Flowserve P-50 User Manual

Durametallic® P-50

Experience In Motion

A cartridge mounted, ﬂexible stator pusher seal design for general service applications

Installation

Instructions

Congratulations

You have just purchased a reliable, long-life product manufactured by the leading manufacturer of sealing systems in the world. With proper installation and operation, this P-50 seal can be a valuable contributor to

your operation by signicantly reducing the mean time between planned

maintenance (MTBPM) of your rotary equipment.

Description

This P-50 seal is a cartridge mounted mechanical seal, designed for ease of installation and reliable operation. No seal setting dimensions are required. Removable 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. Installation according to the following steps will assure long trouble free life of the P-50 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 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. Replace

worn shaft or sleeve. Remove sharp edges from keyways and threads.

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.

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 25.4 mm (1.000 inch), minimum and maximum seal housing bore (B), and the minimum distance to the rst obstruction (F).

1.6 Check gland bolting to ensure that bolt diameter and bolt circle conform to he dimensions shown in Figure 2.

1.7 Handle the P-50 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.

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

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

P-50

1.00 inch Minimum Box Depth

.88 inch

F minimum distance

to ﬁrst obstruction

Figure 2

Shaft & Seal

Size

Dimensional Data

(inches)

Shaft & B B C D E F G H Min. Bolt Circle for Bolt Dia.

Seal Size (Min) (Max) .375 .500 .625 .750

1.000 1.625 2.000 1.50 1.750 1.88 2.00 3.69 - 3.75 1.19 2.75 2.88

1.125 1.750 2.125 1.62 1.875 1.88 2.00 3.81 - 3.88 1.19 2.88 3.00

1.250 1.875 2.250 1.75 2.000 1.88 2.00 4.19 - 4.25 1.19 3.00 3.12

1.375 2.000 2.375 1.88 2.125 1.88 2.00 4.19 - 4.25 1.19 3.12 3.25

1.500 2.250 2.625 2.12 2.375 1.88 2.00 4.69 - 4.75 1.19 3.44 3.56

1.625 2.375 2.750 2.25 2.500 1.88 2.00 4.69 - 4.75 1.19 3.56 3.69

1.750 2.500 2.875 2.38 2.625 1.88 2.00 4.94 - 5.00 0.96 3.62 3.75

1.875 2.625 3.000 2.50 2.750 1.88 2.00 4.94 - 5.00 1.19 3.75 3.88

2.000 2.750 3.125 2.62 2.875 1.88 2.00 5.06 - 5.12 1.19 3.94 4.06 4.25

2.125 2.875 3.250 2.75 3.000 1.88 2.00 5.94 - 6.00 1.06 4.06 4.19 4.38

2.250 3.000 3.375 2.88 3.125 1.88 2.00 6.44 - 6.50 1.19 4.19 4.31 4.50

2.375 3.250 3.625 3.12 3.375 2.00 2.12 6.31 - 6.38 1.19 4.44 4.56 4.75

2.500 3.375 3.750 3.25 3.500 2.00 2.12 6.56 - 6.62 1.00 4.56 4.69 4.88

2.625 3.500 3.875 3.38 3.625 2.00 2.12 7.19 - 7.25 1.19 4.69 4.81 5.00 5.25

2.750 3.625 4.000 3.50 3.750 2.00 2.12 7.69 - 7.75 1.19 4.81 4.94 5.12 5.38

2.875 3.750 4.125 3.62 3.875 2.00 2.12 7.94 - 8.00 1.19 4.94 5.06 5.25 5.50

3.000 3.875 4.250 3.75 4.000 2.00 2.12 8.06 - 8.12 1.19 5.06 5.19 5.38 5.62

3.125 4.000 4.375 3.88 4.125 2.00 2.12 8.19 - 8.25 1.19 5.19 5.31 5.50 5.75

3.250 4.125 4.500 4.00 4.250 2.00 2.12 8.31 - 8.38 1.19 5.31 5.44 5.62 5.88

3.375 4.250 4.625 4.12 4.375 2.00 2.12 8.44 - 8.50 1.19 5.44 5.56 5.75 6.00

3.500 4.375 4.750 4.25 4.500 2.00 2.12 8.56 - 8.62 1.19 5.56 5.69 5.88 6.12

3.625 4.500 4.875 4.38 4.625 2.00 2.12 8.69 - 8.75 1.19 5.69 5.81 6.00 6.25

3.750 4.625 5.000 4.50 4.750 2.00 2.12 8.81 - 8.88 1.19 5.81 5.94 6.12 6.38

3.875 4.750 5.125 4.62 4.875 2.00 2.12 8.94 - 9.00 1.19 5.94 6.06 6.25 6.50

4.000 4.875 5.250 4.75 5.000 2.00 2.12 8.94 - 9.00 1.19 6.06 6.19 6.38 6.62

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