USER MANUAL VBS8
Contents
1. 9 5 setscrew SS XX N N AW a ipi Sex Oh J f f NEN LITT 1 3 re frut E 3i support diaphragm Im TT a ee AT ET TT AHA HA KAT AKA GS AKA AK An N Ne n Cit Se BA gan a a TT AT LT LT a 57 577 2 N O springguide Oo Cc ran olo C J 2 Slo D o c oO gt gt D 5 O E 7 co D e Ls GENE AENEAN und EE AERE AE AE MEI AU Z br LN 8 valve o ring valve stem valve seat Ko Q 9 U i Hen QO U O LO pus QO o O aC A O O o H o 2 3E 2 p o2 j gt le body assembly springhousing assembly 8 E NE VBS8 User Manual date 05 11 2009 RHPS 2 Installation N WARNING A VACUUM BREAKER IS NOT ASAFETY 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 sketch with mounting modes The preferred mounting position of the regulator is vertical with the springhousing facing horizontal see above sketch The reason is the weight of the diaphragm plate in this position it does not effect the regulation Avoid sealing com2. Valve assembly socket head screw 10 Nm Nut on the diaphragmscrew M10 10 Nm Socket head cap screws 16 pcs M06 10 Nm Springhousing cover o Nm 4 9 Testing Check the VBS8 for leakage across the seat bodyplug and the diaphragm Check the required setpressure range and function Turn the setscrew clockwise a few turns Maintain a test pressure on the upstream side of the regulator The upstream pressure will increase till it reaches the setpressure Vent a bit of the inletpressure to check leakage across the seat Set the regulator at the maximum setpressure Check for leakage across the diaphragm and check the small hole in the springhousing for bubbles by using a little soapy water Check for leakage across the bodyplug If there is leakage across the seat or the diaphragm the damaged parts must be replaced RHPS VBS8 User Manual T date 05 11 2009 RHPS VBS8 User Manual date 05 11 2009 5 Trouble shooting Problem Cause Solution Problem Cause Solution Problem Cause Solution Problem Cause Solution Problem Cause Solution Problem Cause Solution Problem Cause Solution RHPS Constant leakage from the outlet before the relief set pressure is reached A damaged valve and or seat o ring Replace the valve and or seat o ring Constant leak through the hole at the side of the springhousing Damaged diaphragm or not enough torque
3. TBV S9 ead mee UE ee 2 2 InStallauon Er 3 2 1 Points of attention before installation 222z022000000000000 00000 nnnno nenne nenne nenne nnnn anne nenne KEK nnns 3 2 2 Installation Bl pS a eiie p cmn EE 3 3 L0 J e cil ji ON JENE N MESE ENA c Na N DONE a code Ra a N N 4 3 1 Reguired T001S T0 Opera ON say kud n n e eu 4 3 2 Points of attention before operation 2 2u024200200002nnonennonnnnnnnn anne nenne nenne nenne nnne EKA KAK K k KK KA 4 3 3 Chang ng tnesseipressure st nn een A 4 MAINEENAaNce ae CT 5 4 1 Required tools for maintenance ze ersehen 5 4 2 Points of attention before removal from the system 00224002200020nennnnenennenenn nenn nenne nennen 6 4 3 Removal TOMY the Syste uns Messen bj sel Kn n DR i9 da Rek dy 6 4 4 Bio ano L NNN TA eae eae et er ee 6 4 5 Inspection of disassembled Parts ccccecccssccceccceececeecccseeccucecsucecaucecueeeeecsucecsueesseessueessusessueenaaes 6 4 6 Points of attention before ASSEMDIY ccccccescccsecccseeceuceceuceceeecaeeceueeceucesaueesueesueesueessueeseueessaees 6 4 SN I Re Eee 6 4 8 Recommended IOrQUES una T 4 9 TRG SEUNG e E Cc n ademas T 5 Trouble SNO0UNG ia innen 9 6 PED Dec lafallon are een EVA S a EVE WEN w EA E UR E y e E he a dik k k 11 RHPS CONTENTS VBS8 User Manual date 05 11 2009 1
4. on the nut on the diaphragmscrew Replace the diaphragm or tighten the nut Leakage between the body and the springhousing A damaged diaphragm or insufficient torque on the bolts Check the torque on the bolts or replace the diaphragm The required set pressure can not be reached The inlet pressure is not high enough Make sure that the inlet pressure is sufficient The outlet pressure rises too much when flow increases There is too much flow passing through the regulator Check the specific application data with the flow tables in our documentation Note that the differential pressure over the seat is very low The regulator keeps venting in a tankblanketing application Thermal expansion of the blanket gas This is not a problem the regulator functions well The regulator is placed in the system and has different flow characteristics than printed in the documentation Inside diameter of the piping or fittings are too small Piping too long Install the regulator with proper piping and connections Consider the pressure drop caused by piping resistance VBS8 User Manual 9 date 05 11 2009 RHPS VBS8 User Manual date 05 11 2009 10 6 PED Declaration RHPS klarkreg 21 Rabchar k Hocfcdorp 2133PG NieuercY5rnep Dank acc na 34 45 51 613 hederland EVA Amsterdam 24005258 Tale oon 4231401252 620005 BT WAAT no 10799493980 Fax i31 0252 520527 mie zz j yan wwurhosnl EC DECLARATION OF CONFORMI
