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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 examples 7 Sectional view 8 (Valve) flow coefficient KG* and diaphragm assemblies 10 SSV setpoint spring table - control device 11 Regulator setpoint spring table 12 Dimensions, Connection, and Weight 13 Dimensional drawing 13 Dimensions and weight 15 Connection example 17 Gas pressure regulator RSP 254 with integrated SSV indirect-acting 18 Gas pressure regulator RSP 254 with integrated SSV indirect-acting Regulator...

Application, Characteristics, Technical Data Application Gas pressure regulator (GDR), indirect-acting (operating with auxiliary power), for systems acc. to DVGW - work sheet G 491 (A) and G 600 (A) (TRGI). Can be used as an equipment component on gas consumption facilities as defined in EC Directive EU/2016/426 Can be used for the gases defined in DVGW work sheet G 260 / G 262 and neutral non-aggressive gases. (other gases on request) Regulator with double-diaphragm system Model according to DIN EN 334 / 14382 Integral pressure-tight model (IS) Gas pressure regulator with or without integrated...

Technical data Gas pressure regulator RSP 254 / RSP 255 (with integrated SSV) RP 254 / RP 255 (without integrated SSV) Actuator model AS 254 / AS 255 (with integrated SSV) A 254 / A 255 (without integrated SSV) Safety shut-off valve (SAV) with MD control device (Wdsu 0 mbar - 70 mbar ; Wdso 35 mbar - 3000 mbar) with MD-R control device (Wdsu 24 mbar - 250 mbar ; Wdso 100 mbar - 3500 mbar) with HD control device (Wdsu 20 mbar - 940 mbar ; Wdso 2,200 mbar - 16,000 mbar) Regulator models Required pressure difference for master regulator Nominal width Actuator flange connection DIN EN 1092 - flanges...

Design and function of the gas pressure regulator (GPR) The gas pressure regulator RSP 254/255 has the function of keeping the outlet pressure of a regulation section downstream of a gas pressure regulator constant within specified limits, independently of changes in the gas tap or inlet pressure. The required auxiliary energy is obtained from the pressure gradient between the inlet pressure and outlet pressure of the gas pressure regulator. No external energy is required. The GPR consists of a regulator with regulating unit, optionally with connected upstream fine filter and bypass valve, and...

Preferred installation position The gas pressure regulators RSP 254 / 255 shall be installed in the pipeline preferably in horizontal position. For all nominal widths, the direction of flow is indicated by an arrow on the housing. Only after consultation with Medenus GmbH Note: Observe the following documents in relation to installation, start-up, and maintenance: • DVGW - work sheets G 491 and G 600 Operating and Maintenance Instructions RSP 254 / 255 Range for measuring points* (approx. 3x DN P2) Outlet RSP 255 shown with actuator AS 255 incl. switching device MD, MD-R, or HD and regulator...

Sectional view Actuator AS 255 Setting device Main diaphragm Bypass valve Actuator housing Valve seat Wdso up to 14 bar with control device MD, MD-R or HD-SAV Control device Inlet pressure Set pressure Outlet pressure Atmosphere

Sectional view Regulator R 70-10, R 70-20, R 70-100 R 70-10 R 70-20 Double diaphragm system Double diaphragm system Bypass setting device Setpoint spring Double diaphragm system Bypass setting device Setpoint spring Setpoint setting device Setpoint setting device R 70-100 with pneumatic 1:2 pressure converter for follow-up setpoint adjustment, for example, via I/P converter Bypass setting device I/P converter Druckübersetzer 20 cm² Bypass setting device Double diaphragm system Setpoint spring Setpoint spring Setpoint setting device Setpoint setting device 9

KG value and diaphragm assemblies (KG value for natural gas: d = 0.64 (ρn = 0.83 kg/m³), tu = 15° C) Diaphragm assembly Ø Valve seat Ø 17.5 mm Setting device is approved for a max. pressure differential of 0.5 bar.

SSV setpoint spring table - Control device direct-acting RSP 254: DN 25 - 100 / RSP 255: DN 50 - 80 small ball lock MD to Wds o 300 mbar Spring data Lower response pressure Upper response pressure Color Wds u Δpwu [RAL] [mbar] [mbar] wdso [mbar] Lower response pressure Upper response pressure wdso [mbar] Lower response pressure Upper response pressure wdso [mbar] RSP 254: DN 150 - 200 / RSP 255: DN 100 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...

Regulator setpoint spring table R70-100 Pd100 [mbar] Spring data Pressure of the auxiliary pressure stage of the follow-up setpoint (0-6 bar) Outlet pressure R70-100 Outlet pressure R70-20 Outlet pressure R70-10 with 1:2 follow-up setpoint adjustment Outlet pressure R70-10 Outlet pressure R70-10 with 1:1 follow-up setpoint adjustment *) The upper response pressure is rounded up to full tens, for example 251 mbar-> 260 mbar

Dimensions, Connection, and Weight Dimensional drawing of gas pressure regulator Gas pressure regulator RSP 255 consisting of: L2 I/P converter not included in the delivery Actuator AS 255 Regulator R 70-20/2 with I/P converter Gas pressure regulator RSP 255 consisting of: Gas pressure regulator RSP 255 consisting of:

Dimensional drawing of regulator R 70-20 R 70-20/2 with follow-up setpoint adjustment (1:2) Pressure range: 10 bar - 500 mbar

Dimensions and weight Gas Pressure Regulator Nominal width Actuator connection Regulator connection *) The dimensions depend on the lengths of the piping and may vary! 15

AS 254: Connection of the functional line and breather line Nominal width Setting device SSV control device direct-acting Setting pressure line / Return line Breather line Connection* for: tube 12 x 1.5 (thread G 1/4) Connection* for: Tube 12 x 1.5 (thread G 3/8) Connection* for: tube 12 x 1.5 (thread G 3/8) AS 255: Connection of the functional line and breather lines Nominal width Setting device SSV control device direct-acting Setting pressure line / Return line DN 050 DN 080 DN 100 Breather line Connection* for: tube 12 x 1.5 (thread G 1/4) Connection* for: Tube 12 x 1.5 (thread G 3/8) Connection*...