S104
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Safety Shut-Off Valve S 104 Product information © 01.2023

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Table of contents Application, characteristics, technical data 4 Application 4 Characteristics 4 Type of model (Options) 4 Technical data 5 Structure and function 6 Installation example 6 Sectional view 7 KG* value 8 SSV setpoint spring table - control device 9 Dimensions, connection, and weight 10 Dimensional drawing 10 Dimensions and weight 11 Connection of the measuring lines and breather lines 11 Types of models / Options 12 Design 13 Properties of gases 13 Order data 14 Notes 15 Contact 16 Observe the following publications in relation to ATTENTION installation, start-up and...

Application, characteristics, technical data Application Safety shut-off valve (SSV), direct-acting (operating without auxiliary power), for systems acc. to DVGW Code of Practice G 491 (A) and G 600 (A) (TRGI) Can be used as an equipment component on gas consumption facilities as defined in Regulation (EU) 2016/426. Can be used for the gases defined in DVGW Code of Practice G 260 / G 262 and neutral non-aggressive gases. (other gases on request) Characteristics • Integral pressure-tight version (IS) • High flow rate capacity • Open-air model Type of models / Options (see page 12) • • • • •...

Technical data Type Max. inlet pressure pu,max Nominal width Connection type Material Housing / actuator housing/ control device housing DIN EN 1092 PN 16 flanges ASME - B16.5 flanges Class 150 RF DIN EN ISO 12944-2 without additional coatings an epoxy resin coating is recommended (see page10) Temperature range, Class 2 (operating/ambient temperature) Function, strength, and tightness to DIN EN 14382 CE mark acc. to PED/ PIN number CE-0085-AQ0880 Ex protection The mechanical parts of the device do not have any potential ignition sources of their own and therefore do not fall within the...

Application, characteristics, technical data Structure and function The safety shut-off valve S 104 shuts off the gas flow when the outlet pressure in the regulating section exceeds or falls below a certain response pressure. To this end, the outlet pressure to be monitored is passed on to the SSV control device via a separate measurement line. As a function of the change in pressure, the diaphragm in the control device is raised or lowered. When the outlet pressure in the regulating section falls below the lower switch-off point or exceeds the upper switch-off point, the switch socket...

Sectional view Housing cover Actuator housing Valve seat Valve plate Ball detent Re-engagement unit Closing spring Impulse line Diaphragm Diaphragm plate Breather line Setting screw for lower response pressure Setting screw for upper response pressure Pulling knob

(KG value for natural gas: (ρn = 0.83 kg/m³), tu = 15°C) Nominal width Valve seat Ø

SSV setpoint spring table - control device S104: DN 25 - 125 small ball lock MD** to Wds o 300 mbar Spring data Lower response pressure Upper response pressure wdso [mbar] Lower response pressure wdso [mbar] Lower response pressure Upper response pressure wdso [mbar] Upper response pressure S104: DN 150 - 200 large ball lock MD** to Wds o 300 mbar Spring data Lower response pressure Upper response pressure wdso [mbar] Lower response pressure Upper response pressure wdso [mbar] Lower response pressure Upper response pressure wdso [mbar] *) Standard spring **) If the control device is set up...

Dimensions, connection, and weight Dimensional drawing

Dimensions and weight Nominal width Connection of the measuring lines and breather lines Bore Ø Nominal width Breather line Measurement line Connection* for: tube 12 x 1.5 (thread G 1/4) Breather line Measurement line Connection* for: tube 12 x 1.5 (thread G 3/8)

Types of models / Options BV breather valve The BV breather valve is used as for securing the installation room against inadmissible escape of gas from diaphragm comparator compartments of safety shut-off valves. In case of a defect, the impermissible escape of gas into the surrounding atmosphere is limited to a maximum of 30l/h (air). BV breather valve It also serves as a substitute for an expensive and complex installation of breather lines. (Option not available for hydrogen version H2) Reed contact / inductive transmitter Reed contacts and inductive transmitters are used to monitor the...

Design Device selection Selection of the SSVs from the SSV control device table (page 7) Note: Recommended upper SSV response pressure pds o < 500 mbar + pds MDR with FD 914 (440-770 mbar) AGo10 set to pds o = 700 mbar and FE 904 (110-150 mbar) AGu5 set to pds u= 130 mbar Note: When selecting springs, AGo and AGu must be observed. The possible minimum and maximum response pressures are calculated as follows: pdso min/max = pds o ∙ (1 ± AGo / 100) pdsu min/max ∙ (1 ± AGu / 100) pdso max = 700 ∙ (1 + 10 / 100) = 770 mbar pdso min = 700 ∙ (1 - 10 / 100) = 630 mbar pdsu max = 130 ∙ (1 + 5 /...

Order data Example: Order selection Type S104 DN - Nominal width Flange model PN 16 Class 150 SSV with control device MD with control device MD-R SSV functional class A B Direction of flow Right (from left to right) Left (from right to left) SSV valve accessories without SSV valve accessories Breather valve Electrical position indicator, SSV “Closed” without electrical position indicator with ... , via proximity switch with ... , via Reed contact SSV release without release with manual release with electromagnetic remote release, when power is supplied with electromagnetic remote release,...

Contact Management ALEXANDER CHRISTIANI Technical Inside Sales Department MINDAUGAS PECKAITIS Phone: Mail: Head of Sales & Marketing FRANZ FEICHTNER Inside Sales Department SEBASTIAN HUCKESTEIN Head of Inside Sales Department MANUEL SCHEPP Inside Sales Department STEFANIE MÜLLER If you want to know more about solutions from MEDENUS for the gas industry, please contact your local contact person or go to our internet site at www.medenus.de Trade representation worldwide medenus.de/de/kontakt.html Gas-Druckregeltechnik GmbH Im Langen Feld 3 D-57462 Olpe Phone: +49 (0)2761 82788-0 Fax: +49...