DN25 PN63 Close-die Forging Steel Globe Valve

Penerangan

TECHNICAL DATA SHEET: PN63  MOD-FORGED STEEL GLOBE VALVE

1. GENERAL SPECIFICATION

• Jenis Injap: Bolted Bonnet Globe Valve, Outside Screw & Yoke (OS&Y), Rising Stem
• Operasi: Handwheel (Standard), Gear Operator (Optional), Electric/Pneumatic Actuator (Optional)
• Arah Aliran: Flow Under Plug (Standard, as per API 602/ASME B16.34)
• Design Code: API 602 / ASME B16.34
• Bersemuka: ASME B16.10
• Inspection & Testing: API 598 / Shell MESC SPE 77/300

2. PRESSURE & TEMPERATURE RATINGS

• Kelas Tekanan: ASME 300 LB (PN 50 Equivalent)
• Max. Working Pressure (MWP): Per ASME B16.34 for Group 1.1 Materials
• Julat Suhu:
• 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)
• Batang: 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).
• Gasket: 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
• Pembungkusan: 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:
• Standard: 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. CIRI-CIRI REKA BENTUK

• Bonnet Joint: Bolted Bonnet (Standard). Welded Bonnet (Optional for severe service).
• Reka bentuk batang: 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).
• Kelas Kebocoran: 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.
• Pembungkusan: 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)

JAMINAN

SAVVY VALVES komited untuk menyampaikan kualiti produk yang luar biasa dan perkhidmatan selepas jualan tanpa bimbang. Injap kami dijamin memberikan hayat perkhidmatan minimum selama 12 bulan, di mana kami akan membekalkan semua alat ganti yang diperlukan dan arahan penyelenggaraan terperinci secara percuma. Dalam tempoh jaminan, jika sebarang kerosakan bukan disebabkan oleh manusia berlaku, kami akan menggantikan komponen tanpa kos dan menyediakan sokongan teknikal profesional. Selepas jaminan tamat, pelanggan hanya perlu membayar kos alat ganti, sementara masih mendapat manfaat daripada perkhidmatan penyelenggaraan berdiskaun. Matlamat kami adalah untuk membantu pelanggan mengurangkan kos operasi dan meningkatkan kecekapan pengeluaran melalui kualiti yang boleh dipercayai dan sokongan selepas jualan yang komprehensif. Sama ada untuk pertanyaan teknikal atau keperluan penyelenggaraan, pasukan pakar kami akan bertindak balas dengan segera untuk memastikan sistem injap anda mengekalkan prestasi optimum pada setiap masa.