Melayu

Injap Periksa

  • 30″ 600lb Metal Seated Swing Check Valve
    30″ 600lb Injap Semak Ayunan Duduk Logam
    GAMBAR MENUNJUKKAN SPESIFIKASI SEPERTI DI BAWAH
    SAIZ: 30″
    PENILAIAN: 600LB
    BADAN DAN BONNET : ASTM A216 WCB
    CAKERA: ASTM A216 WCB+STELLITE 6
    ACI: ASTM A182 F6A
    KEDUDUKAN: ASTM A105+STELLITE 6
    Lihat butiran
  • 12″ 600lb Metal Seated Swing Check Valve
    12″ 600lb Injap Semak Ayunan Duduk Logam
    GAMBAR MENUNJUKKAN SPESIFIKASI SEPERTI DI BAWAH
    SAIZ: 12″
    PENILAIAN: 600LB
    BADAN DAN BONNET : ASTM A216 WCB
    CAKERA: ASTM A216 WCB+STELLITE 6
    ACI: ASTM A182 F6A
    KEDUDUKAN: ASTM A105+STELLITE 6
    Lihat butiran
  • Api 602 Pattern Forged Lifting Check Valve
    Injap Semak Pengangkatan Tempa Corak Api 602
    GAMBAR MENUNJUKKAN SPESIFIKASI SEPERTI DI BAWAH
    SAIZ: 1″
    PENILAIAN: 150LB
    BADAN DAN BONNET : ASTM A105
    CAKERA: ASTM A105+STELLITE 6
    SPRING: INCONEL X-750
    KEDUDUKAN: ASTM A105+STELLITE 6
    JENIS LIFT/PISTON
    Lihat butiran
  • Metal seated cast iron swing check valve
    Injap sehala buaian besi tuang duduk logam
    GAMBAR MENUNJUKKAN SPESIFIKASI SEPERTI DI BAWAH
    SAIZ: 4″
    PENILAIAN: 125LB
    BADAN DAN BONNET : ASTM 536 65-45-12
    CAKERA: ASTM 536 65-45-12 + GANGSA B62/B148
    ACI: GANGSA B62/B148
    KEDUDUKAN: GANGSA B62/B148
    Lihat butiran
  • 24″ 600lb Metal Seated Wafer Double Flange Dual Plate Check Valve
    24″ 600lb Wafer Duduk Logam Bebibir Dua Injap Dua Plat Dwi
    GAMBAR MENUNJUKKAN SPESIFIKASI SEPERTI DI BAWAH
    SAIZ: 24″
    PENILAIAN: 600LB
    BADAN DAN BONNET : ASTM A216 WCB+STELLITE 6 HF
    CAKERA: ASTM A351 CF8M + STELLITE 6 HF
    ACI: ASTM A182 F6A
    KEDUDUKAN: STELLITE 6 HF
    SPRING: INCONEL X-750
    Lihat butiran
  • CNG LNG Cryogenic piston lifting check valve
    Injap sehala pengangkat omboh CNG LNG kriogenik
    SPESIFIKASI CONTOH
    SAIZ: DN25 DN40
    PENILAIAN: PN16
    TAMAT: BW ​​SEPERTI B16.25
    SUHU: -196 ℃
    BADAN DAN BONNET : ASTM A351 CF8
    PALAM: ASTM A182 F304+HF
    SEAT: PCTFE ATAU HF METAL
    PENGAKUAN: SPRING DIMUAT
    Lihat butiran
  • CNG LNG Cryogenic piston lifting check valve free forged
    CNG LNG omboh kriogenik mengangkat injap sehala bebas palsu
    SPESIFIKASI CONTOH
    SAIZ: DN20
    PENILAIAN: PN420
    TAMAT: BW ​​SEPERTI B16.25
    SUHU: -196 ℃
    BADAN DAN BONNET : ASTM A182 F304
    PALAM: ASTM A182 F304+HF
    SEAT: PCTFE ATAU HF METAL
    PENGAKUAN: SPRING DIMUAT
    Lihat butiran
  • 2500LB LTCS Forged Steel Swing Check Valve
    Injap Semak Ayunan Keluli Tempa 2500LB LTCS
    Saiz: 8" (DN 200)
    Penilaian Tekanan: 2500LB (ASME B16.34)
    Bahan Utama:
    Badan: ASTM A350 LF2
    Bonet: ASTM A350 LF2
    Cakera: ASTM A350 LF2 + STL.6 HF
    Batang: AISI 410
    Tempat duduk: ASTM A350 LF2 + STL.6 HF
    Penggerak: Kendalian sendiri
    Tamat Sambungan: Kimpalan Punggung (BW)
    Konfigurasi Reka Bentuk: Cakera tunggal, jenis ayunan
    Rawatan Permukaan: Salutan pasir + epoksi
    Julat Suhu: -46°C hingga +425°C (-50°F hingga +800°F)
    Lihat butiran
  • Metal seated dual plate wafer flange check valve
    Injap sehala bebibir wafer dwi plat duduk logam
    GAMBAR MENUNJUKKAN SPESIFIKASI SEPERTI DI BAWAH
    SAIZ: 8″
    PENILAIAN: 150LB
    BADAN DAN BONNET : ASTM A351 CF8+STELLITE 6 HF
    CAKERA: ASTM A351 CF8 + STELLITE 6 HF
    ACI: ASTM A182 F316
    KEDUDUKAN: STELLITE 6 HF
    SPRING: INCONEL X-750
    Lihat butiran
  • C95800 dual disc check valve
    C95800 dual disc check valve
    1. Sealing System
    o Pure FKM (Viton®) seats bonded directly to C95800 discs
    o Zero metal sealing components – eliminates galling risk
    o Leakage rate: ≤ 0.01 ml/min per inch seat dia. (Class VI)
    2. Simplified Disc Design
    o No Stellite hardfacing – cost-optimized for non-abrasive services
    o Disc surface: Machined to Ra 3.2 μm for optimal rubber adhesion
    3. Standard Hinge Mechanism
    o No torsion springs (non-slam feature removed)
    o Gravity-assisted closing (vertical installation required for optimal performance)
    Lihat butiran
  • CNG LNG LPG Cryogenic axial nozzle check valve free forged
    CNG LNG LPG kriogenik muncung paksi injap sehala bebas palsu
    SPESIFIKASI CONTOH
    SAIZ: 2″
    PENILAIAN: 900LB
    TAMAT: RF SEPERTI ASME B16.5
    SUHU: -196 ℃
    BADAN DAN BONNET : ASTM A182 F304
    PALAM: ASTM A182 F304+HF
    SEAT: PCTFE ATAU HF METAL
    PENGAKUAN: SPRING DIMUAT
    Lihat butiran
  • Rubber seat dual plate check valve
    Injap sehala plat dwi kerusi getah
    GAMBAR MENUNJUKKAN SPESIFIKASI SEPERTI DI BAWAH
    SAIZ:DN100
    PENILAIAN:PN16
    BADAN DAN BONNET : ASTM A536 65-45-12
    CAKERA: ASTM A536 65-45-12
    ACI: 416SS
    KEDUDUKAN: EPDM
    Lihat butiran

