PIETRO FIORENTINI Reflux 819 Technical Manual
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PIETRO FIORENTINI Reflux 819 Technical Manual

Pressure regulator
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PRESSURE REGULATOR
REFLUX 819
TECHNICAL MANUAL MT050
INSTALLATION, COMMISSIONING AND MAINTENANCE INSTRUCTIONS

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  • Page 1 PRESSURE REGULATOR REFLUX 819 TECHNICAL MANUAL MT050 INSTALLATION, COMMISSIONING AND MAINTENANCE INSTRUCTIONS...
  • Page 2 TECHNICAL MANUAL MT050 R14/A 204/A PILOT FEED OUTLET PRESSURE INLET PRESSURE REFLUX 819 Issue january 2021...
  • Page 3 TECHNICAL MANUAL MT050...
  • Page 4 TECHNICAL MANUAL MT050...
  • Page 5 TECHNICAL MANUAL MT050 PRECAUTIONS GENERAL PRECAUTIONS - The apparatus described in this manual is a device subject to pressure installed in systems under pressure; - the apparatus in question is normally installed in systems for transporting flammable gases (natural gas, for example).
  • Page 6 (gas/air) inside the piping must be considered. CONFORMITY TO DIRECTIVE 2014/68/EU Pressure regulators series Reflux 819 are classified as fail close regulator according to the standard EN 334 therefore they are categorized as safety accessories acording to directive 2014/68/EU.

  • Page 7: Table Of Contents

    REFLUX 819 REGULATOR MAINTENANCE PROCEDURE ........

  • Page 9: Introduction

    MAIN FEATURES The Reflux 819 pressure regulator is a regulator of the piloted type for medium and high pressures. The Reflux 819 is a fail close type regulator and therefore closes in the event of: - rupture of the main diaphragm;...
  • Page 10 TECHNICAL MANUAL MT050 Connections to be made by the customer Ref. No. for the connections Fig. 1 The set-point can be changed by turning the adjustment screw 10; clockwise rotation increases Pm and therefore the regulated pressure, Pa; the opposite occurs when the ring is turned anticlockwise. If, for example, the downstream pressure, Pa, drops during operation (because of an increase in the requested flow rate or a drop in the upstream pressure) an imbalance occurs in the mobile assembly 15 of the pilot, which is displaced to increase the opening of the obturator 17.
  • Page 11 TECHNICAL MANUAL MT050 Vice versa, when the regulated pressure begins to increase, the force it exerts on the diaphragm 16 of the pilot moves the mobile assembly 15 displacing the obturator 17, towards the closed position. The pressure, Pm, then drops because of the transfer between the chambers E and D through the orifice 21, and the force exerted by the spring 54 causes the downward dis- placement of the obturator 5, to restore the regulated pressure to the set-point.

  • Page 12: Setting Springs

    TECHNICAL MANUAL MT050 SETTING SPRINGS The Reflux 819 regulator uses the 204/A, 205/A, and 207/A pilots. The regulation range of the different pilots is given in the tables below. Tab. 1 Pilot 204/A, 204/A/1 Code Colour Setting range in bar...

  • Page 13: Installation

    TECHNICAL MANUAL MT050 INSTALLATION GENERAL Pressure regulator does not require any supplementary upstream safety accessory for protection against overpressure compared with its design pressure PS, when upstream reducing station is sized for a max downstream incidental pressure MIPd ≤ 1,1 PS. Before installing the regulator it is necessary to ensure that: - the regulator can be inserted in the space provided and that subsequent maintenance operations will be sufficiently practicable;...
  • Page 14 TECHNICAL MANUAL MT050 TAB. 4 CONNECTING THE APPARATUSES The connections between the apparatus and the main piping must be made using stainless steel pipe with minimum internal diameter of 8 mm. IN-LINE INSTALLATION Sensing line Control pressure gauge Regulator Downstream connection Bleed clock On/Off valve INSTALLATION AT RIGHT ANGELS...

  • Page 15: Accessories

    TECHNICAL MANUAL MT050 TAB. 5 DETAIL OF MULTIPLE TAKE - OFF WITH OF THE IMPULSE TAKE - OFF REFERENCE NUMBERS 1 and 2 Connect to regulators heads 3 and 4 Connect to pilots 5 and 6 Connect to accelerator and slam-shut The regulator must be installed in the line with the arrow on the body pointing in the gas flow direction.

