PIETRO FIORENTINI REVAL 182 Technical Manual
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PIETRO FIORENTINI REVAL 182 Technical Manual

Pressure regulator
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PRESSURE REGULATOR
REVAL 182
TECHNICAL MANUAL MT043
INSTALLATION, COMMISSIONING AND MAINTENANCE INSTRUCTIONS
| sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903
www.mvandc.com

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  • Page 1 PRESSURE REGULATOR REVAL 182 TECHNICAL MANUAL MT043 INSTALLATION, COMMISSIONING AND MAINTENANCE INSTRUCTIONS | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 2 TECHNICAL MANUAL MT043 REVAL 182 RR 40 R14/A 204/A MOTORIZATION INLET PRESSURE OUTLET PRESSURE PILOT FEED Issue November 2002 | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 3 TECHNICAL MANUAL MT043 DECLARATION OF CONFORMITY The PIETRO FIORENTINI SPA with registered office in Milan (Italy) – via Rosellini, 1, declares under its sole responsibility that the apparatus series Reval 182 bearing the CE marking showed in this manual are designed, manufactured, tested and inspected in accordance with the provisions of Pressure Equipment Directive 97/23/EC (PED).
  • Page 4 | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 5 TECHNICAL MANUAL MT043 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 97/23/EC (PED). The incorporated safety device monitor PM/182 (as well as the in-line monitor REVAL 182) being classified as fail close regulators according to the standard EN 334 is categorized as safety accessory according PED, therefore it can be used both as pressure accessory and safety accessory to PED.

  • Page 7: Table Of Contents

    COMISSIONING THE REGULATOR REVAL 182 WITH PILOT P90+RR4 ....... 30...
  • Page 8 | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...

  • Page 9: Introduction

    MAIN SPECIFICATIONS The REVAL 182 pressure regulator is a regulator for medium and low pressures. The REVAL 182 a fail closed type regulator and therefore closed in event of: - rupture of the main diaphragm; - rupture of the pilot diaphragm;...
  • Page 10 TECHNICAL MANUAL MT043 Connections to be made by the customer Fig. 1 The motorisation pressure is obtained by drawing gas from the regulator at the upstream pressure. The gas is filtered through the incorporated filter 28 and is subjected to initial decompression in the adjustable pre-regulator RR40 (fig.
  • Page 11 TECHNICAL MANUAL MT043 the regulated pressure begins to increase, the force it exerts on the diaphragm 23 of the pilot moves the mobile assembly 16 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 displacement of the obturator 5, to restore the regulated pressure to the set-point.

  • Page 12: Regulator With Pilot 204/A+R14/A

    TECHNICAL MANUAL MT043 1.2.2 REGULATOR WITH PILOT 204/A+R14/A (fig. 3) In the absence of pressure, the obturator 5 is maintained in the closed position by the spring 54, and rests on the reinforced gasket 7 (fig. 3). The upstream pressure, even if variable, does not change this position as the obturator is completely balanced and is therefore subject to equal pressures, even if the sections are different.
  • Page 13 TECHNICAL MANUAL MT043 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 14: Setting Springs

    TECHNICAL MANUAL MT043 SETTING SPRINGS The REVAL 182 regulator uses the P90, P92 and 204/A pilots. The regulation range of the different pilots is given in the tables below. Tab. 1 RR40 Setting springs pre-regulator Code Colour Setting range in bar...

  • Page 15: Installation

    TECHNICAL MANUAL MT043 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 16 TECHNICAL MANUAL MT043 TAB. 4 CONNECTING THE APPARATUSES The connections between the apparatus and the main piping must be made using stainless steel or copper pipe with minimum internal diameter of 8 mm. IN-LINE INSTALLATION Sensing line Control pressure gauge Regulator Downstream connection Bleed clock...

  • Page 17: Accessories

    TECHNICAL MANUAL MT043 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 18: Direct Installation In The Line

    TECHNICAL MANUAL MT043 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 55 (fig.

  • Page 19: Installation With On/Off Valve

    Fig. 9 ACCELERATOR An accelerator (fig. 10) is installed on the PM/182 icorporated monitor and on the REVAL 182 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 97/23/EC “PED”).