A check valve, also known as a non-return valve, is a type of valve that allows fluid or gas to flow in one direction only, preventing backflow that could damage equipment or disrupt system performance. It operates automatically and doesn’t require manual or external control. Inside the valve, a disc or similar mechanism opens when fluid flows in the intended direction and closes if the flow reverses. There are several types of check valves, such as swing, lift, ball, and diaphragm types, each designed for specific applications or media. For instance, swing check valves are commonly used in water and wastewater systems, while lift check valves are more suitable for high-pressure lines. Check valves are critical in protecting pumps, compressors, and pipelines from backflow damage, maintaining pressure, and preventing contamination. Their simple, self-operating design makes them ideal for both industrial and domestic use, especially in systems where reliability and safety are essential.

Why Are Check Valves Important In Piping Systems?

Check valves are essential components in piping systems because they automatically prevent reverse flow, which can cause serious issues such as water hammer, pressure drops, contamination, and equipment failure. In systems involving pumps, check valves ensure that the fluid only moves in the desired direction, thereby avoiding potential damage when the pump shuts down or pressure fluctuates. They are especially important in systems with vertical piping or in applications where back pressure is a concern. Additionally, check valves contribute to system efficiency by maintaining line pressure and reducing the load on pumps and compressors. Their ability to operate without human intervention also makes them reliable safety devices in both high-pressure and low-pressure systems. Whether used in water treatment, oil and gas, HVAC, or chemical processing, check valves play a vital role in maintaining flow control, system integrity, and operational safety.

Check Valves FAQ

  • 1.What does a check valve do?

    It prevents reverse flow in a piping system.

  • 2.Is a check valve one-way?

    Yes, it only allows flow in one direction.

  • 3.Can check valves be installed vertically?

    Yes, but only certain types like lift or spring-loaded ones.

  • 4.Do check valves need maintenance?

    Generally low-maintenance, but periodic checks help.

  • 5.Where are check valves commonly used?

    Pumps, pipelines, HVAC, water treatment, and chemical systems.

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