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  1. Yoshitake Pressure Reducing Valve for Steam Secondary Pressure (B)
    Yoshitake Pressure Reducing Valve for Steam Secondary Pressure (B)
    Mulai

    Rp4.399.900

    0 Ulasan
  2. Yoshitake Fluid Control Air Out AO-2
    Yoshitake Fluid Control Air Out AO-2
    Mulai

    Rp1.699.900

    0 Ulasan
  3. ZURN Water Pressure Reducing Valves
    ZURN Water Pressure Reducing Valves
    Mulai

    Rp2.799.900

    0 Ulasan
  4. WATTS REGULATOR Reduced-Pressure Zone Backflow Preventers
    WATTS REGULATOR Reduced-Pressure Zone Backflow Preventers
    Mulai

    Rp28.999.900

    0 Ulasan
  5. BANJO Shut Off Valve
    BANJO Shut Off Valve
    Mulai

    Rp2.799.900

    0 Ulasan
  6. VENN Water Reducing Valve RD-50SRHN Type
    VENN Water Reducing Valve RD-50SRHN Type
    Mulai

    Rp2.399.900

    0 Ulasan
  7. VENN Water Reducing Valve RD-50SHN Type
    VENN Water Reducing Valve RD-50SHN Type
    Mulai

    Rp2.399.900

    0 Ulasan
  8. VENN Water Reducing Valve Rd-25SRN Type (for Cold Districts, 80 Kpa)
    VENN Water Reducing Valve Rd-25SRN Type (for Cold Districts, 80 Kpa)
    Mulai

    Rp1.599.900

    0 Ulasan
  9. VENN RP7-Fl Benten Bronze Pressure Reducing Valve [Screwed / for Steam / Standard Pressure (0.03-0.4Mpa)]
    VENN RP7-Fl Benten Bronze Pressure Reducing Valve [Screwed / for Steam / Standard Pressure (0.03-0.4Mpa)]
    Mulai

    Rp13.999.900

    0 Ulasan
  10. VENN Regulator RP-7 (for Steam) (C3604 / CAC)
    VENN Regulator RP-7 (for Steam) (C3604 / CAC)
    Mulai

    Rp13.999.900

    0 Ulasan
  11. VENN RD31N-FL Quiet New Standard Compliant Pressure Reducing Valve [Screw-in 0.05-0.35MPa]
    VENN RD31N-FL Quiet New Standard Compliant Pressure Reducing Valve [Screw-in 0.05-0.35MPa]
    Mulai

    Rp9.699.900

    0 Ulasan
  12. VENN RD31N-FH Calm New Standard Compliant Pressure Reducing Valve [Screw-In / 0.3-0.7Mpa]
    VENN RD31N-FH Calm New Standard Compliant Pressure Reducing Valve [Screw-In / 0.3-0.7Mpa]
    Mulai

    Rp9.699.900

    0 Ulasan
  13. VENN Pressure Reducing Valve RD-35 Type (For Water / Hot Water / Air) (1.0Mpa, Screw-In)
    VENN Pressure Reducing Valve RD-35 Type (For Water / Hot Water / Air) (1.0Mpa, Screw-In)
    Mulai

    Rp33.999.900

    0 Ulasan
  14. VENN Non-Return Valve For Water Supply To Door (For Water / Hot Water) RC-44N Type
    VENN Non-Return Valve For Water Supply To Door (For Water / Hot Water) RC-44N Type
    Mulai

    Rp3.399.900

    0 Ulasan
  15. VENN New Standard Compliant Water Pressure Reducing Valve
    VENN New Standard Compliant Water Pressure Reducing Valve
    Mulai

    Rp1.799.900

    0 Ulasan
  16. VENN KY-4N Y-Strainer Made Of Bronze
    VENN KY-4N Y-Strainer Made Of Bronze
    Mulai

    Rp929.900

    0 Ulasan
  17. VENN Door-Side Water Supply Pressure Reducing Valve (with Stopcock)
    VENN Door-Side Water Supply Pressure Reducing Valve (with Stopcock)
    Mulai

    Rp3.799.900

    0 Ulasan
  18. VENN Constant Flow Valve (For Overflow Restriction / Water Supply) FD-9N Type
    VENN Constant Flow Valve (For Overflow Restriction / Water Supply) FD-9N Type
    Mulai

