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API Tungsten Carbide valve ball and valve seat
Product Description
Valve balls and valve seats are widely used in oil fields , their performance directly affects
the use effect and service life of the pumps.
Each ball-and-seat combination is vacuum tested to ensure a perfect
seal is obtained in all positions of contact.
For sealing of valves of oil pumps in petroleum industry's sand
containing wells, viscous oil wells, sea oil wells
Material performance table
| CODE | INSTRUCTION | HARDNESS | MATERIAL |
| A1 | Stainless steel | Ball: HRC 58-65 | UNS 41000–UNS 44000 |
| Seat: HRC 52-56 | 9Cr18Mo & 6 Cr18Mo | ||
| B1 | Cobalt alloy casting | Ball: HRC 56-63 | Cobalt, chromium and tungsten alloy |
| Seat: HRC 50-56 | |||
| B2 | Cobalt alloy, powder metallurgy | Ball: HRC 53-60 | Cobalt, chromium and tungsten alloy |
| Seat: HRC 51-57 | |||
| C1 | Tungsten carbide | Ball: HRA 88-89 | Tungsten with cobalt adhesive |
| Seat: HRA 88-89.5 | |||
| C3 | Titanium carbon compounds | Ball: HRA 89-90.5 | Tungsten and titanium with cobalt adhesive carbon compounds |
| Seat: HRA 89-90.5 |
Features