  • Page 16: Direct Installation On The Line

    TECHNICAL MANUAL MT050 Obviously the quantity of gas released depends on the extent of the overpressure with respect to the set-point. The different models of relief valve available are all based on the same operating principle which is illustrated below with reference to the valve VS/AM 56 (fig.

  • Page 17: Installation With On/Off Valve

    Fig. 6 ACCELERATOR An accelerator (fig. 7) is installed on the PM/819 icorporated monitor and on the REFLUX 819 regulator (use as in-line monitor) to speed up their intervention in the event of failure of the active regulator (racommended when used safety accessory according to Directive 2014/68/EU).

  • Page 18: Modularity

    This is a device (fig. 8) which immediately blocks the gas flow if, following some kind of failure, the downstream pressure reaches the set-point for its intervention, or is operated manually. On the REFLUX 819 regulator, it is possible to have the SB/82 slam-shut incorporated both with the service regu- lator and on the one functioning as in-line monitor.

  • Page 19: Sb/82 Slam-Shut Operation

    TECHNICAL MANUAL MT050 4.2.1 SB/82 SLAM-SHUT OPERATION (FIG. 9) The SB/82 slam-shut device (see fig. 9) consists of an obturator A, a releasing lever system, a control head B and a resetting system which is controlled manually by the lever C. The pressure in the circuit to control acts on the diaphragm in the control head B.
  • Page 20 TECHNICAL MANUAL MT050 CONTROL DEVICE Mod. 106 - 107 - 108 - 109 Mod. 102 - 103 - 104 - 105 Fig. 10 SLAM-SHUT CONTROL HEADS MOD. 102 -106 MOD. 103 -106 MOD. 104 -107 MOD. 105-108 - 109 Fig. 11...

  • Page 21: Sb/82 Slam-Shut Setting Springs

    TECHNICAL MANUAL MT050 4.2.2 TAB. 7 SB/82 SLAM-SHUT SETTING SPRINGS SETTING RANGE in bar 104- 105- Spring characteristics Code Colour De Lo bar/min bar/max bar/min bar/max bar/min bar/max bar/min bar/max 1 2700565 WHITE 2 2700314 YELLOW 1,3 13 15 0,04÷0,1 0,2÷0,5 3 2700345 ORANGE...

  • Page 22: Incorporated Hb/97 Slam-Shut Valve

    This is a device (fig.12) which immediately blocks the gas flow if, following some kind of failure, the downstream pressure reaches the set-point for its intervention, or is operated manually. On the Reflux 819 regulator, it is possible to have the HB/97 slam-shut incorporated both with the service regulator or on the one functioning as in-line monitor.

  • Page 23: Hb/97 Slam-Shut Operation

    TECHNICAL MANUAL MT050 4.3.1 HB/97 SLAM-SHUT OPERATION (FIG. 13) The cut-off device consist principally of the following parts: • on/off valve (pos. 12); • single action pneumatic actuator (pos. 11); • line-off device (from pos.1 until pos. 10); When there is no pressure, the valve obturator is held in the closed position by the spring, (pos. 13), and rests on the valve seat.
  • Page 24 TECHNICAL MANUAL MT050 CONTROL DEVICE Mod. 103 - 104 - 105 Mod. 105/92 Fig. 14 SLAM-SHUT CONTROL HEADS Mod. 103 Mod. 104 - 105 Fig. 15...

  • Page 25: Hb/97 Slam-Shut Setting Springs

    TECHNICAL MANUAL MT050 4.3.2 TAB. 8 HB/97 SLAM-SHUT SETTING SPRINGS SETTING RANGE in bar Spring characteristics SH1190/103 SH1190/104 SH1190/105 SH1190/105/92 De Lo d bar/min bar/max bar/min bar/max bar/min bar/max bar/min bar/max Code Colour 0.4 ÷ 1 1 2700513 8.5 10.5 2 2700713 GREEN 2.3 8.5 10.5...

  • Page 26: Monitor

    The monitor is an emergency regulator which comes into operation to replace the service regulator if for any reason the latter permits the down-line pressure to rise up to the value set for its intervention. When pressure regulator Reflux 819 or incorporated monitor PM/819 are used as monitor, to increase response time an accelerato is installed.

