Keterangan
Nickel-iron-chromium alloy industrial valve
Paduan 20 Katup Bola Mengambang
A chemical-process valve material associated with sulfuric-acid, pickling and fertilizer duties. The floating ball valve configuration is engineered for fast on-off isolation in process and utility piping.
Apa itu Paduan 20 Katup Bola Mengambang?
Sebuah Paduan 20 Floating Ball Valve combines a nickel-iron-chromium alloy containing copper and molybdenum, developed for resistance in sulfuric-acid and related chemical environments with a compact quarter-turn isolation design in which line pressure loads the floating ball against the downstream seat.
Paduan 20 selection must use concentration-temperature corrosion data and account for contaminants, aerasi, velocity and crevices. Floating-ball suitability depends on size, differential pressure, seat load, operating torque and cavity-pressure behavior.
Paduan 20 Floating Ball Valve specifications
| Produk | Paduan 20 Katup Bola Mengambang |
|---|---|
| Konstruksi katup | One-, two- or three-piece floating-ball construction; full or reduced bore |
| 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 608, ISO 17292 Dan ASME B16.34; API 6D only when specifically designed and ordered |
| Pengujian tekanan | API 598 atau pengujian shell dan penutupan yang ditentukan proyek |
| Peringkat tekanan | Peringkat Kelas ASME atau PN diverifikasi berdasarkan materi yang tepat, ukuran, suhu konstruksi dan desain |
| Akhiri koneksi | RF/RTJ flanged, berulir, socket-weld or butt-weld according to design |
| Operasi | Lever, kotak roda gigi, aktuator pneumatik atau listrik |
| 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. |
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
Tekanan-suhu, bahan, desain, 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, sedang mengemas, anti-static device, blowout-resistant stem, cavity relief and actuator torque must be selected together.
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 | Seat compatibility, differential pressure, cavity relief, torque and fire-safe/emissions requirements |
| Pupuk | Acid and chemical handling systems after compatibility review | Seat compatibility, differential pressure, cavity relief, torque and fire-safe/emissions requirements |
| Pickling | Selected acid circulation and transfer duties | Seat compatibility, differential pressure, cavity relief, torque and fire-safe/emissions requirements |
| Pharmaceutical and fine chemical | Corrosive reagent and batch-process systems | Seat compatibility, differential pressure, cavity relief, torque and fire-safe/emissions requirements |
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 atau pengujian shell dan penutupan yang ditentukan proyek, 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
- Full or reduced bore, seat material, cavity relief, anti-static/fire-safe and actuator requirements
- 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.
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, tekanan, torque, seat-load control or pipeline-service requirements increase.
Bisa Paduan 20 be used for every component in this floating ball 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 ball valves guide atau telusuri semuanya Katup Bola.
Request a Alloy 20 Floating Ball Valve quotation
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