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  1. KAKUDAI MFG Needle Valve
    KAKUDAI MFG Needle Valve
    Mulai

    Rp189.900

    0 Ulasan
  2. Shinko (Fittings) Air Bleed Valve Amf Type
    Shinko (Fittings) Air Bleed Valve Amf Type
    Mulai

    Rp209.900

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  3. Kitz Brass Needle Valve (20K)
    Kitz Brass Needle Valve (20K)
    Mulai

    Rp569.900

    0 Ulasan
  4. Shinko (Fittings) Female Hose Nipple MH Type
    Shinko (Fittings) Female Hose Nipple MH Type
    Mulai

    Rp86.900

    0 Ulasan
  5. Kitz Stainless Steel Needle Valve (30K)
    Kitz Stainless Steel Needle Valve (30K)
    Mulai

    Rp2.299.900

    0 Ulasan
  6. Shinko (Fittings) Intermediate hose joint UHJ type
    Shinko (Fittings) Intermediate hose joint UHJ type
    Mulai

    Rp119.900

    0 Ulasan
  7. YUKEN Needle Valve GCT-02 Type (Katup Jarum)
    YUKEN Needle Valve GCT-02 Type (Katup Jarum)
    Mulai

    Rp489.900

    0 Ulasan
  8. Onda Needle Valve (Stop Kran)
    Onda Needle Valve (Stop Kran)
    Mulai

    Rp129.900

    0 Ulasan
  9. Parker Plumbing Needle Valves
    Parker Plumbing Needle Valves
    Mulai

    Rp179.900

    0 Ulasan
  10. Kitz Brass Pressure Gauge Valve
    Kitz Brass Pressure Gauge Valve
    Mulai

    Rp299.900

    0 Ulasan
  11. Fuji Special Brass Pipe Fitting Needle Type Miniature Valve Amf Air Vent
    Fuji Special Brass Pipe Fitting Needle Type Miniature Valve Amf Air Vent
    Mulai

    Rp219.900

    0 Ulasan
  12. Kitz Brass Needle Valve (10K)
    Kitz Brass Needle Valve (10K)
    Mulai

    Rp269.900

    0 Ulasan
  13. Kitz Gauge Valve for Pressure Gauge (Needle Valve)
    Kitz Gauge Valve for Pressure Gauge (Needle Valve)
    Mulai

    Rp629.900

    0 Ulasan
  14. Kitz Brass Needle Valve (20K)
    Kitz Brass Needle Valve (20K)
    Mulai

    Rp569.900

    0 Ulasan
  15. Wipro Needle Valve
    Wipro Needle Valve
    Mulai

    Rp73.900

    0 Ulasan
  16. KAKUDAI MFG Angle Type Needle Valve
    KAKUDAI MFG Angle Type Needle Valve
    Mulai

    Rp239.900

    0 Ulasan
  17. Kitz Stainless Steel Needle Valve (260 K)
    Kitz Stainless Steel Needle Valve (260 K)
    Mulai

    Rp3.199.900

    0 Ulasan
  18. Shinko (Fittings) Miniature valve MHC type for horizontal hose
    Shinko (Fittings) Miniature valve MHC type for horizontal hose
    Mulai

