USER MANUAL
Contents
1. ss 316L diaphragm RHPS Series aan OWAN 1 3 Typical picture of the standard LBSN4 and its components NG 1 body 20 spring guide 2 spring housing 22 spring housing cover 4 valve assembly 23 knob assembly 9 seat 24 retaining ring 10 o ring 25 socket head cap screw 11 seat retainer 26 ring 15 diaphragm 16 clamp ring 17 bottom spring guide 19 set spring RHPS Series LBSN4 User Manual Rev date 20 09 2010 99 DOO OWAN 2 Installation N WARNING A BACKPRESSURE REGULATOR IS NOT A SAFETY VALVE AND SHOULD NOT BE USED AS SUCH 2 1 Points of attention before installation This regulator can be equipped with different options and connections Before installing the regulator you should fully understand the options and the suitability of your particular regulator and its suitability for the application The preferred mounting position of the regulator is horizontal with the adjustment knob facing upwards It may be necessary to remove the regulator from the system during maintenance or service Make sure that this is possible especially if mounted in a different position The regulator is suitable for gases and liquids Check if the materials on the assembly drawing which came with the regulator are compatible with the used media If this regulator is used with hazardous or toxic media take the necessary safety precautions to ensure a safe2. from people and ensure adequate ventilation After flow the inlet pressure will fall a little under the set pressure This is because of the closing force required for bubble tight closing of the regulator This phenomenon is usually referred to as the reseat pressure and does not indicate a problem with the regulator An increase in the flow will result in a rise of the set pressure A decrease in the flow will result in a fall of the set pressure This is because of the force required for opening the valve of the regulator This phenomenon is usually referred to as the accumulation pressure and does not indicate a problem with the regulator An increase of the outlet pressure will result in a fall of the set pressure A decrease of the outlet pressure will result in a rise of the set pressure This phenomenon is usually referred to as the dependency and does not indicate a problem with the regulator Each regulator type has its own dependency which is related to the ratio between the effective seat area and the sensing area The approximate change can be calculated as shown below AP1 ratio x AP2 A ratio of 1 X means that for every pressure change to P2 of X bar the P1 pressure will change 1 bar LBSN4 0 3 bar ratio 1 52 LBSN4 0 9 bar ratio 1 52 LBSN4 0 20 bar ratio 1 27 Example Regulator with ratio 1 27 Start position End position P1 20 bar P1 bar P2 Obar P2 19 bar AP1 ratio x
3. 9 5 Trouble shooting PRRSPRRFERSREREF TTS PERFELPOFERFEDE AEERETESPE RREA ORAA 11 RHPS Series nn OWAN 1 Introduction 1 1 Detailed description The function of a backpressure regulator is to maintain a constant inlet pressure and to control the inlet pressure with a variable flow This regulator is a diaphragm sensing spring loaded backpressure regulator designed for medium inlet pressure It is ideal for highly accurate control of pressure because of it s large effective sensing area Combined with the low torque no wear stem the regulator is ideal for use in frequent readjustment type applications The regulator comprises a body and spring housing bolted together and has a removable seat and valve The product is designed to be used between 20 C and 80 C whether ambient temperature or media temperature The regulator is soft seated for leak tight shut off in zero flow conditions and is available in stainless steel The maximum in and outlet pressure for the models are limits for other connection types not included Threaded models LBSN4 Inlet 35 bar Outlet 35 bar Check the assembly drawing or regulator for the specific pressure limits of the supplied regulator Standard features ss 316L throughout diaphragm sensing bubble tight shut off 8mm valve 3 outlet ranges bottom mounting 1 2 Special features and options The regulator is available with the following options panel mounting
4. AP2 AP1 1 27 x 19 0 AP1 0 7 bar So as a result of a pressure rise in the outlet pressure from 0 to 19 bar the set pressure will fall from 20 bar to approximately 19 3 bar without adjusting the regulator RHPS Series eo OWAN 3 3 Changing the set pressure Check the supply of medium at the inlet side Make sure the inlet pressure is higher than the required set pressure and that the inlet pressure does not exceed the maximum allowed inlet pressure Open the shut off valve at the outlet side Open the shut off valve at the inlet side slightly to allow a minimal flow Turn the adjustment knob clockwise to increase the set pressure Turn the adjustment knob counterclockwise to decrease the set pressure N A shut off valve on the outlet side must be opened to relief the pressure on the outlet side Final adjustment must be made while increasing the set pressure to obtain the most accurate set point s Reduce the inlet pressure until there is no more flow Open the shut off valve at the inlet side fully to allow full flow during operation RHPS Series an WOH 4 Maintenance irr INCORRECT OR IMPROPER REPAIR OR SERVICING OF THIS PRODUCT CAN CAUSE SERIOUS PERSONAL INJURY AND PROPERTY DAMAGE SWAGELOK B V recommends the product to be removed from the system and to be shipped to SWAGELOK B V for service or maintenance as all regulators must pass rigid acceptance tests before leaving the factory All repairs and s
