CAST IRON SLIDE GATE - Hydro Gate

1 PRODUCT SPECIFICATIONS cast iron SLIDE gate Form 13717 r2-17 page 1 of 6 GENERAL SUMMARY A. The Contractor shall provide all labor, materials, equipment, and incidentals required to furnish and install SLIDE gates, operati ng stems, and operati ng floor stands, co mplete and operati onal with all necessa ry accessories as shown on the Contract Drawings, as sp ecified herein, or as required for complete operati on. B. The Contractor shall obtain all equipment sp ecified in this Secti on from one manufacturer to ensure proper coordinati on and functionality. The manufacturer shall have responsibility for performance and co mpati bility of the entire system. This does in no way relieve the Contractor fo r ultimate responsibilit y under this Contract for equipment, coordinati on, installation, operati on and guarantee.

2 C. The Contract Drawings are for the purpose of guidance and to show functi onal features and required external connections. They do not necessarily show all components necessa ry to accomplis h the desi red results nor do they necessa rily show all co mponents required to interface with the equipment. The Contractor shall provide all parts, equipment, and devices necessary to meet the functi onal requirements of the system. REFERENCES A. Comply with applicable provisi ons and recommendati ons of the follo wing, except as otherwise shown or sp ecified: 1. American Water Works Asso ciation (AWWA C560) 2. American National Standards Institute (ANSI) 3. American Society for Testing and Materials (ASTM) SYSTEM DESCRIPTION A. Desi gn Requirements: 1. The SLIDE gates sh all be manufact ured in accordance with the latest version of AWWA C560, cast iron SLIDE Gates, shall be co nstructed of cast iron , fully bronze seated, and will have si de wedges for seating head co nditions.

3 For SLIDE gates larger than 24 inches that will be subjected to unseating heads, top and bottom wedges will be provided. Flush- bottom closure gates, larger than 24 inch es, shall be provided with top wedges only. 2. Liberal sa fety factors will be used in the design of all equipment. Worki ng stresses will not exceed the lower value of one half of the yield strength or one fifth of the ultimate st rength of the material, whichever is less. The slid e gates and appurtenances shall be desi gned for installation in the structures as shown on the plans PRODUCT SPECIFICATIONS cast iron SLIDE gate Form 13717 r2-17 page 2 of 6 SUBMITTALS A. For approval: Submit the follo wing shop drawings for approval: 1. Manufacturer s information, sp ecifications, and data showing dimensions, materials of construct ion, and weight of all major ite ms of equipment.

4 2. Installation diagrams showing location, arrangement, and si ze of all fast eners required for the equipment. 3. Setting drawings, templat es, and instructi ons for installation of frames, thimbles, etc. 4. Certification that all co mponents were desi gned based upon the maximum se ating and unseating heads descr ibed herein. B. Upon co mpletion of installation, submit a digital copy of the Operati on and Maintenance Manual for this equipment. A final copy of this manual shall be approved by the Engineer prior to dist ribution and as a minimum shall contain the following: 1. Operati onal and maintenance manuals shall incl ude all approved shop drawings associated with this Section, co mplete inst ructi ons for installation, and parts list for all co mponents. 2. Include a list and frequency of sp ecific maintenance activities.

5 PRODUCTS MANUFACTURERS A. Provide SLIDE gates as manufactured by the follo wing: 1. Henry Pratt Company ( Hydro gate HG560) 2. Approved equal. EQUIPMENT MATERIALS A. All SLIDE gates shown on the plans and listed in the sp ecifications sh all co nform in all resp ects to the latest versi on of AWWA C560, with the noted changes and additions: Materials used in co nst ructi on of SLIDE gates and appurtenance s will be best suited for the application and will conform to the follo wing sp ecifications: 1. Casti ngs for wall thimbles, frame, SLIDE , st em guide brackets, wall brackets, pedestals, and other miscellaneous items: cast iron , ASTM A126, Class B. 2. Casti ngs for wedges: Manganese Bronze, ASTM B584, Allo y 862. PRODUCT SPECIFICATIONS cast iron SLIDE gate Form 13717 r2-17 page 3 of 6 3.

