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Installation and Operation Manual 

Urano - Pressure Regulating Valve 

MI-31

 

 

Elaborado 

Verificado / Aprovado 

CSQ 

Data 

Revisão 

Página 

JJ 

 

JJ 

JM 

05/07/21 

05 

60 de 74 

 

16.2) Install the nut (pos 14) in the shaft over the locks (pos 57) and press the opening spring (pos 1) 
until the stop (pos 50) becomes free from the spring action. 
 

                                                    

 

 

17) Proceed with the disassembly of the spring stop (pos 50) by releasing the screws (pos 7). 

 

18) Release the entire assembly and remove the opening spring (pos 1) 

 

               

              

 

 

19) To remove the seat, start by releasing the body bottom cover (pos 49) removing its screws (pos 15). 

 

20) Remove the screws (pos 18) and release the shutter (pos 42/43). 

 

Note: The regulator model URANO of classes 150#, 300# and 600# are supplied with two shutters, the 

one in use has the gasket facing the piston, and the other is kept as a backup with the gasket facing the 
opposing part as shown in the illustration below: 

 

Содержание URANO FA

Страница 1: ...Installation Operation Maintenance Manual Pressure Regulating Valve Model URANO FA FF...

Страница 2: ...PROCEDURE 16 3 7 ACTIVE MONITOR ASSEMBLY 17 4 0 INSTALLATION 19 4 1 FILTER 19 4 2 CLEANING 19 4 3 FLOW DIRECTION AND SYSTEM INTEGRITY 19 4 4 IMPULSE PICK UP 20 4 5 RECOMMENDED INSTALLATION SCHEME 22 4...

Страница 3: ...these tasks Instruction manuals are provided for the operators guidance but it is assumed that they have a basic level of knowledge If there are any questions or ambiguities that affect the proper pro...

Страница 4: ...ened the upstream pressure can pass through the regulator and over pressurize the downstream section of the main line All regulators etc shall operate with the regulation spring specified by the manuf...

Страница 5: ...ficate carried out in the DVGW Deutscher Verein des Gas und Wasserfaches e V Technisch wissenschaftlicher Verein laboratory confirming its efficiency and compliance with DIN EN 334 Gas pressure regula...

Страница 6: ...n the operation 2 3 4 COEFFICIENT OF FLOW Cv ND Cv KG 1 15 440 2 63 1950 3 123 3800 4 220 6850 6 486 15080 8 900 28250 NOTE 1 We suggest considering a 20 safety margin on the calculated value 2 When d...

Страница 7: ...POINT PRESSURES Pressure regulators model URANO use two pilot models for pressure control called G 40 and G 42 The table below presents the adjustment ranges of each model PILOT G 40 SPRING COLOR PAR...

Страница 8: ...up to 5 SSV AG up to 5 2 3 10 PRESSURE REGULATOR DIMENSIONS DIMENSIONS mm A RF B C ND 150 PN16 300 PN25 PN40 600 900 ANY CLASS ANY CLASS 1 184 197 476 412 2 254 267 268 516 412 3 298 318 337 381 620...

Страница 9: ...main regulator diaphragm L If a decrease in downstream pressure occurs due to an increased consumption or a drop of the upstream pressure an imbalance between the spring I force on the pilot H diaphra...

Страница 10: ...tallation and Operation Manual Urano Pressure Regulating Valve MI 31 Elaborado Verificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 10 de 74 FIGURE 1 URANO FAIL CLOSE A B D C E F G H L I K...

Страница 11: ...under normal operating conditions since the main regulator spring is pressing the shutter for it to stay in the open position The pilot compares the output pressure sensed by the diaphragm H and contr...

Страница 12: ...nstallation and Operation Manual Urano Pressure Regulating Valve MI 31 Elaborado Verificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 12 de 74 FIGURE 2 URANO FAIL OPEN A B D C L F K I G H...

Страница 13: ...tion differences with different internal parts This differentiation is necessary for one to be able to operate FA pressure control valves and the other for use with FF regulators With pressure regulat...

Страница 14: ...aphragm assembly A up or down causing the pilot shutter B to leave the seat C thus allowing the inlet pressure reduction and sending the gas at an appropriate pressure to load the main valve causing t...

Страница 15: ...m and spheres collar monitoring the outlet pressure In case of outlet pressure increase or decrease the external bush will move up or move down allowing the spheres running out of channel and the main...

