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Installation 

Instructions

Experience In Motion

Single Inside Pusher Type Seals

BPO, BPT, BRO, BRT, PTO, PT, RO, RO-TT,  

and others

Equipment Check

1.1 

Follow plant safety regulations prior to equipment disassembly: 

 

1.1.1 

Wear designated personal safety equipment

 

1.1.2 

Isolate equipment and relieve any pressure in the system 

 

1.1.3 

Lock out equipment driver and valves 

 

1.1.4 

Consult plant Safety Data Sheet (SDS) files for hazardous material regulations

1.2 

Disassemble equipment in accordance with the equipment manufacturer’s instructions  

 

 

to allow access to seal installation area.

1.3 

Remove existing sealing arrangement (mechanical seal or otherwise).    

 

 

 

Clean seal chamber and shaft thoroughly.

1.4 

Inspect surfaces under gaskets to ensure they are free from pits or scratches. Break all sharp    

 

corners on shaft steps, threads, reliefs, shoulders, key ways, etc. over which gasket(s) must    

 

pass and/or seal against.

1.5 

Check shaft or sleeve OD, seal chamber bore, seal chamber depth, gland pilot, stud diameter,    

 

stud bolt pattern and distance to first obstruction to ensure they are dimensionally the same    

 

as shown in the seal assembly drawing.

1.6 

Check seal assembly drawings for any modifications (reworks) to be made to the equipment    

 

for mechanical seal installation and act accordingly.

1.7   The equipment must be earthed to prevent sparks due to static electricity discharge.

Summary of Contents for BPO

Page 1: ...3 Remove existing sealing arrangement mechanical seal or otherwise Clean seal chamber and shaft thoroughly 1 4 Inspect surfaces under gaskets to ensure they are free from pits or scratches Break all...

Page 2: ...is found outside the general range contact the equipment manufacturer and your Flowserve representative to verify the equipment s suitability for the seal Seal chamber squareness to the shaft centerli...

Page 3: ...Handle PTFE U cup rings and Durafite rotating face gaskets with extreme care PTFE U cup rings must be assembled individually and not pushed on the shaft or sleeve while they are installed on the rotat...

Page 4: ...pring holder at reference mark B Figure 5 and tighten set screws firmly and evenly The rotating component assembly is now in the proper position to provide the correct setting and spring compression f...

Page 5: ...al 4 6 Set the back of the spring holder at reference mark B Figure 5 and tighten set screws firmly and evenly In cases where the spring holder is provided with drive slots to engage with the pins the...

Page 6: ...mber whenever the equipment is in operation API Plan 11 or 32 5 2 If the seal runs hot check for proper seal setting seal housing dimensions and check the bypass or flush line for obstructions Do not...

Page 7: ...B M number A spare backup seal should be stocked to reduce repair time When seals are returned to Flowserve for repair decontaminate the seal assembly and include an order marked Repair or Replace A s...

Page 8: ...tractors in the safe use of Flowserve products in connection with the specific application While the information and specifications contained in this literature are believed to be accurate they are su...

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