5. the product 4 3 Removal from the system Isolate the regulator from all pressure sources by closing the appropriate valves in the system Turn the setscrew counterclockwise to decrease the setpressure a shut off valve on the downstream side must be opened to relief the pressure Make sure the inlet and outlet pressure are both reduced to zero and the setscrew is turned counterclockwise until there is no more spring force on the setscrew 4 4 Disassembly Loosen the socket head screws 12 pcs M6 and remove the springhousing and the setspring Loosen the nut on the valve stem and remove the diaphragm plates and diaphragm Remove the retaining ring and take out the valve guiding ring and the valve assembly Loosen the bodyplug from the body and remove the bodyplug and seat Loosen the socket head screw from the valve assembly and remove the valve o ring 4 5 Inspection of disassembled parts Check all parts for abnormal wear Replace all parts in case of doubt 4 6 Points of attention before assembly All parts must be clean and undamaged before starting assembly RHPS 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 4 7 Assembly Follow the points for disassembly in reverse order to assemble the regulator RHPS VBS8 User Manual date 05 11 2009 4 8 Recommended torques Bodyplug 40 Nm
6. Inertisation Tankblanketing regulators USER MANUAL VBS8 Read the complete manual before installing and using the regulator VBS8 User Manual Telefoon 31 0 252 620005 RHP S date 11 05 2009 Fax 31 0 252 620527 info rhps nl www rhps nl 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 e Users must contact their gas or liquid supplier for specific safety precautions and instructions e Gaseous media should be free of excessive moisture to prevent icing at high flow e Always wear the appropriate protective clothing including safety glasses gloves etc if required e Follow the applicable safety and maintenance procedures e Obey specific local regulations e Do not exceed the maximum inlet and outlet pressure of the product or its accessories e Operate within the temperature limits and other conditions specified for the product e Do not to drop or damage the product in any other way This may negatively effect the performance of the product which can cause the product t
7. Introduction 1 1 Detailed description This regulator is a diaphragm sensing spring loaded vacuum breaker designed to limit increasing vacuum at medium gaseous flow The vacuum breaker keeps control of the outletpressure If the vacuum exceeds the setpressure the valve opens and gas starts to flow It is ideal for highly accurate control of pressure because of it s large effective sensing area Because of the low friction valve guidance the regulator is ideal for use in low pressure tankblanketing The regulator comprises a body and spring housing bolted together The valve and seat can be taken out by disassembling the regulator The product is designed to be used at ambient temperatures between 20 C and 80 C The limits of the medium temperature depend on the seals used The VBS8 comes standard with a soft rubber seat seal for leak tight shut off in zero flow conditions The regulator can stand high inletpressure because of the solid construction The maximum in and outlet pressure for the VBS8 are Inlet Outlet pressure vacuum minimum 6 bar maximum Standard features ss 316L throughout diaphragm sensing 4 pressure ranges 21 mm seat internal pressure sensing 1 2 Special features and options different line connections different seal materials RHPS VBS8 User Manual 1 date 05 11 2009 Typical picture of the VBS3 1 3 DW C OW Q TEL ED GE ERA EE V 2 9 00 Q 6
8. TY PRESSURE EQUIPMENT DIRECTIVE PED S7 23 EC RHPS BY Markweg 21 2153 PG NIEUW VENNEP THE NETHERLANDS We hereby declare in compliance with the above Directive that the product s covered by this installation amd manual have been manufactured in accordance with the conformity assessment art 3 3 sound engineering practice The fitter and the end user must however comply with the mounting and connecting instructions defined in our catalogues and installation and operation manuals Date 06 05 2000 5 ae eat Signed A p n JER Fi Mame EC Position Q A Manager Devan of Cd R H PS VBS8 User Manual date 05 11 2009
