China Cemented Carbide Ball Valve Seat Grinding

Tungsten Alloy Valve Seat Ball Seat and Cemented Carbide Sphere
Main features of valve ball and vale seat
1) Material: A1Stainless steel; B1Cobalt Alloy, cast; B2 Cobalt Alloy, Powder metal;C1 Tungsten Carbide, C3 Titanium Carbide .
2) Standard: API 11AX
3) resistance against corrosion and oxidation;
Description of valve ball and vale seat
1. Valve balls and valve seats are widely used in oil fields.
2. Valve Ball and Seat performance directly affects the use effect and service life of the sucker rod pumps.
3. Each ball-and-seat combination is vacuum tested to ensure a perfect seal is obtained in all positions of contact.
API Material Symbol

SymbolSymbolHardnessMaterialA1Stainless SteelBall: HRC 58-65
Seat: HRC 52-56UNS 41000-UNS 44000B1Cobalt Alloy, CastBall: HRC 56-63
Seat: HRC 50-56Cobalt, chromium, and
tungsten alloyB2Cobalt Alloy, Powder
metalBall: HRC 53-60
Seat: HRC 51-57Cobalt, chromium, and
tungsten alloyC1Tungsten CarbideBall: HRA 88-89
Seat: HRA 88-89.5Tungsten with Cobalt
binderC3Titanium CarbideBall: HRA 89-90.5
Seat: HRA 89-90.5Tungsten and titanium carbide
with cobalt binder

Dimensional SymbolV11-106V11-125V11-150V11-175V11-200V11-225V11-250V11-375Ball-D(mm)
15.88
(0.625in)19.05
(0.75in)23.83
(0.938in)28.58
(1.125in)31.75
(1.25in)34.93
(1.375in)42.88
(1.688in)57.15
(2.25in)Seat-ID(mm)
11.68
(0.46in)13.97
(0.55in)17.02
(0.67in)20.96
(0.825in)24.38
(0.96in)26.92
(1.06in)33.27
(1.31in)43.18
(1.7in)Seat-OD(mm)
20.14
(0.793in)23.32
(0.918in)29.67
(1.168in)35.26
(1.388in)37.54
(1.478in)43.69
(1.72in)51.05
(2.01in)78.03
(3.072in)Seat-H(mm)
0.500
(12.70in)0.500
(12.70in)0.500
(12.70in)0.500
(12.70in)0.500
(12.70in)0.500
(12.70in)0.500
(12.70in)0.750
(19.05in)

Note: not all the sizes are showed in here. Other sizes are also available upon request.

Surface: unground, finished ground, polished are ok.
Grade: Common grades, ISO grades, specified grades or we can match material as per quest.
Awaiting for your inquiry, we will response you at the first time!