Flange, end pressure, self-tight valve, Z41Y 
 Standard material list 

 No. Part Name CS to ASTM AS to ASTM SS to ASTM 
 Type A105N Type F22 Type F304 (L) Type F316 (L) 
 1 Body A105N A182 F22 A182 F304 (L) A182 F316 (L) 
 2 seal ring A276 410 A276 304 A276 304 (L) A276 316 (L) 
 3 gate A182 F430 A182 F304 A182 F304 (L) A182 F316 (L) 
 4 stem A182 F6a A182 F304 A182 F304 (L) A182 F316 (L) 
 5 sealing seat A105N A182 F304 A182 F304 (L) F316 (L) 
 6 rings A276 304L A276 316 (L) 
 7 Bonnet A105N A182 F22 A182 F304 (L) A182 F316 (L) 
 8 live bolt A193 B7 A193 B16 A193 B8 (M) 
 9 cylindrical pin A276 F420 A182 F304 
 10 PTFE flexible graphite packing 
 11 nut A194 2H A194 4 A194 8 A194 8M 
 12 bearing gland A276 F410 A182 F304 
 13 Handwheel A105 A182 F304 
 14 locking nut A194 2H A194 4 A194 8 A194 8M 
 15 Stem nut A276-420 
 16 bearing gland A194 2H A194 4 A194 8 A194 8M 
 17 Handwheel A197 
 18 locking nut A194 2H A194 4 A194 8 A194 8M 
 Brass 19 Brass Oil Cup 
 Medium water, steam, oil and other water, steam, oil and other nitric acid, acetic acid, etc. 
 Temperature -29 ° C ~ 425 ° C -29 ° C ~ 550 ° C -29 ° C ~ 200 ° C