Страница 16: ...hut off it is necessary to equalize the pressure before and after the shutter However it is necessary to use the integrated bypass in the reset lever See below how to proceed When there is a lock the...

Страница 17: ...lure As already mentioned in this manual is important to bear in mind that the classification as FA or FF is given exclusively by the main valve diaphragm fail and lack of power for the shutter operat...

Страница 18: ...Installation and Operation Manual Urano Pressure Regulating Valve MI 31 Elaborado Verificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 18 de 74 A C T I V E M O N I T O R A S S E M B L Y...

Страница 19: ...uipment installation it is necessary to check if 1 The equipment is in perfect conditions or it has evidence of damage during transportation If so do not proceed with the installation and contact GASC...

Страница 20: ...steel AISI 316 with OD to connect the regulator pick ups to the process To prevent dirt and condensates accumulation in impulse pick ups we recommend that their installation shall have a 5 to 10 slope...

Страница 21: ...e pressure control valve therefore providing feed to the active valve booster When the URANO SC FF valve is mounted to operate in a system with only one pressure reduction stage this outlet is provide...

Страница 22: ...INSTALLATION SCHEME 4 5 1 SINGLE REGULATOR 1 Inlet blocking valve 6 Partial relief valve 2 Cartridge type filter of 5 micra filtration degree 7 Outlet pressure gauge 2 way manifold 3 Inlet pressure g...

Страница 23: ...than 5D if the installation project is analyzed and approved by GASCAT s engineering Another recommended installation option is to use a pneumatic lung to connect sensor pick ups taken near the equip...

Страница 24: ...d by GASCAT s engineering 4 5 2 ACTIVE MONITOR SYSTEM 1 Inlet blocking valve 7 Pressure regulating valve URANO ACTIVE 2 Cartridge type filter of 5 micra filtration degree 8 Partial relief valve 3 Inle...

Страница 25: ...for the sensor pick up may be less than 5D if the installation project is analyzed and approved by GASCAT s engineering Another recommended installation option is to use a pneumatic lung to connect se...

Страница 26: ...rificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 26 de 74 3 Reduced damage to tubing during maintenance and transportation Note The position indicated for the sensor pick up may be less...

Страница 27: ...FF REGULATOR 1 Inlet blocking valve 6 Pressure regulating valve URANO 2 Cartridge type filter of 5 micra filtration degree 7 Partial relief valve 3 Inlet pressure gauge 2 way manifold 8 Outlet pressu...

Страница 28: ...e less than 5D if the installation project is analyzed and approved by GASCAT s engineering Another recommended installation option is to use a lung to connect sensor pick ups taken near the equipment...

Страница 29: ...let output and bypass if applicable 3 Open vent valve downstream of the last pressure regulator installed on the span 4 Make sure that the station is depressurized 5 Check if all connectors are proper...

Страница 30: ...relieved discharged Relieving the regulation spring we ensure that the valve will remain in the closed position when pressurized 3 Check if the discharge valve needle valve is open by 1 8 of a turn A...

Страница 31: ...r this pressure rise and leave the pressure adjusted to a value at least 20 above the low set point pressure of the SSV 7 Once the SSV actuator is already pressurized you may release the by pass valve...

Страница 32: ...ator of the reserve span assume regulation slowly press the regulation spring clockwise until the set point of the regulator reaches a value higher than the set point of the line in operation thus the...

Страница 33: ...ve As the line shut off valves are closed we will use the vent valve to simulate a small flow and so proceed with the regulator adjustment before aligning the span 2 With the line still depressurized...

Страница 34: ...ssure downstream of the regulator valve use a pressure gauge to monitor this pressure rise and leave the pressure adjusted to a value at least 20 above the low set point pressure of the SSV 7 Once the...

Страница 35: ...t has been reached start to slowly unload release the pilot spring of the active valve by turning the adjustment screw counter clockwise This will reduce the setpoint of this regulator 15 Adjust the s...

Страница 36: ...19 Once the pressure has stabilized open the vent valve by one half turn and check the adjustment accuracy 20 Once the pressure regulation agrees with the desired value you shall close the vent valve...

Страница 37: ...tor regulator unloading outlet will be coupled to the outlet downstream of the active valve Thus the pilot of the monitor valve will remain open until it receives the corresponding pneumatic signal to...

