Instruction Manual
D101299X012
RSS Valve
July 2017
4
1. The control valve assembly should be installed in a horizontal pipeline with the valve stem in a vertical position.
Before installing in any other orientation, consult your
Emerson sales office
or Local Business Partner.
Flow through the valve must be in the direction indicated by the arrow cast on the valve (figure 7).
2. With a leak‐off bonnet construction, remove the pipe plug (key 20, not shown) and install the leak‐off piping into
the tapping in the bonnet (key 2, figure 10).
3. If continuous operation is required during inspection or maintenance, install a three‐way bypass around the control
valve assembly.
4. For a valve used with a fail‐closed actuator, remove the shim (key 24, not shown) from between the bonnet and the
travel stop. Discard the shim.
5. If the actuator and valve are shipped separately, refer to the appropriate actuator instruction manual for the
actuator mounting procedure.
Note
Bench sets for Fisher 657 and 667 actuators must be adjusted after installation on the RSS valve. The heavy duty bellows on the
RSS valve has a significant spring rate that must be included in the bench set for proper operation.
Figure 2. Typical Line Flange Gasket (Key 17)
PTFE
COMPOSITION
STAINLESS STEEL
SECTION A-A
10B3224-C
A5039
A
A