Samson 46-5, Mounting And Operating Instructions

Page 1: ...Differential Pressure Regulators with Flow Limitation Type 46 5 Type 46 6 Mounting and Operating Instructions EB 3130 EN Edition February 2010 Edition February 2010 Type 46 6 Type 46 5 ...

Page 2: ...ot known 10 3 5 Decommissioning 11 3 5 1 Pressure conditions in the plant and at the regulator 12 4 Maintenance Replacing parts 16 4 1 Cleaning or replacing the plug 16 4 2 Replacing the diaphragm 16 5 Troubleshooting 18 6 Nameplate 19 7 Customer inquiries 19 8 Dimensions and weights 20 9 Technical data 22 2 EB 3130 EN Contents WARNING WARNING indicates a hazardous situation which if not avoided c...

Page 3: ...structions trained personnel is referred to as individuals who are able to judge the work they are assigned to and recognize possible dangers due to their specialized training their knowledge and experience as well as their knowledge of the relevant stan dards 4 The regulator complies with the requirements of the European Pressure Equipment Directive 97 23 EC The declaration of conformity issued f...

Page 4: ...e side of the operating dia phragm The resulting differential pressure is converted into a positioning force at the dia phragm This force moves the plug depend ing on the force of the valve spring 5 or set point spring s 8 The maximum flow rate flow limitation is adjusted at the orifice 1 2 The cross section of the valve is changed in such a way that the differential pressure and the differential ...

Page 5: ... 6 3 2 3 4 6 4 17 16 18 5 15 6 1 Δp 6 6 2 9 10 8 1 1 2 1 1 Type 46 6 Screwed ends 11 6 3 2 3 17 16 18 6 4 5 4 6 1 15 Δp 6 1 1 2 1 1 Type 46 5 Screwed ends Turned into the plane of projection Turned into the plane of projection Turned into the plane of projection Position DN Nm Pos 3 Guide nipple 15 to 25 32 to 50 70 110 Pos 15 Screws 15 to 32 40 to 50 8 18 Table 1 Tightening torques in Nm ...

Page 6: ...of the main pipe see Fig 4 Install a strainer e g SAMSON Type 1 FN Strainer upstream of the valve e g up stream of the transfer station NOTICE Protect the regulator against frost when con trolling freezing media 2 2 Control line Depending on the regulator version a con trol line standard 6 mm pipe diameter must be adapted and mounted on site Make sure that the control line is free of dirt The cont...

Page 7: ...ure gauges Ideally install hand operated shut off valves both upstream of the strainer and down stream of the differential pressure regulator This allows the plant to be shut down for cleaning and maintenance routines or when the plant is not operated for long periods of time To monitor the pressures prevailing in the plant install pressure gauges both upstream and downstream of the regulator and ...

Page 8: ...r e g by measuring the pressure drop Clean the strainer if necessary NOTICE When pressure testing the pipelines with the regulator installed make sure the test pres sure does not exceed 1 5 times the nominal pressure The orifice to adjust the flow rate at the regu lator must be completely open If necessary remove the regulator from the pipeline All plant components must be sized for the test press...

Page 9: ...scale value smaller than 1 Under certain conditions the set point can not be adjusted anymore as a result In this case the following action is recom mended Relieve the process pressure from both sides of the regulator Turn the adjuster counterclockwise as far as it will go to its lowest position Turn the adjuster back clockwise at least past the scale value 1 to 2 The regulator can now be readjust...

Page 10: ...he dia grams on the following pages apply to this assumed value 3 4 2 Plant pressure drop not known How to proceed 4 Unscrew the cap 18 4 Undo lock nut 16 and turn the set point screw 17 clockwise as far as it will go to close the orifice 4 Completely open the motorized valve 4 Open the orifice initially one turn at a time Check the flow rate at the heat me ter reading of flow measuring unit Then ...

Page 11: ...ize DN used this is point D When a line is drawn vertically upwards from point D this results in point E which in dicates how many turns of the set point screw are required The example shows that 6 turns counter clockwise are required starting from the closed orifice restriction 3 5 Decommissioning Close first the shut off valves in the flow pipe and then those in the return flow pipe EB 3130 EN 1...

Page 12: ...re between the flow pipe and the return flow pipe is calculated as follows Δpmin Δpset point V KVS 2 Δpmin Minimum differential pressure between the flow and return flow pipes in bar Δprestriction Differential pressure created at the restriction to measure the flow rate in bar Δpset point Differential pressure set point in bar Δpplant Differential pressure when the plant is fully opened pressure d...