  • Page 20: Modularity

    This is a device (fig. 11) 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 REVAL 182 regulator, it is possible to have the SB/82 slam-shut incorporated both with the service regulator and on the one functioning as in-line monitor.

  • Page 21: 4.2.1 Sb/82 Slam-Shut Operation

    TECHNICAL MANUAL MT043 4.2.1 SB/82 SLAM-SHUT OPERATION The SB/82 slam-shut device (see fig. 11/A) 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 22: Sb/82 Setting Springs

    TECHNICAL MANUAL MT043 CONTROL DEVICE CONTROL HEADS MOD. 103 MOD. 102 - 103 Fig. 11/B MOD. 101 MOD. 102 4.2.2 TAB. 7 SB/82 SETTING SPRINGS SETTING RANGE in mbar Characteristics spring Code Colour 2700680 BROWN 20 ÷ 50 2700830 RED-BLA 40 ÷...

  • Page 23: Incorporated Slam-Shut Vb/93

    TECHNICAL MANUAL MT043 INCORPORATED SLAM-SHUT VB/93 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 if it is operated manually. The main characteristics of the slam-shut device are: •...

  • Page 24: 4.3.1 Vb/93 Slam-Shut Operation

    • a mobile obturator 104 subject to the load of the closing spring 124; • a seal 107 already used in the Reval 182 regulators; • a lever assembly 114, 116 and 118 whose rotation provokes movement of the obturator 104;...

  • Page 25: Vb/93 Setting Springs

    TECHNICAL MANUAL MT043 4.3.2 TAB. 8 VB/93 SETTING SPRINGS SETTING RANGE in mbar Characteristics spring VB/31 VB/32 VB/33 Code Colour 2700565 WHITE 5.25 7.25 22 ÷ 43 2700675 YELLOW 5.25 7.25 33 ÷ 60 2700820 ORANGE 5.00 7.00 50 ÷ 95 2700910 6.00 8.00...

  • Page 26: Monitor

    The monitor is an emergency regulator which takes over from the active regulator if for any reason the latter permits the downstream pressure to rise up to the value set for its intervention. When pressure regulator Reval 182 or incorporated monitor PM/182 are used as monitor, to increase response time an accelerato is installed.

  • Page 27: 4.4.2 In-Line Monitor

    TECHNICAL MANUAL MT043 4.4.2 IN-LINE MONITOR With this kind of application, the emergency regulator is installed upstream from the service one (fig. 14). Ref. No. for the connections Connections to be made by the customer V/25 Fig. 14 Ref. No. for the connections Connections to be made by the customer V/25 Fig.

  • Page 28: Start Up

    TECHNICAL MANUAL MT043 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 MT043 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 Reval 182 With Pilot P90+Rr4

    COMMISSIONING THE REGULATOR REVAL 182 WITH PILOT P90+RR4 (FIG.15) If there is also a relief valve in the line, refer to par. 3.1 to check it.

  • Page 31: Commissioning The Regulator With Incorporated Vb/93 Slam-Shut

    TECHNICAL MANUAL MT043 COMMISSIONING THE REGULATOR WITH INCORPORATED VB/93 SLAM-SHUT (FIG. 16) If there is also a relief valve in the line, refer to par. 3.1 to check it. Fig. 16 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 MT043 Rest position (A and B in communication) Controll position (A and C in communication) Chamber with controlled pressure Safety device Environment with the pressure to keep under control Fig. 17 B) On devices without the "push" valve (fig. 18) we recommend separately connecting the control head to a controlled auxiliary pressure and repeat the operations described above.
  • Page 33 TECHNICAL MANUAL MT043 ATTENTION At the end of the operation, reconnect the control head to the downstream pressure take-off. N.B.: The intervention tests should be repeated at least every 6 months. At the end of the slam-shut check, proceed as follows: 1) Check that the slam-shut is in the closed position.
  • Page 34 TECHNICAL MANUAL MT043 Settings of in-line apparatuses consisting of Reval 182 Regulator + Slam-shut + Relief valve TAB. 9: Regulator set-point Set-point Set-point Set-point (Pas) mbar RELIEF VALVE SLAM-SHUT Max SLAM-SHUT Min 6<Pas≤12 20 mbar Slam-shut not 25 mbar available 12<Pas≤15...

