Mounting and Operating Instructions EB 2559 EN
Contents
1. point Table 1 and the required set point Turn the set point adjuster 10 23456789 101112 the required amount of turns as specified Turns of the set point adjuster in Fig 2 U to increase the set point Based on the default setting any subsequent Ui te reduce the seh poll change to the set point can be also be made by determining the required number of turns Fig 2 Adjustment diagram using the specifications listed in Table 1 3 Lock the setting with the lock nut 11 Table 1 Set point adjustment Set point range 2 to 10 bar 8 to 26 bar 25 to 40 bar Adjusted to 10 bar 10 bar 25 bar Set point change per tum EB 2559 EN 9 Maintenance 5 3 Decommissioning Close first the shut off valve on the upstream side of the valve and then on the down stream side of the valve 6 Maintenance The regulators do not require any mainte nance Nevertheless they are subject to nat ural wear particularly at the seat plug and operating bellows Depending on the operating conditions check the regulator at regular intervals to avoid possible malfunctions We recommend removing the regulator from the pipeline before making any technical changes to it WARNING Process medium can escape uncon trolled on dismantling the regulator Risk of cold burns Allow the regulator to defrost before depressurizing and draining it and re move it from the pipeline Check the filters in ports A and B for dirt and if nec2. 559 EN 2357 3 12 Non return unit accessories 13 Filter 14 Body screws 16 Closing spring 17 Soldering nipple with ball type bushing accessories Installation A Installation In the delivered state the regulators are packed to be free of oil and grease for oxy gen service Do not open the packaging until immediately before installation WARNING Explosion hazard due to the use of oil and grease in oxygen atmospheres Make sure that the regulator is abso lutely clean and free of oil and grease on installing it Flush and clean the pipeline thoroughly be fore installing the regulator Make sure the regulator is installed free of stress Install a strainer upstream of the regu lator Otherwise impurities in the pipeline may impair the proper functioning of the val ve above all the tight shut off 4 1 Mounting position Install the pressure regulator with the actuator housing suspend ed downward with port C facing upward in horizontal pipelines Observe the flow direction tion Direction of flow from port A to port B Excess pressure valve Direction of flow from port B to port C The ports A and B are marked on the body Required spare parts and accessories are listed in Data Sheet gt T 2570 4 2 Shut off valves We recommend installing a hand operat ed shut off valve both upstream and down stream of the regulator This allows the plant to be shut down fo
3. Please send your inquiries to service samson de To assist diagnosis specify the following details see section 8 Type designation with index coefficient Upstream and downstream pressure Customer specific details Temperature and process medium Min and max flow rate Isa strainer installed Installation drawing showing the exact location of the regulator and all the additionally installed components shut off valves pressure gauge etc 00 Nameplate Details Nameplate specifications on the regulator body 1 Set point range date of manufacture 2 designation with modification index 3 Customer specifications CE conformity Fig 3 Nameplate details EB 2559 EN 11 Technical data 9 Technical data Type 2357 3 2357 3 Process medium in the gas state Process medium in the liquid state Nominal pressure PN 40 Max permissible operating pressure 40 bar Kys coefficient 3 2 Set point ranges 2 to 10 bar 8 to 26 bar 25 to 40 bar Safety function Excess pressure function 5 bar above the set point 12 bar above the set point 0 5 bar above the set point Temperature range Weight approx 196 to 200 C 3 5 kg Note More details on regulator accessories can be found in Data Sheet T 2570 EN 12 EB 2559 EN Dimensions 10 Dimensions Type 2357 3 Pressure Regulator Sta
