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Weka PN6, Инструкция по установке, эксплуатации и обслуживанию

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WEKA_IOM_C-0068_TgxV_DN250_PN6_EN  /  17.04.2020 

21 / 38 

6.6.2 

Disassembly of a TgxV DN250/PN6 valve  

The  disassembled  components  must  be  stored  in  a  clean  place.  Damage  to  the 
sealing surfaces requires great effort and expenditure to remedy.

 

 

Required tools and auxiliary agents

 

 
Allen wrench, 14mm 
Open-end spanner SW13. 
Transport protection device with WEKA-no. 46933   
Crane mounting tool (WEKA-no. 2838) 
 
 

STEP 

Picture 

Description 

Additional note: Depending on the nominal width of the valve, the components may slightly vary in 
appearance. However, the steps remain the same. 

1

 

 

 

 

Loosen the screw of the orifice hole using the 
open-end spanner SW13 
 
 
Place the plug onto a clean surface. 
 
 

Attention 

Carefully remove the plug. 
The released space may be under 
pressure! 
 

2

 

 

 

 

Loosen all cylinder head screws using an allen 
wrench, 14mm 
 
The screws and washers can be removed. 
 
Carefully lift the flange and pull over the upper 
part 
 

 

 

Содержание PN6

Страница 1: ...Installation operation and maintenance manual Valves type TgxV DN250 PN6...

Страница 2: ...nents 9 6 Installation assembly and disassembly of valves 10 6 1 Unpack from wooden box general transportation 10 6 2 General information 13 6 3 Installation position 13 6 4 Installation welding of th...

Страница 3: ...C 0068_TgxV_DN250_PN6_EN 17 04 2020 3 38 Maximal allowed pressure 36 9 Maintenance 37 9 1 General information 37 9 2 Orifice hole and or guard connection 37 10 Spare parts 37 11 EU Declaration of conf...

Страница 4: ...ith nominal widths from DN250 pressure levels up to PN6 equipped with a pneumatic diaphragm actuator 1 2 Contact data For more information on the product please contact WEKA AG Sch rlistrasse 8 CH 834...

Страница 5: ...ignal words defined below In addition they are marked by warning symbols pictograms at the place they appear Safety information and warnings indicate important information The following symbols are us...

Страница 6: ...and take appropriate measures wearing personal protection equipment etc If required the product must be cooled down or heated up to ambient temperature Interrupt the auxiliary energy of the actuator...

Страница 7: ...safety the operating manual and particularly the contained safety information on a regular basis Regulations and operating instructions for workplace safety and the relevant information about personn...

Страница 8: ...lve inlet and outlet are covered by protective caps To avoid unnecessary pollution the packaging should only be removed shortly before the product is needed for installation 4 Cleanliness Prior to bei...

Страница 9: ...WEKA_IOM_C 0068_TgxV_DN250_PN6_EN 17 04 2020 9 38 5 Designation of the valve components...

Страница 10: ...the shock indicator are damaged the WEKA AG company should be contacted To unpack the valve from the wooden box please follow the instructions Fixation of the lifting material Attach the lifting loop...

Страница 11: ...68_TgxV_DN250_PN6_EN 17 04 2020 11 38 Uprightening the valve Align the valve slowly and evenly until it is vertical Loosen the four screws at the bottom of the wooden box Now you can lift the valve ou...

Страница 12: ...t the device cannot fall during disassembly Now you can remove the turning transport device from the valve WEKA number 46979 To remove the device the 4 screws should be removed with allen wrench 8mm T...

Страница 13: ...ding the valve should be flushed so that the heat is always conducted out of the valve heat does not pass through the seat area If this cannot be guaranteed we recommend disassembling the actuator and...

Страница 14: ...Ensure cleanliness during work Pollution at the valve seat or at the guide areas may be the reason for malfunction or functional failure of the valve Step Picture Description 1 Fix the thread part in...

Страница 15: ...intended as guidelines Depending on the welder and the welding process the values need to may be adjusted Shielding gas The flow direction of the shielding gas should always be from the valve into th...

Страница 16: ...ic length of 1400 mm The maximum deflection r max for a valve is calculated based on the forces or torques The permissible forces or torques for different cryogenic lengths can be determined using the...

