D-060 PN 16 D-060-C PN 16 D-062 PN 25 D-065 PN 40. A.R.I. FLOW CONTROL ACCESSORIES Ltd. Combination Air Valve for High Flow. Description.

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1 D-00 PN Water Supply D-00- PN D-0 PN D-0 PN 0 ombination ir Valve for High Flow us-d00wtr- Description The D-00 series ombination ir Valve has the features of both an air release valve and an air & vacuum valve. The air release component is designed to automatically release small pockets of air to the atmosphere as they accumulate along a pipeline or piping system when it is full and operating under pressure. The air & vacuum component is designed to automatically discharge or admit large volumes of air during the filling or draining of a pipeline or piping system. This valve will open to relieve negative pressures whenever water column separation occurs. pplications - Municipal and industrial water conveyance systems. D-00-, D-0, D-0 - additional applications - Water pipelines vulnerable to vandalism and/or water theft. - Water systems found in remote areas. - Water systems with pressure demands of & 0 bar (D-0 & D-0 respectively). Operation The air & vacuum component, with the large orifice, discharges air at high flow rates during the filling of the system and admits air into the system at high flow rates during its drainage and at water column separation. High velocity air should not blow the float shut. Water will lift the float which seals the valve. t any time during system operation, should internal pressure of the system fall below atmospheric pressure, air will re-enter the system. The smooth discharge of air reduces pressure surges and other destructive phenomena. The intake of air in response to negative pressure protects the system from destructive vacuum conditions and prevents damage caused by water column separation. ir re-entry is essential to efficiently drain the system. The air release component releases entrapped air in pressurized systems. Without air valves, pockets of accumulated air may cause the following destructive phenomena: - Obstruction of effective flow and hydraulic conductivity of the system along with a throttling effect as would a partially closed valve. In extreme cases this will cause complete flow stoppage. - cceleration of cavitation damages. - High-pressure surges. - cceleration of corrosion to metal parts. - Danger of a high-energy burst of compressed air. - Inaccuracies in flow metering. s the system starts to fill, the valve functions according to the following stages:. Entrapped air in the pipeline is discharged by the valve.. Liquid enters the valve, lifting the float which pushes the sealing mechanism to its sealing position.. Entrapped air, which accumulates at peaks along the system (where combination air valves should be installed), rises to the top of the valve, which in turn displaces the liquid in the valve's body.. The float descends, unsealing the rolling seal. The air release orifice opens and the accumulated air is released.. Liquid penetrates into the valve and the float rises, pushing the rolling seal back to its sealing position. When internal pressure falls below atmospheric pressure (negative pressure):. The floats will immediately drop down, opening the air & vacuum and air release orifices.. ir will reenter the system. Main Features - Working pressure range: D bar D bar D bar D bar -Testing pressure for the air valve is. times its working pressure. - Maximum working temperature: 0. - Maximum intermittent temperature: 0. - ll main flow cross-sections are equal or greater than the nominal port area. - erodynamic design enables high flow rates of air both at intake and at discharge. - Reliable operation reduces water hammer incidents. - Dynamic design allows for high velocity air discharge while preventing

2 D-00 premature closure. - Special orifice seat design: bronze and E.P.D.M. rubber, assures long-term maintenance-free operation. - Screen protected outlet. - The upper screen is protected with a protective cover. - FE coating, both interior & exterior, according to the international standard DIN 0-. ir Release omponent - ody made of high strength materials. - ll operating parts are made of specially selected corrosion- resistant polymer materials. - Large size air release orifice: Dramatically reduces the possibility of obstruction by debris. Discharges high air flow rates. One size orifice for a wide pressure range (up to 0 bar), achieved by the.r.i. patented rolling seal mechanism. Valve Selection Size Range: - 0 " " (D-0 only) D-00, made for bar. D-00-, vandalism protected by a metal shell covering the air release component, made for bar. D-0, vandalism protected by a metal shell covering the air release component, made for bar. D-0, made for 0 bar. - These valves are manufactured with flanged ends to meet any requested standard. - The valve is also available with a threaded SP or NPT connection. - Valve coating: baked epoxy coating according to the international standard DIN Other coatings are available upon request. - The air release component and the air & vacuum component are available as separate units. - For best suitability, it is recommended to send the fluid chemical properties along with the valve request. Upon ordering, please specify: model, size, working pressure, threads standard and type of liquid.

