Service Street Tee with welded coupling

With the Mazco Safe-T-Stopper®

 


Usage instructions for threaded street tees
- 1" & 2" pipe diameters

Preparation and Pre-Fitting

1. Prepare service tee by removing all protective wrapping and scale coating from the upright and lateral branch portions of the service tee. Clean surface to bare metal finish above lateral branch including plug.

2. Before mounting the Safe-T-Stopper® ensure the plug removal tool fits properly over the service tee plug. (Fig. 1). The tool should bottom out on the plug with good magnetic strength.

Mounting the Safe-T-Stopper®

(TOOLS WITH PACKING RETAINER HALF COLLARS)


Fig. 2

1. Place the packing seal over the upper flange of the service tee. The seal must be installed with the bevel facing downward. (Fig. 2). Place the appropriately sized reducer ring on top of the seal and over the plug.

2. Using a four-corner wrench, loosen the plug until the plug is hand tight. On severely corroded plugs a pipe wrench will be necessary.

NOTE: Do not loosen too much as the plug could become disengaged from the threads. The plug removal tool is not designed to break the plug loose.


Fig. 3

 


Fig. 4

3. Place the packing retainer and cap housing (with or without valve) over the packing retainers, aligning the two packing retainer bolts through the packing retainer half-collars (Fig. 4).

4. For tools equipped with the securing hooks on the outside of the packing retainer and cap housing, attach one end of the safety strap to the hook on one side, loop around the main line, and attach the other end of the safety strap to the other hook. Pull strap end to tighten.

5. Using a 9/16" wrench, slowly tighten packing retainer nuts evenly while ensuring the packing retainers are moving upwards into retainer housing. Be sure to keep entire tool raised up under service tee cap.


Fig. 5

Tighten packing retainer nuts until the tool is secure on the service tee. Do not over-tighten.

6. The tool should be straight upward when mounted correctly on the service tee.

7. Thread ball valve onto retainer and cap housing if not already secured. Ball valve handle should be in upward position and bleeder valve on upper side of ball valve. Hand-tight is sufficient"”do not use wrenches. Valve can be left in open position (Fig. 5).

(TOOLS USING LOCKDOWN OVER CENTER RETAINING DEVICE)

1. Place the packing seal over the upper flange of the service tee. Place the appropriately sized reducer ring on top of the seal and over the plug.

2. Using a four-corner wrench, loosen the plug until the plug is hand tight. On severely corroded plugs a pipe wrench will be necessary.

NOTE: Do not loosen too much as the plug could become disengaged from the threads. The plug removal tool is not designed to break the plug loose.

 3. Place the the Street Tee and Saddle Clamp adapter over the packing seal on the top of the Street Tee or Saddle Clamp.

4. Attach the lockdown adjustable strap, adjust properly and push down evenly on both handles, ensuring the tool stays centered until the latches lock in place and the tool is secured. Do not use excessive force. 

6. The tool should be straight upward when mounted correctly on the service tee.

7. Thread ball valve onto Street Tee and Saddle Clamp adapter if not already secured. Ball valve handle should be in upward position and bleeder valve on upper side of ball valve. Hand-tight is sufficient"”do not use wrenches. Valve can be left in open position (Fig. 5).
 


Fig. 6

Removing Threaded Plug 


CAUTION: If at any point during these procedures there is any apparent release of gas or other product stop the procedure immediately, and take corrective action.

1. Thread cap removal tool onto ball valve (Fig. 6). Hand-tight is sufficient. Do not use wrenches.

NOTE: Apply a light film of grease to the tool shaft to assist in shaft movement.

2. Close 1/8" bleeder valve on the upper side of the ball valve. 


Fig. 7

3. Lower plug removal tool onto plug and engage plug adapter.

4. Rotate tool counter-clockwise to remove the plug. Be sure to press down firmly while turning to ensure the tool does not hydraulic away from the plug. A slight ratchet effect will be felt and heard once the plug threads are disengaged from the service tee threads.

5. Slowly raise the plug removal tool until completely up and out of the valve (Fig. 7).

6. Close ball valve and open 1/8" bleeder valve until pressure is completely released (Fig. 7).

7. Remove plug removal tool.  

 


Fig. 8

NOTE: Once cap has been removed, DO NOT leave tool unattended. Place the lock-out plug on to tool if unattended. Follow company lock-out procedures 

Inserting the Expandable Plug 


Fig. 9

1. Place the expandable plug onto the expandable plug tool shaft in the tighten position. (Right side while looking down tool shaft.) Be sure the expandable plug is completely relaxed to ensure a loose fit inside of service tee (Fig. 8).

