For use in the Denver Water Service Area

Materials Specification – 11
for
6 Inch Valve Boxes

1. General:

The manufacturer of valve box components shall be experienced in their design and construction, shall be regularly engaged in their manufacture and shall have produced valve boxes which have given successful service for a period of at least 5 years.

2. Materials:

Valve box parts shall be made of gray cast iron, ASTM A 48, Class 35.

Use of an aluminum alloy as a casting material is not acceptable.

3. Box Description:

Valve boxes shall be the three-piece adjustable screw type. The top section shall be 16 inches long.

4. Certification:

The manufacturer shall furnish a sworn statement that the inspection and all of the specified tests have been made and the results thereof comply with the requirements of the applicable Standard(s) herein specified. A copy of the Certification shall be sent to Denver Water.

5. Acceptable Manufacturers:

Tyler screw-type 6 inch cast iron valve box assembly Series 6860 with No. 160 oval base.

Star Pipe Model No. VBD160DMWW
Western States Pipe Model No. VBDEN
Olympic Foundry Inc. Model No. 450VB
Castings Inc. CI. 160B Oval Base
East Jordan Iron Works Series 8560