Datasheet
Non-return valve with perfect self-centring The is a non-return valve that can be flexibly used for water and sewage. Featuring a 93 % opening value, it guarantees an extremely low zeta value, a head loss of less than 8 mbar in the fully opened position and a high degree of cost-effectiveness. Moreover, it is thereby scrapable in flow direction. The ball-shaped bearing pin ensures self-centring of the valve disc in the body seat which always guarantees sealed closure, even at low Interoir shaft back pressures. The shaft is supported in the cover, thereby medium free, permanently smoothly running and can easily be replaced. Apart from an internal shaft, the is also available with an external shaft including lever and weight. This design can be equipped with a basket guard to prevent accidents in the area of the lever. A conversation of internal to external shaft with lever and weight can also be done later without mounting the valve from the pipe. And in addition, the ERHARD SWING checkvalve is also available with lever and weight on both sides. Flange B DN 8, -, PN, EN 92-2 B DN -, PN 6, EN 92-2 The seat ring in the body is made of stainless steel, which, in conjunction with the inside and outside epoxy-coating of the body parts (with the thickness of 2 µm) it s an optimal protection against corrosion. Materials Body Internal parts Gaskets Screws Shaft bearing Lever Corrosion protection all-round EN-JS (GGG-) Stainless steel Elastomer, chambered Stainless steel A2 Brass Spheroidal graphite cast iron EN-JS EKB fusion bonded epoxy, blue External shaft, single-sided Areas of use Nominal size DN Pressure rating PN Hydrost. test pressure in bar DIN EN 2266 and DIN EN 74 for water Body Closure Max. allow. gauge working pressure in bar at working temperature + C 8, - 7-6 25 7,6 6 External shaft, double-sided When placing an order, please give precise details of the flow medium, concentration, gauge working pressure, working temperature and installation position. Suitable for use in conventional sewage up to a suspended matter of about 5 %. Required back pressure to absolute thigtness:,2 bar Operating instructions BA56E3_Swing_RK_ DN- 2
Offenstellung Open position Nominal size DN Pressure rating PN Flangeø D Height H Height H Width e2 Width e Length L Weight internal in kg Weight exterior in kg Bypass weight DN/kg 6 65 226 5 74 3 2 65 6 85 226 5 74 3 2 2 4 8 /6 2 45 2 2 23 5/, 6 2 2 24 27 /,5 25 6 2 37 2 95 3 43 /,5 6 285 37 2 95 46 /,5 /6 3 39 85 265 75 8 25/,7 2 /6 49 385 245 355 48 54 25/,7 /6 455 4 245 355 69 75 32/2, 3
Zeta-values DN PN 6, Zeta-value at 6 m / s:,27 % degree of opening corresponds to an angle of 56,7 DN 65 PN 6, Zeta-value at 6 m / s:,57 % degree of opening corresponds to an angle of 57,8, 2 3 4 5 6 9 8 9 8, 2 3 4 5 6 DN 8 PN 6, Zeta-value at 6 m / s:,26 % degree of opening corresponds to an angle of 55, DN PN 6, Zeta-value at 6 m / s:,32 % degree of opening corresponds to an angle of 55,5, 2 3 4 5 6 9 8 9 8, 2 3 4 5 6 DN 25 PN 6, Zeta-value at 6 m / s:,6 % degree of opening corresponds to an angle of 57, DN PN 6 % degree of opening corresponds to an angle of 6,, 2 3 4 5 6 9 8 9 8,, 2 3 4 5 6 4
Zeta-values DN PN 6, Zeta-value at 6 m / s:,4 % degree of opening corresponds to an angle of 6, DN 2 PN 6, Zeta-value at 6 m / s:, % degree of opening corresponds to an angle of 66,,, 2 3 4 5 6 9 8 9 8, 2 3 4 5 6 DN PN 6, Zeta-value at 6 m / s:, % degree of opening corresponds to an angle of 66,, 2 3 4 5 6 9 8 Zeta Loss of pressure Dp Degree of opening Diagrams valid for cavitation free operation. 5
www.talis-group.com TALIS is the undisputed Number One for water transport and water flow control. TALIS has the best solutions available in the fields of water and energy management as well as for industrial and counal applications. We have numerous products for comprehensive solutions for the whole water cycle from hydrants, butterfly valves and knife gate valves through to needle valves. Our experience, innovative technology, global expertise and individual consultation processes form the basis for developing long-term solutions for the efficient treatment of the vitally important resource water. ERHARD GmbH & Co. KG Postfach 28 D-892 Heidenheim Meeboldstrasse 22 D-89522 Heidenheim Phone +49 732 3- Fax +49 732 3-49 E-Mail info@erhard.de Internet www.erhard.de Note: Specifications may be changed without notification at any time. Copyright: No copying without express written permission of ERHARD ERHARD is a Registered Trademark. 46247 EN (4/5)