  • Page 35: Commissioning The Regulator With Incorporated Pm/182 Monitor And . . . . . . . . . . . . . . . . . . . . . . Accelerating Valve

    TECHNICAL MANUAL MT043 COMMISSIONING THE REGULATOR WITH INCORPORATED PM/182 MONITOR AND ACCELERATING VALVE (FIG. 19) If there is also a relief valve in the line, refer to par. 3.1 to check it. Fig. 19 1) Partially open the bleed cock 6. 2) Very slowly open the inlet on/off valve V1.

  • Page 36: Commissioning The Regulator Plus Reval 182 In-Line Monitor With

    TECHNICAL MANUAL MT043 COMMISSIONING THE REGULATOR PLUS REVAL 182 IN-LINE MONITOR WITH VB/93 SLAM-SHUT VALVE (FIG. 20) If there is also a relief valve in the line, refer to par. 3.1 to check it. Fig. 20 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 37 7) Reduce the setting of the pilot 3 to the selected working value for the service regulator. 8) Check that the REVAL 182 monitor is fully open by controlling the position of the stroke indicator through the window.
  • Page 38 TECHNICAL MANUAL MT043 TAB. 10: Settings of in-line apparatuses consisting of Reval 182 + Regulator + Monitor + Slam-shut + Relief valve Set-point Regualtor Set-point Set-point Set-point Set-point Set-point (Pas) mbar MONITOR ACCELERATOR RELIEF VALVE SLAM-SHUT Max SLAM-SHUT Min 6<Pas≤12...

  • Page 39: Trouble-Shooting

    Tampering with the apparatuses by unsuitable personnel relieves us from all responsibility of any kind. You must therefore train your maintenance personnel or avail yourself of the service centres officially authorised by us. REGULATOR (FIG. 21, 22 and 23) TAB. 11 REVAL 182 PROBLEM POSSIBLE CAUSES APPARATUS REMEDY...
  • Page 40 TECHNICAL MANUAL MT043 TAB. 11 REGULATOR (FIG. 21-22-23) PROBLEM POSSIBLE CAUSES APPARATUS REMEDY Diaphragm [25] ruptured RR40 PREREGULATOR Replace (Fig. 23) Obturator [30] damaged Replace Obturator [30] stuck in the open position PILOT P… Control and clean if necessary (Fig. 23) Diaphregm [23] ruptured Replace Vent hole clogged...

  • Page 41: Vb/93 Slam-Shut

    TECHNICAL MANUAL MT043 TAB. 12 VB/93 SLAM-SHUT (FIG. 26) PROBLEM POSSIBLE CAUSES REMEDY Slam-shut obturator does not close Diaphragm [16] in metering device broken Change diaphragm Seal [107] deteriorated Change seal Leakage from slam-shut obturator Seat of obturator [104] eroded or fitted Change the seal Ring [93] damaged Replace...

  • Page 42: Maintenance

    TECHNICAL MANUAL MT043 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 43: Reval 182 Regulator Maintenance Procedure

    TECHNICAL MANUAL MT043 REVAL 182 REGULATOR MAINTENANCE PROCEDURE DN 1” ÷ 2 Fig. 21 | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 44 TECHNICAL MANUAL MT043 Version DN 2” ÷ 8” Fig. 22 | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 45 TECHNICAL MANUAL MT043 VERSION P90 Version P92 Fig. 23 | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 46 TECHNICAL MANUAL MT043 Procedure for disassembing, completely changing the spare parts, and reassembling of REVAL 182 pressure regulator with P90 + RR40 pilot (PREVENTATIVE PROGRAMMED MAINTENANCE) PRELIMINARY OPERATIONS Put the regulator into conditions of safety; Ensure that the upstream and downstream pressures are 0.
  • Page 47 TECHNICAL MANUAL MT043 19) Reassemble the guide rod, pos. 20) Reassemble the bottom cover, pos. , on the obturator guide, pos. , remembering to align the downstream sensing line hole properly. 21) Reassemble and fix the screws, pos. 22) Reassemble and fix the screws of the diaphragm-holder assembly, remember to align the hole for the transfer nozzle.
  • Page 48 TECHNICAL MANUAL MT043 REASSEMBLING THE REGULATOR REGULATION UNIT Remember that the O-rings and the sliding mechan-ical 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 49 TECHNICAL MANUAL MT043 REASSEMBLING THE P90 PILOT 58) Screw in the screws, pos. , and fix the pilot obturator, pos. , to the mobile assembly. 59) Reassemble the top diaphragm, pos. , the O-ring, pos. , and the disc, pos. , and fix the diaphragm support, pos.

