Shanghai Yichen High Quality Spring Brass threaded  Check Valve
   1.Material
Brass
 (HPB57-3/HPB59-1)
|
CW614N/CW617N |
CuZn39Pb3/CuZn40Pb2 |
DZR |
Lead Free Copper |
Bronze
(C83600/C84400)
|
Â
2.Specification Of Product
Â
Type Of Thread |
 Surface Treatment |
 Temperature |
 Pressure |
Medium |
Â
100% Leakage Testing
Â
|
ISO228/BSP/NPT |
 Nickel Plated/Polished Chrome |
0≤T≤ 120ºC |
1.6MPA |
Water/oil/gas |
3.Description Of Parts
Ball |
Stem |
Sealing |
Handle |
Nut |
Brass Ball With Chrome Plated
/Iron Ball With Chrome Plated
|
Brass/Iron |
PTFE(Teflon)/Plastic |
Iron Handle With Plastic/Aluminum Handle/Butterfly Handle |
Brass/Steel/Iron |
4.Brief of Check valve series   :Â
Check valve flow refers to rely on the media itself, and automatic opening and closing valve, used to prevent the backflow medium valve, also known as the non-return valve, check valve, valve, and the back pressure valve upstream.Check valve belongs to a kind of automatic valve, its main role is to prevent the backflow medium, to prevent the pump and drive motor reversal, and the discharge of the container medium.
5.Production and inspection step for Brass swing check valve :Â
1 |
Purchasing the raw material |
10 |
PQCÂ inspection |
2 |
IQCÂ inspection |
11 |
Surface treatment |
3 |
Cutting material |
12 |
PQCÂ inspection |
4 |
PQCÂ inspection |
13 |
Assemble parts to full products |
5 |
Forging parts |
14 |
Testing |
6 |
PQCÂ inspection |
15 |
Packing |
7 |
Sanding or Polishing parts |
16 |
OQCÂ inspection |
8 |
PQCÂ inspection |
17 |
Delivering |
9 |
Machines for processing |
18 |
Reorder From Customers |