  • Page 27: In-Line Monitor

    TECHNICAL MANUAL MT050 4.4.2 IN-LINE MONITOR With this kind of application, the emergency regulator is installed up-line from the service one (fig.17 and 18). Fig. 17 Heating system for pilot system Connection to be made by the customer Connection without heat exchanger in the pilot supply Fig.

  • Page 28: Start Up

    TECHNICAL MANUAL MT050 START UP GENERAL After installation, check that the inlet/output on-off valves, any by-pass and the bleed cock are closed. Before starting up, checking is recommended to ascertain that the conditions of use are in conformity with the specifications of the equipment.

  • Page 29: Gas Input, Control Of External Tightness And Setting

    TECHNICAL MANUAL MT050 The list of symbols used and their meanings are listed below: = According to Directive PED Pemax= maximum inlet operating pressure of the apparatus bpe= range of variability of the inlet pressure of the pressure regulator in normal operating conditions PS= maximum pressure which can be supported by the structure of the body of the apparatus in safety conditions Wa= range of setting of the pressure regulator/pilot/pre-regulator which can be obtained using the parts and the setting spring fitted at the moment of testing (without changing any components of the apparatus, that is).

  • Page 30: Comissioning The Regulator

    TECHNICAL MANUAL MT050 In installations consisting of two lines, we suggest commissioning one line at a time, starting from the one with the lower set-point, known as the “reserve” line. The set-points of the apparatuses in this line will obviously deviate from those specified in the tables 9 and 10.

  • Page 31: Commissioning The Regulator With Incorporated Sb/82 Slam-Shut

    TECHNICAL MANUAL MT050 COMMISSIONING THE REGULATOR WITH INCORPORATED SB/82 SLAM-SHUT (FIG. 22) If there is also a relief valve in the line, refer to par. 3.1 to check it. Fig. 22 Check and adjust the intervention of the slam-shut 7 as follows: A) For slam-shuts connected to the downstream piping by a three-way deviator push valve 11, proceed as follows (fig.
  • Page 32 TECHNICAL MANUAL MT050 Rest position (A e B in communication) Controll position (A e C in communication) Chamber with controlled pressure Safety device Room with pressure to be checked Fig. 23 B) On devices without the "push" valve (fig. 24) we recommend separately connecting the control head to a controlled auxiliary pressure and repeat the operations described above.
  • Page 33 10) It is recommended check that the flow of the line stops when the slam-shut is tripped manually. Setting ofon-line apparatuses consistings Tab. 9 of regulator REFLUX 819 + Slam-shut + relief valve Regulator set-point Set-point Set-point...

  • Page 34: Commissioning The Regulator With Incorporated Pm/819 Monitor And Accelerating Valve

    TECHNICAL MANUAL MT050 COMMISSIONING THE REGULATOR WITH INCORPORATED PM/819 MONITOR AND ACCELERATING VALVE (FIG. 25) If there is also a relief valve in the line, refer to par. 3.1 to check it. Fig. 25/A Fig. 25 1) Partially open the bleed cock 6. 2) Very slowly open the inlet on/off valve V1.

  • Page 35: Commissioning The Regulator Plus Reflux 819 In-Line Monitor With Incorporated

    TECHNICAL MANUAL MT050 COMMISSIONING THE REGULATOR PLUS REFLUX 819 IN-LINE MONITOR WITH SB/82 SLAM-SHUT VALVE (FIG. 26) If there is also a relief valve in the line, refer to par. 3.1 to check it. Fig. 26 Check and adjust the intervention of the slam-shut 7 as follows: A) For slam-shuts connected to the downstream piping by a three-way deviator push valve 11, proceed as follows (fig.
  • Page 36 7) Reduce the setting of the pilot 3 to the selected working value for the service regulator. 8) Check that the REFLUX 819 monitor is fully open by controlling the position of the stroke indicator through the window.

