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Operation and Maintenance 
Manual for MOST 3,000PSI and 
5,000PSI Dual Pack Stuffing Box 
(DPSB) 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Revision 1 

 May 2020 

 

Summary of Contents for 3,000PSI

Page 1: ...Operation and Maintenance Manual for MOST 3 000PSI and 5 000PSI Dual Pack Stuffing Box DPSB Revision 1 May 2020...

Page 2: ...tallation Inspection 10 Installation Flanged Bottom 10 Installation Threaded Bottom 11 Operation 11 Compressing the Packing 11 Preventative Maintenance 12 Inspection of an operating stuffing box 12 In...

Page 3: ...Figures Index Figure 1 Dual Pack Stuffing Box DPSB Threaded Base 7 Figure 2 Dual Pack Stuffing Box DPSB Flanged Base 8 Figure 3 Dual Pack Stuffing Box DPSB with Pivoting Base 9...

Page 4: ...e caution symbol symbol this indicates that the potential damage to equipment or injury to personnel exists Extreme care should be taken when performing operations or procedures preceded by this cauti...

Page 5: ...precautions when working around wellheads Live or discharging equipment possess certain hazards that require the awareness and vigilance of operators You MUST avoid conducting any repair or maintenan...

Page 6: ...1 2015 API Q1 and API6A Wellhead and Christmas Tree Equipment This ensures that MOST stuffing boxes are of the highest quality and are fully compatible with API equipment MOST stuffing boxes are avail...

Page 7: ...fing Box DPSB Threaded Base 1 Cap 2 Mid Section 3 Brass Block 4 Lantern Ring Parts may vary depending on stuffing box 5 O Ring model Please refer to specific sales 6 Packing drawings and Bill of Mater...

Page 8: ...2 Mid Section 3 Packing 4 Brass Block Parts may vary depending on stuffing box 5 Lantern Ring model Please refer to specific sales 6 Socket Head Cap Screw drawings and Bill of Materials for part 7 Br...

Page 9: ...2 Brass Block 3 Packing 4 Lantern Ring 5 Mid Section Parts may vary depending on stuffing box model 6 Base Section Please refer to specific sales drawings and 7 Socket Head Cap Screw Bill of Material...

Page 10: ...e with the equipment and hardware that are going to be connected 5 Confirm that the packing in the stuffing box is of the correct type and free from damage Installation Flanged Bottom Follow appropria...

Page 11: ...ccessful Operation Compressing the Packing 1 If the stuffing box is equipped with vee or chevron packing the cap to the mid body connection needs to be hand tight The mid body to lower body connection...

Page 12: ...akage or seepage still continues the stuffing box needs to be serviced Internal Threads All internal threads EU Line Pipe etc depending on model should be inspected for damage before and after use Dam...

Page 13: ...y genuine spares and replacement parts Five Year Maintenance A five year maintenance should be performed on all MOST stuffing boxes at a MOST or an authorized repair facility 1 The stuffing box is ful...

Page 14: ...ng can now be removed 7 Replace all O Rings on the seal block 8 The top section of the stuffing box can now be reassembled with the new packing 9 Re torque the set screw to minimize the risk of back o...

Page 15: ...m section and replace packing as per field service instructions 2 Inspect the seal block for wear and replace if necessary 3 Inspect the lantern ring for wear and replace if necessary 4 Replace the pa...

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