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  1. Osaka Pipe Fitting & Valve Cast iron main part gunmetal foot valve Intermediate foot 10K flange type
    Osaka Pipe Fitting & Valve Cast iron main part gunmetal foot valve Intermediate foot 10K flange type
    Mulai

    Rp7.599.900

    0 Ulasan
  2. Osaka Pipe Fitting & Valve All stainless steel foot valve Intermediate foot 10K flange type
    Osaka Pipe Fitting & Valve All stainless steel foot valve Intermediate foot 10K flange type
    Mulai

    Rp15.999.900

    0 Ulasan
  3. Osaka Pipe Fitting & Valve All cast iron spring type foot valve Intermediate foot Screw type
    Osaka Pipe Fitting & Valve All cast iron spring type foot valve Intermediate foot Screw type
    Mulai

    Rp819.900

    0 Ulasan
  4. Ryuko Sampling Valve uPVC
    Ryuko Sampling Valve uPVC
    Mulai

    Rp90.900

    0 Ulasan
  5. Yoshitake Safety Valve AL-301T Series
    Yoshitake Safety Valve AL-301T Series
    Mulai

    Rp18.999.900

    0 Ulasan
  6. KZ Pressure Reducing Valve
    KZ Pressure Reducing Valve
    Mulai

    Rp9.599.900

    0 Ulasan
  7. Braco Marine Oil Tank Self-Closing Drain Valve F7398 5K
    Braco Marine Oil Tank Self-Closing Drain Valve F7398 5K
    Mulai

    Rp2.399.900

    0 Ulasan
  8. CALEFFI Mixing Valve
    CALEFFI Mixing Valve
    Mulai

    Rp129.999.900

    0 Ulasan
  9. VENN Pilot Ball Tap with Polyethylene Sand
    VENN Pilot Ball Tap with Polyethylene Sand
    Mulai

    Rp2.399.900

    0 Ulasan
  10. Meridian Angle Valve Connector
    Meridian Angle Valve Connector
    Mulai

    Rp209.900

    0 Ulasan
  11. Osaka Pipe Fitting & Valve All cast iron, single-open foot valve, tip foot, screw-in type, without lever
    Osaka Pipe Fitting & Valve All cast iron, single-open foot valve, tip foot, screw-in type, without lever
    Mulai

    Rp1.699.900

    0 Ulasan
  12. Yoshitake Air Bleed Valve (with Check Function) TA-16CVS
    Yoshitake Air Bleed Valve (with Check Function) TA-16CVS
    Mulai

    Rp2.799.900

    0 Ulasan
  13. OATEY Vent Valves
    OATEY Vent Valves
    Mulai

    Rp929.900

    0 Ulasan
  14. CASH VALVE Relief Valve
    CASH VALVE Relief Valve
    Mulai

    Rp6.699.900

    0 Ulasan
  15. HANSEN Plug Valves
    HANSEN Plug Valves
    Mulai

    Rp999.900

    0 Ulasan
  16. LEONARD VALVE Mixing Valve Repair Kits
    LEONARD VALVE Mixing Valve Repair Kits
    Mulai

    Rp5.899.900

    0 Ulasan
  17. Osaka Pipe Fitting & Valve Cast iron main part stainless steel foot valve tip foot 10K flange type without lever
    Osaka Pipe Fitting & Valve Cast iron main part stainless steel foot valve tip foot 10K flange type without lever
    Mulai

    Rp6.299.900

    0 Ulasan
  18. Osaka Pipe Fitting & Valve Cast iron main part stainless steel foot valve Tip foot 10K flange type with lever
    Osaka Pipe Fitting & Valve Cast iron main part stainless steel foot valve Tip foot 10K flange type with lever
    Mulai

    Rp6.299.900

    0 Ulasan
  19. Osaka Pipe Fitting & Valve Cast iron main part stainless steel foot valve Intermediate foot 10K flange type
    Osaka Pipe Fitting & Valve Cast iron main part stainless steel foot valve Intermediate foot 10K flange type
    Mulai

    Rp7.499.900

    0 Ulasan
  20. Osaka Pipe Fitting & Valve Cast iron main part gunmetal foot valve Tip foot 10K flange type without lever
    Osaka Pipe Fitting & Valve Cast iron main part gunmetal foot valve Tip foot 10K flange type without lever
    Mulai

    Rp6.299.900

    0 Ulasan
  21. Osaka Pipe Fitting & Valve Cast iron main part gunmetal foot valve tip foot 10K flange type with lever
    Osaka Pipe Fitting & Valve Cast iron main part gunmetal foot valve tip foot 10K flange type with lever
    Mulai

    Rp6.299.900

    0 Ulasan
  22. Osaka Pipe Fitting & Valve All cast iron, single-open foot valve, intermediate foot, screw-in type
    Osaka Pipe Fitting & Valve All cast iron, single-open foot valve, intermediate foot, screw-in type
    Mulai