  • Page 37: Trouble-Shooting

    TECHNICAL MANUAL MT050 TROUBLE-SHOOTING The problems of various kinds which could arise over time are highlighted below. They derive from phenomena associated with the conditions of the gas as well, of course, as the natural ageing and wear of the materials. It must be remembered that all operations on the apparatuses must be carried out by highly qualified personnel with appropriate knowledge of the subject.
  • Page 38 TECHNICAL MANUAL MT050 PROBLEM POSSIBLE CAUSES APPARATUS REMEDY Reinforced gasket [7] damaged Replace Replace Obturator guide ring [35] damaged Tightness failure Q=0 REGULATOR (Fig. 27) Ice formation between the seat and the plug Increase the gas inlet tem. to the regulator Diaphragm [20] ruptured R14/A...

  • Page 39: Sb/82 Slam-Shut

    TECHNICAL MANUAL MT050 TAB. 12 SB/82 SLAM-SHUT (FIG. 35) PROBLEM POSSIBLE CAUSES REMEDY Slam-shut obturator does not close Diaphragm [4] in sensing device broken Change diaphragm Seal of obturator [40] deteriorated Change seal Leakage from slam-shut obturator Seat of obturator deteriorated Change the seat Seal by-pass [19] deteriorated Change seal...

  • Page 40: Maintenance

    TECHNICAL MANUAL MT050 MAINTENANCE GENERAL Periodical inspection and maintenance shall be carried out according to the regulations in force (kind and frequencies). Before carrying out any operation it is important to ascertain that the regulator has been cut off both upstream the regulator and the on/off valves.

  • Page 41: Reflux 819 Regulator Maintenance Procedure

    TECHNICAL MANUAL MT050 REFLUX 819 REGULATOR MAINTENANCE PROCEDURE DN: 1” -2” VERSION DN: 6” ÷ 10” VERSION DN: 3” - 4” Fig. 27...
  • Page 42 TECHNICAL MANUAL MT050 204/A + R14/A PILOT DOWNSTREAM INLET PRESSURE PILOT FEED Fig. 28...
  • Page 43 TECHNICAL MANUAL MT050 Procedure for disassembing, completely changing the spare parts, and reassembling of REFLUX 819 pressure regulator with 204/A + R14/A pilot (PREVENTATIVE PROGRAMMED MAINTENANCE) PRELIMINARY OPERATIONS Put the regulator into conditions of safety; Ensure that the upstream and downstream pressures are 0.
  • Page 44 TECHNICAL MANUAL MT050 REASSEMBLING THE REGULATOR SERVOMOTOR UNIT Remember that the O-rings and the sliding mech-anical parts (rods, etc.) must be lightly lubricated, before reassembly, with a fine layer of silicone grease, while static parts require grease to make them softer but mainly to hold them in their slots: 19) Reassemble the guide rod, pos.
  • Page 45 TECHNICAL MANUAL MT050 REASSEMBLING THE REGULATOR REGULATION UNIT Remember that the O-rings and the sliding mechanical parts (rods, etc.) must be lightly lubricated, before reassembly, with a fine layer of silicone grease, while static parts require grease to make them softer but mainly to hold them in their slots: 42) Reassemble the reinforced gaskets, pos.
  • Page 46 TECHNICAL MANUAL MT050 REASSEMBLING THE PILOT 204/A 59) On the pilot body , reassemble the shaft of the valve seat , putting the diaphragm support between them. 60) Screw the lock unit 61) Reassemble the bottom diaphragm , the protection disc and screw in the pilot lock nut 62) Insert the pilot obturator , the spring...

  • Page 47: Pm/819 Monitor Maintenance Procedure

    TECHNICAL MANUAL MT050 PM/819 MONITOR MAINTENANCE PROCEDURE Fig. 29...
  • Page 48 TECHNICAL MANUAL MT050 VERSIONS Fig. 29/A...
  • Page 49 TECHNICAL MANUAL MT050 PM/819 MONITOR (FIG. 29) Disconnect the connection pipes between the regulator and monitor and the respective pilot units, and between the latter and the downstream pressure take-offs. Remove the screws which secure the reduction assembly of the monitor to the body, making sure that the weight of the reduction assembly itself can be sustained.

  • Page 50: Db/819 Silencer Maintenance Procedure

    TECHNICAL MANUAL MT050 DB/819 SILENCER MAINTENANCE PROCEDURE Fig. 30...
  • Page 51 TECHNICAL MANUAL MT050 DB/819 SILENCER (FIG. 30) Slacken and remove the screws, pos. , and detach the motorization head from the main body. Unscrew the eyebolts und nuts, pos. , and raise the flange, pos. From the sleeve, pos. , remove the complete grill, pos. , the reinforced gasket, pos.

