Valvole a saracinesca
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1. Valve Type: Parallel Slide Gate Valve (Double Disc Non-Wedging)
2. Design Standard: API 600 / ASME B16.34
3. Size: 14 Inch (NPS 14)
4. Pressure Class: ASME Class 1500 (1500 LB)
5. Body & Bonnet Material: ASTM A182 F91 (9Cr-1Mo-V Forged Steel)
6. Bonnet Type: Pressure Seal (Self-Sealing) Bonnet
7. End Connection: Butt Weld (BW) per ASME B16.25
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• Dimensioni: 3″
• Valutazione: 125 libbre
• Materiali: Corpo, cofano e cuneo ASTM A126 GR.B
• Voce 410SS
• Bullone a U in acciaio al carbonio
• Operatore: volantino
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Design & Manufacturing Standards API Specification 6A, NACE MR0175/ISO 15156
Nominal Bore Size 1-13/16″ to 7-1/16″
Pressure Rating (PR) 2,000 PSI to 15,000 PSI
Material Class AA to HH (As per API 6A)
Temperature Class K to U (As per API 6A)
Product Specification Level (PSL) PSL 1, PSL 2, PSL 3
Performance Requirement (PR) PR 1, PR 2
Service Media Crude Oil, Water, Natural Gas, and similar wellbore fluids.
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Product Type Parallel Slide Gate Valve
Operation Handwheel (Standard). Gear Operator, Electric or Pneumatic Actuator (Optional)
Design Standard API 600 / API 6D / ASME B16.34
Face-to-Face ASME B16.10 / API 6D
End Connection Butt-Weld (BW) as per ASME B16.25
Pressure Rating Class 150, 300, 600, 900, 1500, 2500 (As specified)
Application High-Temperature & High-Pressure Services (Power Generation, Petrochemical, Pipeline)
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Product Type Parallel Slide Gate Valve
Operation Handwheel (Standard). Gear Operator, Electric or Pneumatic Actuator (Optional)
Design Standard API 600 / API 6D / ASME B16.34
Face-to-Face ASME B16.10 / API 6D
End Connection Butt-Weld (BW) as per ASME B16.25
Pressure Rating Class 150, 300, 600, 900, 1500, 2500 (As specified)
Application High-Temperature & High-Pressure Services (Power Generation, Petrochemical, Pipeline)
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Design Standard API 602 / ASME B16.34 / BS 5352
Nominal Size 3/4 inch (DN20)
Pressure Class Class 800 LB (PN130)
Structure Type OS&Y (Outside Screw and Yoke), Bolted Bonnet
Connection Type NPT Threaded (ASME B1.20.1) or Socket Weld (ASME B16.11)
Operation Handwheel
Body Material ASTM A182 F316L (Forged Austenitic Stainless Steel)
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• Product: Flanged End, Outside Screw and Yoke (OS&Y), Solid Wedge Gate Valve
• Seat Type: Bronze-to-Bronze Metal Seated (Metal-to-Metal)
• Operation: Bevel Gear Actuator with Handwheel and Mechanical Position Indicator (visual open/close indication)
• Design Standard: BS 5150 / BS 5163 (Metal-seated variant)
• Ends: Flanged to BS 4504 / EN 1092-2
• Face-to-Face: BS 2089 or EN 558-1 Series 3 (short pattern)
• Test Standard: BS 6755 / EN 12266-1
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Valve Type Rising Stem Gate Valve (OS&Y – Outside Screw and Yoke)
Nominal Size 3 inches (3″) / DN80
Pressure Class 125 LB (Class 125)
End Connection Flanged Ends
Flange Standard ASME B16.1 (Class 125 Cast Iron Flange – Raised Face / Flat Face)
Face-to-Face Dimension ASME B16.10 / MSS SP-70
Test Standard API 598 / MSS SP-70
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Nominal Size 14 inches (14″) / DN350
Pressure Class 125 LB (Class 125)
End Connection Flanged Ends
Flange Standard ASME B16.1 Class 125 (Cast Iron Flange, RF/FF)
Face-to-Face Dimension MSS SP-70 / ASME B16.10
Design & Manufacture Standard MSS SP-70
Test & Inspection Standard API 598
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Design Standard API 602 / ASME B16.34 / BS 5352
Nominal Size 1/2 inch (DN15)
Pressure Class Class 800 LB (PN130)
Structure Type OS&Y (Outside Screw and Yoke), Bolted Bonnet
Connection Type NPT Threaded (ASME B1.20.1) or Socket Weld (ASME B16.11)
Operation Handwheel
Body Material ASTM A105N (Forged Carbon Steel, Normalized, suitable for NACE MR0175)
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Size 2 inches (DN 50)
Pressure Class Class 300 LB (PN 50)
Body Material Stainless Steel (ASTM A182 F304 / F316 / F316L)
Manufacturing Process Forged / Cast (depending on manufacturer)
Design Standard API 602 / ASME B16.34
End Connection Standard ASME B16.5 (Flanged RF/RTJ), ASME B16.25 (BW), ASME B16.11 (SW)
Face to Face Standard ASME B16.10
Test & Inspection Std. API 598
Emission Compliance ISO 15848-1 / TA-Luft (optional)
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Nominal Size DN80 – DN600 (as required)
Pressure Rating PN10 / PN16 / PN25 (as required)
End Connection Flanged Ends
Flange Standard DIN EN 1092-2 (Ductile Iron Flanges, Flat/Raised Face)
Face-to-Face Dimension DIN 3202 F4 / DIN EN 558 Series 14
Design & Manufacture Standard DIN3352 (Part 4 / Type F4)
Test & Inspection Standard DIN EN 12266-1
Una valvola a saracinesca è un tipo di valvola utilizzata per interrompere o consentire completamente il flusso in una condotta sollevando o abbassando una barriera solida (la saracinesca) nel percorso del fluido. È progettata principalmente per il controllo on/off piuttosto che per la regolazione del flusso. Quando la valvola è completamente aperta, la saracinesca si solleva completamente, consentendo un flusso senza ostacoli con una caduta di pressione minima. Quando è chiusa, la saracinesca si sigilla ermeticamente per interrompere completamente il flusso. Le valvole a saracinesca sono più efficaci nei sistemi in cui la valvola rimane completamente aperta o completamente chiusa per periodi prolungati. Non sono ideali per scopi di strozzamento perché la saracinesca parzialmente aperta può vibrare, causando usura e potenzialmente danneggiando la valvola. Queste valvole sono ampiamente utilizzate in sistemi di approvvigionamento idrico, oleodotti e gasdotti e applicazioni industriali grazie alla loro struttura robusta e alla capacità di gestire pressioni e temperature elevate. I materiali comuni includono ghisa, acciaio inossidabile e ottone, con opzioni su misura per fluidi e ambienti specifici. Le valvole a saracinesca sono note per la loro durata, la tenuta stagna e la lunga durata, il che le rende la scelta preferita in molte applicazioni gravose.
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