USER MANUAL
Contents
1. RB USER MANUAL Read the complete manual before mounting and using the regulator RHPS Series rere DNA A 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 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 This product is not oxygen clean and th2. ce In liquid systems the pilot pressure can exclusively be taken from a separate gas source The pilot pressure has to be controlled by a self venting type of pressure regulator Increasing the pilot pressure will cause the outlet pressure of the regulator to increase by the factor of the ratio E g if the ratio is 1 20 then 6 bar pilot pressure results in 120 bar outlet pressure Increasing the pilot pressure to 7 bar results in 140 bar outlet pressure RHPS Series retire INIA 4 Maintenance All ratio regulators require maintenance at scheduled intervals Annual maintenance is recommended under normal use More frequent maintenance may be required in heavy duty service A high standard of maintenance would be to clean the entire regulator and to replace all soft parts 4 1 Disassembly Piston models Depressurize the system Disconnect the pilot connection E Loosen bolts on the top diaphragm housing Remove the top diaphragm housing Remove control diaphragm Loosen bolts in the bottom diaphragm housing Remove the bottom diaphragm housing Remove piston valve assembly 2 Loosen body plug a Loosen valve seat 11 Reverse the process for assembly 5 Trouble shooting Problem Constant leakage from the outlet port before the relief set pressure is reached Cause A damaged valve and or seat Solution Replace Problem Leakage around the body plug Cause A damaged o ring or insufficient torqu
3. e on the body plug Solution Replace Problem Leakage between the body and dome Cause A damaged seal Solution Replace Problem Leakage between the upper and lower dome flanges Cause A damaged diaphragm Solution Replace Problem The regulator will not relief at the set point Cause The valve stem is sticking Solution Check the set pressure and the pilot regulator 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 rere Dua
4. erefore 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 eS IAE CONTENTS 1 PEDERI CEI so cic seco wh Ses SoS cit sacle Seti ness tcl ete dete coca a ab cereus ash E eects vaeteeeeelae 4 1 1 Detailed desScnpto i citar isis 4 2 INSTA ION ccoo e 4 2 1 Points of attention before installation c cccccceeeeeeeceeeeeceeeeeeeaeeeeeeeecaeeeeeaeeseneeseeeeesaeeeeaeseeneesags 4 3 Operation id a 4 4 Maintenance cios ae ee eo cca de Goede te aa etsy aaa aaa eaa cadet aaa a a aAa SEa aaa a Eaa aa aeS 5 4 1 Disassembly nunen za 5 5 Trouble shooting s sssiseessnesnenunninenannnuneennaannn rre 5 RHPS Series a IA 1 Introduction A ratio backpressure regulator is a pneumatically loaded dome regulator The pilot pressure to the dome is usually a low pressure 0 7 bar air signal check drawing for exact pressure details The ratio between the pilot pressure and the dome can be as much as 1 50 depending on the model 1 1 Detailed description The pilot pressure signal is fed into the dome chamber onto the large area control diaphragm This diaphragm is mechanically linked to the sensing element which has a much smaller area The sensing element can be either a diaphragm or a piston The difference in areas creates a multiplying effect of sorts Consequently a ratio backpr
5. essure regulator can be installed in a high pressure system while using a low pressure pilot signal The regulator comprises a body and dome joined together by bolts The body has a removable seat and a valve poppet A diaphragm assembly or piston is inserted into the dome 2 Installation RHPS Series regulators have bspp parallel connections Therefore use only connectors fittings with bspp parallel threads Do not use sealing compounds which harden Be careful with anaerobic Loctite type compounds The compounds can run into the regulator and lock moving parts 2 1 Points of attention before installation Carefully clean all pipes and connections Any swarf lint wire etc may cause seat leakage The system should contain a filter Shut off valves should be installed Warning Even though SWAGELOK B V ratio backpressure regulators are soft seated for leak tight shut off at zero flow they should not be left pressurised for extended periods Definitely down stream a valve should be installed to avoid unwanted pressure build up Backpressure regulators do not contain a filter A proper 10 15 micron filter must be installed Not applying a filter can jeopardize the warranty E Gaseous media should be free of excessive moisture to prevent icing at high flow 3 Operation The pilot pressure can only be of a gaseous nature In gaseous systems the pilot pressure can be taken from the high pressure inlet or from a separate sour
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