A.R.I - News

April 3, 2008 Dear Customer, A.R.I. is continuously improving it’s products. Our latest improvement is the new Seal for the check valve model NR- 010 Regev 3”,4” as an option for order. The new addition of flange seal is mounted on both sides of the NR-010 and will provide an accurate and better sealing between the check valve and the system. Please see the attached illustrating pictures. Dan Cohen General Export Manager
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New from A.R.I. Dynamic Air Valve Helps Reduces Water Hammer in the Line The D-070 Dynamic Combination Air Valve is a unique valve, which has no float and operates utilizing the rolling diaphragm principle. This special structure allows the dynamic valve to both release air and enable entry of air into the water system in a controlled and gradual manner, preventing local water hammer and water slam, thereby contributing to reduction of water hammer in the line. As installed in the line, the valve is normally closed, which prevents the entry of foreign bodies into the water system. The combination air valve releases air when the line is filled with water at very high flow rates and enables the entry of air at high flow rates when the liquid empties out of the system. The valve also releases trapped air when the system is under pressure. The D-070 valve is designed for installation at pumping stations, deep wells and on transmission lines: • On high flow rate water filtration systems • At points in transmission lines where the water column is separated, combined with systems to reduce water hammer and water slam in long lines. • At sites that require a relatively low profile air valve, because of the lack of space. Features: • Working pressure: 0.2 – 16 bar • Light in weight, small dimensions, simple, reliable operation. • Corrosion resistant internal parts • Valve body is coated with oven-baked epoxy or upon request. • Maximum working temperature: 60º C. Maximum instantaneous working temperature: 90º C • The automatic air release valve releases large quantities of water without becoming obstructed. • Nominal sized orifice installed in the kinetic valve • Built-in connection for surplus water drainage at the outlet.
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A NEW VERSION FOR THE A.R.I.’s COMBINATION AIR VALVE FOR SEWAGE D-023 NS Combination Air Valve for Sewage Systems A.R.I.’s D-023 Model combination air valve for sewage has a 250 micron phenol coating designed to enable resistance to highly abrasive conditions and survival in environments with corrosive and abrasive liquids such as sand, sludge, industrial and sanitary wastewater, brine and seawater. When assembled on a controlled air release valve mechanism (NS), it becomes a hammer-reducing valve and prevents slam (D-023 NS). This valve integrates a kinetic air valve, automatic air valve and (normally closed) check valve installed at its air release opening. The combination D-023 NS valve, which releases air during filling of the system, also enables the introduction of air when the system is emptying of liquids and releases trapped air when the system is under pressure. The valve protects system components from water hammer in the piping in conditions of separation of water head or rapid filling of the line with liquid. Uses • Collector line systems in which conditions of water hammer and slam are anticipated. • High points in lines with high gradients. • Points at which water head separation is created. Design specifications • The valve is manufactured in diameters of 3” and 4”. • Working pressure: 16 bars, sealed at pressures of 0.2-16 bars. • 250 micron epoxy phenol valve coating, • Stainless steel float and stainless steel interior components.
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RP 500 BACK FLOW PREVENTER MADE OF COMPOSITE PLASTIC MATERIALS THE NEW A.R.I BACK FLOW PREVENTER , WITH REDUCE PRESSURE ZONE, Designed to provide the best protection against back flow caused by negative or opposite pressure, as well as durability. Back flow may cause infiltration of chemicals , fertilizers and/or other pollutants into drinking water systems. The RP 500 is reliable and easily maintained, and does not require special tools. The RP 500 has two independent, easily replaceable, spring check valves in capsules. Function: At normal flow, the two check valves are open, supplying water down stream. The relief valve is kept closed by a diaphragm, activated by upstream pressure, through the internal control system. The pressure in the area between the two check valves is about 0.43 BAR lower than the water supply pressure. When negative pressure or sub-atmospheric conditions occur, the check valves close, preventing back flow. If the second check valve fails, the pressure between the two check valves rises, causing the opening of the relief valve, and releasing the water to the atmosphere.
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December 20, 2003 Drinking Water Certification (ANSI/NSF Standard 61) for A.R.I. Air Valves A.R.I.’s air valves (Models: D-040 , S-050, D-040-C, K-060 HF, K-060 HF NS) were officially certified for use in drinking water systems. The NSF Standards are extremely stringent, and are required by the municipalities, in the United States. This certification joins the WRAS certification of the British standards for drinking water accessories, which was issued for all A.R.I. air valves. For copies of the standard certificates, please contact our Customer Service Department – Viki Dine Tel. 972-4-6761988, e-mail:ari@ari.co.il.
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