Motorised Butterfly Valve DMK Nominal Diameter Rp 3/4 - Rp 2

Transcription

1 Motorised Butterfly Valve DMK Nominal Diameter Rp / - Rp.0 Printed in Germany Rösler Druck Edition 0.0 Nr Technical description The DUNGS DMK motorised butterfly valve is an actuator without zero shut-off as per DIN 9, Sheet. Input-side male thread and output-side female thread enable a space-saving assembly directly on DUNGS multiple actuators, solenoid valves and other actuators: - Max. operating pressure: 0 mbar - Max. differential pressure: 00 mbar - Group R 0 as per DIN 9, Sheet. - Application-specific throat diameter selection of throttle valves - Standard actuator drives: operation time: 0 s for 9 or operation time: s for 9; other drives supplied on request - Reduced installation length by combination of female and male threads - Functional, rugged and maintenance-free - Low weight Application The DUNGS DMK motorised butterfly valve is used for regulating the gas supply on gas burners and gas equipment. The motorised butterfly valve can be used for gases of families,, and other neutral gaseous media. Does not contain any non-ferrous metals, suitable for gases of up to max. 0. vol.% H S, dry. Approval EC type test approval as per EC Gas Appliance Directive: DMK... CE-00 AP0 Approvals in other important gas consuming countries.

2 DMK Actuator without zero shut-off for regulating tasks. Prepared for mechanical and electromechanical actuator drives. Specifications of type DMK... Pipe thread as per ISO 7/ Max. differential pressure Max. difference pressure Pressure stage Actuator Gap volumetric flow in position closed () Torque Actuator angle Diameter of throat DN 0 R / / / Male thread at input Rp / / / Female thread at output 0 mbar ( kpa) 00 mbar (0 kpa) PN Actuator as per DIN 9, Sheet, Group R o see Diagram max. Ncm max mm Preferred diameter,,, 7 DMK mm Preferred diameter, 7, 9, mm Preferred diameter, 7, 9,,, DMK mm Preferred diameter,,, DMK mm Preferred diameter,,, Materials of gas-conveying parts Housing: Shaft: Seals: aluminium steel NBR Ambient temperature Installation position C to 70 C Use with actuator drive, type DMA P : any installation position Use with other actuator drives: refer to specifications of actuator drive Specifications of actuator drives Type DMA P, see Data Sheet.0

3 Functional description The DUNGS motorised butterfly valve is an automatic actuator driven by auxiliary energy. The electromechanical actuator drive determines the position of the valve. Partial load and full load setting of the valve are specified by adjusting the switching cams of the actuator drive. The acting time is specified by selecting the actuator drive. If the operating voltage (auxiliary energy) is interrupted, the actuator remains in its current position. Installation - When installing, refer to the flow direction ( arrow) on the housing. - Keep to the specified installation position. - Do not use actuator as lever when screwing unit in. Use suitable tools on housing. Electrical connection Cable entry via PG 9 cable threaded joint. Electrical connection using screw terminals in connector box of actuator drive. Grounding as specified by local regulations. Housing is not grounded via protective conductor of actuator drive. Perform leakage and functional tests after mounting. Direct contact between hardening masonry, concrete walls, floors and motorised butterfly valve is not permitted. Set pressure reference value on gas pressure regulator. Only perform load reduction via motorised butterfly valve. k v values of valves with preferred throat diameter Preferred diameter [mm] Valve position ø ø ø ø 7 ø 9 ø ø ø ø ø ø ø ø ø ø DMK DMK DMK Equipment selection The following values must be known for the DMK rating:. Maximum volumetric flow V max.. Pressure loss p at maximum volumetric flow.. Minimum volumetric flow V min.. Pressure loss p at minimum volumetric flow The throat diameter can be determined optionally using the k v value or the diagrams, and. Check whether the required minimum volumetric flow is attained in valve position. If the calculated or read-off value is below the specified minimum volumetric flow, the valve can be used. At smaller volumetric flows, the pressure loss of upstream equipment is reduced and the available p of the valve increases. Always select the valve with the largest p pressure loss ( p > 0 mbar) to achieve a good regulating behaviour. k v values for DMK motorised butterfly valve The DMK motorised butterfly valve is limited by the following parameters: Operating pressure p max. = 0 mbar Pressure loss p max. = 00 mbar For use in the area of subcritical flow condition, the following applies: p p V n = k v ρ n T V n [ m / h] volumetric flow, normal state p [bar] pressure loss via DMK p [bar] pressure downstream of DMK, absolute ρ n [kg /m ] standard density of gas T [K] gas temperature upstream of DMK, absolute

4 Flow diagram - DMK V min. valve position, valve closed ø ø ø ø7 ø9 ø ø ø ø ø ø ø ø ø ø Basis C, 0 mbar, trocken Based on C, 0 mbar, dry Base C, 0 mbar, sec Base C, 0 mbar, secco 0, 0, 0, 0, 0, 0,, /h] Luft / Air / Aria dv =,00 0, 0, 0, 0, 0,, Flow diagram DMK V max. valve position 9, valve open 00 0 DMK ø ø7 ø9 ø 0 0 Basis C, 0 mbar, trocken Based on C, 0 mbar, dry Base C, 0 mbar, sec Base C, 0 mbar, secco /h] Luft / Air / Aria dv =,

5 Flow diagram - DMK V max. valve position 9, valve open 00 ø ø ø ø7 DMK ø ø ø ø Basis C, 0 mbar, trocken Based on C, 0 mbar, dry Base C, 0 mbar, sec Base C, 0 mbar, secco /h] Luft / Air / Aria dv =, Flow diagram, DMK V max. valve position 9, valve open 00 ø ø7 ø9 ø ø ø DMK ø ø ø ø Basis C, 0 mbar, trocken Based on C, 0 mbar, dry Base C, 0 mbar, sec Base C, 0 mbar, secco /h] Luft / Air / Aria dv =,

6 Motorised Butterfly Valve DMK Dimensions[mm] Dimensions [mm] Actuator drive DMA P A 9 B 7 C D 70 D ø h ø h 7 0, DMK,, 7, 7 DMK 90 / DMK , PG 9 ± 0,, tief 99 C B A Motor 7 ø, DIN 9 Gr. Ro ID-Nr. CE-00Ap0 0, 99 ø Typ Rp/R ø [mm] Bestell-Nr. Typ Rp/R ø [mm] Bestell-Nr. / / / / DMK DMK DMK DMK / / / / 0 DMK DMK DMK DMK DMK DMK DMK DMK 07 9 / / / / / / We reserve the right to make any changes in the interest of technical progress. Head Offices and Factory Karl Dungs GmbH & Co. Siemensstraße -0 D-7 Urbach, Germany Telephone 9 (0)7--0 Telefax 9 (0)7-- Postal address Karl Dungs GmbH & Co. Postfach 9 D-7 Schorndorf, Germany info@dungs.com Internet