I-valve yokhuseleko yohlobo lonyulo oluphantsi lwe-Spring

A21F-16C, A21H-16C, A21H-40, A21H-64, A21Y-100, A21H-160

A21W-16P, A21W- 40P, A21F -40P, A21W-64P, A21W-100P, A21W-160P

KA21Y-16C, KA21Y-16P

A21Y-16R, A21Y-40R, A21 Y-64R, A21Y-100R, A21Y-160R

A21F、A21H-C uhlobo zisetyenziselwa izixhobo kunye nemibhobho yomoya, ammonia, irhasi yepetroleum, etc. medium oko iqondo lobushushu ukusebenza ngaphantsi kwama-200 °C. Uhlobo lwe-A21W-P, R lusetyenziselwa izixhobo kunye nemibhobho yomgangatho kunye negesi ye-corrode kunye nendawo yolwelo yintoni ubushushu bokusebenza bungaphantsi kwama-200 ° C. Thatha izixhobo zokukhusela uxinzelelo olongezelelweyo.

Uhlobo lwe-KA21 Y lusetyenziselwa irhasi ye-petroleum engamanzi ukuba ubushushu bokusebenza bungaphantsi kwe-100°C.