  • Page 50: Pm/819 Monitor Maintenance Procedure

    TECHNICAL MANUAL MT043 PM/182 MONITOR MAINTENANCE PROCEDURE Fig. 24 | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 51 TECHNICAL MANUAL MT043 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 52: Db/182 Silencer Maintenance Procedure

    TECHNICAL MANUAL MT043 DB/182 SILENCER MAINTENANCE PROCEDURE Fig. 25 | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 53 TECHNICAL MANUAL MT043 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 54: Vb/93 Slam-Shut Maintenance Procedure

    TECHNICAL MANUAL MT043 VB/93 SLAM-SHUT MAINTENANCE PROCEDURE Fig. 26 | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 55 TECHNICAL MANUAL MT043 1)Check that the slam-shut is in the closed position. 2)Disconnect the connection pipes between the elbows and the pilot and between the slam-shut head and the down-line pressure take-offs. 3)Using a screwdriver, remove the elastic rings and remove the lever 4)Remove the screws which retain the pressure switch device to the regulator and then remove the device itself from the guide shaft 5)Remove the screws...

  • Page 56: Sb/82 Slam-Shut Maintenance Procedure

    TECHNICAL MANUAL MT043 SB/82 SLAM-SHUT MAINTENANCE PROCEDURE DN: 2” Fig. 27 | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 57 TECHNICAL MANUAL MT043 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. Slacken the fixing screws, pos. , so as to partially slacken the spring, pos. ;...

  • Page 58: Final Operation

    TECHNICAL MANUAL MT043 8.0 FINAL OPERATIONS Refit the P90 + RR40 pilot assembly onto the regulator. Fix the pilot support bracket to the regulator. Reconnect all the feed and sensing line connectors on the pilot and regulator, screwing in the taper seal fittings. 8.1 TIGHTNESS AND SETTING CONTROL Very slowly open the on/off valve upstream from the regulator and using a foaming agent or the like, check: •...
  • Page 59 TECHNICAL MANUAL MT043 TAB. 14 MAINTENANCE WRENCHES FOR REVAL 182 PRESSURE REGULATORS - REVAL 182 + PM/182 WITH PILOT P90 + RR40 Combination spanner Adjustable spanner Compass pin wrench Box spanner Hexagon or allen key Hexagonal T key Hexagonal socket T wrench...
  • Page 60 TECHNICAL MANUAL MT043 TAB. 15 MAINTENANCE WRENCHES FOR REVAL 182 PRESSURE REGULATORS + DB/182 - REVAL 182 + SB/182 WITH PILOT P90 + RR40 Combination spanner Adjustable spanner Compass pin wrench Box spanner Hexagon or allen key Hexagonal T key...

  • Page 61: Weight Of The Components

    TECHNICAL MANUAL MT043 WEIGHT OF THE COMPONENTS TAB. 16 WEIGHT OF THE COMPONENTS IN KG. 1” 2” 2” 3” 4” 6” 8” 6,540 6,540 10,600 10,600 10,600 23,900 23,900 0,260 0,260 0,350 0,350 0,350 0,850 0,850 4,080 4,080 7,300 7,300 7,300 10,800 10,800 4,210 4,210...

