I-valve yokuphepha yohlobo lokuphakamisa oluphansi olulayishwe entwasahlobo

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

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

I-KA21Y-16C, KA21Y-16P

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

I-A21F, uhlobo lwe-A21H-C lusetshenziselwa okokusebenza kanye nepayipi lomoya, i-ammonia, i-petroleum gas, njll. medium lokho izinga lokushisa lokusebenza lingaphansi kuka-200°C. Uhlobo lwe-A21W-P, R lusetshenziselwa okokusebenza kanye nepayipi lekhwalithi elinegesi egqwalile nendawo ewuketshezi ukuthi izinga lokushisa lokusebenza lingaphansi kuka-200°C. Thatha amadivayisi wokuvikela ingcindezi eyengeziwe.

Uhlobo lwe-KA21 Y lusetshenziselwa igesi ye-petroleum ewuketshezi lokho izinga lokushisa lokusebenza lingaphansi kuka-100°C.