Carbon Steel Check Valve
Classify:
Swing Check Valve
型号:
1051801580543500288
keyword:
Product details
Introduction video of Swing Check Valve :
GZP Swing check valves are manufactured to the latest edition of API 600/ASME B 16.34 and tested to API 598.All valves from GZP VALVE are strictly 100%tested before shipment to guarantee zero leakage.
Swing check valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction and prevent the flow in the opposite direction. They are widely applied in petroleum, chemical, food, medicine, textile, power, marine, metallurgy, energy systems, etc
The disc of swing check valves is round-shaped; it makes rotary movements along the shaft's central line acted by the fluid pressure,the fluid flows from the inlet side to the outlet side. When the inlet pressure is lower than the outlet pressure, its disc can close automatically due to factors like fluid pressure difference and deadweight to prevent the fluid from flowing back;
The main construction features of GZP Swing check valve are following:
1.Built-in trim structure design
GZP check valve adopts a built-in structure. The valve disc and hinge arm are both inside its inner chamber, thus having no impact on its flow and reducing its leakage points;
2.Integral forged or rolled body seat or seat welded and overlaid in kinds of material
Welded overlay are strictly according to approved WPS procedures. After welding and all required heat treating, the seat ring faces are machined, thoroughly cleaned and inspected before leaving for assembly.
3.The large size is provided with a lifting ring for lifting, thus easier for installation; Swing check valves can be installed in either horizontal or vertical direction.
Technical Data |
|
Design Standard |
API6D, BS1868, DIN3356,EN10739 |
Body Material |
Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel.etc. |
NACE MR-01-75/NACE MR-01-03 Special Requirements |
|
Pressures range |
ANSI 150 ~ANSI 2500 ,PN10~PN420 |
Size range |
DN50(2") ~DN1200 (48") |
Face to Face |
ANSI B16.10,EN 558,DIN3202 |
Flanged RF, FF, RTJ Ends |
ASME B16.5 ≤ DN600 (24") ASME B16.47 A ≥ DN650 (26") |
BS 4504,DIN 2543-2545,EN1092 |
|
Butt-Weld BW Ends |
ASME B16.25 ,DIN 3239,BS 2080, EN 12627 |
Temperature range |
-29°~ 425°C |
Design Feature |
|
Construction |
Lift type, Swing type,Wafer type,Pressure seal bonnet,Bolted Bonnet |
Disc Type |
Dual plate, single plate, plug type |
Seat Sealing |
Integral body seat ,seat welded and overlaid |
Fire Safe Design |
API 607,BS 6755 |
Inspection & Test |
|
Visual Inspection |
MSS SP-55 |
Material Inspection |
PMI Test----Chemical Analysis |
HB Test---Hardness Test |
|
UT---Ultrasonic Test |
|
RT---RadiographicTest |
|
MT---Magnetic Test |
|
NDT Test Non-destructive |
|
Dimention inspcetion |
According to drawings |
Valve Inspection and Test |
API 598,DIN 3230,EN 12266,BS 5146 |
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