説明
Super duplex stainless steel industrial valve
スーパーデュプレックス 2507 トリプルオフセットバタフライバルブ
A severe chloride-service valve material for seawater, オフショア, desalination and aggressive process systems. The triple offset butterfly valve configuration is engineered for compact high-temperature or severe-service process isolation.
What is a Super Duplex 2507 トリプルオフセットバタフライバルブ?
A Super Duplex 2507 Triple Offset Butterfly 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 quarter-turn metal-seated design using three geometric offsets to reduce seat rubbing and support severe-service isolation.
2507 requires disciplined material procurement, forming, 溶接, heat treatment and testing to preserve phase balance and corrosion performance. Seat-stack design, pressure direction, leakage class, shaft loading, thermal cycling and actuator torque are configuration-specific.
スーパーデュプレックス 2507 Triple Offset Butterfly Valve specifications
| 製品 | スーパーデュプレックス 2507 トリプルオフセットバタフライバルブ |
|---|---|
| Valve construction | Triple-eccentric metal-seated butterfly valve in wafer, lug, double-flanged or butt-weld body pattern |
| 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 609 そして ASME B16.34; EN 593 option for applicable European projects |
| Pressure testing | API 598, EN 12266-1 or project-specified shell and seat testing |
| 圧力定格 | ASME Class or PN rating verified against exact material, サイズ, construction and design temperature |
| End connections | Wafer, lug, double-flanged or butt-weld body patterns according to design |
| Operation | Gearbox, pneumatic, electric or hydraulic 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. |
Triple Offset Butterfly Valve design and standards
API 609
Common design basis for butterfly valves; category, body pattern, seat design and edition must be identified.
ASME B16.34
Pressure-temperature and general valve design requirements where applicable.
API 598 / EN 12266-1
Shell and seat testing selected for the applicable project and market.
API 607 / ISO 10497
Fire-safe qualification applies only to the exact seat, seal and valve configuration.
Seal ring, seat stack, pressure direction, shaft/packing system, bearing loads and actuator safety factor must be reviewed as a complete package.
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 | Pressure direction, leakage class, metal-seat design, 温度, torque and fire-safe/emissions qualification |
| Desalination | High-chloride feed, brine and reverse-osmosis support systems | Pressure direction, leakage class, metal-seat design, 温度, torque and fire-safe/emissions qualification |
| 化学処理 | Aggressive chloride and acidic streams after compatibility review | Pressure direction, leakage class, metal-seat design, 温度, torque and fire-safe/emissions qualification |
| 海洋工学 | Seawater cooling and critical marine utility systems | Pressure direction, leakage class, metal-seat design, 温度, torque and fire-safe/emissions qualification |
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, EN 12266-1 or project-specified shell and seat 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
- Body pattern, face-to-face, pressure direction, leakage class, seal-ring design and actuation
- 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.
What are the three offsets?
They separate the shaft from the seat and body centerlines and add a conical sealing geometry, allowing rapid seat disengagement during opening.
Is every triple offset butterfly valve bidirectional?
いいえ. Some designs have a preferred pressure direction or different leakage capability by direction. Confirm the tested performance of the exact configuration.
Can Super Duplex 2507 be used for every component in this triple offset butterfly valve?
自動的ではありません. 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 butterfly valves guide or browse all バタフライバルブ.
Request a Super Duplex 2507 Triple Offset Butterfly 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.
