RHPS Series RD(H)F40 User Manual (MS-CRD-0184
Contents
1. RHPS Series OWAN RD H F40 User Manual Read the complete manual before installing and using the regulator N WARNING Before removing a regulator from the system for service you must depressurize system purge the system to remove any residual system media left in the regulator Contents DATO UC O r r ra p raaa arr araa aa aar a a ara p ae aara Eep ar aA r ea aee ra aea Pe a Ea aa aE iaeaea idia 3 Vint o a isin nae a EEEE E E E E E 4 Operation Eaa E ETT T T TT 7 eah ar aloa aa EEE EEE A E A A E E 8 EAA E E EE E E E T E E E E EEE E A NES 9 KKI ICAI a Meee E T E ee meen Se eee ee a 9 Introduction Representative drawing of the standard RD H F40 EN Ss NES QG VTATALAZS SS Y SSNS BSS NSS 6 YV YZ a 1 body 11 valve spring 22 ring 34 dynamic regulation tube 2 dome 13 guide ring 23 socket head cap screw 35 male connector 3 bottomplate 14 retaining ring 24 ring 36 tube 3 8 4 valve case 15 ring 25 socket head cap screw 37 pilot regulator 5 valve case ring 16 socket head cap screw 27 tube 38 o ring 6 valve stem 17 valve insert 28 flange 39 blindplug 1 4 bsp 7 bodyplate 18 diaphragm 30 bonded seal 8 domeplate 19 o ring 31 male connector 9 diaphragmplate 20 o ring 32 tube 3 8 10 seat 21 ring 33 bleedplug 1 4 bsp Installation J WARNING When installi2. et pressure will be put straight through to the outlet The purpose of the external feedback on a pressure regulator is to get a more accurate regulation of the outlet pressure This can be achieved by sensing the outlet pressure downstream of the regulator and feeding it back to the regulator For this purpose Swagelok has provided a special connection marked on the regulator itself as P2 feedback Connecting the external feedback The external feedback must be installed as follows The external feedback is to be connected in a turbulence free zone in the downstream piping at a maximum distance of 5x the outside diameter of the down stream piping The external feedback must be connected on top of the downstream piping The tube size of the external feedback should be in or in N CAUTION Never connect the external feedback line downstream of a shut off valve Principle sketch of external feedback KY EXTERNAL FEEDBACK Y SESS ne LLL AG AA TAN KAEN TN NZ IN 7 SHUT OFF VALVE KK aan vee be l i OUTLET y BY Operation Note All handle directions are when viewed from above Inlet and set pressure settings are obtained by adjusting pressure in the dome Increase the pressure in the dome to increase the inlet pressure Decrease the pressure in the dome to decrease the inlet pressure Icing of the regulator at high flow rates or high pressure drops may occur if the gaseou
3. g the RD H F40 with an inlet pressure higher than 200 bar 2 902 psig a safety valve must be installed in the outlet line because the outlet pressure may not exceed 200 bar 2 902 psig Maintenance 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 140 mm a torque wrench a torque wrench hexagon head key 10 and 14 media and temperature compatible lubricant for reassembling threaded parts media and temperature compatible lubricant for o rings Snoop liquid leak detector Disassembly Loosen the hexagon socket head screws and remove the dome dome plate diaphragm and diaphragm plate Loosen the hexagon socket head screws and remove the bottom plate valve valve spring and seat Inspection of disassembled parts Check all parts for abnormal wear Replace parts in case of doubt Points of attention before assembly All parts must be clean and undamaged before starting assembly Swagelok recommends replacing all o rings and the diaphragm before assembly All threaded parts must be lightly lubricated before assembly to avoid galling of threads All o rings need to be lightly lubricated 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 Recommended torques N CAUTION Only tighten the bolts or par
4. he inlet pressure to the dome regulator and to the pilot regulator is sufficient Problem The outlet pressure rises too much when going from a dynamic to a static 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 product literature if available Problem The outlet pressure does not drop if the pressure in the dome is lowered Cause The valve is sticking Solution Replace the valve assembly Problem The outlet pressure has changed without adjusting the dome pressure Cause Changes to the inlet pressure will result in changes to the outlet pressure Solution Maintain a constant inlet pressure to 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 For additional information see www swagelok com Swagelok Snoop Swagelok Company 5 2010 Swagelok Company with those of other manufacturers December 2010 RO MS CRD 0184 Caution Do not mix or interchange parts