  • Page 62: List Of Recommended Spares

    TECHNICAL MANUAL MT043 10.0 LIST OF RECOMMENDED SPARE PARTS | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 63 TECHNICAL MANUAL MT043 REVAL 182 PRESSURE REGULATOR DN: 1” - 2” Fig. A | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 64 TECHNICAL MANUAL MT043 VERSIONS DN: 6” - 8” DN: 3” - 4” - 8” DN: 6” - 8” DN: 2” ÷ 4” Fig. B | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 65 TECHNICAL MANUAL MT043 N. OF PIECES 1” ÷ 4” 6” - 8” 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 Diaphragm Guide ring Guide ring Rubber gasket O.
  • Page 66 TECHNICAL MANUAL MT043 PM/182 MONITOR DN: 1” - 2” | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 67 TECHNICAL MANUAL MT043 VERSIONS N. OF PIECES 1” ÷ 4” 6” - 8” POS. DESCRIPTION O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring DN: 2” ÷ 4” O. Ring O. Ring O. Ring Diaphragm Guide ring Guide ring Rubber gasket...
  • Page 68 TECHNICAL MANUAL MT043 + DB/182 SILENCER DN: 1” ÷ 8” Fig. F | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 69 TECHNICAL MANUAL MT043 REVAL 182 + DB/182 N. OF PIECES 1” ÷ 4” 6” ÷ 8” POS. DESCRIPTION O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring...
  • Page 70 TECHNICAL MANUAL MT043 + VB/93 SLAM-SHUT N. OF PIECES POS. DESCRIPTION Gasket Sealing U-Ring Guide ring O. Ring O. Ring O. Ring | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 71 TECHNICAL MANUAL MT043 CONTROL DEVICE N. OF PIECES VB/31 POS. DESCRIPTION Gasket Diaphragm Sealing U O. Ring O. Ring N. OF PIECES POS. DESCRIPTION Gasket Diaphragm Sealing U O. Ring O. Ring VB/32 N. OF PIECES POS. DESCRIPTION Diaphragm Sealing U O.
  • Page 72 TECHNICAL MANUAL MT043 … + SB/82 SLAM-SHUT DN: 2” VERSIONS DN: 1” DN: 2” - 3” - 4” - 6” - 8” DN: 4” - 6” - 8” | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 73 TECHNICAL MANUAL MT043 VERSIONS Sez. A. A DN: 2” - 3” - 4” DN: 1” ÷ 4” Sez. B. B DN: 6” - 8” - 10” DN: 6” - 8” - 10” CONTROL DEVICE Mod.: 101 - 102 - 103 | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 74 TECHNICAL MANUAL MT043 HEADS CONTROL SB/82 + 101; SB/82 + 102; N. OF PIECES 1” 2”- 3” 4” - 6” - 8” POS. DESCRIPTION Diaphragm Reinforced gasket Guide ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O.
  • Page 75 TECHNICAL MANUAL MT043 P90 - P92 Version Pilots + RR40 Pre-regulator | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 76 TECHNICAL MANUAL MT043 VERSION Mod. P92 N. OF PIECES POS. DESCRIPTION Obturator Diaphragm Gasket Diaphragm Filter Obturator O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring O. Ring | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 77 TECHNICAL MANUAL MT043 204/A PILOT N. OF POS. DESCRIPTION PIECES O. Ring Diaphragm Obturator O. Ring O. Ring O. Ring | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 78 TECHNICAL MANUAL MT043 R14/A PRE-REGULATOR INLET DOWNSTREAM PRESSURE PILOT FEED N. OF POS. DESCRIPTION PIECES Guide ring Reinforced gasket Diaphragm Filter O. Ring O. Ring O. Ring O. Ring | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 79 TECHNICAL MANUAL MT043 WHEN ORDERING SPARE PARTS, PLEASE SPECIFY: FOR REGULATOR 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 head control The no.
  • Page 80 TECHNICAL MANUAL MT043 NOTES | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 81 TECHNICAL MANUAL MT043 NOTES | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 82 TECHNICAL MANUAL MT043 NOTES | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...
  • Page 83 TECHNICAL MANUAL MT043 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 (VI) ONTECCHIO AGGIORE NOVEMBRE 2002 Redazione a cura di: Pietro Bottari Copyright © 2002 - Pietro Fiorentini S.p.A. | sales@mvandc.com | Phone: 877.566.3837 | Fax: 925.407.2903 www.mvandc.com...

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