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DeZurik APCO 100SA, Инструкция по установке, эксплуатации и обслуживанию

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DeZurik APCO 100SA Скачать руководство пользователя страница 13

DeZURIK

 

 

APCO CRF Rubber Flapper Swing Check Valves 

December 2012 

Page 13 

D12007 

 

Troubleshooting 

Condition 

Possible Cause 

Corrective Action 

Cover leaks. 

Cover gasket is damaged. 

Replace cover gasket. 

Valve leaks excessively from 
one side of the flapper to the 
other. 

Foreign matter caught between 
flapper and seat. 

Fully open valve to remove 
object. 

Flapper is worn or damaged. 

Replace flapper. 

Valve leaks at flange joint. 

Loose flange bolting. 

Tighten flange bolting. 

Blown flange gasket. 

Replace flange gasket. 

Miss-alignment or damage to 
field piping and supports. 

Adjust miss-alignment or repair 
piping or supports. 

Damaged flange face/s or 
improper flange connections. 

Repair flange, replace valve 
body or adjust flange 
connections. 

Valve does not fully close. 

Object is wedged between seat 
and disc. 

Fully open valve to remove 
object. 

 

Содержание APCO 100SA

Страница 1: ...APCO CRF 100 100SA 100SR RUBBER FLAPPER SWING CHECK VALVES Instruction D12007 May 2017 ...

Страница 2: ...en removed from service with suitable protection for any potential pipeline material in the valve Inspection Your APCO CRF Rubber Flapper Swing Check 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 Recommended spare parts are listed o...

Страница 3: ...r Coated Valves 4 Maintenance 5 Operation 6 Start up Procedure Bottom Buffer 6 Oil Filling Procedure 8 Maintenance Bottom Buffer 8 Adjustment of Flow Control Valve 8 Operation of Internal Cushion 9 Spring Return Attachment Option 10 Adjustment of Closing Speed to minimize slam 10 Maintenance Spring Return 10 Assembly Procedure 11 Drawings 11 Troubleshooting 13 ...

Страница 4: ...d moisture runoff and pooled rain water Installation The APCO CRF Rubber Flapper Swing Check Valve may be installed in either horizontal or vertical position with the flow upward The embossed flow arrow on the valve body must be pointing in the direction of flow Valves with Bottom Mounted Buffer the oil tanks 27 and 32 of Figure 2 must always be in upright position Unless otherwise specified the v...

Страница 5: ...olate the Rubber Flapper Check Valve from system before loosening the Cover Bolts 4 to remove the Cover 2 3 Loosen each cover bolt only three full turns then tap the side of the cover with a mallet to separate only the valve cover from the Cover Gasket 3 this will relieve any pressure in the valve 4 Continue loosening to remove all cover bolts and lift off the cover After removing the cover the Fl...

Страница 6: ... mounted buffer assembly figure 2 utilizes two air over oil tanks an accumulator 32 and an oil reservoir 27 The accumulator is pressurized to allow the buffer to fully extend by counteracting the pressure in the pipeline The oil reservoir is vented to atmosphere and its main function is to lubricate the piston and the cylinder Start up Procedure Bottom Mounted Buffer 1 Remove the pipe plug from th...

Страница 7: ...ents to the flow control valve and or the internal cushion needle valve until satisfactory closing is achieved A split collar is mounted on the buffer rod to lock it in place when it is necessary to disconnect the cylinder for repairs while the pump is running In very rare cases however it can be used to shorten the buffer rod stroke when the system demands higher percentage of free fall closing o...

Страница 8: ...oil fill level 3 Replace both fittings 4 Shut down pump Maintenance Bottom Mounted Buffer The Rubber Flapper Check Valve is shipped from the factory fully lubricated and oil tanks filled with oil to their proper levels ready for installation It requires a very minimal amount of preventive maintenance Special care should be taken to the exposed area of the buffer rod when painting the valve It shou...

Страница 9: ...back pressure against piston assembly The back pressure cushions and slows the final part of the piston stroke thus reducing the high impact hammering of the Piston Assembly against the Cylinder Cap Turning the Adjusting Screw to allow more or less fluid to escape regulates the degree of cushioning as desired In Figure 5 when pressurized fluid enters the Cylinder Cap End to strike the Piston Assem...

Страница 10: ...Spring Cover 54 see figure 6 2 Loosen Adjusting Screw Lock Nut 58 and then turn Spring Adjusting Screw 57 counterclockwise This will decrease the pressure of the flapper hence minimize head loss and increase flow rate 3 Lock the Adjusting Screw with the Lock Nut when desired setting has been reached Maintenance Spring Return There are very few moving parts in this valve a spring adjusting mechanis...

Страница 11: ...the spring mechanism assembly This will disconnect the Spring 63 from the Lower Spring Guide 51 3 Remove Rubber Flapper 10 and check for cracks and tears and inspect body seat surface for wear Assembly Procedure 1 Replace Cover Gasket 3 if necessary 2 Replace Rubber Flapper 10 and make certain it rests flat and centered against the body seat surfaces 3 Install Spring 63 over Lower Spring Guide 51 ...

Страница 12: ...0R Valves 4 Cover Bolt 5 Cover Bolt 10 Rubber Flapper 10A Flapper Plug Screw 10C Plug Screw Nut 51 Lower Spring Guide 53 Upper Spring Guide 54 Spring Cover 55 Pivot 56 Spring Bracket 57 Spring Adjusting Screw 58 Adjusting Screw Lock Nut 59 Thread Seal Washer 61 Adjusting Screw Bushing 63 Spring 64 Pin Retainer Figure 6 Spring Return Attachment ...

Страница 13: ...Fully open valve to remove object Flapper is worn or damaged Replace flapper Valve leaks at flange joint Loose flange bolting Tighten flange bolting Blown flange gasket Replace flange gasket Miss alignment or damage to field piping and supports Adjust miss alignment or repair piping or supports Damaged flange face s or improper flange connections Repair flange replace valve body or adjust flange c...

Страница 14: ...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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