Страница 38: ...tion thus the reserve regulator will open slowly and assume the operation It is important that the two regulators remain with a set point difference of at least 5 10 so that there is no set point over...

Страница 39: ...ferably by teams trained by GASCAT s instructors For training and qualification of operators and technicians please contact GASCAT through the e mails below to check on their availability E mail venda...

Страница 40: ...4 Regulator FF Spring to close Replace the main diaphragm pos 4 Gas escape though the vent of the pilot cover Rupture of the diaphragm pos 19 Replace the diaphragm Gas escape though the booster gasket...

Страница 41: ...parts as well as this instruction manual for reference of how to work safely and efficiently during the equipment maintenance ATTENTION GASCAT s pressure regulator valves components are developed man...

Страница 42: ...31 Elaborado Verificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 42 de 74 6 1 RECOMMENDED REPAIR PARTS AND KITS 9 43 42 46 2 49 12 5 14 10 7 3 11 31 45 37 6 29 16 27 15 19 17 23 38 44 26...

Страница 43: ...AGM 1 1 1 1 1 1 8 VIEWER 1 1 1 1 1 1 15 O RING 1 1 1 1 1 1 16 O RING 1 1 1 1 1 1 17 O RING 2 2 2 2 2 2 18 O RING 1 1 1 1 1 1 19 O RING 1 1 1 1 1 1 20 O RING 1 1 1 1 1 1 21 O RING 1 1 1 1 1 1 22 O RING...

Страница 44: ...MI 31 Elaborado Verificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 44 de 74 11 47 46 57 2 36 53 15 6 7 18 12 9 4 13 35 49 41 51 8 16 33 20 31 19 22 23 24 21 27 25 26 28 29 42 48 30 32 5...

Страница 45: ...4 6 8 2 DIAPHRAGM 1 1 1 1 1 1 10 VIEWER 1 1 1 1 1 1 19 O RING 1 1 1 1 1 1 20 O RING 1 1 1 1 1 1 21 O RING 3 3 3 3 3 3 22 O RING 1 1 1 1 1 1 23 O RING 1 1 1 1 1 1 24 O RING 1 1 1 1 1 1 25 O RING 1 1 1...

Страница 46: ...Installation and Operation Manual Urano Pressure Regulating Valve MI 31 Elaborado Verificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 46 de 74...

Страница 47: ...do CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 47 de 74 BOOSTER G 43 PILOT G 42 40 BOOSTER G 43 POS DESCRIPTION QTY 8 GASKET 1 10 DIAPHRAGM 1 18 O RING 1 20 O RING 1 21 O RING 1 22 O RING 1 25 O RING...

Страница 48: ...Installation and Operation Manual Urano Pressure Regulating Valve MI 31 Elaborado Verificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 48 de 74 BOOSTER G 43 PILOT G 42 40...

Страница 49: ...Data Revis o P gina JJ JJ JM 05 07 21 05 49 de 74 BOOSTER G 44 PILOT G 42 40 BOOSTER G 44 POS DESCRIPTION QTY 9 GASKET 1 10 DIAPHRAGM 1 17 O RING 1 18 O RING 1 20 O RING 1 21 O RING 1 22 O RING 1 23 O...

Страница 50: ...V POS DESCRIPTION QTY POS DESCRIPTION QTY 1 RELIEF 1 8 O RING 1 2 O RING 1 9 O RING 1 3 O RING 1 10 O RING 2 4 PARBAK RING 1 11a O RING 1 5 O RING 1 11b DIAPHRAGM 1 6 O RING 1 12 O RING 1 7 O RING 1 N...

Страница 51: ...the components positions shown in the diagram of section 6 0 of this manual 3 Remove the pilot block and all connectors connected to the main valve 4 Proceed by removing the screws pos 5 5 Remove the...

Страница 52: ...emove the diaphragm assembly Note Notice that the main valve diaphragm of the regulator model URANO is molded and the convex surface tends to remain with its face upwards in this assembly because the...

Страница 53: ...rado Verificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 53 de 74 9 Release the screws pos 4 and remove the bottom cover of the actuator pos 31 10 Pull the actuator guide bushing pos 42 I...

Страница 54: ...14 and release the shutter pos 38 Note The regulator model URANO of classes 150 300 and 600 are supplied with two shutters the one in use has the gasket facing the piston and the other is kept as a b...

