O PERATING A N D M AINTENANCE I N S T R U C T I O N S H alliburton Lo Torc ® Plug Plug Valve — 1 -in. and 1 .3-in. Bore Sizes Sizes A SSEMBLING T H E V ALVES 1. Install Install the seals seals inside inside the p lug body and the adjusting adjusting nut. 2. Install Install the the retaining retaining pins in the body and p lace lace an O-ring O-ring on the adjusting nut an d O -rings -rings on th e outside of the inserts. inserts. 3. Coat the plug, the inserts inserts,, and the adjusting adjusting nut threads threads and fill fill the void spaces inside inside the body and the adjusting nut w ith the recommended plug-valve lubricant (Part No. 70.31058). 4. Place Place the plug throu gh the ad justing nu t. For For a 1-in. 1-in. valve, valve, leave space space for for the insert lips lips betw een the plug an d th e adjusting nut. 5. Place Place the insert insertss on the p lug and align align the fluid fluid passage holes through the inserts with the hole through the p lug. 6. Fasten Fasten the plug and the inserts inserts to to the adjusting adjusting nut w ith ith the capscrew capscrew and the washers. 7. Place Place the plug and the inserts inserts into into the body with the retaining retaining pins in the bod y protru ding into the slots in in the inserts. 8. Screw Screw the adjusting adjusting nu t into the body w hile rotating the plug to distribute excess lubricant. 9. Place Place the the hand le adapter on the plug w ith ith the ad apter flow-i flow-indica ndicator tor lugs aligned aligned with the slots on the operating end of the plug. The The cutout on th e bottom of the hand le adapter fits over over the stop capscrew. capscrew. Caution Caution
Assemble these par parts proper properly ly.. Impr Improper oper assembly of these parts can result in poor valve performance or unsafe ope rating charact characteristics. eristics.
10. 10. Fasten Fasten the handle adapter to the the plug w ith the capscr capscrew ew and the washers.
A DJUSTING A N D O PERATING T H E V ALVES AT Z ERO P RESSU RESSU RE Set Set and mainta in the plu g operatin g torqu e at app roximately 30 30 to 40 40 lb-f lb-ft. t. The operating torque can be d ecreas ecreased ed by screwing screwing the adjusting adjusting n ut out of the bod y, but this setting setting can allow leakage throu gh the va lve. Use the hand le adapter on the valve to open an d close the valve. The handle adap ter on the valve is locate located d on the op posite end from the ad justing end. View operation (opening and closing the valve) from the operating end (the
Parts List 1 . B od od y 2 . H a n d l e A d a p t er er 3 . G r e a se se Fi Fi t t i n g 4 . W a sh sh e r 5 . L o c k w a sh sh e r 6 . C ap a p sc sc r ew ew 7 . A d j u s titi n g N u t 8 . O - riri n g 9 . P l u g Se a l 10. Insert (set) (set) 1 1 . O - r in in g 12. Plug 13. Retaining Pin 1 4 . W a sh sh e r 1 5 . St o p C a p sc sc r e w
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H alliburton Lo Torc ® Plug Valve – 2-in. and Larger Sizes Because of th e Lo Torc Plug Valve’s wide ran ge of ap plication, no specific frequ ency of maintena nce or inservice inspection can be recomm ended . Periodic, frequen t inspections of each valve will help you pred ict the life or u sefulness of the plu g and the inserts. Replacing these parts when th ey are eroded or worn will help prevent any erosion of the bod y.
D ISASSEM BLIN G AN D A SSEM BLIN G TH E V ALVES 1. Remove the wrench (Loc. 15) or the hand le adap ter (Loc. 2) with th e stop collar (Loc. 14). 2. Loosen the adjusting nut w ith the operating bar or the hex wrench. Remove the adjusting n ut, the plu g (Loc. 12), and th e insert s (Loc. 10). If necessary, place a wood block on top of the plu g stem and tap downward. 3. Inspect the valve bod y (Loc. 1) for interior erosion or pitting. Caution
If seal surfaces have deteriorated, remove the valve from service. Otherwi se, leakage could result.
4. Replace the O-rings (Loc. 11) on th e inserts if necessary. handle-adapter end) where a clockwise rotation closes the valve. The flow-indicator lugs on the handle adapter indicate the direction of the fluid hole through the plug. Keep the flow-indicator lugs in line with th e flow indicator slots on the plug.
M A I N T A I N I N G AN D I NSPECTING TH E V ALVES To repair valves in the line, remove the h and le adap ter and screw the adjusting nu t counterclockw ise. It is not necessary to remove the p lug from the ad justing nu t if the p lug is still serviceable. Assemble new inserts with O-rings on the p lug as d escribed in Step 4 on Page 1. Caution
Caution
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Do not weld the bodies of valves. Valve b odi es are made of h eat-treated alloy steel that should not be welded. Since the inserts can wash out and erode the b ody b efore leakage is noted, insp ect valves regularly to de termine the approximate lif e of the ins erts and plugs. Continued use o f worn plugs and inse rts will s horten the lif e of the body cons iderably.
