Government Contract | Texas
36 Double Disc Gate Valve

Bid Information


Bid Alert No: 00000452598

Bid Title: 36 Double Disc Gate Valve

Agency Bid No. Title: BM1618

Received Date: 01/05/2016

Close Date: 01/21/2016

Purchase Type: Not Stated

Delivery Point: Dallas, Texas

Delivery Date: Not Stated

Special Notices: Pre-Bid Conference Optional 01/14/2016 10:30 AM, Bidder Preregistration, Warranty Required

Specifications

Specifications include, but are not limited to:Body and Bonnet:The valve body and bonnet shall be made of either gray iron per ASTM A 126, Class B, or ductile iron per ASTM A536. The body and bonnet shall each be full dimensioned, with a minimum thickness as shown in table 2 of the AWWA C500 Standard. No thin-wall or "compact" design valves shall be acceptable. Castings shall be clean and sound with no structural defects. The following information, at a minimum, shall be cast in raised letters into the body or bonnet: Manufacturers' name or symbol, year cast, size, and rated working pressure.B. Bolting Materials:(1) All bonnet, stuffing box, and bypass valve nuts and bolts shall be factory-installed type 316 stainless steel. Bolt heads shall be hexagonal, with dimensions conforming to ANSI B 18.2.1. Nuts shall be hexagonal, with dimensions conforming to ANSI B18.2.2.All stainless steel bolts manufactured by drop-forging or welding shall be fully passivated bt the Type VI passivation treatment as defined by Federal Specification QQ-P-35C (Also known as the nitric 2 treatment as defined by ASTM A967-96) or by the type VII passivation treatment as defined by federal specification QQ-P-35C (ALSO KNOWN AS THE Nitric 3 treatment as defined by ASTM A967-96). The awarded shall have a water immersion test as defined in federal specification QQ-P-35C AND IN ASTM A967-96 performed on a sample of the passivated bolts, and a Certificate of Analysis shall be provided to the City of Dallas with the bid if applicable.(2) Bolts and nuts for mechanical joints shall comply with all provisions of AWWA C111, Section 11-8.5. Bolts and nuts for flanged ends shall be either ASTM A316 stainless steel bolts and nuts or ASTM 1325 Type 3 bolts with ASTM A563 Grade C3 nuts. All stainless steel bolts manufactured by drop-forging or welding shall be fully passivated by the type VI passivation treatment as defined by federal specification QQ-P-35C (Also known as the Nitric 2 treatment as defined by ASTM-A967-96) or by the type VII passivation treatment as defined by federal specification QQ-P-35C (Also known as nitric 3 treatments as defined by ASTM A967-96). The awarded shall have a water immersion Test as defined in federal specification QQ-P-35C and in ASTM A967-96 performed on a sample of the passivated bolts, and a Certificate of Analysis shall be provided to the City of Dallas with the bid if applicable.C. Gaskets:(1) All valves with mechanical joint ends shall be provided with full-dimensioned SBR mechanical joint gaskets in complete compliance with the cross-sectional drawing and dimensioning data contained in Figure 11.2 and Table 11.2 of the AWWA Standard C111, latest edition. No "special design" gaskets shall be acceptable.(2) All flanged faces shall be provided with 1/8" thick rubber ring gaskets, either of the flat design or the "Flange-Tyte" ribbed design patented by U.S. Pipe. All ring gaskets up through 48" shall be dimensioned in accordance with table A.1 of appendix A of the AWWA Standard C110, latest edition.D. Glands: All valves with mechanical joint ends shall be provided with MJ glands this shall be in full compliance with all of the requirements of the AWWA C111 standard, except that all glands shall be standard full-dimensioned glands in accordance with Figure 11.1 and table 11.1 regardless of whether gray iron or ductile iron is used. Gland designs "incorporating reduced wall section thickness" shall not be acceptable.E. Gates and Rings: Gates 3" and smaller shall be solid bronze. 4" gates shall be either cast iron with bronze gate rings or solid bronze. All gates above 4" shall be cast iron with bronze gate rings.F. Wedging Device:(1) Valves 4" and smaller shall have solid bronze wedges. Valves above 4" may have solid bronze or cast iron bronze mounted wedges, the bronze mounting shall be built as an integral unit mounted over or supported on a cast iron base and shall be of sufficient dimension to be structurally sound and adequate for the forces which will be imposed upon it when the valve is operated within the valve design parameters as set forth in the AWWA Standard C500.(2) Thin plates or shapes doweled or screwed into cast iron surfaces in such a manner that the screws or dowels are designed to carry the shear stresses which develop between cast iron base and the bronze mounting when the valve is operated within the valve design parameters as set forth in the AWWA Standard C500 will not be accepted.(3) Wedging surfaces on valves up to 16" shall be bronze to cast iron.(4) Wedging surfaces on valves 16" and larger shall be bronze to bronze. Other moving surfaces integral to the wedging action shall be bronze to iron.

Product Codes: 67000, 89000

Agency Information


Issuing Agency: City of Dallas

State: Texas

Agency Type: State and Local

Contact: Sheila Smallwood Purchasing Office, 1500 Marilla Street, Room 3FN, Dallas, Texas, 75201

Phone: 214-670-3396

Email: sheila.smallwood@dallascityhall.com

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