Flowserve 80 User Manual

Installation

Experience In Motion

Instructions

Five Star Seal 80 Series

Single, cartridge mounted, ﬂexible stator pusher seal designed for general service applications

84 and 85

Description

The 84/85 seals are cartridge mounted mechanical seals, designed for ease of installation and reliable operation. No seal setting dimensions are required. Rotatable setting devices provide proper alignment. The

exible stationary face design compensates for inadvertent misalignment

of the seal chamber face. Multiple springs provide uniform face loading

and are external of the pumpage, resisting clogging or hang-up. Installa-

tion according to the following steps will assure long trouble free life of the 84/85 seals.

1 Equipment Check

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 les for hazardous material regulations.

1.2 Disassemble equipment in accordance with equipment manufacturer’s instructions to allow access to seal installation area.

1.3 Remove existing mechanical seal and gland or compression

packing and packing gland.

1.4 Make sure the shaft or sleeve and the seal housing face are

clean and free of burrs, cuts, dents, or corrosion that might cause

leakage past the sleeve gasket O-ring or gland gasket. See

Figures 1 & 2. Replace worn shaft or sleeve if it is worn in the

sleeve gasket area. Remove sharp edges from keyways and

threads.

1.5 Check equipment dimensions to ensure that they are within the dimensions shown in Figures 1 and 2. Critical dimensions include

shaft or sleeve OD (A), a chamber depth of at least dimension (G), minimum and maximum seal housing bore (C), and the minimum distance to the rst obstruction (K). See Figure 2.

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.

Seal Chamber Requirements Figure 1

To first obstruction

Face of seal housing to be square to the axis of the shaft to within 0.0005 mm/mm (0.0005 inch/inch) of seal chamber bore TIR and have a 1.6

Gland pilot can be at either of these register locations, concentric to within

0.125 mm (0.005 inch) of shaft or

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

• Bearings must be in good condition

• Maximum lateral or axial movement of shaft (end play) = 0.25 mm (0.010 inch) TIR

• Maximum shaft runout at face of seal housing = 0.05 mm (0.002 inch) TIR

• Maximum dynamic shaft deflection at seal housing = 0.05 mm (0.002 inch) TIR

sleeve OD TIR

1.6 Check gland bolting to ensure that bolt diameter (M) and bolt circle diameter (L) conform to the dimensions shown in Figure 2.

1.7 Handle the 84/85 with care, it is manufactured to precise

tolerances. The stationary and rotating sealing faces are of special importance. They are lapped at to within three light bands (34.8 millionths of an inch). Keep the seal faces perfectly

clean at all times.

μm (63 μinch) R finish or better

Shaft or sleeve OD +0.000 mm (+0.000 inch)

-0.050 mm (-0.002 inch)

+0.000 mm (+0.000 inch) API 610/682

-0.025 mm (-0.001 inch) DIN/ISO

ANSI

84/85 Dimensional Data (inches) for standard bore seal chambers

Figure 2

NPT Flush

NPT Drain (optional)

optional

NPT Quench

(optional)

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