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DeZURIK RCV ROTARY
CONTROL VALVES

Instruction

D10361

June 2017

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Summary of Contents for RCV

Page 1: ...DeZURIK RCV ROTARY CONTROL VALVES Instruction D10361 June 2017 ...

Page 2: ...th hazardous pipeline materials Handle valves which have been removed from service with suitable protection for any potential pipeline material in the valve Inspection Your RCV Rotary Control Valve has been packaged to provide protection during shipment however it can be damaged in transport Carefully inspect the unit for damage upon arrival and file a claim with the carrier if damage is apparent ...

Page 3: ...Contents Description 4 Handling 4 Installing Valve 4 Operation 4 Required Tools 4 Lubrication 4 Adjusting Packing 4 Drawings 5 Replacing Packing 7 Seat Replacement 8 Valve Disassembly 11 Valve Reassembly 12 Actuator Closed Position Stop Adjustment 15 Troubleshooting 15 ...

Page 4: ... of the valve As the plug rotates a variable orifice is formed with the circular seat in the body The valve actuator is connected to the valve shaft and positions the plug at the open closed and intermediate positions The valve is fully closed when the plug touches the seat and the valve is fully open when the plug is 90 degrees counterclockwise from the closed position The open and closed positio...

Page 5: ...DeZURIK RCV Rotary Control Valves June 2017 Page 5 D10361 Drawings Figure 1 Component Identification Disassembled ...

Page 6: ...DeZURIK RCV Rotary Control Valves D10361 Page 6 June 2017 Drawings Continued Figure 2 Component Identification Assembled ...

Page 7: ...ing chamber in the body 7 Place the new packing rings A10 onto the upper shaft A6 and slide rings into position in the packing chamber NOTE If Graphoil Packing Option G2 A10 is used lubricate the inside and outside diameters of each packing ring with Krytox 240 AC lubricant 1068502 8 Place the gland A9 in position over the upper shaft A6 and packing rings A10 and replace the gland nuts A8 Tighten ...

Page 8: ...he valve body so it is centered in the valve flow way NOTE The plug will be positioned at an angle 8 Apply a light coat of media compatible grease to the beveled edge of the seat that rests against the plug when assembled NOTE When replacing a tungsten carbide seat DeZURIK recommends replacing the plug and seat together as a matched set In order to minimize seat leakage the ball and seat must be l...

Page 9: ...ug does not touch the seat then rotate it back toward the closed position until the plug just touches the complete circumference of the seat 15 Tighten the retainer screws A4 evenly while allowing the seat to center on the closed plug 16 Tighten the screws to the torques shown in Table B Table B Torques for Retainer Screws Valve Size Torque in mm ft lbs Nm 1 2 25 50 10 2 13 2 2 4 60 100 12 2 16 2 ...

Page 10: ...DeZURIK RCV Rotary Control Valves D10361 Page 10 June 2017 Seat Replacement Continued Figure 3 Correct Position of Plug With Offset Orifice Figure 4 Timing Mark Toward Valve Neck ...

Page 11: ...e the valve from the pipeline 4 Remove the actuator from the valve as described in the Actuator Instructions 5 Remove the adaptor screws A27 and the adaptor P2 from the body A1 6 Remove the two screws A4 and remove the seat retainer A3 and gasket A5 from the body A1 7 Remove seat A16 8 With the plug in the open position loosen and remove the set screw A13 from the plug upper hub 9 Remove the gland...

Page 12: ...6 Place the thrust bearing A20 against the bottom of the lower shaft A18 If thrust bearing has a fabric side fabric side must face the shaft 7 Apply a light coat of anti seize compound to the threads of the screws A23 8 Place the gasket A21 and the cover A22 on the bottom of the body A1 Fasten the cover with screws A23 For valve sizes 1 2 25 50mm tighten the 1 4 screws to 10 2 ft lbs 13 2 Nm For v...

Page 13: ... shaft square in relation to body flange face a The shaft square should be parallel with valve flange face as shown in Figure 5A Preferred for all actuators or angled slightly as shown in Figure 5B All actuators except Reverse acting spring to close Diaphragm actuators or Figure 5C Reverse acting spring to close Diaphragm actuators only b If the valve shaft square is not oriented as in Figure 5A o...

Page 14: ...A3 and apply a light coat of media compatible grease to the seal NOTE If a metal C seal is used insert the seal so the gap in the seal faces the retainer See Figure 2 detail A Table E Torques for Mounting Screws Valve Size Torque in mm ft lbs Nm 1 2 25 50 12 2 16 2 2 4 60 100 12 2 16 2 6 8 150 200 40 3 54 4 10 12 250 300 80 5 108 7 23 Install the seat A16 and seat retainer A3 as described in the S...

Page 15: ...f the actuator is a powered actuator reconnect power to the actuator 6 The pipeline may now be pressurized Once pressurized verify that the valve is sealing properly a If seat leakage occurs adjust the closed position stop until seat leakage stops b If packing leakage occurs tighten the gland nuts A8 evenly and slowly just enough to stop the leakage Troubleshooting Condition Possible Cause Correct...

Page 16: ...antee shall be null and void if after shipment from our factory the item is modified in any way or a component of another manufacturer such as but not limited to an actuator is attached to the item by anyone other than DeZURIK Inc Factory Service personnel All orders accepted shall be deemed accepted subject to this limited warranty which shall be exclusive of any other or previous Warranty and th...

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