6 Seat faces in frame and SLIDE : Silicon Bronze, ASTM B98, Alloy 651. 4. Castings for stem block and lift nut: Manganese Bronze, ASTM B584, Allo y 865. 5. Castings for stem guide collars: Silicon Bronze, ASTM B584, Alloy 873. 6. Stems and retainer bars: Stainless Steel, ASTM A276, Type 304 or 316. 7. Fast eners: Stainless Steel, ASTM F593/F594, Alloy Group 1 or 2 (Type 304 or 316). 8. Flush Bottom Seal: Neoprene or EPDM, ASTM D2000, 60 Durometer. 9. Bolt-on self-contained yoke assemblies and other miscellaneous fabrications: Carbon Steel, ASTM A36 B. The frames sh all be of cast iron , one-piece constructi on with a mounting flange that has a rectangular or circular opening as indicated on the plans. All co ntact su rfaces of the frame shall be machined with guide grooves. The guide grooves will be integrally ca st with the frame and shall be desi gned to withst and the total thrust due to water pressure and the wedging action.

7 Bolt-on guides shall not be allowed. Length of the guide grooves sh all be capable of supporting half the height of SLIDE when in the full open position. The back of the frame shall be machined to bolt directly to the machined face of a wall thimble, pipe flange, or anch or bolt pattern. C. The SLIDE shall be of cast iron , one-piece construction, rectangular with integrally cast vertical and horizontal reinforcing ribs. A reinforci ng rib along each si de will be provided to insure rigidity between the si de wedges. A tongue on each si de, extending the full length of the SLIDE , will be machined. The maximum alloable clearance between the SLIDE and the SLIDE guide shall be 1/16 inch. Wedge pads for si de, top, and bottom wedges, when required, sh all be cast integrally on the disc and machined to receive adjustable bronze wedges.

8 A heavily reinforced stem block pocket will be cast integrally on the vertic al centerlin e and above the horizontal center, and is of su ch shape to receive the stem block (thrust nut). For non-risi ng stem gates, the stem block pocket sh all be cast on top of the SLIDE so that the stem does not project into the waterway when the gate is fully opened. D. The wedges shall be a corrosi on resi st ant material machined on all co ntact surfaces. They sh all be attached to the SLIDE with studs and nuts and will have adjusting screws with lock nuts. The Top and Botto m Wedges shall be mounted within in a recessed boss in the slid e wedge pads to prevent rotation and misalignment. E. All seat faces shall be corrosi on resi stant si licon bronze in co mposition. The extruded se at faces shall be of sp ecial shape to fill and permanently lock in the machined, dovetail grooves when driven into place.

9 The use of fasteners to install seat faces shall not be allowed. The installed seat faces will be machined to a 63 micro-inch finish or better. Maximum clearance between seat faces sh all not exceed inch es when SLIDE is fu lly closed and wedged in position against the frame. F. Flush Bottom seals shall be a so lid neoprene bulb mounted to the frame invert with a 316 stainless PRODUCT SPECIFICATIONS cast iron SLIDE gate Form 13717 r2-17 page 4 of 6 steel mounting angle and retainer bar. The entire length of the bottom of the SLIDE shall be mach ined to make uniform co ntact with the seal when it is in the seated position. G. For self-co ntained gates, a heavy fabricated yo ke shall be mounted on the machined pads provided on the upper ends of the cast frame legs. The yoke shall have a machined bearing surface for the lift or pedestal mounting plate.

10 Yoke deflection shall not exceed 1/360 of the gate width or a maximum of inch, whichever is less at maximum operating load. H. Wall thimbles shall be furnished for all SLIDE gates that are not attached to pipe flanges or co ncr ete headwalls with anchor bolts. They shall be cast iron , one-piece co nstruction of adequate section to withstand all operati onal loads and reasonable installation st resse s. Wall thimbles shall be internally braced during co ncr ete placement. A center ring or water stop shall be cast around the periphery of t he thimble. The front flange shall be machined and have tapped holes for the SLIDE gate attaching studs, and metal stamped vertical centerlines with the word top for correct alignment. Large square wall thimbles shall be provided with holes in the invert to allow air to escape during co ncr ete placement beneath the thimble.