Flowserve Dual Gas Barrier Seals - Manual (Page 2)

2
1 Equipment Check
Seal Chamber Requirements
Figure 1
1.5 Make sure the shaft or sleeve and the seal chamber face
are clean and free of burrs, cuts, dents, or corrosion that might
cause leakage past the sleeve packing or housing O-ring gasket.
Replace worn shaft or sleeve. Remove sharp edges from
keyways and threads.
1.1 Follow plant safety regulations prior to equipment disassembly:
• Lock out motor and valves.
• Wear designated personal safety equipment.
• Relieve any pressure in the system.
• Consult plant MSDS files for hazardous material regulations.
1.2 Disassemble equipment in accordance with equipment manufac-
turer's instructions to allow access to seal installation area.
1.3 Remove existing mechanical seal and gland or compression
packing and packing gland (follower flange).
1.4 Check seal chamber to ensure that it is the appropriate design
for the seal you are installing. Dual gas seal configurations are
designed for both standard bore and enlarged bore seal chambers.
To first obstruction
Face of seal housing to be square to the axis
of the shaft to within 0.013 mm per millimeter
(0.0005 inches) of seal chamber bore FIM and
have a √1.6
μ
m (63
μ
inch) R finish or better a
Gland pilot can be at either of these
register locations, concentric to within
0.13 mm (0.005 inch) FIM of shaft or sleeve OD
Seal housing bore to have √3.2 μm
(125 μinch) R finish or better
Sleeve or shaft finish to be
0.8 μm (32 μinch) R or better
a
a
Shaft or sleeve OD
+0.000 mm (+0.000 inch)
-0.050 mm (-0.002 inch) ANSI
+0.000 mm (+0.000 inch) API 610/682
-0.025 mm (-0.001 inch) DIN/ISO
• Bearings must be in good condition
• Maximum lateral or axial movement of shaft (end play) = 0.25 mm (0.010 inch) FIM
• Maximum shaft runout at face of seal housing = 0.05 mm (0.002 inch) FIM
• Maximum dynamic shaft deflection at seal housing = 0.05 mm (0.002 inch) FIM
The images of parts shown in these instructions may differ visually from the actual
parts due to manufacturing processes that do not affect the part function or quality.