9. art kits is there Despite all the effort taken to assure a clean system there is usually some debris left in the system which can damage 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 torque wrench a torque wrench hexagon head key 5 socket wrenches 10 17 19 open end wrench 6 mm amp 11 16 snap ring pliers for retaining ring 38 media and temperature compatible lubricant for reassembling threaded parts media and temperature compatible lubricant for o rings soapy water for leak testing RHPS VBS8 User Manual 5 date 05 11 2009 4 2 Points of attention before removal from the system RHPS recommends removing the regulator from the installation Make sure that a spare part kit is present Check if the 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 environmental temperature and the used media temperature Take the necessary precautions before operating or touching
10. flow Turn the adjustment knob clockwise to increase the set pressure Turn the adjustment knob counterclockwise to decrease the set pressure Open the shut off valve at the inlet side fully to allow full flow during operation RHPS VBS8 User Manual date 05 11 2009 A Maintenance Z wana INCORRECT OR IMPROPER REPAIR OR SERVICING OF THIS PRODUCT GAN CAUSE SERIOUS PERSONAL INJURY AND PROPERTY DAMAGE RHPS recommends the product to be removed from the system and to be shipped to RHPS for service or maintenance as all regulators must pass rigid acceptance tests before leaving the factory All repairs and servicing 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 RHPS 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 i RECOMMENDATION RHPS 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 RHPS can tell that especially during the start up of a system the demand for spare p
11. ify 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 Make sure the maximum inlet and outletpressure cannot exceed 6 bar Shut off valves should be mounted in the system for service or maintenance If earthing is required connect an earth wire under a springhousing bolt RHPS VBS8 User Manual 3 date 05 11 2009 3 Operation 3 1 Required tools for operation Use a socket wrench 19 mm with an extended piece to change the setpressure 3 2 Points of attention before operation 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 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 Changing the setpressure 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
12. o malfunction e Venting fluids and gases can be dangerous Vent to a safe environment away from people Ensure adequate ventilation e This product is not oxygen clean 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 PRODUCT WARRANTY RHPS accepts no liability for any loss damage or expense whatsoever arising directly or indirectly from the use of our products Detailed information about our warranty is included in our standard Terms of Sale A copy of our standard Terms of Sale is available upon request The content of this document has been made with the outmost precision and every effort has been taken to ensure their correctness and accuracy However we take no responsibility for any personal injury or property damage resulting from any error or misprint in the supplied content of this document Also due to continued product development we reserve the right to modify or improve the design or the specifications of the product at any time without prior notice All rights reserved No part of this document may be reproduced in any form or in any way without prior written permission from RHPS 2006 RHPS B V VBS8 User Manual RHP S date 05 11 2009 1 INtTOQUCHON nee 1 1 1 Detallea desceriplon sense 1 1 2 Special Teatures and oplions ana 1 1 3 Typicalpicure Or the
13. pounds 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 It may be necessary to remove the regulator from the system during maintenance or service Make sure that this is possible The regulator is suitable for gases Check if the materials on the assembly drawing which came with the regulator are compatible with the used media The product is designed to be used with the ambient temperature between 20 C and 80 C The limits of the medium temperature depend on the used seals The regulator is standard not oxygen clean Although all regulators are ultrasonically cleaned this does not make them suitable for oxygen use 2 2 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 Securely make the appropriate connections to the regulator in accordance with the procedures recommended by the manufacturer of the connections Ver
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