3 D-00 DIMENSIONS ND WEIGHTS Nominal Dimensions mm Weight Orifice rea mm Size internal external D Kg. / V uto. (mm) Threaded / ½. 0. (mm) Flanged 0 / ½. 0. (0mm) Threaded / (0mm) Flanged /. 0 (0mm) /.0 00 (00mm) /. 0 (0mm) /.00 (00mm) / (0mm) /. 0 " PRTS LIST ND SPEIFITION. ody Reinforced Nylon. Discharge Outlet Polypropylene. Rolling Seal E.P.D.M.. lamping Stem Reinforced Nylon. Float Foamed Polypropylene. O-Ring UN-N. ase Reinforced Nylon. Strainer Nylon. over Ductile Iron STM Orifice Seat ronze. Orifice Seal E.P.D.M.. olt, Nut & Washer Steel, Zinc obalt oated / St.St.. O-Ring UN-N. ody Ductile Iron STM Float Polycarbonate D 0

4 D-00 "-0" PRTS LIST ND SPEIFITION. ody Reinforced Nylon. Discharge Outlet Polypropylene. Rolling Seal E.P.D.M.. lamping Stem Reinforced Nylon. Float Foamed Polypropylene. O-Ring UN-N. ase rass STM -. Strainer Nylon. Domed Nut & Washer Stainless Steel SE 0 0. Screen over - Ductile Iron -0 Polyethylene. Threaded Rod Stainless Steel SE 0. Screen Stainless Steel SE 0. over Ductile Iron STM olt, Nut & Washer Steel, Zinc obalt oated / Stainless Steel. Orifice Seat ronze. Orifice Seal E.P.D.M.. O-Ring UN-N. Float Polycarbonate. ody Ductile Iron STM

5 D-00- / D-0 DIMENSIONS ND WEIGHTS Nominal Dimensions mm Weight Orifice rea mm Size internal external D Kg. / V D-00- uto. D-0 (mm) Threaded / ½. 0. (mm) Flanged / ½. 0. (0mm) Threaded 0 / 0. 0 (0mm) Flanged 0 /. 0 (0mm) /.0 00 (00mm) 0 /. 0 (0mm) 0 /.00 (00mm) 0 / (0mm) /. 0 0 PRTS LIST ND SPEIFITION. Shell D-00- ast Iron STM - L D-00-, D-0 Ductile Iron STM ody Reinforced Nylon. Discharge Outlet rass STM -. Rolling Seal Rubber E.P.D.M.. Float Foamed Polypropylene. lamping Stem Reinforced Nylon. O-Ring UN-N. ase rass STM. Strainer Nylon 0. Domed Nut & Washer Stainless Steel SE 0. Screen over - Ductile Iron -0 Polyethylene. Threaded Rod Stainless Steel SE 0. Screen Stainless Steel SE 0. over Ductile Iron STM olt, Nut & Washer Steel, Zinc obalt oated / Stainless Steel. Orifice Seat ronze. Orifice Seal E.P.D.M.. O-Ring UN-N. Float Polycarbonate 0. ody Ductile Iron STM

6 D-0 DIMENSIONS ND WEIGHTS Nominal Dimensions mm Weight Orifice rea mm Size internal external Kg. / V uto. (0mm) Threaded 00 / SP -. 0 (0mm) Flanged / SP -. 0 (0mm) 0 / SP (00mm) (0mm) (00mm) PRTS LIST ND SPEIFITION. Discharge Outlet PV. Orifice Reinforced Nylon. Rollpin Stainless Steel SE 0. O-Ring UN-N. Rolling Seal E.P.D.M.. Rollpin Stainless Steel SE 0. Lever Reinforced Nylon. Rollpin Stainless Steel SE 0. over Ductile Iron STM O-Ring UN-N. olt Nut & Washer Steel, Zinc obalt oated / St.St.. Float Polycarbonate / Stainless Steel. ody Ductile Iron STM daptor rass. Domed Nut & Washer Stainless Steel SE 0. Screen over - Ductile Iron STM Polyethylene / ast Iron / Ductile Iron. Threaded Rod Stainless Steel SE 0. Screen Stainless Steel SE 0. over Ductile Iron STM olt, Nut & Washer Steel, Zinc obalt oated / St.St.. Orifice Seat ronze. Orifice Seal E.P.D.M.. O-Ring UN-N. Float "-" Polycarbonate "-0" Stainless Steel. ody Ductile Iron STM ari@ari.co.il Tel: -- reserves the right to make product changes without prior notice. To insure receiving updated information on parts specifications, please call the export dept. at the.r.i. factory. shall not be held liable for any errors. ll rights reserved.