Installation, Operation and Maintenance Manual
【
H-V063-E-9
】
Self Control Valves (Pressure Reducing Type / Pressure Relief Type / Pressure Retaining Type)
8
- Pressure Relief Type (V185), Pressure Retaining Type (V186)
- The friction coefficient and inlet pressure increase with the
flow rate.
P
Ｅ
： Set pressure (at a flow rate of 0 L/h)
P
Ａ
： Working pressure
P
Ｓ
： Closing pressure. (At a flow rate of 0 L/h)
・ The set pressure is adjusted to P
E
at a flow rate of 0 l/h. If
the flow rate is increased to Q, the outlet pressure will
increase to P
A
.
Ｐ
O
line ： The change of inlet pressure (Flow rate increasing)
Ｐ
Ｓ
line ： The change of inlet pressure (Flow rate decreasing)
・ The outlet pressure is increased and decreased from PO
to PS by increasing and decreasing the flow rate.