5. EETERFEPFEFFEE 7 4 1 Required tools for maintenance 44444usssssnennnennnnennennnnnnnnnnnnnennnnnneennnnnnnennnnnnnr nenene Enne en 7 4 2 Points of attention before removal from the system and disassembly seennnnneneenn 8 4 3 Removal from the system 4 44444snsnneennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnsnnnnnnnsnnnnn nennen nnsnnnn innen 8 4 4 Disassembly 240usssnneenennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnsnnnnnnnsnnnnnnnsnennnnnsnnnnnnnnsnnnnnnnsnnnnnnsnennnnnsnnnnn 8 4 5 Inspection of disassembled parts 4444444444H0nnnnnnnennnnnnnnannnnnnnnnnnnnnnannnnnnnnnnennennnennnn nn 8 4 6 Points of attention before assembly u 2444snsnnennnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnnnnnnnnnnnnnnennnn nn 8 4 7 Assembly aa era ad de ee acd haha E are Hrn 8 4 8 Recommended torques 244444400Hn4nnnnnnnnnnennennnnnnnennnnnnnnnnnnnnnnnnnnannnnnnrennnnnsnnnnnnnnnrennnnnsnannnnnn 9 4 9 HIST ale Mereyereree reece cer eeet Trcerrs tr PEFILERLUE freer FSPELEEHIRFERDEEEPIET RE sect eer reece rer ere EEE restr errr trecy reer rer rec PIECE 9 4 9 1 Leakage across the Soal icc ie ats enh cs staaten aan AAE Ea 9 4 9 2 Leakage across the diaphragm 444s44s44nennnsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nn 9 4 9 3 Required outlet pressure range 44444s0unennnnnnnnnnnnnnnennnnennnnnnnnannnnnnnennnnnennnennnnr nennen
6. LBSN4 USER MANUAL Read the complete manual before installing and using the regulator RHPS Series an OWAN N WARNING INCORRECT OR IMPROPER USE OF THIS PRODUCT CAN CAUSE SERIOUS PERSONAL INJURY AND PROPERTY DAMAGE Due to the variety of operating conditions and applications for this product the user is solely responsible for making the final proper decisions concerning the correct assembly and functioning of the product and assuring that all the performance safety and warning requirements are met e Users must be trained and equipped for the handling use and servicing of pressure products and systems Users must contact their gas or liquid supplier for specific safety precautions and instructions Gaseous media should be free of excessive moisture to prevent icing at high flow Always wear the appropriate protective clothing including safety glasses gloves etc if required Follow the applicable safety and maintenance procedures Obey specific local regulations Do not exceed the maximum inlet and outlet pressure of the product or its accessories Operate within the temperature limits and other conditions specified for the product Do not drop or damage the product in any other way This may negatively effect the performance of the product which can cause the product to malfunction Venting fluids and gases can be dangerous Vent to a safe environment away from people Ensure adequate ventilation e This product is not oxygen c
7. a proper sealing across the thread SWAGELOK B V recommends using teflon tape Securely make the appropriate connections to the regulator in accordance with the procedures recommended by the manufacturer of the connections Verify that the regulator is mounted in the system without stress on the connections Stress on the connections can result in faulty connections and dangerous situations Check if the in and outlet fittings are fitted far enough into the regulator and check for leakage across the fitting Shut off valves should be mounted in the system for service or maintenance At the time of delivery every unused gauge connection is plugged with blind fittings Remove these and connect gauges if desired If earthing is required connect an earth wire under a spring housing bolt or in a bottom mounting hole RHPS Series an WOH 3 Operation 3 1 Required tools for operation For changing the set pressure on a standard regulator no tools are required 3 2 Points of attention before operation The adjustment knob is provided with an anti turnout locking ring don t force it The product can be hot or cold depending on the environment temperature and the used media temperature Take the necessary precautions before operating or touching the product If this regulator is used with hazardous or toxic media take the necessary safety precautions to ensure a safe workspace and your personal safety Vent to a safe environment away