    Rp4.799.900

    0 Ulasan
  19. VENN Constant Flow Valve (Door-To-Door Water Supply / Hot Water Supply) FD-6N Type
    VENN Constant Flow Valve (Door-To-Door Water Supply / Hot Water Supply) FD-6N Type
    Mulai

    Rp1.499.900

    0 Ulasan
  20. VENN Benkei New Standard Compliant Pressure Reducing Valve For Individual Water Supply
    VENN Benkei New Standard Compliant Pressure Reducing Valve For Individual Water Supply
    Mulai

    Rp2.499.900

    0 Ulasan
  21. VENN Benkei New Standard Compliant Pressure Reducing Valve For Door-To-Door Water Supply
    VENN Benkei New Standard Compliant Pressure Reducing Valve For Door-To-Door Water Supply
    Mulai

    Rp2.499.900

    0 Ulasan
  22. VENN Benkei New Standard Compliant Door-To-Door Water Supply Pressure Reducing Valve
    VENN Benkei New Standard Compliant Door-To-Door Water Supply Pressure Reducing Valve
    Mulai

    Rp4.299.900

    0 Ulasan
  23. VENN AT1S-F Bellows Type Radiator Trap [Straight]
    VENN AT1S-F Bellows Type Radiator Trap [Straight]
    Mulai

    Rp2.199.900

    0 Ulasan
  24. VENN AFV1N-F New Standard Compliant Bronze Intake / Exhaust Air Release Valve
    VENN AFV1N-F New Standard Compliant Bronze Intake / Exhaust Air Release Valve
    Mulai

    Rp3.399.900

    0 Ulasan
  25. VENN AF17N-FU New Standard Compliant Compact Bronze Air Relief Valve [Union Fitting]
    VENN AF17N-FU New Standard Compliant Compact Bronze Air Relief Valve [Union Fitting]
    Mulai

    Rp2.699.900

    0 Ulasan
  26. VENN AF17N-FS New Standard Compliant Compact Bronze Air Release Valve [Rc1/4 Screw]
    VENN AF17N-FS New Standard Compliant Compact Bronze Air Release Valve [Rc1/4 Screw]
    Mulai

    Rp2.599.900

    0 Ulasan
  27. WEATHERHEAD Plug Valves
    WEATHERHEAD Plug Valves
    Mulai

    Rp1.299.900

    0 Ulasan
  28. FM Valve valve For constant water level valve Adapter with built-in core for combined use For angle type
    FM Valve valve For constant water level valve Adapter with built-in core for combined use For angle type
    Mulai

    Rp1.799.900

    0 Ulasan
  29. FM Valve valve + constant water level valve + straight type with built-in core type S-3K type + main valve only
    FM Valve valve + constant water level valve + straight type with built-in core type S-3K type + main valve only
    Mulai

    Rp17.999.900

    0 Ulasan
  30. FM Valve valve + constant water level valve + angle type + 3 type + main valve only
    FM Valve valve + constant water level valve + angle type + 3 type + main valve only
    Mulai

    Rp12.999.900

    0 Ulasan
  31. Three-M Industry Flanged foot valve without lever
    Three-M Industry Flanged foot valve without lever
    Mulai

    Rp12.999.900

    0 Ulasan
  32. FESTO Air operated valve angle seat
    FESTO Air operated valve angle seat
    Mulai

    Rp48.999.900

    0 Ulasan
  33. FESTO Air operated valve angle seat
    FESTO Air operated valve angle seat
    Mulai

    Rp31.999.900

    0 Ulasan
  34. FESTO Air operated valve angle seat
    FESTO Air operated valve angle seat
    Mulai

    Rp11.999.900

    0 Ulasan
  35. FESTO Air operated valve angle seat
    FESTO Air operated valve angle seat
    Mulai

    Rp31.999.900

    0 Ulasan
  36. FESTO Air operated valve angle seat
    FESTO Air operated valve angle seat
    Mulai

    Rp16.999.900

    0 Ulasan
  37. FESTO Air operated valve angle seat
    FESTO Air operated valve angle seat
    Mulai

    Rp13.999.900

    0 Ulasan
  38. FESTO Air operated valve angle seat
    FESTO Air operated valve angle seat
    Mulai

    Rp14.999.900

    0 Ulasan
  39. FESTO Air operated valve angle seat
    FESTO Air operated valve angle seat
    Mulai

    Rp47.999.900

    0 Ulasan
  40. FESTO Air operated valve angle seat
    FESTO Air operated valve angle seat
    Mulai

    Rp19.999.900

    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
  19. Bucket Strainer WCB

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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