  • Page 52: Sb/82 Slam-Shut Device Maintenance Procedure

    TECHNICAL MANUAL MT050 SB/82 SLAM-SHUT DEVICE MAINTENANCE PROCEDURE Fig. 31...
  • Page 53 TECHNICAL MANUAL MT050 MOD. 102 -106 MOD. 103 -106 MOD. 104 -107 MOD. 105-108 - 109 Fig. 32 SB/82 SLAM-SHUT (FIG. 31) Check that the slam-shut is in the closed position. Disconnect the pipe between the downstream sensing line take-off and the head of the slam-shut pressure switch.

  • Page 54: Final Operation

    TECHNICAL MANUAL MT050 RE-ASSEMBLY 12) Fit the cover, pos. , and fix the screws, pos. on the pressure switch device. 13) Put back the shaft guide, pos. and fix with the retaining ring, pos. 14) Put back the spring, pos. and the ring, pos.
  • Page 55 TECHNICAL MANUAL MT050 Tab. 13 MAINTENANCE WRECHES FOR REFLUX 819 PRESSURE REGULATORS WITH 204/A AND R14/A PILOT Combination spanner Adjustable spanner Compass pin wrench Box spanner Hexagon or allen key Hexagonal T key Hexagonal socket T wrench Phillips screwdriver Flat head screwdriver...
  • Page 56 TECHNICAL MANUAL MT050 Tab. 14 MAINTENANCE WRENCHES FOR REFLUX 819 PRESSURE REGULATORS WITH 204/A AND R14/A PILOT Combination spanner Adjustable spanner Compass pin wrench Box spanner Hexagon or allen key Hexagonal T key Hexagonal socket T wrench Phillips screwdriver Flat head screwdriver...

  • Page 57: Weight Of The Components

    TECHNICAL MANUAL MT050 WEIGHT OF THE COMPONENTS TAB. 15 WEIGHT OF THE COMPONENTS IN KG 1” 2” 3” 4” 6” 8” 10” 11,100 11,100 21,900 21,900 59,300 59,300 124,500 0,250 0,250 0,350 0,350 0,825 0,825 1,560 2,700 2,700 4,100 4,100 11,500 11,500 44,000 19,900 19,900 0,250 0,250...

