9.0 Systems For Domestic Water Installations

Transcription

1 9.0 Systems For Domestic Water Installations 9.0.1Equipment Catalogue Proportional Flow Dosing System For Liquid Dosing turbodos, DULCODOS metering systems protect pipework, fittings, and devices such as boilers, washing machines and dishwashers against corrosion and scale. Here, active substances such as silicate, phosphate or silicatephosphate mixtures are metered. These active substances form a protective layer in the pipework and reduce the corrosiveness and hardness deposits of the water: Silicate as corrosion inhibitor to prevent rust formation: "brownish water" in galvanised piping system, "pitting": needle-like holes in the piping. The applications include soft, corrosive waters with a high percentage of aggressive carbonic acid. The silicate acts to raise the ph value in the direction of the lime-carbonic acid equilibrium. Hydrolysis produces a silica gel which forms a thin protective layer in the pipework and fittings and thus prevents corrosion. Phosphate as ortho- and polyphosphate to prevent scale and corrosion in hard waters up to max. 20 CH (carbonate hardness). The hard-water salts such as calcium and magnesium ions responsible for scales are stabilised, i.e. these ions remain dissolved in the water and do not deposit as scale at the pipe walls. Overgrowing of the pipes is prevented and no scales deposit on the heating coils which dramatically reduce the efficiency. A thin, solid protective layer is formed. Mixtures containing silicate and phosphate for soft and medium-hard waters as corrosion and scale inhibitor. In order to maintain the protective layer, a continuous feed of the metering medium is required because otherwise this layer degrades within a few days. EXACTAPHOS The EXACTAPHOS metering solutions are matched to the metering output of the turbodos and DULCODOS systems. This guarantees that the percentages permissible according to the "German drinking water ordinance" of max. 40 mg/l SiO 2 silicate and/or 6.7 mg/l phosphate PO 4 (5 mg/l P 2 O 5 ) are complied with. Function of the systems The water flow causes the turbine meter or contact water meter to signal pulses with fixed pulse spacing corresponding to the flow rate to the metering pump. Each of these pulses result in a metering stroke of the metering pump, adding metering solution. The metering amount per stroke can be adjusted continuously between % using the stroke adjustment knob. Because of the very low response threshold and the short pulse spacing, a constant volume-proportional chemical metering is always maintained from minimum to maximum water flow rate and thus also guarantees the best process result. turbodos proportional flow metering system Consisting of a Beta metering pump, turbine meter, suction fitting with foot valve and 2-phase level switch with pre-alarm as protection against dry running und empty signal, metering valve and metering line. In the version "R" compact metering system, the metering pump is built onto the turbine meter. In the version "W" split metering system with wall bracket for mounting the metering pump. The turbine meter can be installed either vertically or horizontally. DULCODOS domestic Consisting of a ProMinent metering pump of the Beta series and gamma/ L with Pulse Control option for increasing or decreasing the incoming pulses, assembled on a stable, refillable metering tank with suction fitting and lockable screw cover as well as contact water meter. Manual or electronic agitators and further accessories can be installed. With the metering systems DULCODOS domestic, the specific metering output can be adapted to the individual requirements using the option Pulse Control, e.g. for chlorine metering in a domestic well water supply Equipment Catalogue

2 9.1 turbodos Proportional Flow Dosing Plant 9.1turboDOS Proportional Flow Dosing Plant turbodos Flow dosing system for adjustable chemical feed for the treatment of drinking water with chemicals such as EXACTAPHOS. Consisting of ProMinent Beta metering pump, flow meter, suction assembly with foot valve and float switch, dosing valve and discharge tubing. Version R ; compact dosing system. Dosing pump mounted horizontally onto flow meter (see fig. ). Version W ; split system with wall bracket for dosing pump. Pacing cable and 2 m PE discharge tubing. Optional flow meter mounting positions (see fig. pk_4_003). NG 10 R NG 10 W NG 20 R NG 20 W Flow meter connector* 1 1/4* 1 1/4* Connector thread G 1 1/2 A 1 1/2 A Length without thread mm Length with thread mm Response flow rate m 3 /h Lower operating limit m 3 /h Upper operating limit m 3 /h Dosing interval l Feed rate % ml/m Max. turbine operating pressure bar Max. dosing pump operating pressure bar Operating temperature C pressure loss at upper operating limit bar Flow rate at 0.2 bar pressure loss m 3 /h Electrical connection 230 V 50/60 Hz 230 V 50/60 Hz Power Uptake W Metering pump type BT4a 1602 PPE 2 BT4a 1005 PPE 2 * Connector width 1 1/4 with standard dimension threaded connector. Can be connected to smaller threaded connectors (see page 4). The threaded connector is not supplied as standard. pk_4_ Equipment Catalogue

3 9.1 turbodos Proportional Flow Dosing Plant turbodos Accessories Shipping weight kg NG 10 R compact dosing system NG 10 W split dosing system NG 20 R compact dosing system NG 20 W split dosing system Accessories not supplied as standard Threaded union set, brass with seal and 1 1/2" union nut. 2 connectors required. Flow meter connector DN 32 R 1 1/4 G 1 1/2 - (turbodos ) brass Flow meter connector DN 25 R 1 G 1 1/2 brass Flow meter connector DN 20 R 3/4 G 1 1/2 brass Materials Liquid end and valve polypropylene (PP) Dosing diaphragm EPDM with PTFE insert O-rings EPDM Valve balls ceramic Float switches PP Suction assembly flexible PVC Discharge tubing PE Flow meter housing brass Turbine PPE Shaft hard alloy Mounting sapphire pk_4_003 pk_1_ Equipment Catalogue

4 9.2 DULCODOS domestic Water Meter Controlled Dosing Plant 9.2DULCODOS domestic Water Meter Controlled Dosing Plant DULCODOS domestic Flow proportional flow dosing for potable and industrial water. Included in delivery: Contact water meter PN 16 - read-off - unions and seals. Metering tank made of transparent PE with litre scale and lockable screw cover constructed with ProMinent Beta and/or gamma/ L metering pump with Option Pulse Control for flow-proportional metering. With operating, advance warning and empty indication, mains leads with safety plug and 2 meter contact lead. Technical data Water treatment chemicals see chapter 7.4. Metering systems with Beta metering pump pk_4_004_1 Pump type Max. flow rate Max. pressure Tank size Connector width (KWM) Pulse rate Shipping weight m 3 /h bar l R l kg DN 10/16 BT4a1602NPB DN 10/ BT4a1602NPB DN 20/10 BT4a1005NPB / DN 20/ BT4a1005NPB / DN 30/10 BT4a1008NPB Max. temperature 45 C Electrical connection 230 V 10%, 50/60 Hz Feed rate ml/m Equipment Catalogue

5 9.2 DULCODOS domestic Water Meter Controlled Dosing Plant Metering systems with metering pump gamma/ L Pump type pk_4_004_2 Max. flow rate Max. pressure Tank size Connector width (KWM) Pulse rate Shipping weight m 3 /h bar l R l kg DN 10/16 GALa1602NPB DN 10/ GALa1602NPB DN 20/10 GALa1005NPB / DN 20/ GALa1005NPB / DN 30/10 GALa1008NPB Max. temperature 45 C Electrical connection V 10%, 50/60 Hz Feed rate ml/m 3, even higher concentrations possible at reduced flow Equipment Catalogue