Страница 55: ...Installation and Operation Manual Urano Pressure Regulating Valve MI 31 Elaborado Verificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 55 de 74...

Страница 56: ...all the conditions set out in item 4 6 1 of this manual have been observed 2 Under no circumstances start the equipment disassembly if it is pressurized The disassembly procedure given below refers t...

Страница 57: ...ide sleeve pos 45 as illustrated below 7 3 Remove the diaphragm assembly Note Notice that the main valve diaphragm of the regulator model URANO is molded and the convex surface tends to remain with it...

Страница 58: ...led in a line and for some reason cannot be removed from the same the procedure will be the same but with the lower cover facing down 12 Remove the screws of the intermediate pos 15 and release the in...

Страница 59: ...threaded eyelets as given in the table below URANO ND PISTON THREAD 2 M8 x 1 25 3 M10 x 1 5 4 M14 x 2 0 6 M18 x 2 0 8 M22 x 2 25 Screw 2 bolts in the threaded holes and with the help of a combination...

Страница 60: ...ssembly of the spring stop pos 50 by releasing the screws pos 7 18 Release the entire assembly and remove the opening spring pos 1 19 To remove the seat start by releasing the body bottom cover pos 49...

Страница 61: ...proceeding with the equipment disassembly check if all the conditions set out in item 4 6 1 of this manual have been observed 2 Under no circumstances start the equipment disassembly if it is pressur...

Страница 62: ...ta Revis o P gina JJ JJ JM 05 07 21 05 62 de 74 7 Turn the pilot block so that the bottom of the pilot faces up release the screws pos 16 15 and remove the bottom cover pos 47 49 8 Remove the spring a...

Страница 63: ...JM 05 07 21 05 63 de 74 11 Remove the diaphragm plate and the lower diaphragm pos 9 11 turn the pilot block to the initial position and proceed by dismantling the bushing pos 35 32 12 Remove the diaph...

Страница 64: ...below otherwise the seat will not match the shutter pos 29 26 2 After mounting the seat pos 46 48 in the movable base item 44 46 it is necessary to leave the seat perfectly aligned with the movable b...

Страница 65: ...n 6 8 PROCEDURE FOR THE G 43 BOOSTER PRE REGULATOR DISASSEMBLY 1 Before proceeding with the equipment disassembly check if all the conditions set out in item 4 6 1 of this manual have been observed 2...

Страница 66: ...Verificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 66 de 74 4 Remove the cover pos 39 and the diaphragm assembly pos 28 5 Lock the shaft pos 28 release the nut pos 11 remove the disc sp...

Страница 67: ...MI 31 Elaborado Verificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 67 de 74 6 Now we will dismantle the bottom part of the booster To do this it is ideal to rotate the same so that the...

Страница 68: ...Pressure Regulating Valve MI 31 Elaborado Verificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 68 de 74 7 Remove the filter element pos 26 and release the gasket pos 8 of the gasket holder...

Страница 69: ...ome observations on specific points that must be examined closely during the booster reassembly 1 During assembly of the diaphragm assembly to the shaft pos 28 it is necessary to perform the plate spr...

Страница 70: ...erved 2 Under no circumstances start the equipment disassembly if it is pressurized The disassembly procedure given below refers to the components positions shown in the diagram of section 6 0 of this...

Страница 71: ...JJ JJ JM 05 07 21 05 71 de 74 5 Remove the booster shaft pos 34 6 Release the diaphragm item 10 by loosening the plate of the lower diaphragm pos 43 7 Now we will dismantle the bottom part of the boo...

Страница 72: ...lating Valve MI 31 Elaborado Verificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 72 de 74 8 Release the gasket pos 9 of the gasket holder pos 47 and its respective O ring pos 22 9 Remove...

Страница 73: ...ing valve due to the high differential pressure This internal relief is adjusted by the spring pos 4 compression during assembly of the diaphragm set onto the shaft pos 34 therefore during assembly it...

Страница 74: ...ion Manual Urano Pressure Regulating Valve MI 31 Elaborado Verificado Aprovado CSQ Data Revis o P gina JJ JJ JM 05 07 21 05 74 de 74 TOOLS DIMENSIONS COMBINATION SPANNER 5 8 3 4 1 1 1 8 2 13mm ALLEN K...

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