8. e must be opened to relief the pressure on the outlet side Disassembly Loosen the hexagon socket head screws and remove the spring housing spring bottom spring guide and valve assembly Loosen the seat retainer to remove the seat and seat o ring Inspection of disassembled parts Check all parts for abnormal wear Replace all parts in case of doubt Points of attention before assembly All parts must be clean and undamaged before starting assembly SWAGELOK B V recommends replacing all o rings and the diaphragm before assembly All threaded parts must be lubricated a little before assembly this to avoid galling of threads All o rings need to be lubricated a little to improve the lifetime of the o ring and the performance of the regulator Assembly Follow the points for disassembly in reverse order to assemble the regulator RHPS Series eo WOKE 4 8 4 9 Recommended torques Only tighten the bolts or parts if the regulator is completely pressure less Hexagon socket head screws M6 10 Nm Diaphragm screw rubber ss316L diaphragm 5 10Nm Seat retainer 15 Nm Testing Check the regulator for leakage across the seat with low and high inlet pressure Check the regulator for leakage across the diaphragm with low and high outlet pressure Check the required outlet pressure range 4 9 1 4 9 2 Leakage across the seat Close all the valves and turn the adjustment knob counterclockwise until it blocks Open the o
9. er Manual Rev date 20 09 2010 10 WOKE 11 5 Trouble shooting Problem Constant leakage from the outlet before the relief set pressure is reached Cause A damaged valve and or seat and or seat o ring Solution Replace the valve and or the seat and or the o ring Problem Constant leak through the relief hole at the side of the spring housing Cause A damaged or ruptured diaphragm Solution Replace the diaphragm Problem The required set pressure can not be reached Cause The inlet pressure is not high enough Solution Make sure that the inlet pressure is sufficient Problem Leakage between the body and the spring housing Cause A damaged diaphragm or insufficient torque on the bolts Solution Replace the diaphragm or tighten the bolts according to the torque specifications Problem The inlet pressure rises too much when going from a static to a dynamic situation Cause There is too much flow in the dynamic situation Solution A larger regulator is required Check the specific application data with the flow curves in our documentation if available Problem The regulator will not relief at the set point Cause The valve assembly is sticking or the adjustment knob is accidentally adjusted Solution Replace the valve assembly or re adjust the adjustment knob Problem The set pressure has changed without adjusting the adjustment knob Cause Changes to the outlet pressure will resu
10. ervicing of this product must be performed by factory certified personnel and tested for operation and leakage If this procedure is not followed for any reason or if any customer changes are made to the product SWAGELOK B V cannot assume responsibility for the performance or safety of a customer repaired product or for any damage resulting from failure of the product The product should be checked periodically for proper and safe operation It is the users sole responsibility to determine the frequency of maintenance based on the application RECOMMENDATION SWAGELOK B V RECOMMENDS TO HAVE SPARE PART KITS READILY AVAILABLE ON SITE All regulators require maintenance at scheduled intervals Annual maintenance is recommended under normal use From experience SWAGELOK B V can tell that especially during the start up of a system the demand for spare part kits is high This is despite all the effort taken to assure a clean system there is usually some debris left in the system which damages the regulator Having spare part kits on site will save time and money as the downtime of the system will be reduced to a minimum whether during start up or normal operation 4 1 Required tools for maintenance a vice to fasten the regulator pincers to take out the o rings a pair of tongs for a retaining ring 8mm a torque wrench a torque wrench hexagon head key 5 an open end wrench 13mm a seat retainer removing t
11. lean and therefore not suitable for oxygen service If there are questions or problems regarding the installation operation and maintenance these should be directed to the proper authority on site before continuing RHPS Series aan OWAN CONTENTS 1 Introduction u ee a a naD aaraa Di saaria raupa nd en a Ha 1 1 1 Detailed descriptio sisien sesen ke een nasa ceadee teren 1 1 2 Special features and options urusuessseesessssnnsnnnnensestsninnsnsnn seuecseasensechanedaecdanecerenanacsecueansuedunadeas 1 1 3 Typical picture of the standard LBSN4 and its component c ceeceeeceeeeeeeeeeeeteeeeeeeeeetees 2 2 WAS tala ON veces scscesncsiees cetvsnsstenencerensasaneis E E E E E E A T 3 2 1 Points of attention before installation 44444s0onsnnnnnnnnnnnnnennnnnnnennnnnnnnennnnnnn nn nnennnn nn 3 2 2 OXYGEN SONCE une nennen einsehen 3 2 3 Install tion instruetions aausnase ea een 4 3 Operati IERRETTEFEPREEFEFEFBELTFFEPFEUPPRELTEETEFEBEREFTPFEPERTEFFPEBETLRRERLEUFERFELBERFEEREFEFFEEEBESUPPFEPREEFFFEPEEUPLERLEFRFEPSERFFFFERRERFTR 5 3 1 Required tools foroperation a unaasiiinee em een 5 3 2 Points of attention before operation 44444444404Hnnnnnnnnnnnnnnnnennnnnnnnnnnnnnennnnnnn nn nannnn nn 5 3 3 Changing the Set pressure au nude arena ee 6 4 eaeoe La eX PRSFEPEREFFEEERSEFPPEBEFFEFFFFFEPPEFEREEEEFEFEPFETEPEPFEESFEFEFFEFFFCPEESEFTTERESPEPEPLETUFFEFEFEFFPPEREFPEFEFPESPFEB
