50NPS Cast steel valve rating

[sbnz]

Quick question :
Do Cl-150 and Cl-300 rating valves exist for small sizes of 25 and 50 NPS (1" and 2") - or is it minimum Cl-800?

cheers,

 

[europipe]

150 and 300# are flange ratings.
800# are (socket)welded valves.
They use all of these in many different pipespecs.

greetings