: power
plants prior to anti-cavitation
trims
• Expanded body reduces
fluid velocity by 50%
• Large diameter stem and
long guide engagement
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KOSO HAMMEL DAHL
Venturi Seat
• Flow over design
• Venturi seat reduces
outlet velocity as it enters
downstream pipe or
vessel.
• Often connected directly
to vessel or sacrificial
pipe.
• Reduced trim is standard
– Full may be available
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KOSO HAMMEL DAHL
V701 Bonnets
• Clamp bonnet
– Union nut
– Pressure seal
– Holds plate
for bonnet
mount
• Bolted bonnet
– Integral
actuator
mounting pad
1” – 8”
10” – 16”
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KOSO HAMMEL DAHL
Actuator Selection
• Flow over and high seat load
require stiff high thrust
actuators.
– Perfect application for REXA
• Historically used
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Pnuematic pistons (Conoflow)
Hydraulic pistons (Ortman)
Rotomotor (Hammel Dahl)
Some small units have used S/D
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KOSO HAMMEL DAHL
Rotomotor
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All pneumatic
Heavy duty
Gear driven
Integral positioner
High thrust / torque
Long stroke
Once state of the art
– now long obsolete
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KOSO HAMMEL DAHL
Rotomotor Operation
• Pneumatic
positioning
system
• 4-way pilot
valve
• Reversible
air driven
motor
• Gear drive
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KOSO HAMMEL DAHL
Rotomotors on 14” V701 in Louisiana
CONTROL VALVES
KOSO HAMMEL DAHL
Bayer Process
To turn bauxite into alumina;
• Grind the ore & mix it with lime and caustic soda
• Pump mix into high-pressure containers & heat
• The aluminum oxide is dissolved by the caustic
soda, then precipitated out of this solution,
washed, and heated to drive off water.
• What’s left is the white powder called alumina,
which is transformed into aluminum metal in the
smelting process.
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KOSO HAMMEL DAHL
Bauxite Processing
• Digestion
• Clarification
• Precipitation
• Calcincation
CONTROL VALVES
KOSO HAMMEL DAHL
Voith Hydro
• Needle Valves, 8” – 16”
• Bypass / start-up for Main
control valve
CONTROL VALVES
KOSO HAMMEL DAHL
CONTROL VALVES
KOSO HAMMEL DAHL
CONTROL VALVES
KOSO HAMMEL DAHL
Valtek - Survivor
• This is what
Valtek does
– Unbalanced
– Flow over
– Piston
• Optional PSZ
ceramic trim
• Fisher – 461
• Caldera Eng.
CONTROL VALVES
KOSO HAMMEL DAHL
Industrias Controlpro S.A. de C.V.
Blvd. Antonio L. Rodríguez No. 3058 Desp. 404-B Plaza Delphi
Col. Santa Maria, Monterrey Nuevo León C.P. 64650
Teléfonos: (81) 8356-2582, (81) 8356-1907, (81) 8356-1898
[email protected]
www.industriascontrolpro.com