Flowserve Dual Pressurized Seals - Manual (Page 2)

2
Seal Chamber Requirements Figure 1
1 Equipment Check
1.1 Follow plant safety regulations:
• lock out motor and valves.
• wear designated personal safety equipment.
• relieve any pressure in system.
• consult plant MSDS files for hazardous material regulations.
1.2 Adjust the bearings, coupling, and impeller so that the shaft is in its operating
axial position. Disassemble equipment to allow access to seal installation area.
1.3 Remove all burrs and sharp edges from the shaft and sleeve including sharp edges
of keyways and threads. Replace worn shaft or sleeve. Make sure the seal housing
bore, face, and sealing fluid flush taps are clean and free of burrs and sharp edges
than might damage O-rings, V-rings, or Duraflex rings.
1.4 Check requirements for shaft, sleeve, and seal housing. See Figure 1.
1.5 Check assembly drawing included with the dual seal for specific seal design,
materials of construction, dimensions, and piping connections.
1.6 Check shaft or sleeve OD, box depth, box bore, and distance to the first
obstruction to ensure that they are dimensionally the same as shown on the seal
assembly drawing.
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
Sleeve or shaft finish to be
0.8 μm (32 μinch) R or better a
Scribe
Mark 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
Scribe
Mark B
Seal housing bore to have √3.2 μm
(125 μinch) R finish or better a
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.