    Rp499.900

    0 Ulasan
  19. Shinko (Fittings) Hose Joint HJ Type
    Shinko (Fittings) Hose Joint HJ Type
    Mulai

    Rp57.900

    0 Ulasan
  20. HUDSON VALVE Self Contained Float Valves
    HUDSON VALVE Self Contained Float Valves
    Mulai

    Rp1.099.900

    0 Ulasan
  21. Hayward Plumbing Needle Valves
    Hayward Plumbing Needle Valves
    Mulai

    Rp3.399.900

    0 Ulasan
  22. WINTERS Plumbing Needle Valves
    WINTERS Plumbing Needle Valves
    Mulai

    Rp359.900

    0 Ulasan
  23. Hayward Plumbing Needle Valve
    Hayward Plumbing Needle Valve
    Mulai

    Rp3.599.900

    0 Ulasan
  24. SMC Fluoropolymer Needle Valve LVN20 Series
    SMC Fluoropolymer Needle Valve LVN20 Series
    Mulai

    Rp2.499.900

    0 Ulasan
  25. Kitz 20K Brass Needle Valve (Angle Type)
    Kitz 20K Brass Needle Valve (Angle Type)
    Mulai

    Rp569.900

    0 Ulasan
  26. Kitz Stainless Steel Needle Valve (30K)
    Kitz Stainless Steel Needle Valve (30K)
    Mulai

    Rp1.499.900

    0 Ulasan
  27. HANSEN Plumbing Needle Valves
    HANSEN Plumbing Needle Valves
    Mulai

    Rp379.900

    0 Ulasan
  28. Kitz Stainless Steel Needle Valve (260 K)
    Kitz Stainless Steel Needle Valve (260 K)
    Mulai

    Rp2.299.900

    0 Ulasan
  29. HONEYWELL Needle Valve
    HONEYWELL Needle Valve
    Mulai

    Rp2.099.900

    0 Ulasan
  30. EATON WEATHERHEAD Plumbing Needle Valves
    EATON WEATHERHEAD Plumbing Needle Valves
    Mulai

    Rp359.900

    0 Ulasan
  31. Shinko (Fittings) Miniature valve MHF type for vertical hose
    Shinko (Fittings) Miniature valve MHF type for vertical hose
    Mulai

    Rp499.900

    0 Ulasan
  32. Yamato Valve Needle A Cock For Pressure Gauge Yamato 20K
    Yamato Valve Needle A Cock For Pressure Gauge Yamato 20K
    Mulai

    Rp2.199.900

    0 Ulasan
  33. GF PIPING SYSTEMS Plumbing Needle Valves
    GF PIPING SYSTEMS Plumbing Needle Valves
    Mulai

    Rp7.399.900

    0 Ulasan
  34. Kitz Gauge Valve for Pressure Gauge (Needle Valve)
    Kitz Gauge Valve for Pressure Gauge (Needle Valve)
    Mulai

    Rp559.900

    0 Ulasan
  35. Shinko (Fittings) Biting Sleeve WB Type
    Shinko (Fittings) Biting Sleeve WB Type
    Mulai

    Rp15.900

    0 Ulasan
  36. WEATHERHEAD Plumbing Needle Valves
    WEATHERHEAD Plumbing Needle Valves
    Mulai

    Rp499.900

    0 Ulasan
  37. Shinko (Fittings) Intermediate Hose Nipple UHN Type
    Shinko (Fittings) Intermediate Hose Nipple UHN Type
    Mulai

    Rp86.900

    0 Ulasan
  38. DIXON VALVE COUPLING Plumbing Needle Valve
    DIXON VALVE COUPLING Plumbing Needle Valve
    Mulai

    Rp1.599.900

    0 Ulasan
  39. Shinko (Fittings) Miniature valve MHU type for horizontal hose
    Shinko (Fittings) Miniature valve MHU type for horizontal hose
    Mulai

    Rp529.900

    0 Ulasan
  40. SMC Fluoropolymer Needle Valve LVN30 Series
    SMC Fluoropolymer Needle Valve LVN30 Series
    Mulai

    Rp3.599.900

    0 Ulasan
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Halaman Terkait

  1. reducing valve
  2. kitz valve
  3. valve kitz
  4. pressure reducer valve

Pertanyaan Tentang Needle Valve


Mengapa needle valve lebih presisi untuk throttling (kontrol aliran) dibanding ball valve?

Needle valve memiliki tapered stem (batang tirus) yang memungkinkan penambahan laju aliran (flow rate) secara linear dan sangat halus. Ball valve adalah unit on/off, throttling ball valve akan merusak seat (dudukan) akibat erosi.

