Honeywell HON R100NG Series User And Maintenance Manual page 14

Actuator assembly con‐
nection lines
How the actuator as‐
sembly works
User manual for HON R100 gas pressure regulator with HON P095NG pilot
The HON R100NG and HON R100NG‐FO actuator assembly versions feature the following
ports:
Figure
Front:
Back:
HON R100NG
 In a depressurized state, the compression
spring will push the diaphragm upward so that
the valve plate will close, creating a seal at the
edge leading to the support cage (fail‐close).
 The motorization pressure will produce a force
component that acts on the diaphragm from
above.
 The force components are compared at the
diaphragm.
 If the motorization pressure is greater than the
compression spring and outlet pressure acting
from below, the valve plate will be pushed
downward. This will open a corresponding gap
between the inlet pressure and outlet pressure
areas.
No. Connection
1 Motorization pressure
2 Outlet pressure
3 Inlet pressure
1 Outlet pressure feedback
HON R100NG‐FO
 In a depressurized state, the compression
spring will push the diaphragm downward,
causing the valve plate to be pushed downward
and opening a gap between the inlet pressure
and outlet pressure areas (fail‐open).
 The motorization pressure and the compres‐
sion spring will produce force components that
act on the diaphragm from above.
 The loading pressure will produce a force
component that acts on the diaphragm from
below.
 The force components are compared at the
diaphragm.
 If the motorization pressure is greater than the
loading pressure acting from below, the valve
plate will seal off the inlett pressure areas from
each other.
Description
14