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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!