Bagaimana rating tekanan (PSI/Bar) mempengaruhi pemilihan needle valve untuk sistem hidrolik?

Rating tekanan valve (misal: 6000 PSI, 10000 PSI) wajib melebihi MAWP (Maximum Allowable Working Pressure) sistem. Untuk tekanan ekstrem, bodi forged (tempa) lebih superior dibanding bodi cast (cor) karena integritas materialnya.


Produk Needle Valve (Klep Jarum) Berkualitas


1. Berdasarkan Desain Bodi (Body Design)

Inline / Straight Pattern (Pola Lurus): Desain paling umum. Inlet dan outlet berada dalam satu garis lurus (180°), seperti bodi Globe Valve kecil.


  • Angle Pattern (Pola Sudut): Inlet dan outlet berada pada sudut 90°. Desain ini menawarkan restriksi aliran sedikit lebih rendah dan sering digunakan sebagai gauge cock (katup instrumentasi).


2. Berdasarkan Konstruksi Bonnet (Bonnet Design)

Bonnet adalah komponen penutup bodi utama, menahan rakitan stem dan packing (penyekat).


  • Integral Bonnet: Bodi dan bonnet menyatu (satu bagian). Desain paling ringkas dan bebas kebocoran (dari sambungan bodi-bonnet), namun tidak dapat diperbaiki (non-serviceable). Ideal untuk rating tekanan sedang-rendah.
  • Union Bonnet (Bonnet Ulir/Gabungan): Bonnet terpasang ke bodi menggunakan mur besar (union nut). Desain ini memungkinkan maintenance (perawatan) packing atau stem tanpa melepas valve dari jalur pipa. Standar untuk penggunaan industrial.


3. Berdasarkan Profil Ujung Stem (Stem Tip Profile)

Bentuk "jarum" menentukan karakteristik aliran (flow curve).


  • Tapered (Meruncing Standar): Paling umum, memberikan kontrol linear baik.
  • V-Notch atau Regulating Stem: Memiliki groove (alur) V presisi. Memberikan karakteristik aliran equal percentage (persentase setara) dan kontrol paling presisi pada flow rate sangat rendah.


Tips Memilih Needle Valve


  • Koefisien Aliran (Flow Coefficient - Cv) Cv adalah metrik standar industri untuk kapasitas aliran valve. Needle Valve dirancang untuk memiliki Cv sangat rendah (misal, Cv 0.05 hingga hingga 1.5). Cv rendah menandakan kemampuan fine control tinggi, namun membatasi rangeability (rentang kontrol) dalam kisaran sempit.

  • Material Konstruksi (Body dan Packing)
    • Body: Harus kompatibel secara kimia dengan media (fluida).
      • Brass (Kuningan): Standar untuk pneumatik (udara), air, dan oli hidraulik standar.
      • Stainless Steel (316/316L): Standar untuk kimia yang bersifat korosif, fluida proses, high-purity gas (gas murni), dan penggunaan high-pressure (tekanan tinggi).

    • Packing (Penyekat Stem): Mencegah kebocoran di sepanjang stem.
      • PTFE (Teflon): Standar industri, resistansi kimia sangat baik, friksi rendah.
      • Graphite: Digunakan untuk servis suhu tinggi (misal, steam) di mana PTFE akan gagal.



  • Rating Tekanan (Pressure Rating) Needle Valve sering digunakan dalam sistem tekanan ekstrem. Penting untuk membedakan rating standar (misal, 600 PSI WOG - Water Oil Gas) dari rating instrumentasi (3.000, 6.000, atau 10.000 PSI).

  • Tipe Sambungan (End Connection)
    • Threaded (Ulir): Paling umum, biasanya NPT (National Pipe Taper) atau BSPT.
    • Compression Fitting (Tube Fitting): Standar emas untuk instrumentasi (seperti brand Swagelok, Parker). Memungkinkan koneksi ke stainless steel tubing bertekanan tinggi tanpa pengelasan atau sealant.


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