757 LE
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DOME PRESSURE REGULATOR SET 757 LE/S Complete solution, own-medium controlled  High performance dome-loaded pressure regulator set. For high and varying flows requiring maximum pressure stability. Features ●● Pilot Control Tube (PCT) One of the features enabling highly accurate control of outlet pressure ●● Balanced Seat Design (BSD) Further enabling control precision, high reliability and low maintenance For this we offer our Maintenance Set with original spare parts. Options ●● Lockable spindle cap ●● Maintenance Set ●● A complete solution, ready to use With integrated pilot pressure regulator, and stainless steel pressure gauges, completely assembled and tested Enabling autonomous operation (no separate gas supply required) Self-relieving design, but no gas is released to atmosphere ●● Simple to install and operate Removable spindle enables simple setting of the required outlet pressure Can be positioned at any angle / orientation For indoor and outdoor installation. unfilled version for oxygen Operation / Usage Ideal for process gas supply where pressure accuracy is required even when inlet pressures and flow rates are varying. High flow rates and outlet pressure accuracy are achieved, even when the difference between inlet and outlet pressures is small. Approvals Company certified according to ISO 9001, ISO 22000 and PED 2014/68/EU Module H CE-marked according to PED 2014/68/EU ATEX 2014/34/EU with ignition hazard analysis according to EN 1127-1, DIN EN 13463-1 and ZH1/200 Analysed for Food Safety per HACCP-Analysis Fulfils the requirements of EU Regulations (EC) 1935/2004, and (EC) 2023/2006 Fulfils the requirements of German Food and Feed (LFGB) Law, and is suitable for contact with food gases Designed for Oxygen Service in accordance with EIGA 13/20 and CGA G-4.4: Oxygen Pipeline and Piping Systems Cleaned for Oxygen Service in accordance with EIGA 33/18 and CGA G-4.1: Cleaning of Equipment for Oxygen Service Available upon request Certificates and test reports Other Dome types Maintenance Depending on application, moving wetted parts may need replacement every 1-3 years. Switchover systems / parallel supply systems Customer-specific / customised versions WITT-Gasetechnik GmbH & Co KG, Salinger Feld 4-8, D-58454 Witten

DOME PRESSURE REGULATOR SET 757 LE/S Technical data Inlet pressure Pilot pressure Outlet pressure Connections Kv-Value Outlet pressure 17.4 Coefficient of increase in pressure after closing R = 0.17 Temperature range Housing Stainless steel (1.4310) Stainless steel housing DIN EN ISO 5171 for O2, DIN EN 837-1 glycerine-filled for other gases with flange approx. 26 kg / 57 lb without flange approx. 17 kg / 37 lb Pressure gauge Weight approx. other materials / material combinations upon request Dimensions in mm DN 50/PN 40 197.6 other connections upon request version 2″ female 4x threads for...

DOME PRESSURE REGULATOR SET 757 LE/S SMART Complete solution, own-medium controlled, including smart features High performance dome-loaded pressure regulator set for inline installation, combined with high-tech sensor technology and electronic components. The dome pressure regulator 757LE/S Smart can signal, for example, pressures, temperatures and an indication of the flow rate. These signals can be used to optimize performance, safety and maintenance regimes. WITT dome pressure regulator technology is unique in the world as it offers maximum pressure constancy even at high and fluctuating...

DOME PRESSURE REGULATOR SET 757 LE/S SMART Technical data Display Outlet pressure Connections Kv-Value Cv-Value Coefficient as per DIN EN ISO 7291 Temperature range 17.4 Coefficient of increase in pressure after closing R = 0.17 Coefficient of unevenness I = 0.01 -30 °C to +50 °C -22 °F to +122 °F Brass Installation position 757LE/S Smart Stainless steel (1.4310) Non-flammable gases including O2 Flammable gases outside Ex Zone 24 V DC Application Power supply Protection class IP 44 Temperature ± 2 °C Pressure approx. 1.5% current gas flow - upon request M12, 4-pin plug Parameters / Accuracy...

DOME PRESSURE REGULATOR SET 757 LE/S Pressure control performance Pressure control performance examples (N2, 20 °C : apply conversion factor of x 0.8 for CO2) Flowrate [m /h], Pv = Inlet pressure [bar] 1 m3/h = 35.3 scfh 3 Flow capacity “envelope“ Outlet pressure in barabs Inlet pressure = 32 barabs Example: Inlet pressure: Outlet pressure: Max. Flow: Gas: individual graphs with your parameters upon request WITT-Gasetechnik GmbH & Co KG, Salinger Feld 4-8, D-58454 Witten, Tel. +49 (0)2302-8901-0, witt@wittgas.

DOME PRESSURE REGULATOR SET 757 LE/S Connections and options Maintenance Depending on application, moving wetted parts may need replacement every 1-3 years. For this we offer our Maintenance Set with original spare parts. The lockable spindle cap protects the dome pressure regulator from unauthorised or accidental adjustment. WITT-Gasetechnik GmbH & Co KG, Salinger Feld 4-8, D-58454 Witten, Tel. +49 (0)2302-8901-0, witt@wittgas.com