Gas Pressure Regulator R105 Product information © 01.2023

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Table of contents Application, characteristics, technical data 4 Application 4 Characteristics 4 Types of models / options 4 Technical data 5 Structure and function 6 Installation example 6 Sectional view 7 KG* value and diaphragm assemblies 8 RE - Diaphragm assembly 8 Setpoint spring tables 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 Calculation of the required KG value 13 Device selection 13 Checking the gas velocities 13 Properties of gases 14 Order data...

Application, characteristics, technical data Application Gas pressure regulator (GPR), direct-acting (operating without auxiliary power), for systems acc. to DVGW Code of Practice G 491 (A) and G 600 (A) (TRGI) Particularly suitable for dynamic regulation sections (e.g. gas fireplaces, burner circuits, gas motor operation). 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) Integral pressure-tight model (IS)...

Technical data Type R105 Model Max. inlet pressure pu,max Nominal width Connection type DIN EN 1092 flanges PN 16 / ASME - B16.5 flanges Class 150 RF Material Housing / actuator housing/ control device housing DIN EN ISO 12944-2 without additional coatings an epoxy resin coating is recommended (see page13) Temperature range, Class 2 (operating/ambient temperature) Closing pressure zone group Function, strength, and tightness CE mark to PED/ PIN number The mechanical parts of the device do not have any potential ignition sources of their own and therefore do not fall within the scope of ATEX 95...

Structure and function The spring-loaded gas pressure regulator R105 has the function of keeping the outlet pressure of a gaseous medium constant within allowable limit values in the connected regulation section on the outlet side, independently of the effect of interferences, such as changes in the inlet pressure and/or in the gas tap. The gas pressure regulator is composed of the actuator housing and the “diaphragm assembly plus actuator”. The actuator for the diaphragm assembly can be produced in various valve seat diameters to suit different nominal widths. The gas flows through the actuator...

Sectional view Adjusting screw Diaphragm assembly Main diaphragm Measurement line port Actuator housing Actuator / spindle Valve plate Valve seat

KG* value and diaphragm assemblies R 105 Nominal width Diaphragm assembly Ø Valve seat Ø Connection type *) KG value for natural gas: ρn = 0.83 kg/m³, tu = 15°C RE - Diaphragm assembly Regulator type Nominal width Nominal width Outlet pressure ranges [mbar] Diaphragm assembly Outlet pressure range with high-pressure spindle HDS [mbar] (illustration with HDS on p. 12)

Diaphragm assembly setpoint spring table Spring data Specific command range Wds [mbar] * High-pressure spindle HDS required (illustration p. 12) Spring data Specific command range Wds [mbar] * High-pressure spindle HDS required (illustration p. 12) 9

Dimensions, connection, and weight Dimensional drawing Dismounting dimensions for springs Safety diaphragm

Dimensions and weight R 105 Nominal width SM safety diaphragm weight [kg] HDS weight [kg] Connection Example: R105/050/390 with HDS and safety diaphragm Weight (regulator + HDS + SM): 16 kg + 0.6 kg + 5 kg = 21.6 kg Dimensions (A + HDS + SM): 408 mm + 125 mm + 32.5 mm = 565.5 mm Connection of the measuring lines and breather lines Nominal width Diaphragm assembly Measurement line Breather line Connection* for: Tube 12 x 1.5 (thread G 3/8)

Types of models / Options Safety diaphragm Safety diaphragm In the model with safety diaphragm, the safety diaphragm is located above the main diaphragm. When the main diaphragm is damaged, the safety diaphragm makes contact with the top cover of the diaphragm assembly and limits any inadmissible escape of gas into the surrounding atmosphere to a maximum of 30l/h (air). (Option not available for hydrogen version H2) Noise reduction Noise reduction The noise reduction made of metallic foam reduces noise in the gas pressure regulator produced by the flow rate by up to -15 dB (±3 dB). RSD2 throttle...

Design Note All calculated pressures are absolute pressures. (p+1 bar) The required KG value for a gas pressure regulator is determined with the smallest inlet pressure or lowest pressure drop. Inlet pressure (bar) Outlet pressure (bar) Standard volumetric flow rate (Nm³/h) Calculation of the required KG value pd / pu > 0.5 KG value at a subcritical pressure ratio KG = Qn / pd⋅(pu-pd) pd / pu ≤ 0.5 KG value at a supercritical pressure ratio KG = 2∙Qn / pu For spring-loaded devices, a capacity reserve of 10-20% is recommended in order to comply with the accuracies given. Selected device Type R...

for natural gas (ρn = 0.83 kg/m³; t = 15°C) f - natural gas L conversion factor Gas f Hs,n Gas f Hs,n [kWh/m³] [kWh/m³] Acetylene 0.84 16.25 Sewage gas 0.84 Ammonia 1.04 4.83 Carbon monoxide 0.81 3.51 Butane 0.55 37.23 Carbon dioxide 0.65 Chlorine 0.51 - Air 0.80 Landfill gas approx. 0.80 Methane 1.08 11.06 Natural gas L 1.00 9.77 Propane 0.64 28.03 Natural gas H 1.03 11.45 Oxygen 0.76 Ethane 0.78 19.55 Sulphur dioxide 0.53 Ethylene 0.97 16.516 Nitrogen 0.81 Mine gas (30% CH4) 0.86 Hydrogen 3.04 13.43 Helium 2.15 -

Order data (In every selection group, only one option can be selected in each case) Example: Order selection Type R 105 DN - Nominal width Flange model PN 16 Class 150 RE - Diaphragm assembly D - Nozzle (valve seat diameter) High-pressure spindle without high-pressure spindle with high-pressure spindle Direction of flow Right (from left to right) Left (from right to left) Noise reduction without noise reduction with noise reduction Additional unit, diaphragm assembly without additional unit, diaphragm assembly Safety diaphragm Throttle valve without throttle valve with throttle valve Acceptance...