4. Self operated Pressure Regulators Type 2357 3 Pressure Build up Regulator Type 2357 3 with non return unit at port C Ports A and B with soldering nipple with ball type bushing Mounting and Operating Instructions EB 2559 EN Edition July 2014 Definition of signal words DANGER Hazardous situations which if not Property damage message or mal avoided will result in death or seri function ous injury AA AAA O Note WARNING Additional information Hazardous situations which if not avoided could result in death or se rious inj Aye p jury ecommended action 2 EB 2559 EN Contents 1 2 2 1 3 4 4 1 4 2 5 5 1 5 2 2 9 6 6 1 7 8 9 10 Contents Page General safety instructions cssccssscssscssssssscsssccssccsenssssccsnscssssssescsnsesesees 4 Process medium and scope of application ssccsssscsssscsssccssscesseccssecessees 5 Transportation and storage oia 5 Design and principle of operation 6 Installationen een nie 8 POURING POSO erario nn ee 8 Shut off valves erario nea 8 eer T 8 SS LoT EE o EE TTE II ee 8 Sel point usina aio 8 DECIS cane 10 Maintenance vcd 10 Changing the set point FANGS inicia 10 Customer Service uni 11 Narnieplale 11 LC lee ee esse 12 DUG INS IONS E 13 2559 3 General safety
5. dium operating pressure or by moving parts are to be prevented by taking appro priate precautions Proper transport storage installation operation and maintenance are as sumed EB 2559 EN Process medium and scope of application 2 Process medium and scope of application Pressure regulators for cryogenic gases and liquids as well as other liquids gases and va pors Operating pressures up to 40 bar Set point ranges from 2 to 40 bar Temperatures from 196 to 200 C Oxygen clean according to international standards and guidelines The regulators are designed to keep the pressure constant to the adjusted set point especial ly in cryogenic plants The regulator functions as a pressure build up regulator with safety function direction of flow from A to B closing or as an excess pressure valve direction of flow from B to C opening WARNING Risk of injury and property damage due to high pressure in the plant A suitable overpressure protection must be installed on site in the plant section 2 1 Transportation and storage The regulators must be carefully handled transported and stored Protect the regulators against adverse influences such as dust dirt or moisture before they are installed In the delivered state the regulators are packed to be free of oil and grease for oxygen ser vice To avoid contamination do not open the packaging until immediately before installa tion EB 2559 EN 5 Design and pr
6. essary clean them If faults or malfunctions cannot be remedied contact SAMSON see section 7 6 1 Changing the set point range The set point ranges adjusted in the facto ry can be changed by changing the set point springs 8 and operating bellows 3 see gt T 2570 EN Spare parts and accesso ries How to proceed 1 Loosen lock nut 11 and relieve the ten sion from the set point springs 8 by turning the set point adjuster 10 width across flats SW 5 counterclockwise 2 Undo and remove the screws 14 width across flats 10 Remove the body cover 9 seal 4 1 and spring plate 7 Take out the set point springs 8 and operat ing bellows 3 3 Insert new set point springs 8 for the re quired set point range together with the operating bellows 3 into the valve body 1 4 Replace the seal 4 1 spring plate 7 and body cover 9 Fasten using screws 14 width across flats 10 5 Turn the set point adjuster 10 clockwise up to the point where the springs tension can be slightly felt EB 2559 EN Customer service 7 Customer service If malfunctions or defects occur contact the SAMSON After sales Service Department for support The addresses of SAMSON AG its subsidiaries representatives and service facilities world wide can be found on the SAMSON website www samson de in all SAMSON product catalogs or on the back of these Mounting and Operating Instructions
7. inciple of operation 3 Design and principle of op eration See Fig 1 The regulator consists of a valve with three ports A B and a spring loaded operat ing bellows 3 with set point adjuster 10 and a tubular plug 2 2 The process medium flows from port A to port B in the Type 2357 3 Pressure Regulator used as a build up pressure regulator with safety function The valve is open when no pressure is ap plied The pressure downstream of the valve is transmitted to the operating diaphragm 3 The positioning force produced by this pressure moves the pressure build up plug 2 1 which is firmly attached to the plug sleeve depending on the spring force adjust able at the set point adjuster 10 The valve closes as soon as the pressure downstream of the regulator has assumed the adjusted set point Functioning as a pressure build up regula tor the regulator also operates as a safe ty valve for the pressure chamber upstream of port A When the pressure rises above the set point by approx 5 bar the position ing force overcomes the force of the clos ing spring 16 causing the pressure build up plug 2 1 to open and the pressure is re lieved to ports B and C Functioning as an excess pressure valve the medium flows from port B to C The tubu lar plug seals off the operating bellows when there is no pressure drop across port B and C The pressure at port B acts on the oper ating bellows 3 The posit
