AIR/VACUUM VALVE AND OPTIONAL ANTI-SLAM DEVICE SPECIFICATION

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Rachel Wade
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1 AIR/VACUUM AND OPTIONAL ANTI-SLAM DEVICE SPECIFICATION Scope. This specification is intended to cover the design, manufacture, and testing of / in. (3 mm) through 0 in. (00 mm) Air/Vacuum Valves suitable for pressures up to 0 psig (00 kpa) clean or raw water service.. Air/Vacuum valves shall be fully automatic float operated valves designed to exhaust large quantities of air during the filling of a piping system and close upon liquid entry. The valve shall re-open during draining or if a negative pressure occurs. [NOTE: See Air Release Valves for releasing air during system operation and Combination Air Valves for both air release and air/vacuum functions.] Connections. Valve sizes 3 in. ( mm) and smaller shall have full size NPT inlets and outlets equal to the nominal valve size. The body inlet connection shall be hexagonal for a wrench connection.. Valve sizes in. (00 mm) and larger shall have bolted flange inlets with plain outlets and protective hoods to prevent debris from entering the valve. Flanges shall be in accordance with ANSI. for Class or Class 0 iron flanges and ANSI. for Class 0 or Class 300 steel flanges..3 The valve shall have two additional NPT connections for the addition of Air Release Valves, gauges, testing, and draining. Design 3. The valve body shall provide a through flow area equal to the nominal valve size. A bolted cover with alloy screws and flat gasket shall be provided to allow for maintenance and repair. 3. Floats shall be unconditionally guaranteed against failure including pressure surges. The float shall have a hexagonal guide shaft supported in the body by circular bushings to prevent binding from debris. The float shall be protected against direct water impact by an internal baffle. 3.3 The resilient seat shall provide drop tight shut off to the full valve pressure rating. The seat shall be a minimum of. in. ( mm) thick on in. (0 mm) and larger valves and secured in such a manner as to prevent distortion. Valves with working pressures above 00 psig (0 kpa) shall have metal seats with synthetic seals. 3. On valve sizes in. (00 mm) and larger, the cover shall be fitted to the valve body by means of a machined register to maintain concentricity between the top and bottom guide bushings at all times. The float shall be double guided with a guide shaft extending through the float to prevent any contact with the body. A resilient bumper shall be provided to cushion the float during sudden opening conditions. Materials. The valve body, cover, and baffle shall be constructed of ASTM A Class cast iron for Class and Class 0 valves. Class 300 ductile iron valves shall be constructed of ASTM A3 Grade -- ductile iron. Class 300 steel valves shall be constructed of ASTM A Grade WC cast steel.. The float, guide shafts, and bushings shall be constructed of Type 30 Stainless Steel. Non-metallic guides and bushings are not acceptable. Resilient seats shall be una-n. Class 300 steel valves shall have a 30 Stainless Steel Seat with una- N seal to provide an initial contact to una-n with final metal to metal contact to prevent over compression of the resilient seal. Revised -- AIR/VACUUM AND OPTIONAL ANTI-SLAM DEVICE SPECIFICATION --0 AL ATIC SS-3 Sheet of

2 AIR/VACUUM AND OPTIONAL ANTI-SLAM DEVICE SPECIFICATION Options. An optional Anti-Slam Device, in. (0 mm) and larger, shall be provided when specified to prevent valve pressure surges due to column separation or rapid changes in velocity and pressure... The Anti-Slam Device shall be mounted on the inlet of the Air/Vacuum Valve, allow free air flow in and out of the valve, close upon water entry, and control the inlet water velocity to reduce valve pressure surges... The device shall be a flanged, globe pattern, and spring operated unit with a center guided disc and seat ssembly. The disc shall have threaded holes to provide adjustment of the water flow rate through the valve. The spring shall exert sufficient force to hold the disc open during high air flow conditions and allow the disc to close upon water entry...3 The material of the body shall be consistent with the Air/Vacuum Valve. The spring shall be ASTM A33 Type 30 Stainless Steel. The seat and disc shall be ASTM A3 Grade CFM stainless steel.. A flanged or screwed outlet connection shall be provided when specified for vault piping..3 A stainless steel screened outlet shall be provided when specified for outdoor installations.. Optional body materials include ASTM A3 Grade -- ductile iron, ASTM A3 Grade CFM stainless steel, and ASTM Alloy 3 cast bronze.. Optional float and trim material includes 3 stainless steel. Manufacture. The manufacturer shall demonstrate a minimum of five () years experience in the manufacture of air valves. The valves shall be manufactured and tested in accordance with American Water Works Association Standard (AWWA) C. When requested, the manufacturer shall provide test certificates, dimensional drawings, parts list drawings, and operation and maintenance manuals.. The exterior of the valve shall be coated with a universal alkyd primer..3 Air/Vacuum Valves shall be Series #00 as manufactured by Val-Matic Valve & Mfg. Corporation, Elmhurst, IL. USA. or approved equal. Revised -- AIR/VACUUM AND OPTIONAL ANTI-SLAM DEVICE SPECIFICATION --0 AL ATIC SS-3 Sheet of

3 A 3 0 COLD WORKING PRESSURE (CWP) 300 P.S.I. TEST PRESSURE =. TIMES COLD WORKING PRESSURE SEE DRAWING NO. VM-00-M FOR STANDARD MATERIALS OF CONSTRUCTION. MODEL NO. A /" 00 / " " / " N.P.T. / " N.P.T. " 0 " / " " N.P.T. " N.P.T. " 0 / " " " N.P.T. " N.P.T. 3" 03 / " " 3" N.P.T. 3" N.P.T. 3 ODY COVER AFFLE SEAT FLOAT GASKET 0 COVER OLT RETAINING SCREW GUIDE USHING PIPE PLUG GUIDE SHAFT Revised -- AIR/VACUUM -- VM-00