5. ng a Swagelok self venting regulator position the vent connection or line away from operating personnel Operating personnel must protect themselves from exposure to system fluids N CAUTION Do not use the regulators as a shutoff device N CAUTION When using the RDHF40 with an inlet pressure higher than 200 bar 2 902 psig a safety valve must be installed in the outlet line because the outlet pressure may not exceed 200 bar 2 902 psig Connections to System The preferred mounting position of the regulator is horizontal with the dome facing upwards If grounding is required connect a ground wire under a spring housing bolt Filling the dome The dome can be filled using manual or electronic loading Manual loading is This can be done by taking the gas pressure from the system and feeding this through a spring loaded pilot regulator into the dome This is shown in sketch A 2 In liquid systems the gas pressure for manual dome loading can be taken from a cylinder or mains This is shown in sketch B Substituting the spring loaded pilot regulator for a proportional control valve and a pressure sensor allows you to control the pressure electronically Electronic loading 1 This can be done by taking the gas pressure from the system and feeding this through a proportional control valve into the dome This is shown in sketch C This method can be used for low and medium pressure systems 2 This can be done by taki
6. ng the gas pressure from the system and feeding this through a proportional controlled ratio regulator into the dome This is shown in sketch D This method can be used for high pressure systems The best results will be achieved by allowing a small flow to continuously pass through the pilot regulator This flow can either be vented or in gas systems fed back through an orifice into the downstream piping This is usually referred to as dynamic regulation N CAUTION It is not recommended to place a gauge on the dome to set or check the outlet pressure Because of forces in the regulator the dome pressure will always be higher than the outlet pressure Place a gauge in the outlet line to set or check the outlet pressure SKETCH A PILOT REGULATOR VV DYNAMIC REGULATION VENTING TO THE OUTLET LINE DOME REGULATOR PILOT REGULATOR VU SKETCH B DYNAMIC_REGULATION VENTING TO_THE SURROUNDING DOME REGULATOR CYLINDER OR MAINS ELECTRONIC PILOT REGULATOR SKETCH C SENSOR DOME REGULATOR GASSYSTEMS ONLY SKETCH D ELECTRONIC PILOT REGULATOR External feedback AN CAUTION When using the regulator with external feedback option EF make sure that the outlet pressure can be fed back to the external feedback connection before applying pressure to the regulator Failing to do so may lead to damage and non functioning of the regulator as the inl
7. s media or atmosphere contains moisture An auxiliary upstream filter is recommended for use in all but the cleanest of media Installation of a downstream pressure relief is recommended for regulator and system protection If the shut off valve at the outlet side is closed after changing the set pressure the outlet pressure will rise a little because of the closing force required for bubble tight closing of the regulator This phenomenon is usually referred to as the lock up and does not indicate a problem with the regulator A decrease in the flow will result in a rise of the outlet pressure An increase in the flow will result in a fall of the outlet pressure and is usually referred to as the droop This phenomenon does not indicate a problem with the regulator A decrease of the inlet pressure will result in a rise of the outlet pressure An increase of the inlet pressure will result in a fall of the outlet pressure This phenomenon is usually referred to as the dependency or supply pressure effect and does not indicate a problem with the regulator N CAUTION If the pilot regulator also has changing inlet pressures this will make the pressure difference in the outlet line of the dome regulator even bigger This is because the pilot regulator will also increase it s outlet pressure which is the dome pressure Any rise to the dome pressure will result in a rise of the outlet pressure N CAUTION When usin
8. ts if the regulator is completely depressurized Hexagon socket head screws M12 50 N m 442 in Ib Hexagon socket head screws M16 90 N m 796 in Ib 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 A well performing RD H F40 is 100 bubble tight If there is a leakage across the seat or the diaphragm the damaged parts must be replaced Troubleshooting Problem The outlet pressure creeps up without increasing the dome pressure Cause A damaged valve and or seat Solution Replace the valve and or the seat Problem Leakage around the bottom plate Cause A damaged o ring or insufficient torque on the body plug Solution Replace the o ring or tighten the bolts according to the torque specifications Problem Leakage between the body and the dome Cause A damaged diaphragm or insufficient torque on the bolts Solution Replace the diaphragm or tighten the bolts according to the torque specifications Problem Controlled pressure drops off sharply even when the flow is within regulator capabilities Cause The systems filter element is clogged Solution Replace the system filter element Problem The required set pressure can not be reached Cause The inlet pressure to the dome regulator or to the pilot regulator is not high enough Solution Make sure that t
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