Keterangan
Nickel-iron-chromium alloy industrial valve
Paduan 20 Katup Kupu-Kupu Offset Tiga
A chemical-process valve material associated with sulfuric-acid, pickling and fertilizer duties. The triple offset butterfly valve configuration is engineered for compact high-temperature or severe-service process isolation.
Apa itu Paduan 20 Katup Kupu-Kupu Offset Tiga?
Sebuah Paduan 20 Triple Offset Butterfly Valve combines a nickel-iron-chromium alloy containing copper and molybdenum, developed for resistance in sulfuric-acid and related chemical environments with a quarter-turn metal-seated design using three geometric offsets to reduce seat rubbing and support severe-service isolation.
Paduan 20 selection must use concentration-temperature corrosion data and account for contaminants, aerasi, velocity and crevices. Seat-stack design, pressure direction, leakage class, shaft loading, thermal cycling and actuator torque are configuration-specific.
Paduan 20 Triple Offset Butterfly Valve specifications
| Produk | Paduan 20 Katup Kupu-Kupu Offset Tiga |
|---|---|
| Konstruksi katup | Triple-eccentric metal-seated butterfly valve in wafer, lug, double-flanged or butt-weld body pattern |
| materi nominal | Paduan 20 |
| KITA / Sebuah referensi | UNS N08020; EN 2.4660 |
| Bentuk produk | Ditempa/ditempa ASTM B462 atau ASTM A182 F20 as applicable; pemeran ASTM A351 CN7M; component specification controlled by design |
| Standar desain | API 609 Dan ASME B16.34; EN 593 option for applicable European projects |
| Pengujian tekanan | API 598, EN 12266-1 or project-specified shell and seat testing |
| Peringkat tekanan | Peringkat Kelas ASME atau PN diverifikasi berdasarkan materi yang tepat, ukuran, suhu konstruksi dan desain |
| Akhiri koneksi | Wafer, lug, double-flanged or butt-weld body patterns according to design |
| Operasi | Gearbox, pneumatic, electric or hydraulic actuator |
| Dokumentasi | EN 10204 3.1 catatan materi, laporan uji tekanan, Gambar GA dan catatan inspeksi proyek sesuai pesanan |
Ini adalah produk penyelidikan yang direkayasa, bukan spesifikasi stok universal. Ketersediaan akhir tergantung pada ukuran katup, kelas tekanan, bentuk materi, memangkas, sistem kursi, operator, kuantitas dan edisi kode yang diperlukan.
Paduan 20 pemilihan bahan
| Titik seleksi | Bimbingan teknik |
|---|---|
| Profil bahan | a nickel-iron-chromium alloy containing copper and molybdenum, developed for resistance in sulfuric-acid and related chemical environments |
| Mengapa dipilih | Useful resistance to sulfuric acid and a range of chemical environments, with fabrication characteristics familiar to stainless-alloy shops. |
| Layanan khas | Sulfuric-acid processing, pupuk, pengawetan, chemical transfer and pharmaceutical process systems. |
| Keterbatasan untuk diperiksa | It is not a universal acid alloy. Hydrochloric acid, oxidizing contaminants and mixed acids can change performance significantly. |
| Spesifikasi rute | Ditempa/ditempa ASTM B462 atau ASTM A182 F20 as applicable; pemeran ASTM A351 CN7M; component specification controlled by design |
| Verifikasi | PMI untuk nikel, kromium, copper and molybdenum plus heat traceability and component-specific MTC review. |
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.
Aman dari kebakaran, emisi buronan, layanan asam, oksigen, kriogenik, Persyaratan klorin dan PED hanya berlaku jika ditentukan secara eksplisit dan didukung untuk konfigurasi yang ditawarkan secara tepat.
Aplikasi yang umum
| Industri | Konteks layanan material | Fokus pemilihan katup |
|---|---|---|
| Sulfuric-acid processing | Transfer, dilution and process systems within verified concentration-temperature limits | Pressure direction, leakage class, metal-seat design, suhu, torque and fire-safe/emissions qualification |
| Pupuk | Acid and chemical handling systems after compatibility review | Pressure direction, leakage class, metal-seat design, suhu, torque and fire-safe/emissions qualification |
| Pickling | Selected acid circulation and transfer duties | Pressure direction, leakage class, metal-seat design, suhu, torque and fire-safe/emissions qualification |
| Pharmaceutical and fine chemical | Corrosive reagent and batch-process systems | Pressure direction, leakage class, metal-seat design, suhu, torque and fire-safe/emissions qualification |
Contoh aplikasi bukan merupakan persetujuan korosi atau desain. Pengguna akhir harus memverifikasi proses kimia, kontaminan, tekanan, suhu, kecepatan, bersepeda, emisi dan persyaratan peraturan.
Kualitas, pengujian dan ketertelusuran
Keterlacakan nomor panas dan EN 10204 3.1 catatan yang cocok dengan spesifikasi komponen yang dipesan.
PMI untuk nikel, kromium, copper and molybdenum plus heat traceability and component-specific MTC review.
API 598, EN 12266-1 or project-specified shell and seat testing, dengan kriteria penerimaan dan kebocoran yang tertera pada pesanan.
menggambar GA, ukuran, menandai, operasi, uji tekanan dan catatan NDE/pihak ketiga yang ditentukan.
Daftar periksa RFQ
- Standar desain katup dan edisi wajib
- Ukuran nominal dan peringkat ASME Class atau PN
- Spesifikasi material yang tepat untuk batas tekanan, memangkas, kursi, pengepakan dan perbautan
- Pola tubuh, face-to-face, pressure direction, leakage class, seal-ring design and actuation
- Akhiri koneksi, kebutuhan yang dihadapi dan tatap muka
- Komposisi cairan, konsentrasi, kontaminan dan padatan
- Desain dan tekanan/suhu pengoperasian
- PMI, pengujian korosi, mati suri, persyaratan saksi dan dokumen
Pertanyaan yang sering diajukan
Why is Alloy 20 used in sulfuric-acid service?
Nikelnya, kromium, molybdenum and copper balance can provide useful resistance across selected sulfuric-acid conditions. Exact concentration, temperature and contaminants remain decisive.
What cast grade is commonly associated with Alloy 20 katup?
ASTM A351 CN7M is a commonly specified cast grade associated with Alloy 20-type service. Forged components use their applicable wrought specification.
Bisa Paduan 20 replace Hastelloy C276?
Not as a blanket substitution. The alloys have different chemistry, strength and corrosion behavior. Selection must follow actual process corrosion data and the piping material specification.
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?
TIDAK. Some designs have a preferred pressure direction or different leakage capability by direction. Confirm the tested performance of the exact configuration.
Bisa Paduan 20 be used for every component in this triple offset butterfly valve?
Tidak secara otomatis. Batas tekanan, memangkas, batang atau poros, tempat duduk, sedang mengemas, bahan paking dan baut memiliki tugas mekanis dan korosi yang berbeda. Bill of material yang lengkap harus direkayasa untuk layanan tersebut.
Related Alloy 20 produk katup
Perlu perbandingan yang lebih luas? Lihat general stainless steel and alloy butterfly valves guide atau telusuri semuanya Katup Kupu-Kupu.
Request a Alloy 20 Triple Offset Butterfly Valve quotation
Kirim spesifikasi katup, nilai materi yang tepat, ukuran, kelas tekanan, kondisi pengoperasian, kuantitas dan persyaratan inspeksi untuk tinjauan teknis.
