SAFETY VALVE SV 422 for hot water HEAT Holding International GmbH

Hot water safety shut-off valve SV422    For installation upstream of gas heat exchangers as pressure safeguard for the entire heat circuit Situated at the inlet and outlet nozzles of the heating medium at the gas pressure-resistant heat exchanger Internal medium actuated with reliable triggering in case of pressure increase in the water system The SV422 reliably blocks only the damaged heat exchanger from the system in the event of leakage If there is only a minimal loss of water, the one reserve heat exchanger continues to function reliably There is no freezing of the reserve controlled...

Design in accordance with PED2014/68/EU, AD2000; with CE marking, DVGW approval Continuous application of ISO9001 with regularly audited quality system Preliminary examination/construction testing, material testing, non-destructive material testing in accordance with design standard Acceptance by experts such as TÜV, DVGW, etc. Control device with water stop Screen seal to repel water contamination Threaded bolts with certificate suitable for the pressure level ordered Remote transmission sensor in EEx(i) design Test and control device with connection ball valves, pressure gauges, etc. Flanges...

Triggering behaviour SV422 Heating circuit system pressure Pressure curve in the heat exchanger p3 Switching pressure Operating pressure Time Leakage Closing pressure of the control device Gas entry into the heating system Closing process of the actuator Opening pressure of the control device Pressure loss depending on the flow rate of the SV422 HEAT Holding International GmbH

Technical data Design pressure Ps Intermediate flange connection EN1092-1 DN25, DN50, DN80 > PN16, PN25, PN40, ANSI B16.5 Standard version RF, optional RTJ for class 600/900/1500 1”, 2”, 3” 4”, 6”, 8” > class 600RF, class 900RF, class 1500RF Housing: C-steel tenifer treated Interior parts: Stainless steel Seals: EPDM Control unit: stainless steel PED2014/68/EU, AD2000, DVGW/CE marking, EN10204 3.1, DVGW Design only similar to EN 14382 The SV422 device has no potential sources of ignition of its own when used as intended. Consequently, the WW-SSV does not fall within the scope of the ATEX Directive...

Dimensions in accordance with DN and PN – accessories such as sensors and test equipment are not included HEAT Holding International GmbH

Arrangement of the WW-SSV SV422 in the overall system Familiarisation with and consideration of HEATenergy’s SV422 operating and maintenance instructions are required for precise installation instructions. In addition, all appropriate national/customer regulations, as well as DVGW regulations G495 and G499, must be observed. The valves can usually be insulated, the position sensors must not be insulated. Heizraum Heating room Gas pressure control room Gas-Druckregelraum k Supply Vorlauf Return Rücklauf Hot water safety shut-off valve SV422 with control device Mating flanges according to ordered...

HEAT energy GmbH A-2362 Biedermannsdorf, Rheinboldtstraße 16 Tel.: +43 664 824 1616 [email protected] www.heatgroup.at HEAT energy Kft. H-8800 Nagykanizsa, Erdész u. 28. Tel.: +36 93 537 140 Fax: +36 93 537 142 [email protected] www.heatgroup.hu HEAT gaswärmetechnische Anlagen GmbH D-34119 Kassel, Querallee 41 Tel.: +49 561 288 56-0 Fax: +49 561 288 56-20 [email protected] www.heatgroup.de LOG Oiltools Kft. H-8800 Nagykanizsa, Erdész u. 28. Tel.: +36 93 537 140 Fax: +36 93 537 142 [email protected] www.logoiltools.hu HEAT Romania S.R.L. RO-547 185 Cristesti (Targu Mures) Strada...