China Polished Tungsten Carbide Valve Seats and Balls, Find details about China Tungsten Carbide Valve Balls and Seats, Stellite Valve Balls and Valve Seats from Polished Tungsten Carbide Valve Seats and Balls
API No. | Seat Size | Ball Size |
V11-106 | 1-1/16" | 5/8" |
| V11-125 | 1-1/4" | 3/4" |
| V11-150 | 1-1/2" | 15/16" |
| V11-175 | 1-3/4" | 1-1/8" |
| V11-200 | 2" | 1-1/4" |
V11-225 | 2-1/4" | 1-3/8" |
| V11-250 | 2-3/4" | 1-1/16" |
V11-375 | 3-3/4" | 2-1/4" |
Symbol | Symbol | Hardness | Material |
A1 | Stainless Steel | Ball: HRC 58-65 Seat: HRC 52-56 | UNS 41000-UNS 44000 |
B1 | Cobalt Alloy, Cast | Ball: HRC 56-63 Seat: HRC 50-56 | Cobalt, chromium, and tungsten alloy |
B2 | Cobalt Alloy, Powder Metal | Ball: HRC 53-60 Seat: HRC 51-57 | Cobalt, chromium, and tungsten alloy |
C1 | Tungsten Carbide | Ball: HRA 88-89 Seat: HRA 88-89.5 | Tungsten with Cobalt binder |
C3 | Titanium Carbide | Ball: HRA 89-90.5 Seat: HRA 89-90.5 | Tungsten and titanium carbide with cobalt binder |