คำอธิบาย
Super duplex stainless steel industrial valve
ซุปเปอร์ดูเพล็กซ์ 2507 บอลวาล์วลอยตัว
A severe chloride-service valve material for seawater, นอกชายฝั่ง, desalination and aggressive process systems. The floating ball valve configuration is engineered for fast on-off isolation in process and utility piping.
What is a Super Duplex 2507 บอลวาล์วลอยตัว?
A Super Duplex 2507 Floating Ball Valve combines a highly alloyed ferritic-austenitic stainless steel with high strength and strong resistance to chloride pitting, crevice corrosion and stress-corrosion cracking with a compact quarter-turn isolation design in which line pressure loads the floating ball against the downstream seat.
2507 requires disciplined material procurement, การขึ้นรูป, welding, heat treatment and testing to preserve phase balance and corrosion performance. Floating-ball suitability depends on size, differential pressure, seat load, operating torque and cavity-pressure behavior.
ซุปเปอร์ดูเพล็กซ์ 2507 Floating Ball Valve specifications
| ผลิตภัณฑ์ | ซุปเปอร์ดูเพล็กซ์ 2507 บอลวาล์วลอยตัว |
|---|---|
| Valve construction | One-, two- or three-piece floating-ball construction; full or reduced bore |
| Nominal material | ซุปเปอร์ดูเพล็กซ์ 2507 |
| เรา / EN reference | UNS S32750; EN 1.4410 |
| Product forms | Wrought ASTM A182 F53; project-approved ASTM A995/A890 cast grade selected by chemistry and properties; exact component specification required |
| Design standards | API 608, ISO 17292 และ ASME B16.34; API 6D only when specifically designed and ordered |
| การทดสอบแรงดัน | API 598 or project-specified shell and closure testing |
| Pressure rating | ASME Class or PN rating verified against exact material, ขนาด, construction and design temperature |
| End connections | RF/RTJ flanged, เกลียว, socket-weld or butt-weld according to design |
| Operation | Lever, gearbox, pneumatic or electric actuator |
| เอกสารประกอบ | EN 10204 3.1 material records, pressure test report, GA drawing and project inspection records as ordered |
This is an engineered inquiry product, not a universal stock specification. Final availability depends on valve size, ระดับความดัน, material form, trim, seat system, operator, quantity and required code edition.
ซุปเปอร์ดูเพล็กซ์ 2507 material selection
| จุดคัดเลือก | Engineering guidance |
|---|---|
| Material profile | a highly alloyed ferritic-austenitic stainless steel with high strength and strong resistance to chloride pitting, การกัดกร่อนของรอยแยกและการแตกร้าวจากการกัดกร่อนจากความเค้น |
| Why it is selected | High strength and high resistance to localized chloride corrosion when correctly manufactured and specified. |
| บริการทั่วไป | การฉีดน้ำทะเล, การแยกเกลือออกจากน้ำ, ท็อปไซด์นอกชายฝั่ง, brine and aggressive chloride-bearing process systems. |
| Limitations to check | Upper and lower service-temperature limits, hydrogen exposure, galvanic coupling and intermetallic precipitation require engineering review. |
| Specification route | Wrought ASTM A182 F53; project-approved ASTM A995/A890 cast grade selected by chemistry and properties; exact component specification required |
| Verification | 100 percent PMI where ordered, MTC and heat treatment review, ferrite testing plus specified ASTM A923, การกัดกร่อน, impact and NDE requirements. |
Floating Ball Valve design and standards
API 608 / ISO 17292
Common design bases for industrial metal ball valves; exact scope and edition must be stated.
ASME B16.34
ความดัน-อุณหภูมิ, วัสดุ, ออกแบบ, examination, testing and marking requirements within scope.
API 598
Common shell and closure pressure-testing basis when specified.
API 607 / API 6FA
Fire-test qualification applies only to the exact offered seat, seal and valve configuration.
