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DeZURIK 

BHP High Performance Butterfly Valves 

November 2015 

Page 23 

D10503 

 

Seat Replacement

 

(Continued) 

Dual Seat Options (RTS2, TTS2, TIS2, and RIS2) 

a.  If the actuator is connected to 

the valve shaft, loosen the 
connection so that the valve 
shaft can rotate. 

b.  Loosen the packing gland nuts 

(A15).   

 

c.  Place the seat control ring (A22) 

in the groove in the new PTFE 
seat (A21). 

d.  Center the PTFE seat (A21), the 

gasket (A27) and the metal seat 
(A28) on the closed disc. 

e.  Apply a media compatible rust 

inhibitor to the threads of the 
seat retainer screws (A23).  

f.  With all components centered, 

mount the seat retainer (A20) to 
the body with the seat retainer 
screws. Tighten the screws as 
shown in Table D. 

g.  If the valve actuator connection was loosened in step a, tighten the connection. 

h.  Adjust the packing gland nuts (A15) as described in the 

Packing Adjustment

 section.  

i.  Continue with step 7 on page 24. 

 

Table D: Seat Retainer Screw 
Torques 

Screw 

Size 

Torque 

ft lbs 

Nm 

8-32 

1.5 ± 0.5 

2.03 ± 0.69 

10-24 

2.5 ± 0.5 

3.39 ± 0.69 

1/4-20 

5.5 ± 1.5 

7.46 ± 2.03 

5/16-18 

12.0 ± 3.0 

16.27 ± 4.07 

3/8-16 

21.5 ± 5.5 

29.15 ± 7.46 

 

 
 

 

Figure 13 — Seat Options  

(RTS2, TTS2, TIS2, and RIS2)

 

Содержание BHP

Страница 1: ...DeZURIK BHP HIGH PERFORMANCE BUTTERFLY VALVE Instruction D10503 November 2015 ...

Страница 2: ...when dealing with hazardous pipeline materials Handle valves which have been removed from service with suitable protection for any potential pipeline material in the valve Inspection Your High Performance Butterfly 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...

Страница 3: ...ption TMD 10 PTFE V Flex Live Loaded Packing Option TCL 11 Carbon Graphite Packing Option G1 12 Graphoil Packing Option G2 12 Graphoil Live Loaded Packing Option G2L 13 Graphoil Dual Seal Packing Option G2D 14 Graphoil Dual Seal Live Loaded Packing Option G2LD 15 Torque Specification 17 Seat Replacement Removing Valve From Pipeline 20 Replacing the Seat 20 Resilient Seat Options TT TI RT and RI 21...

Страница 4: ...s for 12 300mm and smaller valves or 12 fps 3 6 m s for 14 350mm and larger valves it is recommended to install the valve at least 8 diameters from the nearest upstream elbow or pump For best performance results install valve shaft parallel with elbow or pump cross section see image below For more specific installation recommendations contact your local representative or DeZURIK for assistance Val...

Страница 5: ...tation of the valve shaft closes the disc into the seat A line on the top of the valve shaft indicates the position of the disc when the disc is not visible The valve is fully closed when the flat side of the disc is parallel with the flange sealing surface on the body The valve is fully open when the disc is 90 counterclockwise from the closed position Note The closed disc should not touch the st...

Страница 6: ...DeZURIK BHP High Performance Butterfly Valves D10503 Page 6 November 2015 Drawings Figure 1 Component Identification ...

Страница 7: ...ude a flat washer A37 and several spring washers A36 under each gland nut When required the gland consists of two pieces gland A12 and gland plate A39 5 Remove the retaining ring A46 from the shaft A4 6 Remove the packing washer A10 and all of the packing A11 7 If the valve has the dual packing option remove the secondary packing chamber A17 the gasket A16 and the secondary packing A26 8 Remove an...

Страница 8: ...condary packing chamber A17 and the lantern ring A18 in the configuration shown in Figure 2 c Place the secondary upper set of packing A26 in the secondary packing chamber A17 one ring at a time do not lubricate Start each chevron ring into the packing chamber at a slight angle and push each ring carefully into position so that the sealing lips do not bend over d Place the packing washer A10 in th...

Страница 9: ...r more chevron rings and one top end ring Figure 3 Packing Option TC a Place the packing in the body one ring at a time in the configuration shown in Figure 3 Do not lubricate Note Start each chevron ring into the packing chamber at a slight angle and push each ring carefully into position so that the sealing lips do not bend over b Place the packing washer A10 into the packing chamber c Install t...

