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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.

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