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Basic Info.
Product Description
Valve Seat Brief Introduction:
Cobalt Alloy valve ball and seat are very important parts of underground oil-well pump , they always show up together and cooperate very good , no better material can replace Cobalt Alloy now .
The valve balls are made of Cobalt Alloy 20 and valve seat are made of Cobalt Alloy 3 . They are a good team to resist the wear and corrosion issue in oil and gas pimping process .
What is the Details of our Cobalt Alloy seat and ball?
| Material : | Cobalt Alloy -Grade 3 and 20 |
| Process : | Powder Metallurgy, it is short for PM |
| Hardness: | 53-59HRC |
| Density : | 8.6-8.8 g/cm ³ |
| Size : | Diameter 11-60 mm
|
| Properties : | Wear and corrosion resistance, high-temperature resistance |
| Application : | Oil well pump components, wear and corrosion resistance parts |
| Instructions : | Drawing made upon customer request |
| Usage : | one ball with one valve |
| Tolerance control : | Turning or grinding surface, tolerance upon drawing |
| Production lead time | Samples 10 days, normal order 30 days |
| Production capacity : | 40,000pcs one month. |
| Package : | Carton or wooden case, pallet for export |
Cobalt Alloy 3 Valve Seat Chemical composition :
| Grade | C | Mn | Si | Cr | Ni | Mo | W | Co | Fe | P | S | Density (g/cm3) | Hardness (HRC) |
| Co 3 | 2.0-2.7 | 1.0 | 1.0 | 29-33 | 3.0 | 11-14 | Bal. | 3.0 | ≤0.03 | ≤0.03 | 8.55 | 51-55 | |
| Co 20 | 2.2-3.0 | 2.0 | 30-34 | 3.0 | 1.0 | 14-18 | Bal. | 3.0 | ≤0.05 | ≤0.05 | 8.65 | 53-59 |
API Valve Seat and ball Standard
| No. | Specifications | Seat Dimensions OD/ID×H (in) | Weight (g/pc) | Ball Dimensions | Weight (g/pc) |
| 1 | VII-106 | 0.793/0.460×0.500 | 22.81 | 15.88 | 18.44 |
| 2 | VII-125 | 0.918/0.550×0.500 | 29.55 | 19.05 | 31.84 |
| 3 | VII-150 | 1.168/0.670×0.500 | 49.53 | 23.83 | 62.32 |
| 4 | VII-175 | 1.388/0.825×0.500 | 68.13 | 28.58 | 107.51 |
| 5 | VII-200 | 1.478/0.960×0.500 | 69.05 | 31.75 | 147.40 |
| 6 | VII-225 | 1.720/1.060×0.500 | 100.34 | 34.93 | 196.27 |
| 7 | VII-250 | 2.010/1.310×0.500 | 127.04 | 42.88 | 363.10 |
| 8 | VII-375-1 | 3.072/1.700×0.750 | 536.94 | 57.15 | 859.63 |
| 9 | VII-375-2 | 3.072/1.880×0.750 | 484.12 | 57.15 | 859.63 |
