3-PORT SEAT VALVES PN16 WITH EXTERNALLY THREADED CONNECTIONS STAZ-16, STBZ-16, STCZ-53 DATASHEET

Transcription

1 -PORT SEAT VALVES PN WITH EXTERNALLY THREADED CONNECTIONS STAZ-, STBZ-, STCZ- DATASHEET In small or medium-sized heating, ventilating and air conditioning plants as a control or safety shutoff valve. For closed circuits only. External thread, PN in accordance with ISO 78 Valve body bronze CC9K (Rg) DN... DN0 mm (½...½ ) Kvs... m³/h Nominal stroke. mm Manual adjustment by means of mounted knob For actuator STAZ-, STBZ- STCZ-0 Fittings can be delivered separately Media temperature: C STCZ- Type reference DN K vs S v Fitting sets Actuators STAZ-, STBZ-, STCZ-0 [m³/h] aducergods p max [kpa] p s [kpa] cccc=000; VXG >0 ALG cccc=000; VXG cccc=000; VXG cccc=000; VXG.- cccc=00; VXG.-.. >00 cccc=00; VXG.-.. cccc=000; VXG.- cccc=00; VXG ALG0 cccc=000; VXG.-0 0 ALG 7 cccc=00; VXG.- ALG 0 0 cccc=00; VXG.0-0 ALG0 ) If noise is permitted, the same values apply as for mixing. DN = Nominal size K vs S v k vr = Nominal flow rate of cold water ( 0 C) through the fully open valve (H 00 ) by a differential pressure of 00 kpa ( bar) = Rangeability kvs/kvr = Smallest kv value, at which the flow characteristic tolerances can still be maintained, by a differential pressure of 00 kpa ( bar) p max = Max. permissible differential pressure across valve s control path, valid for the entire actuating range of the motorized valve p s = Max. permissible differential pressure at which the motorized valve will close securely against the pressure (close off pressure)

2 Datasheet VALVE CROSS SECTION A AB Guided parabolic plug (from DN) which is attached to the valve stem. The seat is fitted in the through-port and attached directly to the valve body in the bypass. From DN, the seat in the through-port is attached directly to the valve body and fitted to the ring in the bypass. B FLOW DIAGRAM p v00 [bar] V 00 [m³/h] , 0, 0, 0, 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0 DN - k vs , , - -, -, - 0, - - 0, 0, 0, -,8, 8,,8,8,,7,, 0, 0,7 0, 0, 0,0 0,0 0,0 0,07 0,0 0,0 Δp vmax = Maximum permissible differential pressure across the valve (mixing: port A - AB, B - AB), valid for the entire actuating range of the motorized valve Δp v00 = Differential pressure across the fully open valve and the valve s control path A AB, B - AB by a volume flow V 00. V 00 = Volume flow through the fully open valve (H 00 ). m³/h= 78 l/s water at 0 C 00 kpa= bar 0 mwc 0,0 0,008 0,0 0, p max V 00 [l/s] p v00 [kpa]

3 Datasheet VALVE CHARACTERISTICS MAINTENANCE Flow k Flow v /k v / k vs vs 0, 0 B B - AB AB A - AB 0 0, Stroke Stroke H/HH 00 / H 00 Valve flow characteristic: Through-port: linear as per VDI/VDE7 Bypass: linear as per VDI/VDE7 Mixing: Flow from port A and port B to port AB Diverting: Flow from port AB to port A and port B Port A: Variable flow Port B: Bypass (variable flow) Port AB: Constant flow Use the three-port valve primarily as a mixing valve WORKING PRESSURE AND TEMPERATURE Working pressure [bar] (bar) Working pressure and medium temperature staged as per ISO 700. Current local legislation must be observed. D0 Working temperature ( C) [ C] DISPOSAL Before disposal the valve must be dismantled and separated into its various constituent materials. Legislation may demand special handling of certain components, or it may be sensible from a ecological point of view. Current local legislation must be observed. FUNCTIONAL DATA Important! The valves are maintenance free. The stem sealing gland cannot be exchanged. In the case of leakage, the entire valve must be replaced. Leakage rate 0 0.0% of kvs value to DIN EN 9 Permissible media Allowable mounting positions Chilled water, hot water, water with frost temperature. Recommendation: Water treatment per VDI 0. COMMISSIONING Important! Commission the valve only if the actuator has been properly mounted. Valve stem retracts: Throughport A AB opens, bypass B closes. Valve stem extends: Throughport A AB closes, bypass B opens.

4 Datasheet INDUSTRY STANDARDS Pressure Equipment Directive Pressure Accessories DGR 0/8/EU Range: Article, para. Definition: Article, para. Fluid group Without CE-marking as per article, section (sound engineering practice) Environmental compatibility Environmental Declaration CE Een ) contains data on environmental compatible product design and assessment (RoHS compliance, compositions, packaging, environmental benifits and disposal). MATERIALS Valve housing Seat in the through-port Seat in the bypass Plug Sealing gland Gland materials Bronze CC9K (Rg) Stainless steel, bronze Rg or brass Bronze Rg or brass Stainless steel or brass Brass EPDM O rings DIMENSIONS AND WEIGHT External thread connections G B to ISO 8/ Actuator connection G¾ DN = H = H = Nominal size Total actuator height plus minimum distance to the wall or the ceiling for mounting, connection, operation, service, etc. Dimension from the pipe centre to install the actuator. H = Pipe centre to upper edge of manual adjustment button, valve in «closed» position. STCZ- Type reference DN B G L L L H H H Weight (mm) (inch) (mm) (mm) (mm) (mm) (mm) STCZ-0 (kg) cccc=000; VXG G B > 0. cccc=000; cccc=000; cccc=000; VXG.-0. VXG.-0. VXG.- cccc=00; VXG cccc=00; VXG.-. cccc=000; VXG cccc=00; VXG G ¼B 8 78 > cccc=000; VXG.-0 G ½B >8.0 cccc=00; VXG.- G B >89.7 cccc=00; VXG.0-0 G ¼B >9.9

5 Datasheet SCREWED FITTINGS Type/Stock No. For valve type G [inch] Rp [inch] ALG VXG... G Rp ½ ALG0 VXG.0.. G ¼ Rp ¾ ALG VXG.. G ½ Rp ALG VXG... G Rp ¼ ALG0 VXG.0.. G ¼ Rp ½ On valve side: cylindrical thread to ISO 8-. On pipe side: with cylindrical thread to ISO 7-.