8. instructions ml General safety instructions The regulators are to be mounted started up or serviced by fully trained and qualified personnel only the accepted industry codes and practices are to be observed Make sure employees or third persons are not exposed to any danger All safety instructions and warnings given in these mounting and operating instructions particularly those concerning installation start up and mainte nance must be strictly observed According to these mounting and operating instructions trained person nel refers to 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 applicable standards The regulators comply with the requirements of the European Pressure Equip ment Directive 97 23 EC The declaration of conformity issued for a regula tor bearing the CE marking includes information on the applied conformity assessment procedure The declaration of conformity is available on request To ensure appropriate use only use the regulator in applications where the operating pressure and temperatures do not exceed the specifications used for sizing the regulator at the ordering stage The manufacturer does not assume any responsibility for damage caused by external forces or any other external factors Any hazards that could be caused in the regulator by the process me
9. ioning force pro duced by this pressure opposes the spring force of the set point spring 8 and opens the tubular plug 2 2 when the pressure ris es above the set point by approx 0 5 bar The pressures are equalized and the medi um escapes through the inside of the tubular plug over port C As an excess pressure valve the regulator can be optionally equipped with a non re turn unit 12 It prevents the medium from flowing back to port C and allows mainte nance work to be performed on the regula tor without having to empty the tank first EC type examination An EC type examination according to the Pressure Equipment Directive 97 23 EC Module B has been performed on the regu lator EB 2559 EN RAS N eo AAA AN 2722 ne RS 13 ig A ILL E LLL LP A Si om IN N IE SIT var us dz 242774 re Va DS O Design and principle of operation Ze 22747279 22272 A gt FEB LL 77 8 227 7 gt x 17 E T P AS AN J24 Y NI Se m B iy 1 Valve body 2 1 Pressure build up plug 2 2 3 Operating bellows 4 1 og 17 Tubular plug Seal body cover Seal top section of body 7 Spring plate 8 Set point springs 9 Body cover 10 Set point adjuster hexagon socket SW 5 11 Lock nut SW 17 A m Type Fig 1 Sectional drawing EB 2
10. ndard version with soldering nipple accessories and non return unit accessories Type 2357 3 Pressure Regulator Special version made of stainless steel with welding ends accessories and non return unit accessories Fig 4 Dimensions in mm EB 2559 EN 13 EB 2559 EN EB 2559 EN 15 SAMSON AG MESS UND REGELTECHNIK Weism llerstra e 60314 Frankfurt am Main Germany Phone 49 69 4009 0 Fax 49 69 4009 1507 samson samson de www samson de EB 2559 EN 2014 08 26 English
11. r cleaning and mainte nance and when the plant is not used for longer periods of time Install a pressure gauge at a suitable point to monitor the pressures prevailing in the plant 5 Operation See Fig 1 5 1 Start up First start up the regulator after mounting all parts 5 2 Set point adjustment Each pressure regulator are delivered with the set point listed in Table 1 already adjust ed Turn the set point adjuster 10 using Allen key width across flats 5 to change the de fault set point Provided a pressure gauge has been in stalled at a suitable point in the plant the required set point can be directly adjusted while monitoring the pressure reading at the gauge EB 2559 EN Operation When a pressure gauge is not installed ad f Set point just the set point using the adjustment dia bar gram Fig 2 To increase the set point turn the set point adjuster into the body and out of the body to reduce it Set point range 25 to 40 bar NOTICE Set point adjuster screwed too tight The regulator is blocked and the me dium flow through it is restricted Pres sure regulation is no longer possible Only screw the set point adjuster up to the point where the spring tension can still be felt How to proceed 1 Loosen the lock nut 11 width across flats 17 to allow the set point adjuster to ange move freely 2 to 10 bar 2 Determine the difference between the fixed set
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