Normally closed nc valves usually have the valve closed in unpressurized conditions and use a spring to return the valve to the rest state.
Angle seat valve working.
Benefits compact design high flow rates visual position indicator.
Normally open no valves have the.
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Angle seat piston valves are particularly suited to applications where high temperatures and large flow rates are required such as steam or water.
An angle seat piston valve is a pneumatically controlled valve with a piston actuator providing linear actuation to lift a seal off its seat.