DN25 PN63 Close-die Forging Steel Globe Valve

وصف

TECHNICAL DATA SHEET: PN63  MOD-FORGED STEEL GLOBE VALVE

1. GENERAL SPECIFICATION

• نوع الصمام: Bolted Bonnet Globe Valve, Outside Screw & Yoke (OS&Y), Rising Stem
• عملية: Handwheel (Standard), Gear Operator (Optional), Electric/Pneumatic Actuator (Optional)
• اتجاه التدفق: Flow Under Plug (Standard, as per API 602/ASME B16.34)
• Design Code: API 602 / ASME B16.34
• وجها لوجه: ASME B16.10
• Inspection & Testing: API 598 / Shell MESC SPE 77/300

2. PRESSURE & TEMPERATURE RATINGS

• فئة الضغط: ASME 300 LB (PN 50 Equivalent)
• Max. Working Pressure (MWP): Per ASME B16.34 for Group 1.1 Materials
• نطاق درجة الحرارة:
• Min. Temp: -29°C (-20°F) (Standard)
• Max. Temp: +425°C (+800°F) (For A105, limited by seat material)
• Pressure-Temperature Ratings: As per ASME B16.34 Tables for A105 Material.

3. MATERIAL SPECIFICATION (PER ASTM STANDARDS)

• Body & Bonnet: Carbon Steel, ASTM A105 (Forged)
• ينبع: Stainless Steel, ASTM A182 F6a (13Cr) or F316, with Hardened Surface
• Disc (Plug): ASTM A105 + Hardfaced Sealing Surface: Stellite 6 (AWS ERCoCr-A) applied by overlay welding. (Minimum 1.5mm thickness after machining).
• Seat Ring: ASTM A105 + Hardfaced Sealing Surface: Stellite 6 (AWS ERCoCr-A) applied by overlay welding. (Integral or welded-in).
• الحشية: Spiral Wound Gasket, Stainless Steel (SS316) Filler + Flexible Graphite Filler, SS316 Inner/Outer Ring. (Alternative: Ring Type Joint (RTJ) per ASME B16.20).
• Bolting: ASTM A193 B7 Studs / ASTM A194 2H Nuts
• التعبئة والتغليف: Flexible Graphite (Standard), PTFE or Graphite/PTFE Composite (Optional for lower temps)
• Packing Box: Live-loaded packing gland (Standard) for reliable sealing.
• Yoke: ASTM A216 WCB (Cast) or A105 (Forged)
• Handwheel: Ductile Iron (ASTM A536) or Carbon Steel (AISI 1018)

4. CONNECTIONS & SEALING

• End Connections:
• معيار: Raised Face (RF) Flange per ASME B16.5 Class 800.
• Alternative: Ring Type Joint (RTJ) Flange per ASME B16.5 Class 800.
• Face Finish: ASME B16.5 RF Finish (125-250 µin Ra)
• Body-Bonnet Sealing: Spiral Wound Gasket (as above) or RTJ (if specified).

5. STELLITE SEALING (CRITICAL FEATURE)

• Sealing Surfaces: Both Disc (Plug) and Seat Ring mating surfaces.
• Material: Stellite 6 (Cobalt-Chromium-Tungsten-Carbon Alloy, ASTM F75 equivalent).
• Application Method: Plasma Transferred Arc (PTA) or TIG Overlay Welding.
• Thickness: Minimum 1.5mm (0.060″) after final machining.
• Hardness: Approx. 40-45 HRC.
• Benefits: Excellent galling resistance, high erosion resistance, good high-temperature strength, superior corrosion resistance compared to base A105.

6. ميزات التصميم

• Bonnet Joint: Bolted Bonnet (Standard). Welded Bonnet (Optional for severe service).
• تصميم الجذع: Rising Stem, Non-Rotating. Backseat Feature (API 602 Requirement).
• Stem Sealing: Multiple rings of flexible graphite packing, gland follower, live-loading springs.
• Stem Nut: Bronze or CuNi alloy (self-lubricating).
• فئة التسرب: Class IV (Metal Seat) per API 598 (Standard). Class V or VI achievable with lapping (Consult Factory).
• Fire Safe Design: API 607 / API 6FA compliant packing & secondary metal seals (Optional).

7. TESTING (PER API 598)

• Shell Test: 1.5 x Class Rating Pressure (1200 PSI) with water.
• Seat Test: 1.1 x Class Rating Pressure (880 PSI) with air or water (both directions for globe valve).
• Backseat Test: 1.1 x Class Rating Pressure (880 PSI) with air or water.
• High Pressure Gas Test (Optional): Per customer specification.
• Documentation: Certified Test Reports (CTRs) available.

8. MARKING & IDENTIFICATION

• Marked per MSS SP-25 / ASME B16.34. Includes:
• Manufacturer Name or Trademark
• Pressure Class (800)
• Material Designation (A105)
• Size (e.g., 2″ NPS)
• Heat Number (Body/Bonnet)
• “OS&Y” or “RS”
• Unique Serial Number (Traceable)
• Direction of Flow Arrow
• “Stellite Trim” (or Trim Code per API 600/602)
• Tag: Stainless Steel tag with key data.

9. PAINTING & PACKING

• External Surface Preparation: Blast cleaned to Sa 2½ (ISO 8501-1).
• Primer: High-quality epoxy primer.
• Finish Coat: Epoxy paint, RAL 7012 (Standard Grey) or customer-specified color.
• End Protection: Plastic or Metal Caps/Blinds suitable for Class 800 pressure.
• التعبئة والتغليف: Wooden crate or export-quality plywood case suitable for marine transport.

10. OPTIONS

• Gear Operator (Bevel or Worm Gear)
• Electric / Pneumatic / Hydraulic Actuators
• Extended Bonnet/Body for Cold Box or Insulation
• Cryogenic Service Design (-196°C / -320°F)
• Bellows Seal Stem
• Position Indicators (Mechanical/Electric)
• Locking Device
• Special Painting (e.g., Offshore, High Temp)
• NACE MR0175/ISO 15156 Compliance (H2S Service)
• Fugitive Emission Certification (ISO 15848-1, TA-Luft, SHELL SPE 77/312)

ضمان

تلتزم شركة سافي فالفز بتقديم منتجات عالية الجودة وخدمة ما بعد البيع مريحة. نضمن لصماماتنا عمر خدمة لا يقل عن ١٢ شهرًا، نوفر خلالها جميع قطع الغيار اللازمة وتعليمات الصيانة المفصلة مجانًا. خلال فترة الضمان، في حال حدوث أي ضرر غير بشري، نستبدل المكونات مجانًا ونقدم دعمًا فنيًا احترافيًا. بعد انتهاء الضمان، يدفع العميل فقط تكلفة قطع الغيار، مع الاستفادة من خدمات الصيانة المخفضة. هدفنا هو مساعدة عملائنا على خفض تكاليف التشغيل وتحسين كفاءة الإنتاج من خلال جودة موثوقة ودعم شامل لما بعد البيع. سواءً للاستفسارات الفنية أو احتياجات الصيانة، سيستجيب فريق خبرائنا على الفور لضمان الحفاظ على الأداء الأمثل لنظام صماماتك في جميع الأوقات.