Страница 10: ...s shown in Figure 4 do not lubricate b Place the new gasket A16 the secondary packing chamber A17 and the new secondary packing A26 one ring at a time in the configuration shown in Figure 4 do not lubricate Note Start each chevron ring into the packing chamber at a slight angle and push each ring carefully into position so that the sealing lips do not bend over c Place the packing washer A10 into ...

Страница 11: ...and push each ring carefully into position so that the sealing lips do not bend over b Place the packing washer A10 into the packing chamber c Lubricate the following surfaces The threads of the two studs A14 The threads and contact faces of the two gland nuts A15 d Install the retaining ring A46 into the groove in the shaft e Replace the gland A12 the new spring washers A36 the two flat washers A...

Страница 12: ...oove in the shaft A4 d Replace the gland A12 and the two gland nuts A15 e Tighten the nuts finger tight plus turn f Continue with step 10 on page 16 Graphoil Packing Option G2 The new packing consists of three or more Graphoil rings A11 between two anti extrusion washers A34 Figure 7 Packing Option G2 a Lubricate the inside and outside diameters of each new packing ring with Krytox 240 AC lubrican...

Страница 13: ...side and outside of each new packing ring The threads of the two studs A14 The threads and contact faces of the two gland nuts A15 b Place the new packing A11 and anti extrusion washers A34 in the body one ring at a time in the configuration shown in Figure 8 c Place the packing washer A10 into the packing chamber d Install the retaining ring A46 into the groove in the shaft A4 e Replace the gland...

Страница 14: ...ring at a time as shown in Figure 9 c Remove the two gland studs A14 from the secondary packing chamber A17 and temporarily place the studs in the threaded holes in the body d Place the gland A12 and nuts A15 on the studs and turn the nuts evenly until the gland has moved about 25 of the distance from the bottom of the gland to the top of the body e Remove the nuts the gland and the studs and repl...

Страница 15: ...as shown in Table A page 17 for Class 150 valves and in Table B page 18 for Class 300 valves Figure 10 Packing Option G2DL a Follow steps a through e in G2D section b Place the following components in the configuration shown in Figure 10 The new gasket A16 The secondary packing chamber A17 The lantern ring A18 the two new packing rings A26 one ring at a time Anti extrusion washers A34 Packing wash...

Страница 16: ... the actuator on the valve see actuator instructions 12 If the actuator is a powered actuator reconnect power to the actuator 13 Actuate the valve If necessary adjust the position stops see actuator instructions 14 Pressurize the valve 15 If the packing leaks tighten the gland nuts evenly and slowly just enough to stop the leak 16 If the valve has dual packing remove the pipe plug from one of the ...

Страница 17: ...5 6 0 5 0 67 0 05 4 100 6 0 5 0 67 0 05 6 5 125 11 0 5 1 2 0 05 8 0 551 14 00 0 283 7 19 0 014 0 35 0 032 0 81 6 150 16 1 1 8 0 11 5 0 709 18 00 0 323 8 20 0 020 0 50 0 043 1 09 8 200 19 1 2 1 0 11 6 10 250 23 1 2 5 0 11 7 12 300 43 2 4 8 0 22 4 0 787 20 00 0 402 10 21 0 035 0 89 0 057 1 45 14 350 43 2 4 8 0 22 16 400 45 2 5 0 22 18 450 59 2 6 6 0 22 6 0 984 25 00 0 480 12 19 0 028 0 71 0 063 1 60...

Страница 18: ... 65 14 0 5 1 5 0 05 10 3 75 16 1 1 8 0 11 6 0 551 14 00 0 283 7 19 0 020 0 50 0 035 0 89 4 100 28 1 3 1 0 11 8 5 125 40 1 4 5 0 11 7 0 630 16 00 0 323 8 20 0 024 0 61 0 041 1 04 6 150 49 2 5 5 0 22 8 8 200 59 2 6 6 0 22 4 0 630 16 00 0 323 8 20 0 035 0 89 0 049 1 24 10 250 110 3 12 4 0 33 8 0 984 25 00 0 480 12 19 0 035 0 89 0 063 1 60 12 300 126 3 14 2 0 33 14 350 152 3 17 1 0 33 7 1 100 27 94 0 ...

