説明
Super duplex stainless steel industrial valve
スーパーデュプレックス 2507 フローティングボールバルブ
A severe chloride-service valve material for seawater, オフショア, 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 フローティングボールバルブ?
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, forming, 溶接, 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.
スーパーデュプレックス 2507 Floating Ball Valve specifications
| 製品 | スーパーデュプレックス 2507 フローティングボールバルブ |
|---|---|
| Valve construction | One-, two- or three-piece floating-ball construction; full or reduced bore |
| Nominal material | スーパーデュプレックス 2507 |
| 私たち / 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 そして ASME B16.34; API 6D only when specifically designed and ordered |
| Pressure testing | API 598 or project-specified shell and closure testing |
| 圧力定格 | ASME Class or PN rating verified against exact material, サイズ, construction and design temperature |
| End connections | RF/RTJ flanged, ねじ切りされた, socket-weld or butt-weld according to design |
| Operation | Lever, gearbox, pneumatic or electric actuator |
| ドキュメント | 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, 圧力クラス, material form, trim, seat system, operator, quantity and required code edition.
スーパーデュプレックス 2507 material selection
| 選定のポイント | Engineering guidance |
|---|---|
| Material profile | a highly alloyed ferritic-austenitic stainless steel with high strength and strong resistance to chloride pitting, crevice corrosion and stress-corrosion cracking |
| Why it is selected | High strength and high resistance to localized chloride corrosion when correctly manufactured and specified. |
| 代表的なサービス | Seawater injection, 脱塩, オフショアのトップサイド, 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, 腐食, 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
圧力-温度, 材料, デザイン, 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, oxygen, cryogenic, chlorine and PED requirements apply only when explicitly defined and supported for the exact offered configuration.
代表的な用途
| 業界 | Material service context | Valve selection focus |
|---|---|---|
| 海洋石油とガス | Seawater injection, firewater and chloride-rich process systems | Seat compatibility, differential pressure, cavity relief, torque and fire-safe/emissions requirements |
| Desalination | High-chloride feed, brine and reverse-osmosis support systems | Seat compatibility, differential pressure, cavity relief, torque and fire-safe/emissions requirements |
| 化学処理 | Aggressive chloride and acidic streams after compatibility review | Seat compatibility, differential pressure, cavity relief, torque and fire-safe/emissions requirements |
| 海洋工学 | 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, 汚染物質, プレッシャー, 温度, 速度, サイクリング, emissions and regulatory requirements.
品質, 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, 腐食, impact and NDE requirements.
API 598 or project-specified shell and closure testing, with acceptance and leakage criteria stated on the order.
GA drawing, 寸法, マーキング, operation, pressure test and specified NDE/third-party records.
見積依頼チェックリスト
- 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, 集中, contaminants and solids
- Design and operating pressure/temperature
- PMI, corrosion testing, 臨死体験, witnessing and document requirements
よくある質問
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. It also requires tighter fabrication and heat-treatment control.
は 2507 automatically suitable for all seawater service?
いいえ. 温度, chlorination, 隙間, 預金, 流れ, galvanic couples and cathodic protection affect performance. The complete system must be reviewed.
What documentation should be requested?
Common requirements include EN 10204 3.1 records, PMI, 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, プレッシャー, torque, seat-load control or pipeline-service requirements increase.
Can Super Duplex 2507 be used for every component in this floating ball valve?
Not automatically. 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 ボールバルブ.
Request a Super Duplex 2507 Floating Ball Valve quotation
Send the valve specification, exact material grades, サイズ, 圧力クラス, operating conditions, 技術審査のための数量と検査要件.
