คำอธิบาย
Molybdenum-bearing austenitic stainless steel industrial valve
316 วาล์วปีกผีเสื้อออฟเซ็ตสแตนเลสสามชั้น
A widely specified corrosion-resistant valve material for chemical, pharmaceutical, water and general process systems. The triple offset butterfly valve configuration is engineered for compact high-temperature or severe-service process isolation.
What is a 316 วาล์วปีกผีเสื้อออฟเซ็ตสแตนเลสสามชั้น?
ก 316 Stainless Steel Triple Offset Butterfly Valve combines a molybdenum-bearing chromium-nickel austenitic stainless steel family with improved resistance to localized corrosion compared with 304 in many environments with a quarter-turn metal-seated design using three geometric offsets to reduce seat rubbing and support severe-service isolation.
316 is a common market description; cast valve bodies are generally specified as CF8M or low-carbon CF3M, while forged parts use F316 or F316L. Seat-stack design, pressure direction, leakage class, shaft loading, thermal cycling and actuator torque are configuration-specific.
316 Stainless Steel Triple Offset Butterfly Valve specifications
| ผลิตภัณฑ์ | 316 วาล์วปีกผีเสื้อออฟเซ็ตสแตนเลสสามชั้น |
|---|---|
| Valve construction | Triple-eccentric metal-seated butterfly valve in wafer, lug, double-flanged or butt-weld body pattern |
| Nominal material | 316 สแตนเลส |
| เรา / EN reference | UNS S31600/S31603; EN 1.4401/1.4404 |
| Product forms | Wrought ASTM A182 F316/F316L; cast ASTM A351 CF8M/CF3M; exact component specification stated on order |
| Design standards | API 609 และ ASME B16.34; EN 593 option for applicable European projects |
| Pressure testing | API 598, EN 12266-1 or project-specified shell and seat testing |
| Pressure rating | ASME Class or PN rating verified against exact material, ขนาด, 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 |
| 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.
316 Stainless Steel material selection
| จุดคัดเลือก | Engineering guidance |
|---|---|
| Material profile | a molybdenum-bearing chromium-nickel austenitic stainless steel family with improved resistance to localized corrosion compared with 304 in many environments |
| Why it is selected | Good fabrication, broad availability and improved pitting resistance over 304 in many moderately chloride-bearing services. |
| บริการทั่วไป | การแปรรูปทางเคมี, pharmaceutical, อาหาร, clean utilities and selected chloride-bearing water service. |
| Limitations to check | Warm chlorides, crevices and seawater can exceed 316 capability. Reducing acids and mixed contaminants require service-specific corrosion data. |
| Specification route | Wrought ASTM A182 F316/F316L; cast ASTM A351 CF8M/CF3M; exact component specification stated on order |
| Verification | MTC and heat traceability with PMI for molybdenum verification when ordered; low-carbon grade and solution condition confirmed as required. |
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, 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 |
|---|---|---|
| การแปรรูปทางเคมี | Compatible organic chemicals, solvents and moderate corrosive process streams | Pressure direction, leakage class, metal-seat design, อุณหภูมิ, torque and fire-safe/emissions qualification |
| เภสัชกรรม | Clean process, purified water and hygienic utility systems | Pressure direction, leakage class, metal-seat design, อุณหภูมิ, torque and fire-safe/emissions qualification |
| อาหารและเครื่องดื่ม | Product transfer and cleaning systems within chloride limits | Pressure direction, leakage class, metal-seat design, อุณหภูมิ, torque and fire-safe/emissions qualification |
| การบำบัดน้ำ | Treated water and selected moderate-chloride service after review | Pressure direction, leakage class, metal-seat design, อุณหภูมิ, torque and fire-safe/emissions qualification |
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.
MTC and heat traceability with PMI for molybdenum verification when ordered; low-carbon grade and solution condition confirmed as required.
API 598, EN 12266-1 or project-specified shell and seat 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
- Body pattern, face-to-face, pressure direction, leakage class, seal-ring design and actuation
- 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
What is the cast equivalent commonly used for 316 valve bodies?
ASTM A351 CF8M is commonly associated with cast 316-type chemistry and CF3M with low-carbon 316L-type chemistry. They remain distinct casting grades with their own requirements.
เป็น 316 stainless steel suitable for seawater?
ไม่โดยอัตโนมัติ. Temperature, ออกซิเจน, ความเร็ว, รอยแยก, deposits and residual chlorine can cause localized attack. ดูเพล็กซ์, super duplex or higher-alloy materials are often evaluated for demanding seawater duty.
Why is PMI requested for 316 วาล์ว?
PMI helps distinguish molybdenum-bearing 316-type components from visually similar 304-type material and supports material traceability in alloy-controlled projects.
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?
เลขที่. Some designs have a preferred pressure direction or different leakage capability by direction. Confirm the tested performance of the exact configuration.
สามารถ 316 Stainless Steel be used for every component in this triple offset butterfly 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 316 Stainless Steel valve products
Need a broader comparison? View the general stainless steel and alloy butterfly valves guide or browse all วาล์วปีกผีเสื้อ.
ขอ 316 Stainless Steel Triple Offset Butterfly Valve quotation
Send the valve specification, exact material grades, ขนาด, ระดับความดัน, operating conditions, ข้อกำหนดด้านปริมาณและการตรวจสอบสำหรับการทบทวนทางเทคนิค.