    Rp2.099.900

    0 Ulasan
  23. Gala Foot Valve C/I
    Gala Foot Valve C/I
    Mulai

    Rp1.799.900

    0 Ulasan
  24. WATTS Pressure Safety Relief Valve Lead Free
    WATTS Pressure Safety Relief Valve Lead Free
    Mulai

    Rp179.999.900

    0 Ulasan
  25. VENN Temperature Control Valve TD-2 Series (For Heating And Liquid)
    VENN Temperature Control Valve TD-2 Series (For Heating And Liquid)
    Mulai

    Rp21.999.900

    0 Ulasan
  26. VENN Fukutaro SCS Safety Relief Valve [0.05-01Mpa, with Lever, Soft Seat]
    VENN Fukutaro SCS Safety Relief Valve [0.05-01Mpa, with Lever, Soft Seat]
    Mulai

    Rp11.999.900

    0 Ulasan
  27. VENN FCD Internal Epoxy Pressure Reducing Valve [0.3-1.2Mpa, J20KRF, Fire Certified Product]
    VENN FCD Internal Epoxy Pressure Reducing Valve [0.3-1.2Mpa, J20KRF, Fire Certified Product]
    Mulai

    Rp93.999.900

    0 Ulasan
  28. Osaka Pipe Fitting & Valve All cast iron, single-open foot valve, tip foot, screw-in type, with lever
    Osaka Pipe Fitting & Valve All cast iron, single-open foot valve, tip foot, screw-in type, with lever
    Mulai

    Rp1.899.900

    0 Ulasan
  29. Yoshitake Pressure Reducing Valve GP-2000 (JIS 10K FF) End Flange Connection
    Yoshitake Pressure Reducing Valve GP-2000 (JIS 10K FF) End Flange Connection
    Mulai

    Rp22.999.900

    0 Ulasan
  30. VENN Y Type Strainer Cast Iron Type KY-4
    VENN Y Type Strainer Cast Iron Type KY-4
    Mulai

    Rp719.900

    0 Ulasan
  31. VENN Regulator RD-3H (for Steam / Gas / Liquid) (for Steam, Screwed)
    VENN Regulator RD-3H (for Steam / Gas / Liquid) (for Steam, Screwed)
    Mulai

    Rp7.299.900

    0 Ulasan
  32. VENN New Standard Compliant Hot Water Equipment Relief Valve
    VENN New Standard Compliant Hot Water Equipment Relief Valve
    Mulai

    Rp709.900

    0 Ulasan
  33. Osaka Pipe Fitting & Valve All gunmetal foot valve Intermediate foot 10K flange type
    Osaka Pipe Fitting & Valve All gunmetal foot valve Intermediate foot 10K flange type
    Mulai

    Rp18.999.900

    0 Ulasan
  34. BELIMO Control Valve 3-way
    BELIMO Control Valve 3-way
    Mulai

    Rp27.999.900

    0 Ulasan
  35. Yoshitake Safety Valve AL-150H Series
    Yoshitake Safety Valve AL-150H Series
    Mulai

    Rp11.999.900

    0 Ulasan
  36. Yoshitake Pressure Reducing Valve GD-200H Series
    Yoshitake Pressure Reducing Valve GD-200H Series
    Mulai

    Rp31.999.900

    0 Ulasan
  37. RIIFO 303 Stop Valve
    RIIFO 303 Stop Valve
    Mulai

    Rp149.900

    0 Ulasan
  38. SAILING Klep Pemanas
    SAILING Klep Pemanas
    Mulai

    Rp50.900

    0 Ulasan
  39. VENN Fukutaro SCS Safety Relief Valve [Over 0.5 1.0Mpa]
    VENN Fukutaro SCS Safety Relief Valve [Over 0.5 1.0Mpa]
    Mulai

    Rp9.099.900

    0 Ulasan
  40. Meridian Angle Valve
    Meridian Angle Valve
    Mulai

    Rp199.900

    0 Ulasan
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Halaman Terkait

  1. foot valve 6 inch
  2. automatic air vent
  3. foot valve 4 inch
  4. foot valve 3 inch
  5. air vent valve
  6. selang air panas
  7. safety valve relief
  8. foot valve
  9. water pressure
  10. foot valve mizu
  11. yoshitake valve
  12. pressure reducing valve yoshitake
  13. air valve
  14. water pressure reducing valve
  15. Water Valve
  16. kran air air
  17. gate valve harga
  18. Gas Solenoid Valve

Pertanyaan Tentang Check Valve Industrial


Apa perbedaan antara swing check valve (ayun) dan lift check valve (angkat)?

Swing check menggunakan disc (piringan) berengsel, ideal untuk fluida cair dan menawarkan pressure drop (penurunan tekanan) rendah. Lift check (tipe piston/bola) ideal untuk gas atau uap (steam) berkecepatan tinggi karena desainnya lebih tahan getaran.

Bagaimana cara menentukan material bodi (Cast Iron, SS316, Bronze) untuk check valve industri?

Pemilihan material bergantung pada korosivitas fluida. Cast Iron (besi cor) untuk utilitas umum (air). Bronze (perunggu) untuk air laut. Stainless Steel (SS316) wajib untuk fluida proses kimia agresif atau aplikasi higienis (F&B).


