Main steam isolation The spring-loaded pilot valve type STV is a 3/2 way valve (3 connection/2 position).
Primarily used as pilot valve to the variety of main valves. Operates with the following medium: air, steam, water, acids.
Used as main steam isolation valve in BWR and PWR reactors or as a main feedwater isolation valve.
Size: 0.2” / 5mm.
Class up to 2500.
Forged carbon or stainless steel.
The STV valve is fully qualified to IEEE 323 and IEEE 344.
Operates with: air, steam, water and acids.
Both applications with or without bellow seal are available.
More info : https://www.imi-critical.com/products/stv-type-spring-loaded-valve/