5. Replace the O-ring sealing the ad justing nu t if the O-ring is worn . 6. Replace the p lug-stem p acking (Loc. 9) at the top and bottom of the p lug if necessary. 7. Replace the inserts with standard parts if the valve has show n signs of leakage or if the inserts show any excessive w ear or p itting. 8. Wipe all old lub ricant from inside th e valve body.
R EASSEM BLIN G TH E V ALVE 1. Install O-rings in the recesses of the inserts and in the adjusting nut groove. 2. Install the plug stem seals (Loc. 9) in the recesses in the top of the valve body and in the adjusting nu t. 3. Coat the cleaned plug, the inserts, and th e adjusting nu t threads with the recomm ended plu g-valve lubricant. Fill the void sp aces inside the valves with th e same lubricant. This lubricant can be ordered in 3 / 4-lb packages un der Part No. 70.31058. 4. Install the lower end of the plug through the adjusting nut and push the p lug down to the shoulder.
5. Use the capscrews, the flat washer, and th e lock washer to secure the ad justing plug to the adjusting nut. 6. Tighten the capscrew. 7. Verify that the insert retaining p ins (Loc. 13) inside the bod y are p ositioned p roperly.
Extremely high working pressures can require higher torqu e values to p roperly seal the valve. If so, this higher torque adjustment shou ld be m aintained by checking the ad justing nu t at regular intervals. Caution
Do not weld the bodies of valves. Valve b odi es are made of h eat-treated alloy steel that should not be welded.
Caution
Since the inserts can wash out and erode the bod y befo re leakage is detected, insp ect valves regularly to determine the approximate life of the inserts and plugs. Continued use of wo rn plug s and inse rts will shorten the life of the body cons iderably.
8. Place the inserts on the adjusting nut around the plug. 9. Align the flow holes in the inserts with the hole through the plug. 10. Place the plug, the inserts, and the adjusting nu t into the valve body so th at the insert retaining p ins slide into the slots in the inserts. 11. Tighten the adjusting nut into the body w ith the prescribed torque for ad equate sealing (see A djust ing the Valve at Z ero Pressure), rotating the p lug wh ile tightening it to d istribute th e lubricant. 12. Install the stop collars and the hand le adap ter (or w rench) on top of the valve. Be sure th e flow indicator lugs of the han dle ada pter are aligned with the slot in the top stem of the plug. Note:
Improper assembly of these parts can result in poor valve p erformance or unsafe operating characteristics.
13. Lubricate the valve through th e grease fitting (Loc. 3) on top of the v alve bod y (if the va lve has a fitting) to en sure tota l filling of th e void spa ces inside the valve.
A DJUSTING TH E V ALVE AT Z ERO P RESSU RE Ad justing a Lo Torc® Plug Valve properly is imperative to maintain tight sealing u nd er pressure. The inserts should be adjusted to p rovide the torqu e to rotate the plug. [This adjustment is mad e by tightening or loosening the ad justin g n ut (Loc. 7).] Table 1—Adjusting the Valve at Zero Pressure
Valve Size (in.)
Torque (lb-ft)
1
30 to 40
1.3
40 to 60
2
40 to 60
2 / 2
1
50 to 60
3
60 to 70
4
70 to 80
Note:
Valves with Teflon material-lined inserts should be adjusted to app roximately two-thirds of the torque ratings in Table 1.
Table 2—Lo Torc Plu g Valve s Re pair Kits Size in. (mm) 1 (25.4) 1 (25.4) 1 (25.4) 1 (25.4) 1.3 (33.0) 1.3 (33.0) 1.3 (33.0) 1.75 (44.6) 1.75 (44.6) 1 2 / 16 (52.4) 1 2 / 16 (52.4) 1 2 / 16 (52.4) 1 2 / 16 (52.4) 1 3 / 8 (79.4) 1 3 / 8 79.4) 1 3 / 8 (79.4) 1 3 / 16 (77.8) 1 3 / 16 (77.8) 1 3 / 16 (77.8)
Type of Services
Type of Plug
Type of Insert
Type of Seals
STD
Stnls
Iron
Nitrile
H2S
Monel
Al Brz
Teflon
H2S
Monel
Al Brz
Viton
STD
Monel
Iron
Nitrile
STD
Stnls
Al Brz
Nitrile
H2S
Monel
Al Brz
Teflon
H2S
Monel
Al Brz
Viton
STD
Stnls
Al Brz
Nitrile
STD
Monel
Al Brz
Nitrile
STD
Stnls
Iron
Nitrile
STD
Monel
Iron
Nitrile
H2S
Monel
Al Brz
Teflon
H2S
Monel
Al Brz
Viton
STD
Stnls
Iron
Nitrile
H2S
Monel
Al Brz
Teflon
H2S
Monel
Al Brz
Viton
H2S
Monel
Al Brz
Teflon
STD
Stnls
Al Brz
Nitrile
H2S
Monel
Al Brz
Viton
®
®
®
®
®
Part No. 9.12791 9.12796* 9.12792 9.12797* 9.12793 9.12798* 9.12794 9.12796* 9.82052 9.82056* 9.82053 9.82057* 9.82054 9.82058* 9.12612 9.12615* 9.12613 9.12615* 9.82601 9.82624* 9.82604 9.82624* 9.82605 9.82636* 9.82606 9.82625* 11.51590 11.51603* 11.51591 11.51605* 11.51601 11.51604* 11.92106 11.92119* 11.92108 11.92117* 11.92109 11.92118*
*Includes seals and O-rings only.
