CUERPOS Tapón excéntrico. CUERPOS Tapón excéntrico.
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CUERPOS Tapón excéntrico
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Transcript of CUERPOS Tapón excéntrico. CUERPOS Tapón excéntrico.
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STapón excéntrico
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STapón excéntrico
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STapón excéntrico
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STapón excéntrico
VENTAJAS Buen cierre Alta capacidad de flujo
(Cv)
Amplia rangeabilidad (160:1)
Opera bien en productos con contenido de fibras o muy viscosos
Excelente para vapor saturado
Disponible en puertos reducidos
DESVENTAJAS Chocan con caídas de
presión menores que las válvulas de globo
No es posible obtener sello Clase V
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Eccentric Plug Advantages
• High Cv s and good rangeability
• Good for high drops (1440 psi)
• Excellent for saturated steam
• Reduced trims available (70% and 40%)
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Eccentric Plug Disadvantages
• Class V shutoff unavailable
• Limited body materials (CS and 316 SS)
• Chokes at lower pressure drops than globe valves
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How good is your style selection expertise?
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Example 1Water @ 100o F
P1 = 480 psia
P2 = 450 psia
Air-to-open, fail-closed
10-inch sch. 40 pipe
Flow = 9100 gpm
Throttling
Max. P = 50 psi
Which valve style would you
select?
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SValdisk Valve(High-performance Butterfly)
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Example 2Water @ 100o F
P1 = 800 psia
P2 = 350 psia
Air-to-open, fail-open
2-inch sch. 40 pipe
Flow = 250 gpm
Throttling
Max. P = 785 psi
Which valve style would you
select?
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SMark One Valve(High-performance Globe)
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Example 34 - 6% brown stock @ 200o F
P1 = 60 psia
P2 = 48 psia
Air-to-open, fail-closed
8-inch sch. 40 pipe
Flow = 5000 gpm
Throttling, 316 SS body
Max. P = 45 psi
Line size valve
Which valve style would you
select?
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SShearStream Valve(Segmented Ball)
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Example 4Steam @ 500o F
P1 = 760 psia
P2 = 245 psia
Air-to-close, fail-open
6-inch sch. 40 pipe
Flow = 100,000 lb/hr
Throttling, 316 SS body
Max. P = 745 psi
SPL = 106 dBA w/o insulation
Which valve style would you
select?
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SMegaStream Valve(One-stage with insulation factor)
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Example 5Natural gas @ 200o F
P1 = 80 psia
P2 = 75 psia
Air-to-open, fail-closed
8-inch sch. 40 pipe
Flow = 1,100,000 scfh
Throttling, carbon steel body
Max. P = 80 psi
Min. valve size is 1 size < line size
Which valve style would you
select?
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SValdisk 150 Valve(High-performance Butterfly)
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Example 6Water @ 100o F
P1 = 450 psia
P2 = 90 psia
Air-to-open, fail-closed
4-inch sch. 40 pipe
Flow = 600 gpm
Throttling, carbon steel body
Max. P = 80 psi
Sigma required = 1.15 to 1.25
Which valve style would you
select?
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SChannelStream Valve(Two-stage Trim)
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Example 7Saturated steam @ 450o F
P1 = 225 psia
P2 = 200 psia
Air-to-open, fail-closed
8-inch sch. 40 pipe
Flow = 50,000 lb/hr
Throttling, 316 SS body
Max. P = 210 psi
Line size valve
Which valve style would you
select?
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SMaxFlo Valve(Eccentric Plug)
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Example 8Saturated steam @ 450o F
P1 = 225 psia
P2 = 200 psia
Air-to-open, fail-closed
8-inch sch. 40 pipe
Flow = 50,000 lb/hr
Throttling, 316 SS body
Max. P = 210 psi
Cv required is very small
Which valve style would you
select?
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SMark One-X Expanded Outlet Valve(6x4-inch or 8x4-inch)
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Don’t Forget
MaxFlo, Valdisk 150, and Mark One-X valves can be applied to many valve applications
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So, “Which control valve style is best?”
The choice is yours!
