Flowserve GCX User Manual

Installation

Experience In Motion

Instructions

GCX Series

Single bellows cartridge seal incorporating graphite secondary seals to meet the demands of the chemical processing industry

Description

The GCX seal is a cartridge mounted mechanical seal, designed for ease of installation and reliable operation. No seal setting dimensions are required. Removable centering tabs provide proper alignment. The GCX seal is designed for harsh chemical environments where conventional O-ring based seal designs are unsuccessful. Graphite secondary seals are used to provide nearly universal chemical compatibility towards

aggressive chemicals. The stationary bellows conguration allows the

seal to compensate for inadvertent misalignment of the seal chamber face, and helps to prevent clogging and hang-up of the bellows on the atmospheric side of the seal.

Installation according to the following steps will assure long trouble free life of the seal.

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 bushing 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 or gland gasket. Replace worn shaft or sleeve. Remove sharp edges from keyways and threads.

Seal Chamber Requirements Figure 1

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

μm (63 μinch) R finish or better

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

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

1.5 Check equipment dimensions to ensure that they are within the

specications shown in Figures 1, 2, and 3. Critical dimensions from Figure 2 include:

• Box Bore (dim ØC)

• Box Depth (dim G)

• Distance to First Obstruction (dim K)

• Pump Frame accommodates Gland OD (dim E)

1.6 Check gland bolting to ensure that bolt diameter and bolt circle

conform to the dimensions shown in Figure 2 and 3. (dims C & M)

1.7 Handle the GCX with care, it is manufactured to precise tolerances. The sealing faces of the GCX seal are the stationary face and the

rotating face. They are lapped at to within three helium light bands (34.8 millionths of an inch). Keep the seal faces perfectly clean at

all times.

GCX Dimensional Data in millimeters (inches) - Standard Bore Figure 2

G F

Ø E

Ø C

Ø D

Ø A

Shaft Size

& Seal Size

A C D E F G J K L M

Shaft & Box Bore Gasket Gland Sleeve Box Depth Outboard Dist. to Obst Bolt Bolt

Seal Size Min Max OD OD Penetration Min Seal Length Min Circle Slot Dia.

(1.125) N/A N/A N/A N/A N/A N/A N/A N/A N/A

33, 35 N/A N/A N/A N/A N/A N/A N/A N/A N/A

(1.375) N/A N/A N/A N/A N/A N/A N/A N/A N/A

44.45 63.5 73.0 80.0 25.5 - 127.0 6.5 8.1 64.3 66.5 98.4 14.3

(1.750) (2.500 2.875) (3.15) (4.94 - 5.00) (0.256) (0.318) (2.530) (2.620) (3.875 (0.562)

45, 48 66.7 73.0 80.0 125.5 - 127.0 6.5 8.1 64.1 65.5 98.4 14.3

(1.875) (2.625 2.875) (3.15) (4.94 - 5.00) (0.256) (0.318) (2.522) (2.580) (3.875) (0.562)

53 73.0 82.6 89.9 150.9 - 152.4 7.0 8.6 64.3 65.8 112.8 19.1

(2.125) (2.875 3.250) (3.54) (5.94 - 6.00) (0.275) (0.337) (2.530) (2.590) (4.440) (0.750)

86.1 95.3 101.2 160.5 - 162.0 7.9 9.4 64.1 66.8 123.8 19.1

(2.375) (3.388 3.750) (3.985) (6.32 - 6.38) (0.310) (0.372) (2.522) (2.630) (4.875) (0.750)

Goulds 91.1 92.1 100.1 160.5 - 162.0 16.5 19.2 64.0 66.3 123.8 19.1

(2.500-) (3.587 3.625) (3.942) (6.32 - 6.38) (0.651) (0.755) (2.521) (2.609) (4.875) (0.750)

IDP 85.7 95.2 100.1 179.3 - 180.8 4.0 5.6 76.6 79.7 155.6 14.2

(2.500-) (3.375 3.750) (3.942) (7.06 - 7.12) (0.158) (0.220) (3.014) (3.139) (6.125) (0.560)

65 92.1 109.5 117.2 182.6 - 184.2 6.7 8.3 90.1 93.3 142.9 22.2

(2.625) (3.625 4.312) (4.615) (7.19 - 7.25) (0.264) (0.326) (3.547) (3.672) (5.625) (0.875)

N/A - The GCX seal is not available in this size conﬁguration

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.

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