Stellite Material Valve Balls and Valve Seats for Sucker Rod Pumps

  API 11AX   valve balls and valve seats  
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.
 
Material:  stainless steel, ceramic,  tungsten carbide:
 
 
 1. Stainless Steel: API symbol A1 
 
2. Cobalt Alloy: API symbol B2 
 
3.   Ceramic
 
4. Tungsten Carbide: API symbol C1 
 
5. Nickel Carbide: API symbol C2
 
 
6. Titanium Carbide: API symbol C3
 
 
 

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

Main Specifications for reference:

Dimensional Symbol	V11-106	V11-125	V11-150	V11-175	V11-200	V11-225	V11-250	V11-375
Ball-D +0.020/-0.010 (+0.51/-0.25)	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   ± 0.050    (± 1.27)	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 +0.000/-0.005 (+0.00/-0.13)	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 +0.020/-0.010 (+0.51/-0.25)	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)