DeZURIK 3650-7200 PEC ECCENTRIC VALVES
Instruction
D10019
April 2015
Страница 1: ...DeZURIK 3650 7200 PEC ECCENTRIC VALVES Instruction D10019 April 2015 ...
Страница 2: ...hazardous pipeline materials Handle valves which have been removed from service with suitable protection for any potential pipeline material in the valve Inspection Your PEC Eccentric 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 Parts Re...
Страница 3: ...ed Assembly Drawing 6 Installation 7 Closed Position 9 Lubrication 9 Plug Orientation 9 Packing Adjustment 9 Packing Replacement Replacing Packing with Actuator Removed 10 Replacing Packing Without Removing Actuator 12 Disassembly 12 Reassembly 14 Removing Valve from Pipeline 16 Field Test 16 Emergency Operation 16 Predicted Wear of Parts 16 Troubleshooting 17 ...
Страница 4: ...vs Pipe Area 3650 36 36 105 4200 36 42 79 4250 48 42 136 4850 48 48 104 5400 48 54 82 5450 60 54 124 6050 60 60 100 6600 60 66 100 7200 60 72 79 This valve is a pressure vessel Failure to release pipeline pressure may result in personal injury and or flow system damage Completely release pipeline pressure before removing the actuator from the valve or removing the valve from the pipeline Handling ...
Страница 5: ...mmer to help remove the bonnet from the body Lifting devices capable of handling the weights of the components are needed A fixture or counterbalance is needed for removing the plug from the body Approximate weights of the components are shown in Table B Table B Basic Valve and Component Weights does not include actuator weight Valve Size Valve Component Weights pounds Total Body Plug Bonnet Journ...
Страница 6: ...DeZURIK 3650 7200 PEC Eccentric Valves D10019 Page 6 April 2015 Exploded Assembly Drawing Figure 1 Exploded Assembly Drawing ...
Страница 7: ...correct installation procedure Liquids and Gases 1 Before installation remove foreign material such as weld spatter oil grease and dirt from the valve and pipeline 2 Install the valve as shown in Figure 2 Figure 2 Liquids and Gases 3 Ensure the valve and flanges are concentric to ensure proper flange sealing 4 Tighten the flange bolts or studs in a crisscross pattern ...
Страница 8: ...r VERTICAL pipelines install the valve with the end marked SEAT at top of valve Figure 3 Liquids with Suspended Solids 3 Tighten the flange bolts or studs in a crisscross pattern 4 Ensure the valve and flanges are concentric to ensure proper flange sealing NOTE In the case of limited space where both the recommended seat orientation shown and the recommended plug orientation described in 2a above ...
Страница 9: ... plug for a given pressure drop across the valve To avoid excessive plug and seat wear caused by over torquing use the actual pressure drop across the valve when determining correct closing torque 5 After the valve has been closed using the correct amount of torque set the actuator closed position stop to limit actuator travel at this position Lubrication This valve does not require routine lubric...
Страница 10: ...ent accidental operation of the actuator When an eccentric valve is mounted in a vertical pipeline or mounted in a horizontal pipeline with the plug stem horizontal gravity can cause the plug to swing to a lower position in the valve body when the actuator is removed Place the plug in the lowest position before removing the actuator 4 Remove the actuator from the valve See Actuator Instructions 5 ...
Страница 11: ...g surfaces then fasten the two access covers on the sides of the bonnet Replacing Packing Without Removing Actuator Excessive pipeline pressure can propel the loose packing and can cause personal injury or equipment damage If possible relieve the pressure in the pipeline to 0 psi before removing the packing gland 1 Ensure that the pipeline pressure does not exceed 25 psi if possible relieve the pr...
Страница 12: ...is valve was assembled at the factory using special jigs and fixtures that align the components and hold them in position during assembly Without the use of these fixtures field disassembly and reassembly are difficult and could result in damage to valve components especially the rubber face of the plug To disassemble the valve follow these steps Note The lifting equipment used during the disassem...
Страница 13: ...use any personal injuries or equipment damage 8 Lower the plug onto spacers so the bonnet can be removed See Figure 5 9 Remove the packing gland and packing from the bonnet 10 Lift the bonnet off the end of the plug stem 11 Remove the eight screws that fasten the lower journal cover in place and remove the cover from the valve body 12 Remove the spacer and thrust washer 13 Remove the journal beari...
Страница 14: ...down the plug stem 4 Slide the bonnet down the plug stem until it contacts the thrust bearing See Figure 6 Figure 6 Thrust Bearing Contacting Bonnet Inside of Valve 5 Lubricate the o ring groove of the bonnet then place the o ring in the groove 6 Clamp onto the plug stem and lift the bonnet and plug as an assembly 7 Position the plug in the valve body as shown in Figure 7 then carefully lower the ...
Страница 15: ...rnal cover insert the o ring then lift the cover into place making sure the spacer contacts the machined surface in the cover Secure the cover to the valve body with eight screws 15 Place the keys in the plug stem keyseats Apply RTV silicone sealant to the top of the bonnet then install the actuator as described in the Actuator Instructions 16 If the valve was removed from the pipeline reinstall i...
Страница 16: ...r actuator can cause personal injury or equipment damage Disconnect and lock out power to actuator before servicing 3 If the actuator is powered disconnect and lock out the pneumatic hydraulic or electrical power to prevent accidental operation of the actuator 4 Support the valve assembly then remove the flange bolts 5 Remove the valve from the pipeline Field Test Stroke the valve between the full...
Страница 17: ...n Valve does not close Object is wedged between plug and seat Completely open the valve to flush object from the valve If flushing does not work remove valve from the pipeline and remove object See Removing Valve from Pipeline section Actuator closed position is out of adjustment Adjust the closed position stop See Actuator Instructions Valve leaks when closed Plug is worn or damaged Replace plug ...
Страница 18: ...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...
