SECTION 15050 HOT TAP VALVE INSERTION

This spec was part of the Des Plaines, IL River WRF project that bid Feb 26, 2015.


SECTION 15050

HOT TAP VALVE INSERTION


PART 1 GENERAL

1.1 SECTION INCLUDES

A. This section describes materials, requirements and procedures for hot tap (system under pressure) connection and valve insertion to existing wastewater piping systems.

1.2 SUBMITTALS

A. Submit shop drawings under the provisions of Division 1:
1. Provide product data for tapping unit, tapping valve, and appurtenances.
2. Provide manufacturer’s installation instructions.

B. Submit operations and maintenance manual under the provisions of Section 01730.

1.3 DELIVERY, STORAGE, AND HANDLING

A. Deliver, store, and handle valves and insertion equipment under the provision of Division 1.


PART 2 PRODUCTS

2.1 ACCEPTABLE MANUFACTURERS

A. Advanced Valve Technologies, Inc., Elk Grove, IL.

B. Or equal.

2.2 GENERAL

A. Tapping Sleeves
1. Tapping sleeve shall be capable of pressure-tight assembly around the exterior of the pipe, at a working pressure not to exceed 150 PSI.
2. Tapping sleeves shall be ductile iron with mechanical joint ends. All fabricated parts shall be coated per Section 09900, System No. 5.
3. Gaskets shall be EPDM rubber.
4. All bolts and trim hardware shall be Type 316 stainless steel.

B. Tapping Valves
1. Tapping valves shall be V109 resilient seat wedge gate valves per Section 15100.
2. Hardware and fasteners shall be 316 stainless steel.

PART 3 EXECUTION

3.1 VALVE INSERTION:

A. Tapping Sleeves:
1. The pipe surface to be tapped shall be thoroughly cleaned with a wire brush to provide a smooth, hard surface for the sleeve.
2. The sleeve shall be supported independent of the pipe during the tapping operation.
3. Install in accordance with manufacturer’s instructions.

B. Hot Tap
1. The hot tap into the existing pipe shall be made using the appropriate type of cutting machine and shell cutting bit for the material being tapped.
2. The tapping machine shall be operated per the manufacturer’s operating instructions.
3. Prevent cutting material from entering the pipeline. The tapping coupon must be extracted.
4. Repair the exterior bituminous coating on the buried piping.

3.2 TESTING

A. Pressure test the sleeve and valve once installation is complete. Joints shall show no visible leakage under test. Repair joints that show signs of leakage before final acceptance.  If there are any special parts of control systems or operators that might be damaged by the pipeline test, they shall be properly protected.  Correct any damage caused by the testing.


END OF SECTION