Page 13: ...0 5 V m3 h DN 15 Kvs 0 4 DN 15 Kvs 1 Fig 7 Adjustment diagram DN 15 20 25 with KVS 0 4 to 1 Pressure loss in plant Δp in bar Limitation for Type 46 5 Differential pressure set point fixed for Type 46 5 to be adjusted to 0 2 0 3 0 4 and 0 5 for Type 46 6 Turns of set point screw scale division Flow rate ranges Possible range Δp at restriction in bar Adjustment diagram applying to water ...

Page 14: ...s 2 5 DN 15 Kvs 4 DN 20 Kvs 6 3 DN 25 Kvs 8 Fig 8 Adjustment diagram DN 15 to DN 25 with KVS 2 5 4 6 3 and 8 Pressure loss in plant Δp in bar Differential pressure set point fixed for Type 46 5 to be adjusted to 0 2 0 3 0 4 and 0 5 for Type 46 6 Adjustment diagram applying to water Δp at restriction in bar Flow rate ranges Possible range Turns of set point screw scale division ...

Page 15: ... 12 5 DN 40 Kvs 16 Kvs 201 DN 50 Kvs 20 Kvs 251 Fig 9 Adjustment diagram DN 32 to DN 50 Adjustment diagram applying to water Pressure loss in plant Δp in bar Differential pressure set point fixed for Type 46 5 to be adjusted to 0 2 0 3 0 4 and 0 5 for Type 46 6 Turns of set point screw scale division Flow rate ranges Possible range Δp at restriction in bar 1 Flanged valve version ...

Page 16: ...read the screws 15 and remove the actuator from the valve body The entire bottom section must be exchanged in versions with manual ad juster manufactured until the start of 1998 4 For DN 15 to 25 unscrew the guide nip ple with the plug section 3 using a socket wrench order no 1280 3001 For DN 32 to 50 first unscrew stopper and pull out the plug section 5 Clean the seat and plug assembly thor oughl...

Page 17: ... by turning the unit counterclock wise Remove it from the bottom section of the valve body and replace it 5 Push the complete assembly unit with re placement diaphragm over the spindle 20 and turn it clockwise one turn to fas ten it onto the spindle 6 Lift the diaphragm plate to check whether the thread of the spring plate 9 has en gaged If not turn it once more 7 Align the bottom section Tighten ...

Page 18: ... contact SAMSON Differential pressure or flow rate set point not reached Seat and plug untight Remove valve clean seat and plug If neces sary replace plug section 4 1 Otherwise return device to SAMSON for re pair Wrong set point range has been selected Check set point range and contact SAMSON Safety device e g pressure limiter has been triggered Check plant unlock safety device Insufficient pressu...

Page 19: ... and to have an idea of the installation situation specify the following details refer to the nameplate 4 Type and nominal size of the regulator 4 End connections 4 Model number or configuration ID Var ID 4 Upstream and downstream pressures 4 Flow rate in m h 4 Has a strainer been installed 4 Installation drawing EB 3130 EN 19 Nameplate Fig 10 Nameplate 1 2 3 4 1 Configuration ID Var ID 2 Type des...

Page 20: ...2 H G 1 8 ØD H1 H L1 L SW R d G 1 8 Fig 11 Dimensional drawings Types 45 6 Version with manual adjuster DN 15 to DN 32 set point ranges 0 1 to 1 0 bar Flanged body DN 32 40 50 Type 46 6 Connection nuts with welding ends Type 46 5 Connection nuts with welding ends Connection nuts with flanges Connection nuts with threaded ends ...

Page 21: ...ersion with flanges 1 2 or version with flanged body DN 32 to 50 Length L3 130 150 160 180 200 230 Weight approx kg 46 5 3 0 3 7 4 3 6 2 9 5 11 0 46 6 3 4 4 1 4 7 6 4 14 0 15 5 1 PN 16 25 2 For valves in DN 40 and DN 50 the flanges are ready mounted on the valves Nominal size DN 15 20 25 321 401 501 External pipe Ø d 21 3 26 8 32 7 42 48 60 Connection D G G 1 G 1 G 1 G 2 G 2 Width across flats SW ...

Page 22: ... 45 0 45 0 4 Nominal pressure PN 16 25 25 Max perm differential pressure Δp across the valve 10 2 20 bar 16 bar Max perm temperature Liquids 130 C 2 150 C Air and non flammable gases 80 C Pressure above adjusted differential pressure at which internal excess pressure limiter re sponds 0 5 bar Differential pressure set point ranges Type 46 6 Set point continuously adjustable 0 2 to 1 bar 0 5 to 2 b...

Page 23: ...EB 3130 EN 23 ...

Page 24: ...SAMSON AG MESS UND REGELTECHNIK Weismüllerstraße 3 60314 Frankfurt am Main Germany Phone 49 69 4009 0 Fax 49 69 4009 1507 Internet http www samson de EB 3130 EN S Z 2010 04 ...