Stellite Alloy Balls And Valve Seats Blanks
Tungsten carbide valve ball and seat can be made by different material grade, however different material grade performance would directly affects the use effect and service life of the sucker rod pumps. It is very important to choose the correct material grade.
Valve ball and seats made of tungsten carbide have high strength,high wear resistance, high precision, good temperature resistance and good corrosion resistance.
The most common material grade details are as follows:
| Grade |
Blind |
Density g/cm3 |
HRA |
TRS |
| YG6 |
Co |
14.9 |
89.5 |
2150 |
| YG8 |
Co |
14.6 |
89 |
2320 |
| YN6 |
Ni |
14.8-15.0 |
90.5 |
2100 |
| YN9 |
Ni |
14.6-14.8 |
89.5 |
2200 |
| YN12 |
Ni |
14.2-14.4 |
86.5 |
2250 |
Tungsten carbide valve ball and valve seat size specifications (mm):
| Type |
Q-15.9 |
Q-17.5 |
Q-22.2 |
Q-31.8 |
Q-34.9 |
Q-38.1 |
Q-50.8 |
Q-57.2 |
Q-63.5 |
| Diameter D |
15.9 |
17.5 |
22.2 |
31.8 |
34.9 |
38.1 |
50.8 |
57.2 |
63.5 |
Tolerance Allowed
| Diameter D |
D≤25 |
25 |
45 |
D≥60 |
| Tolerance |
+0.5~+1.5 |
+0.7~+2.0 |
+1.0~+2.5 |
+1.5~+3.0 |
| Type |
D |
d |
H |
R |
| FZ-23.3*14.0*12.9-R-1.6 |
23.3 |
14.0 |
12.90 |
1.60 |
| FZ-29.6*17.0*12.8-R-1.6 |
29.6 |
17.0 |
12.80 |
1.60 |
| FZ-35.2*21.0*12.8-R-2.4 |
35.2 |
21.0 |
12.80 |
2.40 |
| FZ-37.5*24.4*12.8-R-2.4 |
37.5 |
24.4 |
12.80 |
2.40 |
| FZ-43.6*27.0*12.8-R-2.4 |
43.6 |
27.0 |
12.80 |
2.40 |
| FZ-68.8*41.3*19.2-R-2.4 |
68.8 |
41.3 |
19.20 |
2.40 |
Tolerance Allowed
| Out Diameter |
Tolerance |
| D |
d |
H |
| D≤30 |
+0.5~+1.0 |
-1.0~-0.3 |
+0.4~+1.0 |
| D>30 |
+0.8~+1.5 |
-1.2~-0.5 |
+0.8~+1.5 |
We could also producing under your drawing.
Application:
Tungsten carbide valve ball and seats are used for sealing valves of oil pumps in petroleum industry's sand containing wells,viscous oil wells, sea oil wells,high pressure sulfur resistant oil wells etc.