Seat polymer or metal, ball/stem alloy, packing, anti-static device, blowout-resistant stem, cavity relief and actuator torque must be selected together.
Fire-safe, fugitive-emission, sour-service, ออกซิเจน, cryogenic, chlorine and PED requirements apply only when explicitly defined and supported for the exact offered configuration.
การใช้งานทั่วไป
| อุตสาหกรรม | Material service context | Valve selection focus |
|---|---|---|
| น้ำมันและก๊าซนอกชายฝั่ง | การฉีดน้ำทะเล, firewater and chloride-rich process systems | Seat compatibility, differential pressure, cavity relief, torque and fire-safe/emissions requirements |
| การแยกเกลือออกจากน้ำ | High-chloride feed, brine and reverse-osmosis support systems | Seat compatibility, differential pressure, cavity relief, torque and fire-safe/emissions requirements |
| การแปรรูปทางเคมี | Aggressive chloride and acidic streams after compatibility review | Seat compatibility, differential pressure, cavity relief, torque and fire-safe/emissions requirements |
| วิศวกรรมทางทะเล | Seawater cooling and critical marine utility systems | Seat compatibility, differential pressure, cavity relief, torque and fire-safe/emissions requirements |
Application examples are not a corrosion or design approval. The end user must verify process chemistry, สารปนเปื้อน, ความดัน, อุณหภูมิ, ความเร็ว, การปั่นจักรยาน, emissions and regulatory requirements.
คุณภาพ, testing and traceability
Heat-number traceability and EN 10204 3.1 records matched to the ordered component specifications.
100 percent PMI where ordered, MTC and heat treatment review, ferrite testing plus specified ASTM A923, การกัดกร่อน, impact and NDE requirements.
API 598 or project-specified shell and closure testing, with acceptance and leakage criteria stated on the order.
GA drawing, ขนาด, การทำเครื่องหมาย, operation, pressure test and specified NDE/third-party records.
รายการตรวจสอบ RFQ
- Valve design standard and required edition
- Nominal size and ASME Class or PN rating
- Exact material specifications for pressure boundary, trim, seats, packing and bolting
- Full or reduced bore, seat material, cavity relief, anti-static/fire-safe and actuator requirements
- End connection, facing and face-to-face requirement
- Fluid composition, ความเข้มข้น, contaminants and solids
- Design and operating pressure/temperature
- พีเอ็มไอ, การทดสอบการกัดกร่อน, ใกล้ใกล้ตาย, witnessing and document requirements
คำถามที่พบบ่อย
How is super duplex 2507 different from duplex 2205?
2507 contains higher chromium, molybdenum and nitrogen and generally offers greater strength and localized-corrosion resistance. นอกจากนี้ยังต้องมีการผลิตที่เข้มงวดและการควบคุมการให้ความร้อนอีกด้วย.
เป็น 2507 automatically suitable for all seawater service?
เลขที่. Temperature, คลอรีน, รอยแยก, เงินฝาก, ไหล, galvanic couples and cathodic protection affect performance. The complete system must be reviewed.
What documentation should be requested?
ข้อกำหนดทั่วไปได้แก่ EN 10204 3.1 records, พีเอ็มไอ, heat-treatment evidence, ferrite results and specified corrosion, impact and NDE reports.
How does a floating ball valve achieve shutoff?
Line pressure moves the ball slightly toward the downstream seat, producing pressure-assisted sealing. Seat material and geometry control leakage and operating torque.
When should a trunnion-mounted design be considered?
Trunnion mounting is commonly evaluated as size, ความดัน, torque, seat-load control or pipeline-service requirements increase.
Can Super Duplex 2507 be used for every component in this floating ball valve?
ไม่โดยอัตโนมัติ. Pressure-boundary, trim, stem or shaft, seating, packing, gasket and bolting materials have different mechanical and corrosion duties. The complete bill of materials must be engineered for the service.
Related Super Duplex 2507 valve products
Need a broader comparison? View the general stainless steel and alloy ball valves guide or browse all บอลวาล์ว.
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