Produk Pressure Reducing Valve Berkualitas


1. Direct-Acting (Aksi Langsung) / Spring-Loaded

Ini adalah mekanisme paling sederhana. PRV ini beroperasi murni pada keseimbangan gaya.


  • Mekanisme: Sebuah pegas (spring) diatur (melalui adjustment screw) untuk memberikan gaya ke bawah pada diafragma atau piston. Gaya ini membuka valve plug (penutup katup). Tekanan downstream (P2) disalurkan ke bawah diafragma, membuat gaya ke atas.
  • Operasi: Jika P2 turun (permintaan downstream naik), gaya pegas lebih besar, membuka katup lebih lebar. Jika P2 naik (permintaan turun), tekanan P2 mendorong diafragma ke atas, menutup katup.
  • Karakteristik: Respon cepat, desain sederhana, robust (kokoh). Namun, akurasi terbatas dan rentan terhadap droop (penurunan).


2. Pilot-Operated (Digerakkan Pilot)

Ini adalah sistem dua tahap yang lebih kompleks, dirancang untuk akurasi tinggi dan kapasitas aliran besar.


  • Mekanisme: Unit ini menggunakan pilot, yaitu PRV direct-acting kecil, untuk mengontrol katup utama. Pilot mengalirkan fluida bertekanan upstream (P1) ke atas piston atau diafragma katup utama untuk mengaturnya.
  • Operasi: Katup pilot merasakan tekanan downstream (P2) secara presisi. Jika P2 turun, pilot membuka, mengalirkan lebih banyak tekanan P1 ke aktuator katup utama, membukanya lebih lebar.
  • Karakteristik: Akurasi setpoint sangat tinggi (±1%), kapasitas aliran (Cv) besar, dan rangeability (rentang kontrol) sangat baik. Ideal untuk jalur distribusi utama (seperti steam header atau suplai air pabrik).


Tips Memilih Pressure Reducing Valve


  • Analisis Aliran: Koefisien Aliran (Cv) PRV tidak dipilih berdasarkan ukuran pipa. PRV dipilih berdasarkan Cv (Kapasitas Aliran) yang diperlukan. Kalkulasi Cv harus mempertimbangkan:
    • Laju Aliran (Q) - Minimum, Normal, dan Maksimum.
    • Tekanan Inlet (P1) - Minimum dan Maksimum.
    • Tekanan Outlet (P2) - Setpoint yang diinginkan.
    • Media (Fluida) - Densitas atau specific gravity.
    • Oversizing (Cv terlalu besar) akan menyebabkan katup beroperasi pada bukaan sangat kecil, menimbulkan chatter (getaran), erosi, dan kegagalan prematur.

  • Media, Suhu, dan Kompatibilitas Material Material bodi (misal, stainless steel 316 untuk kimia yang bersifat korosif) dan material trim (internal) harus sesuai.
    • Elastomer (Seal, Diafragma): NBR (Buna-N) ideal untuk oli/hidrolik. EPDM ideal untuk air atau steam suhu rendah. FKM (Viton) untuk kimia dan suhu tinggi.
    • Steam Service (Servis Uap): Wajib menggunakan material trim stainless steel hardened (dikeraskan) dan diafragma logam atau graphite packing untuk menahan suhu tinggi dan erosi.

  • Akurasi dan Karakteristik Kinerja Penting untuk mendefinisikan seberapa ketat tekanan downstream harus dijaga.
    • Droop (Penurunan): Fenomena di mana tekanan downstream turun seiring peningkatan laju aliran. PRV direct-acting memiliki droop signifikan. PRV pilot-operated memiliki droop sangat minimal.
    • Lock-Up (Tekanan Statis): Saat aliran downstream berhenti (kondisi zero flow), PRV harus menutup rapat. Lock-up adalah perbedaan antara setpoint saat mengalir dan tekanan downstream saat aliran nol.



Tips Instalasi Pressure Reducing Valve


1. Proteksi Upstream

PRV adalah perangkat presisi. Y-Strainer (Saringan Y) dengan mesh (saringan) halus wajib dipasang tepat di upstream PRV untuk melindunginya dari serpihan pipa, karat, atau weld slag.


2. Bypass dan Isolasi

Instalasi profesional selalu mencakup tiga katup isolasi (gate atau ball valve): satu di upstream PRV, satu di downstream PRV, dan satu di jalur bypass paralel. Ini memungkinkan pemeliharaan (servis) PRV tanpa mematikan seluruh sistem.


3. Jalur Lurus (Straight Runs)

PRV (khususnya pilot) memerlukan aliran fluida stabil untuk merasakan tekanan secara akurat. Dibutuhkan 5-10 diameter pipa lurus di upstream dan downstream valve, bebas dari elbow atau fitting turbulen.


4. Lokasi Sensing Line (Jalur Sensor)

Untuk PRV pilot eksternal, sensing line P2 harus dipasang di downstream, pada titik non-turbulent (biasanya 5-10 diameter pipa setelah PRV), bukan tepat di outlet PRV.


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