12. lt in changes to the set pressure An increase of the outlet pressure will result in a fall of the set pressure A decrease of the outlet pressure will result in a rise of the set pressure Solution Maintain a constant outlet pressure on the regulator See section operation about dependency Warranty Information Swagelok products are backed by The Swagelok Limited Lifetime Warranty For a copy visit swagelok com or contact your authorized Swagelok representative RHPS Series eo WOKE
13. ool OT 1478 02 media and temperature compatible lubricant for reassembling threaded parts media and temperature compatible lubricant for o rings soapy water for leak testing RHPS Series aan OWAN 4 2 4 4 4 7 Points of attention before removal from the system and disassembly SWAGELOK B V recommends removing the regulator from the installation Make sure that a spare part kit is present The adjustment knob is provided with an anti turnout locking ring don t force it Check ifthe used media is hazardous or toxic If required take the necessary safety precautions to ensure a safe workspace and your personal safety Vent to a safe environment away from people and ensure adequate ventilation Follow your system safety maintenance or special local procedures when removing the regulator The product can be hot or cold depending on the environment temperature and the used media temperature Take the necessary precautions before operating or touching the product Removal from the system Isolate the regulator from all pressure sources by closing the appropriate valves in the system Turn the adjustment knob counterclockwise to decrease the set pressure Make sure that the inlet and outlet pressure are both reduced to zero and that the adjustment knob is turned counterclockwise until it blocks so that there is no more pressure in the regulator and no more spring force on the spring housing A shut off valve on the outlet sid
14. utlet valve completely Slightly open the inlet pressure supply to the regulator and turn the adjustment knob clockwise until you reach 1 bar set pressure Close the inlet pressure supply and check for leakage bubbles at the outlet by using a little soapy water It may be necessary to vent the inlet pressure a little for the valve to close bubble tight Repeat the procedure with the highest set pressure suitable for the regulator Leakage across the diaphragm Close all the valves and turn the adjustment knob counterclockwise until it blocks Slightly open the inlet pressure supply to the regulator until you reach 1 bar inlet and outlet pressure Close the inlet pressure supply and check the connection between body and spring housing for leakage bubbles by using a little soapy water Don t forget the little reliefhole in the spring housing Repeat the procedure with the highest inlet and outlet pressure suitable for the regulator Required outlet pressure range Close all the valves and turn the adjustment knob counterclockwise until it blocks Open the outlet valve completely Slightly open the inlet pressure supply to the regulator and turn the adjustment knob clockwise and check if it reaches the maximum set pressure suitable for the regulator A well performing LBSN4 is 100 bubble tight If there is a leakage across the seat or the diaphragm the damaged parts must be replaced RHPS Series eo OWAN RHPS Series LBSN4 Us
15. workspace and your personal safety Vent to a safe environment away from people and ensure adequate ventilation Avoid sealing compounds which harden be careful with anaerobic loctite type compounds Particles of these compounds can run into the regulator and lock moving parts Frequent assembly and disassembly of the in and outlet fittings can damage the in and outlet thread of the regulator Damaged threads can cause serious injury The product is designed to be used between 20 C and 80 C whether ambient temperature or media temperature In all other cases consult SWAGELOK B V The regulator is standard not oxygen clean Although all regulators are ultrasonically cleaned this does not make them suitable for oxygen use 2 2 Oxygen service Specification of materials in regulators for oxygen service is the user s responsibility SWAGELOK B V can perform cleaning for Oxygen service based on ASTM G93LevelC CGA4 1 at additional cost RHPS Series een OWAN 2 3 Installation instructions Verify that the regulator the connections and its accessories are undamaged Verify that the regulator and its accessories are suitable for the system operating pressure and have the proper connections Carefully clean all pipes and connections Any swarf lint wire etc may cause seat leakage Verify the flow direction of the system and mount the regulator accordingly The standard connection of the LBSN4 is 72 NPT female To get
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