2. Before mounting expandable plug setting tool into valve, place tool along side of valve to get a distance measurement from the bottom of the expandable plug to the top of the expandable plug tool housing. Slide marking indicator down shaft to top of tool housing. This will ensure the expandable plug is located at the correct location in the Street Tee or in the perforation hole in the main line.

NOTE: Be sure to fully retract the expandable plug inside the plug setting tool housing before mounting the tool onto the valve.

3. Thread expandable plug setting tool onto the top of the ball valve (Fig. 9). Hand-tighten is sufficient. Do not use wrenches.
 

NOTE: Apply a light film of grease to the tool shaft and spring loaded inner drive shaft at the top of expandable plug setting tool to assist in shaft movement.

4. Close 1/8" bleeder valve on ball valve.

5. Open ball valve.

6. Slowly lower expandable plug down into service tee until the plug contacts the main or the pre-measured depth indicator in step 2 of the 'Inserting the Expandable Plug' Section. For removal of threaded street tees threaded into steel couplings be sure to set the expandable plug below the threaded street tee in the coupling before expanding. For street tees threaded directly into cast iron mains, the expandable plug must be expanded below the branch in tee stem or completely remove using the appropriate Safe-T-Stopper® tooling available for tee removal (see Service Tee Removal section).

For Street Tees threaded into Saddle Clamps, set the expandable plug into the perforation hole in the main line.
 

7. Turn expandable plug tool handle clockwise while holding the tool shaft, until tight.

8. Press expandable plug tool shaft down slightly while turning tool shaft clockwise approximately ¼" to disengage from expandable plug.

9. Raise expandable plug setting tool shaft completely upward.

10. Open service line riser valve and vent service line to a safe location.

11. Once pressure is released, open small bleeder valve on ball valve to confirm all pressure has been released from tool.

 


Fig. 10

12. Remove Safe-T-Stopper â„¢ tool if the service tee is to be removed. Do not remove Safe-T-Stopper â„¢ tool if service tee is to be put back in service.

NOTE: If threaded plug or expandable plug were ever to become disengaged from tool, attach magnet retrieval tool to the expandable plug setting tool to retrieve disengaged item (Figure 10). 


Fig. 11

To Remove Street Tee Type of Service Connection

(STREET TEES THREADED DIRECTLY INTO MAIN LINE OR COUPLING)

1. Once street tee has the expandable plug set securely in place, use a zip disc grinder or other approved method to cut off the street tee branch. The branch outlet must not exceed the diameter of the street tee top.

2. Re-install a new square head plug and tighten.

3. Loosen the street tee from the main - do not loosen too much as the tee could become disengaged from the threads or leak (Fig. 11).
 

Note: the reinstalled plug in #2 above must be tighter than the street tee in the threaded main.

4. Clean the top of the main to ensure a proper seating surface for the main to bottom housing seal. Mount the seal, bottom housing extension and packing retainer housing over the street tee. Be sure to keep the square head plug perfectly centered in the packing housing (Fig. 12).

 


Fig. 12

5. Attach the lockdown adjustable strap, adjust properly and push down evenly on both handles, ensuring the tool stays centered until the latches lock in place and the tool is secured. Do not use excessive force.

6. Thread the ball valve into place. The ball valve can remain in the open position. Thread the upper housing extension onto the top of the ball valve (Fig. 12).

7. Thread the plug removal adapter housing and appropriately sized plug removal adapter onto the upper housing extension and close the bleeder valve.

8. Lower the plug removal adapter downward, engage the new plug installed into the top of the street tee and unthread the street tee from the main (Fig. 12).
 

 

Note: if any leakage is encountered, stop immediately, tighten the tee back into place and take corrective action to determine location and cause of leakage. Only continue when corrective action has been taken.

9. Raise the street tee through the ball valve into the upper housing extension, close ball valve and open bleeder valve.

10. Remove plug removal tool, c/w old street tee. Remove upper housing extension.

 


Fig. 13

11. Select the appropriately sized plug removal adapter and new threaded plug. Apply approved pipe sealant onto threads. Thread the plug removal tool back onto the ball valve, close bleeder valve, open ball valve and lower plug to engage threads in main. Thread new plug securely in place. Do not over tighten or tool shaft damage could occur. Complete tightening after tool is removed (Fig. 13).

12. Remove tool and complete tightening the new plug and apply approved protective coating over work area.

 
 

To Remove Street Tee and Saddle Clamp Connections

 1. Once the expander plug has been set securly in the perforation in the main line, and all gas pressure has been safely released, the service line can be cut off and the saddle clamp completly removed off of the main line.

2. Please a new saddle device or other method of permanent closure of the expandable plug and secure in place.

NOTE: if required, the expandable plug can be removed by setting the Safe-T-Stopper® tool over the new saddle device,  removing the expander plug and placing a new threaded plug in the saddle device.

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