1)The force limiter with internal excess pressure limiter in the acutator protects the seat and plug against damage on exceeding the permissible differential pressure.
2)Cast iron only in PN16.Spheroidal graphite iron only in PN25
3)Temperature seat point can be adjusted in all versions
4)Optionally also as a flow and pressure regulator
5)Higher temperatures on request
6)For some sizes also available of stainless forged steel 1.4571