4 AIR/VACUUM / to 3 SERIES NO. 00 STANDARD MATERIALS OF CONSTRUCTION PART NO. 3 * 0 PART NAME ODY COVER AFFLE SEAT FLOAT GASKET COVER OLT RETAINING SCREW GUIDE USHING PIPE PLUG GUIDE SHAFT MATERIAL CAST IRON ASTM A, CLASS CAST IRON ASTM A, CLASS DUCTILE IRON ASTM A3, GRADE -- UNA-N STAINLESS STEEL T30, ASTM A0 COMPRESSED NON-ASESTOS FIER ALLOY STEEL SAE, GRADE STAINLESS STEEL T30, ASTM F3 STAINLESS STEEL T303, ASTM A STEEL STAINLESS STEEL T303, ASTM A * STAINLESS STEEL T30, ASTM F FURNISHED ON NO. 00 ONLY NOTE: ALL SPECIFICATIONS AS LAST REVISED. Revised -- MATERIALS OF CONSTRUCTION // AL ATIC VM-00-M

5 3 A Y L. CLASS (0 CWP) OR 0 L. CLASS (300 CWP) * SEE DRAWING NO. VM-0-M FOR STANDARD MATERIALS OF CONSTRUCTION. ODY COVER SEAT FLOAT GASKET L. " 0 " " 3/ " " FLG. " " 0 " 0" / " " FLG. " " 0" " 0" 3" " / " " " FLG. 0" FLG. " 0" " " 3" 3/ " " FLG. " " " 3" / " " FLG. " " 30 / " 3" / " " FLG. " 0" / " 3 / " / " 0" FLG. 0" AIR/VACUUM 0 L. A COVER OLT RETAINING SCREW GUIDE USHING CUSHION 3 HOOD HOOD RETAINING SCREW WASHER (EXTERNAL) SEAT RETAINING SLEEVE WASHER (INTERNAL) PIPE PLUG SPOOL PIECE REQUIRED WHEN MATING TO A WAFER OR LUG UTTERFLY. SEE DRAWING NO. SS- FOR SPOOL PIECE DETAIL. Revised -30- Y * 3--0 VM-0

6 AIR/VACUUM " - 0" SERIES NO. 00 STANDARD MATERIALS OF CONSTRUCTION PART NO. 3 * PART NAME ODY COVER SEAT FLOAT GASKET COVER OLT RETAINING SCREW GUIDE USHING CUSHION HOOD HOOD RETAINING SCREW WASHER-EXTERNAL SEAT RETAINING SLEEVE WASHER-INTERNAL PIPE PLUG MATERIAL CAST IRON ASTM A, CLASS CAST IRON ASTM A, CLASS UNA-N STAINLESS STEEL T30, ASTM A0 COMPRESSED NON-ASESTOS FIER ALLOY STEEL SAE, GRADE STAINLESS STEEL T30, ASTM F3 STAINLESS STEEL T303, ASTM A UNA-N STEEL - #00 STEEL (ZINC PLATED) STEEL (ZINC PLATED) STAINLESS STEEL T30, ASTM A STAINLESS STEEL T30, ASTM A0 STEEL NOTE: ALL SPECIFICATIONS AS LAST REVISED. * NOT FURNISHED ON S " & " MATERIALS OF CONSTRUCTION // Revised -- VM-0-M

7 A FOR AIR/VACUUM DETAIL SEE VM-0 FOR ANTI-SLAM DEVICE DETAIL SEE VM-00 L. CLASS (0 CWP) OR 0 L. CLASS (300 CWP) DIMENSIONS L. CLASS 0 L. CLASS A 0 0/0 0/0 0/0 0/0 / / / / / / 0/0 / / / 0 30 / / 3 / 3 / / / 3 / / 0 0/0 0/0 3 / / AIR/VACUUM WITH ANTI-SLAM DEVICE AL ATIC Revised VM-0/0

8 A L. CLASS (0 CWP) OR 0 L. CLASS (300 CWP) SEE DRAWING NO. VM-0-M FOR STANDARD MATERIALS OF CONSTRUCTION. " " L. 0S 0S 0 L. S S A " " " 0" " FLG. " FLG. " " ODY COVER SEAT FLOAT GASKET COVER OLT RETAINING SCREW GUIDE USHING CUSHION SEAT RETAINING SLEEVE PIPE PLUG AIR/VACUUM WITH SCREWED Revised VM-0S

9 A L. CLASS (0 & 300 CWP) Y L. CLASS (0 CWP) OR 0 L. CLASS (300 CWP) SEE DRAWING NO. VM-0-M FOR STANDARD MATERIALS OF CONSTRUCTION. L. 0 L. A Y * " 0F F " 3" / " " FLG. " 0" 0F 0F 0" " " 0" FLG. 0" " F F " 3" 3/ " " FLG. " " F F " 3" / " " FLG. " " F F 30 / " 3" / " " FLG. " 0" 0F 0F 3 / " 3 / " / " 0" FLG. 0" ODY COVER SEAT FLOAT GASKET COVER OLT RETAINING SCREW GUIDE USHING CUSHION SEAT RETAINING SLEEVE WASHER PIPE PLUG * SPOOL PIECE REQUIRED WHEN MATING TO A WAFER OR LUG UTTERFLY. SEE DRAWING NO. SS- FOR SPOOL PIECE DETAIL. Revised -30- AIR/VACUUM W/ FLANGED AL ATIC -- VM-0F

CUSTOM COMBINATION AIR VALVE

INSTALLATION / OPERATION / MAINTENANCE CUSTOM COMBINATION AIR VALVE INTRODUCTION This manual will provide you with the information to properly install and maintain this valve to ensure a long service life.