Страница 19: ...4 20 8 13 1 18 1 5 8 125 200 5 16 18 27 4 37 5 10 250 3 8 16 5 41 5 56 10 12 16 300 400 1 2 13 99 13 135 18 18 and 20 450 500 5 8 11 200 20 272 27 24 36 550 900 5 8 11 180 20 244 27 42 and 48 1050 1200 3 4 10 330 40 447 54 300 2 3 50 150 1 4 20 8 13 1 18 1 4 6 100 150 5 16 18 27 4 37 5 8 200 3 8 16 5 41 5 56 10 10 12 250 300 1 2 13 99 13 135 18 14 350 5 8 11 200 20 272 27 16 24 400 600 5 8 11 180 ...

Страница 20: ... damage it Do not fasten lifting devices to the actuator or disc or through the seat opening in the body Lift the valve with slings fastened around the valve body or attach them to bolts or rods run through holes for the pipeline flanges Replacing the Seat 1 Place the valve in a horizontal position with the seat side up 2 Refer to Figure 1 page 6 for component identification 3 Remove the seat reta...

Страница 21: ...on the closed disc b On valve sizes 5 10 125 250mm only center seat retainer gasket A6 in position on the body c Apply a media compatible rust inhibitor to the threads of the seat retainer screws A23 Mount the seat retainer A20 to the body with the seat retainer screws and tighten the screws as shown in Table D page 23 d Continue with step 7 on page 24 Figure 11 Resilient Seat Option Figure 11 Pre...

Страница 22: ... compatible rust inhibitor to the threads of the seat retainer screws A23 f With all components centered mount the seat retainer A20 to the body with the seat retainer screws Tighten the screws as shown in Table D page 23 g If the valve to actuator connection was loosened in step a re tighten the connection h Adjust the packing gland nuts A15 as described in the Packing Adjustment section If the p...

Страница 23: ... media compatible rust inhibitor to the threads of the seat retainer screws A23 f With all components centered mount the seat retainer A20 to the body with the seat retainer screws Tighten the screws as shown in Table D g If the valve actuator connection was loosened in step a tighten the connection h Adjust the packing gland nuts A15 as described in the Packing Adjustment section i Continue with ...

Страница 24: ... or rods run through holes for the pipeline flanges 4 Remove the actuator and the actuator bracket from the valve 5 Remove the two gland nuts A15 and remove the gland A12 Note Live loaded packing options include a flat washer A37 and several spring washers A36 under each gland nut When required the gland consists of a two piece gland A12 and gland plate A39 6 Remove the retaining ring A46 from the...

Страница 25: ...aft A4 from the body and remove the disc Bearing Replacement Bearing Removal 1 Remove the upper bearing A2 from the body through the packing chamber 2 Remove the lower bearing A2 from the body through the pipe plug cover access located on the bottom of the valve Bearing Replacement 1 Apply a light coat of media compatible grease to the inside diameter of the bearings A2 a If bearing has a fabric l...

Страница 26: ...lightly to seat the pin against the flat on the shaft A4 A new set screw A24 is required c Apply Loctite 271 to the set screw threads d Turn the set screw into the end of the pin and tighten the set screw as shown in Table F page 27 e As shown in Figure 14 page 28 stake the end of the set screw threads once with a pointed punch to secure the set screw in position On valve sizes 14 350mm and larger...

Страница 27: ...1 2 13 screws to 38 5 ft lbs 52 6 Nm 5 8 11 screws to 77 10 ft lbs 104 14 Nm and 3 4 10 screws to 140 18 ft lbs 190 24 Nm 9 Mount the actuator bracket on the valve and tighten the screws as shown in Table A page 17 10 Re mount the actuator on the valve see actuator instructions 11 Actuate the valve If necessary adjust the actuator position stops Note The closed disc should not touch the stop lug i...

Страница 28: ...DeZURIK BHP High Performance Butterfly Valves D10503 Page 28 November 2015 Valve Reassembly Continued Figure 14 Disc Pin Assembly ...

Страница 29: ...ce disc pins and or shaft Valve does not fully open Open position stop is not adjusted correctly Adjust open stop Disc to shaft connection has failed Replace disc pins and or shaft Opening or closing torque is excessive Bearings shaft disc and or seat are dirty or worn Clean or replace dirty or worn components Shaft is bent Replace shaft Seat leakage and or damage to seat has occurred Media is abr...

Страница 30: ...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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