VALVE BALL or a couple of BALL-AND-SEAT of the 95X18Ш STAINLESS STEEL.
At present, the VALVE BALLS for deep-well sucker-rod pumps of all the dimension types both upon the American API standard and GOST are being produced at the plant.
On customer’s request the couples are produced with Hardness as follows:
1. Ball – not less, than 9 НВ, Seat – 52-56НВ.
2. Ball-and-seat – not less, than 59НВ
