STV Type Spring-loaded Valve

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.