  • Page 58: List Of Recommended Spare Parts

    TECHNICAL MANUAL MT050 10.0 LIST OF RECOMMENDED SPARE PARTS...
  • Page 59 TECHNICAL MANUAL MT050 REFLUX 819 PRESSURE REGULATOR DN: 1” - 2”...
  • Page 60 TECHNICAL MANUAL MT050 VERSIONS VERSION VERSION DN: 10” DN: 6” ÷ 10” VERSION VERSION DN: 3” - 4”- 10” DN: 6” - 8” VERSION VERSION DN: 3” - 4” DN: 6” ÷ 10”...
  • Page 61 TECHNICAL MANUAL MT050 N. OF PIECES 1” ÷ 4” 6” 8” 10” POS. DESCRIPTION Reinforced gasket O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring Diaphragm Guide ring Guide ring...
  • Page 62 TECHNICAL MANUAL MT050 DB/819 SILENCER DN: 1” ÷ 6”...
  • Page 63 TECHNICAL MANUAL MT050 VERSIONS VERSION VERSION DN: 10” DN: 8” N. OF PIECES 1” ÷ 4” 6” 8” 10” POS. DESCRIPTION Gum gasket Gum gasket O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring Metal gasket DB 819 N.
  • Page 64 TECHNICAL MANUAL MT050 PM/819 MONITOR DN: 2”...
  • Page 65 TECHNICAL MANUAL MT050 VERSIONS VERSION VERSION DN: 1” DN: 10” VERSION VERSION DN: 3” - 4” DN: 6” ÷ 10” VERSION DN: 6” ÷ 10”...
  • Page 66 TECHNICAL MANUAL MT050 N. OF PIECES 1” ÷ 4” 6” - 8” 10” POS. DESCRIPTION O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring Diaphragm Guide ring O. Ring O.
  • Page 67 TECHNICAL MANUAL MT050 … + SB/82 SLAM-SHUT DN: 2” VERSIONS VERSION VERSION DN: 3” - 4” - 6” - 8” DN: 1”...
  • Page 68 TECHNICAL MANUAL MT050 VERSIONS VERSION DN: 4” - 6” - 8” VERSION DN: 10”...
  • Page 69 TECHNICAL MANUAL MT050 VERSIONS SECTION A - A VERSION VERSION DN: 1”÷ 4” DN: 1” ÷ 4” SECTION B - B VERSION VERSION DN: 6” - 8” - 10” DN: 6” - 8” - 10”...
  • Page 70 TECHNICAL MANUAL MT050 CONTROL DEVICE Mod.: 102 - 103 - 104 - 105 Mod.: 106 - 107 - 108 - 109...
  • Page 71 TECHNICAL MANUAL MT050 CONTROL HEADS Mod.: 102-106 Mod.: 103-106 Mod.: 104-107 Mod.: 105-108...
  • Page 72 TECHNICAL MANUAL MT050 N. OF PIECES 1” ” ÷ 3” 4” ÷ 8” 10” POS. DESCRIPTION Reinforced gasket Guide ring Guide ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring MOD. 102-103-104-105-106-107-108-109 N. OF PIECES POS. DESCRIPTION O.
  • Page 73 TECHNICAL MANUAL MT050 HB/97 SLAM-SHUT DEVICE DN: 4”...
  • Page 74 TECHNICAL MANUAL MT050 VERSION DN: 6” - 8” - 10” N. OF PIECES 4” 6” 8” 10” POS. DESCRIPTION Reinforced gasket O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring Guide ring O. Ring GACO ring Guide ring O.
  • Page 75 TECHNICAL MANUAL MT050 LINE OFF DEVICE PART. A Three-ways valve PART. B Filter PART. C Pressure regulator PART. D Relief valve PART. E Slide valve PART. F Control device...
  • Page 76 TECHNICAL MANUAL MT050 PART. B FILTER PART. B POS. DESCRIPTION N. OF PIECES Filter cartridge O. Ring O. Ring PART. D RELIEF VALVE PART. D POS. DESCRIPTION N. OF PIECES Plug...
  • Page 77 TECHNICAL MANUAL MT050 Part. F CONTROL DEVICE Mod.: 103-104-105 Mod.: 105/92...
  • Page 78 TECHNICAL MANUAL MT050 Mod.: 103 N. OF PIECES POS. DESCRIPTION Diaphgram Mod.: 104-105 N. OF PIECES POS. DESCRIPTION O. Ring...
  • Page 79 TECHNICAL MANUAL MT050 204/A PILOT N. OF PIECES POS. DESCRIPTION 204/A 205/A 204/A/2/CS 204/A/1/CS 204/A/MO O. Ring Diaphragm Obturator O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring...
  • Page 80 TECHNICAL MANUAL MT050 R14/A PRE-REGULATOR INLET DOWNSTREAM PRESSURE PILOT FEED POS. DESCRIPTION N. OF PIECES Guide ring Reinforced gasket Diaphragm Filter O. Ring O. Ring O. Ring O. Ring...
  • Page 81 TECHNICAL MANUAL MT050 WHEN ORDERING SPARE PARTS, PLEASE SPECIFY: FOR REGULATORS Type of regulator Dne (nominal input diameter) Pe (inlet pressure) Pa (outlet pressure) Works no. (Serial no.) Year of manufacture Type of fluid used Slam-shut (if assembled) Type of control head The no.
  • Page 82 TECHNICAL MANUAL MT050 NOTES...
  • Page 83 TECHNICAL MANUAL MT050 The data are not binding. We reserve the right to make modifications without prior notice. Pietro Fiorentini S.p.A. OFFICES: I-20124 MILANO Italy - Via Rosellini, 1 - Phone +39.02.6961421 (10 linee a.r.) - Fax +39.02.6880457 E-mail: sales@fiorentini.com I-36057 ARCUGNANO (VI) Italy - Via E.
  • Page 84 MPAGINAZIONE E TAMPA A CURA DI January 2021 Redazione a cura di: Pietro Bottari Copyright © 2002 - Pietro Fiorentini S.p.A.

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