metso automation IMO-R8 Installation Maintenance And Operating Instructions

1
GENERAL
This instruction manual contains important information
regarding the installation, operation and troubleshooting
of the Jamesbury 2" (DN 50) 5RRU AND 5RRR Tank Car
Fire-Tite Top-Loading and Unloading Valves. Please read
these instructions carefully and save them for future reference.
1.1
WARNING
FOR YOUR SAFETY, IT IS IMPORTANT THAT THE FOLLOWING PRECAU-
TIONS BE TAKEN PRIOR TO REMOVAL OF THE VALVE FROM THE TANK
CAR OR BEFORE ANY DISASSEMBLY.
1. EXERCISE NORMAL SAFETY PRECAUTIONS TO PROTECT YOURSELF
AGAINST BOTH THE FLUID AND POSSIBLE UNRELIEVED PRESSURES
IN THE VALVE ITSELF.
2. CYCLE THE VALVE FROM FULLY CLOSED TO FULLY OPEN AND
BACK AGAIN TWO TIMES TO RELIEVE ANY RESIDUAL PRESSURE.
3. AFTER REMOVAL AND BEFORE DISSSEMBLY, CYCLE THE VALVE
AGAIN SEVERAL TIMES (AS IN NO. 2).
2
INSTALLATION
Flow through this Jamesbury valve can be in either direction.
In the case of a tongue and groove connection, however,
the tongue is installed against the tank car. Follow the
recommended practices of the gasket manufacturer when
tightening flange bolts.
IMO - R8
INSTALLATION, MAINTENANCE, AND
OPERATING INSTRUCTIONS
2" (DN 50) 5RRU AND 5RRR
TANK-CAR FIRE-TITE®
TOP-LOADING AND
UNLOADING VALVES
Read entire instructions carefully before installation or servicing
If there is weepage past the stem seals upon installation, it
means the valve may have been subject to wide temperature
variations in shipment. Leaktight performance will be
restored by a simple packing adjustment described in the
MAINTENANCE Section.
3
MAINTENANCE
Routine maintenance consists of tightening the lower
stem nut (16) to the torque shown in (Table 1) (stem nut
torque) periodically to compensate for the wear caused by
the stem turning against the stem seals. More frequent
observation is recommended under extreme operating
conditions. The upper stem nut (16) should be retightened.
Overhaul maintenance consists of replacing seats and
seals. A standard service kit consisting of these parts may
be obtained from your Metso Automation distributor (see
Table 2).
2" (DN 50) 5RRU & 5RRR
Insert Torque
Stem Nut Torque
Service Kits for 2" (DN 50) 5RRU & 5RRR Valves
Seat Material
Filled PTFE
PTFE
Issue Date: 5/03
TABLE 1
170 – 200 FT•LBS (231 – 271 N•m)
160 – 170 IN•LBS (18 – 19 N•m)
TABLE 2
Kit No.
RKR-48MT
RKR-48TT