User Guide

VP 658 S and VP 658 SC Powertop Sequence and Sequence Changeover Valves Technical Instructions
Document No. 155-092P25
November 20, 2008
Siemens Industry, Inc. Page 7
Valve Components
Detail of Stem Packing.
Figure 5. Valve Construction (See Table 4).
Service
WARNING:
Before doing any service work, shut off the medium (water, etc.) to the
valve and remove and cap the airline to the valve actuator to prevent
personal injury and equipment damage.
Diaphragm
Replacement
Installation instructions are packaged with the replacement kit.
Stem Packing
Replacement
See TB 246 (155-301P25) VP 658 Powertop Valve Repacking Kit for recommended
procedure.
Figure 6. Actuator Assembly Removal.