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Table 3—Lo Torc Repl aceme nt Parts List Valve Bore Size and Maximum Working Pressure Loc. No.
a
12
10
Quantity Required
1-in. 15,000 Std 10,000 H 2S
1.3-in. 20,000 Std 15,000 H 2S
1.75-in. 15,000 Std 15,000 H2S
2-in. 10,000 Std 10,000 H 2S
2.56-in. 5,000 Std 5,000 H 2S
3.12-in. 5,000 Std 5,000 H2S
3.06-in. 15,000 Std 10,000 H2S
4.06-in. 5,000 Std 5,000 H2S
1 1 1
9.12316 9.12773 9.12345
9.41382 9.81991 9.41398
9.12602 9.12673 9.12634
9.81913 9.50984 9.82628
10.62014 10.50432 10.62019
11.92034 11.51083 11.51610
11.92097 11.50913 11.92121
12.30012 12.30018 12.30026
1 Set 1 Set
9.12308 9.12704
— 9.41384
— 9.12603
9.81914 9.82608
10.62013 10.62018
11.92033 11.92044
— 11.92092
12.30015 12.30025
2 2
9.12302 8.75096
9.12302 8.75096
9.81715 9.81916
9.81715 9.81932
e
9.81715 9.81916
9.81715 9.81916
9.81715 9.81932
9.81715 9.81932
2 2
8.33963 70.90699
8.34021 70.33790
8.34026 70.34087
8.34027 70.33784
8.34031 70.33743
8.33985 70.33746
8.33985 70.33746
8.33796 70.33192
1 1
8.34033 70.33786
8.34037 70.33792
8.34041 70.33755
8.34042 70.34086
8.34051 70.33745
8.34056 70.33748
8.34056 70.33744
8.34082 70.33894
Insert Retaining Pins
2
70.36029
70.36029
70.36029
70.36029
70.36029
70.36029
Insert Retaining Rings
2
—
—
—
—
—
—
Description Plug (Stnls 410/414) Plug (Monel) Plug (316 Stnls) Insert (2 per set) Ductile Iron or Cast Iron Aluminum Bronze
b
Plug Stem Seal (Nitrile)
9
Plug Stem Seal (Teflon)
11
c,d
O-ring Insert (Nitrile) O-ring Insert (Teflon)
c,f
O-ring Adjusting Nut (Nitrile)
8
O-ring Adjusting Nut (Teflon)
13 g
16
c,f
70.36029
9.72786
70.35956
—
a
Monel material and 316 Stainless are for H 2S service. Stainless 410/414 are for standard service.
b
Aluminum bronze is suitable for standard use or H 2S service.
c
Teflon material plug stems and Teflon material O-rings are used in H 2S service valves.
d
®
Plug stem seals are made of Viton material with a stainless steel backup ring: 8.75094 for 1-in. and 1.3-in. sizes; 9.81717 for other sizes.
e
Listed seal fits seal glands of 0.5-in. depth. For glands 0.25-in. depth, use Teflon material seal Part No. 9.81916.
f
®
Viton O-rings are Part No. 7.xxxxx where xxxxx are the same five digits after the decimal point of the Nitrile O-ring part number.
g
Valves with a pin part number for Loc. 16 are inside pin Loc. 13.
Table 4—Lo Torc Acces so ries Description Wrench
Valve Size
Cat. No.
1
9.41343
1
2-in., 2 / 2-in., 3-in., and 4-in. regular opening
Handle Adapter
2-in., 2 / 2-in., 3-in., and 4-in. regular opening
9.50822
Operating Bar
All sizes except 4-in. full opening
9.81713
Operating Wrench
4-in. full opening only
12.69045
HES Stick Lubricant
All sizes (12 sticks per carton)
70.31058
Grease Fitting
All sizes
70.22943
Grease Gun
All sizes
70.24776
Table 5—LoTorc Kit Contents
Part Plug Inserts
Quantity 1 1 set
O-ring (Inserts)
2
O-ring (Adj. Nut) Seals (Stem)
1 2
Lubricant
1
Instructions
1
Sa l e s o f H a l l i b u r t o n p r o d u c t s a n d se r v i c e s w i l l b e i n a c c o r d s o l e l y w i t h t h e t e rm s a n d c o n d i t i o n s c o n t a i n e d i n t h e c o n t r a c t b e tw e e n H a l l i b u r t o n a n d t h e c u s to m e r t h a t i s a p p l i c a b l e t o t h e s a l e. Pa r t N o . 7 0 . 3 1 0 5 9 - A
© 1 9 9 9 H al l i b u rt o n C o m p an y
P r i n t ed i n U . S. A .