Страница 17: ...ws and nuts must be performed according to generally applicable mechanical engineering guidelines Risk of injury During certain work steps parts are put into movement under great use of force To avoid...

Страница 18: ...is used Unscrew the blue marked screw with an Allen type wrench 5mm The plate can be removed together with the spacer and bracket The position controller Tapper are not connected anymore 2 Remove the...

Страница 19: ...of 6 bar must not be exceeded higher pressure will result in damage to the actuator Attention The actuator and the coupling are moving parts Risk of injury Keep your hands off 4 Loosen the lower nut...

Страница 20: ...the upper edge of the coupling to the yoke stop During assembly of the valve the dimension X must be set Otherwise the valve travel will be incorrect We recommend writing down the dimension X and the...

Страница 21: ...no 46933 Crane mounting tool WEKA no 2838 STEP Picture Description Additional note Depending on the nominal width of the valve the components may slightly vary in appearance However the steps remain...

Страница 22: ...sing a plastic tool avoiding damage at the seat surface remove the o ring on the upper part and store it in a plastic bag 4 Carefully lift the transport protection device with WEKA no 46933 blue marke...

Страница 23: ...be purchased from WEKA AG WEKA No 2838 Attention Carefully lift the insert out of the housing and guide it with one hand Damage to the flow plug or other parts must always be avoided Using a plastic t...

Страница 24: ...alcohol Lint free cloth Gleitmo 599 Step Picture Description Additional note Depending on the nominal width of the valve the components may slightly vary in appearance However the work steps remain t...

Страница 25: ...Attention Always wear goggles when using compressed air 4 Clean the sealing surface and the seal using rubbing alcohol WEKA AG recommends using a lint free cloth Re assemble the new seat seal Please n...

Страница 26: ...the seat seal 6 Re assemble the new secure washers and the screws Grease the thread of the screws with Gleitmo 599 Attention Secure washer must be aligned as shown in the picture Tighten all screw us...

Страница 27: ...onents may slightly vary in appearance However the work steps remain the same 1 Clean the sealing surfaces at the thread part of the housing using rubbing alcohol Please note Use a lint free cloth to...

Страница 28: ...housing and guide it with one hand Damage to the flow plug or other parts must always be avoided 6 Carefully lift the transport protection device with WEKA no 46933 blue marked over the insert Please...

Страница 29: ...8 8 Grease all screws with Gleitmo 599 Re assemble the flange Assemble all washers and screws Tighten all screw with an allen wrench 14mm Torque 135 Nm 9 Clean the orifice opening using rubbing alcoho...

Страница 30: ...type wrench 5mm Open end spanner SW24 Open end spanner SW60 Hook spanner 120 130 Step Picture Description Additional note Depending on the nominal width of the valve the components may slightly vary...

Страница 31: ...eded higher pressure will result in damage to the actuator Attention The actuator and the coupling are moving parts Risk of injury Keep your hands off 4 Carefully assemble the complete actuator unit b...

Страница 32: ...SW24 ATTENTION The insert must not be turned during disassembly this could result in irreversible damage to the seat surface or to the actuator diaphragm 8 If a position controller is used Mount the p...

Страница 33: ...n be replaced Replacing the complete insert To replace the insert first the actuator needs to be disassembled then the instructions in chapter 6 6 2 Disassembly of a TgxV DN250 PN6 valve must be follo...

Страница 34: ...e o ring and back up ring can be replaced Back up rings are blue marked Replacing the seal of the orifice hole For the required tools please see chapter 6 6 2 Disassembly of a TgxV DN250 PN6 valve Fir...

Страница 35: ...assembled In case of clamping jamming or friction noise operation must be stopped immediately and the cause must be investigated Establish the electrical and pneumatic connections for all pneumatic e...

Страница 36: ...d pneumatic additional components If applicable electrical signal values are defined in the technical drawings Initialization of the position controller The valves are already initialized with the pos...

Страница 37: ...ted by means of the orifice hole and or guard connection Orifice hole By removing the plug from the orifice hole a leakage test can be started to check the unit for tightness Depending on the result o...

Страница 38: ...WEKA_IOM_C 0068_TgxV_DN250_PN6_EN 17 04 2020 38 38 11 EU Declaration of conformity...

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