Related Manuals for MSI LT
Summary of Contents for MSI LT
- Page 1 LT VALVE TECHNICAL MANUAL MSI is a division of Dixie Iron Works, Ltd. 300 West Main St. Alice, Texas 78332 Phone: 1-800-242-0059 Phone: 1-361-664-6597 Fax: 1-361-664-4840 Email: sales@diwmsi.com Revision D April 03, 2014...
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Page 2: Table Of Contents
MSI LT VALVE TECHNICAL MANUAL TABLE OF CONTENTS 1.0 FEATURES ......................3 1.1 SAFE-TAP™ GREASE FITTING ............... 4 1.2 GREASEAL™ PLUG ..................5 2.0 EXPLODED VIEW ....................6 2.1 PARTS LIST ...................... 7 3.0 ASSEMBLY PROCEDURE – UNISERT™ TYPE ........8 3.1 ASSEMBLY PROCEDURE –... -
Page 3: Features
API Flanged, Tool Joint, Clamp Hub, and our own metal-to-metal WingSeal (WS20 and WS30) are just a few of the available choices. All sizes of MSI valves can be outfitted with your choice of end connections or combinations to suit your specific application. -
Page 4: Safetap™ Grease Fitting
MSI LT VALVE TECHNICAL MANUAL 1.1 SAFETAP™ GREASE FITTING SafeTap™ grease fittings are designed to provide maximum safe operation in the field. These fittings are standard in all new LT valves. Key features include: The unique metal-to- metal seal eliminates wetted threads and pipe taps. -
Page 5: Greaseal™ Plug
MSI LT VALVE TECHNICAL MANUAL 1.2 GREASEAL™ PLUG The patented GreaSeal™ plug is designed to provide maximum lubrication in the harshest field conditions. Key features include: The only plug that allows greasing in the opened or closed position while in service. -
Page 6: Exploded View
MSI LT VALVE TECHNICAL MANUAL 2.0 EXPLODED VIEW Revision D April 03, 2014... -
Page 7: Parts List
MSI LT VALVE TECHNICAL MANUAL 2.1 PARTS LIST QTY REQ’D DESCRIPTION PLUG BOLT WASHER (SMALL) WASHER (LARGE) HANDLE ADAPTER STOP COLLAR RESILIENT SEAL SAFETAP™ GREASE FITTING VALVE BODY PLUG SEAL PLUG GreaSeal™ PLUG INSERT O-RING UNIsert™ INSERT SET (SPLIT) ADJUSTING NUT O-RING... -
Page 8: Assembly Procedure - Unisert™ Type
MSI LT VALVE TECHNICAL MANUAL 3.0 ASSEMBLY PROCEDURE – UNISERT™ TYPE NOTE: It is imperative that the workstation being used to assemble the valve be clean and free of anything that could possibly contaminate the grease such as metal shavings, dirt, rust, old paint, etc. Do not sand or deburr near the workstation. - Page 9 MSI LT VALVE TECHNICAL MANUAL Apply a thin film of lubricant to the recess in the valve body (8) and install the plug seal (9) with the metal back towards the recess facing away from the pressure. Apply a thin film of...
- Page 10 MSI LT VALVE TECHNICAL MANUAL Check the surface finish of the UNIsert™ (12) making sure it does not have any scratches, dings, nicks or sharp edges that could also affect the sealing area. See SANDING TIPS for repair. Inspect the adjusting nut o-ring (13) for any possible non-conformity.
- Page 11 MSI LT VALVE TECHNICAL MANUAL Place the UNIsert™ (12) on the adjusting nut (14). Apply a thin film of grease to the entire O.D. of the plug (10). Install the lower end of the plug (10) (opposite the hex) in the UNIsert™...
- Page 12 MSI LT VALVE TECHNICAL MANUAL Place the insert o-rings (11) in to the grooves on the UNIsert™ (12) and pack with grease to retain the rings and thoroughly grease the sealing surfaces. Secure the plug (10) to the adjusting nut (14) with the plug bolt (1) and two washers (2 &...
- Page 13 MSI LT VALVE TECHNICAL MANUAL Apply thread compound (Never-Seez) to the adjusting nut threads and adjusting nut sealing surfaces. Support the valve so that the plug (10) hex can pass through unobstructed. Install the plug (10), UNIsert™ (12) and adjusting nut (14) assembly into the valve body.
- Page 14 MSI LT VALVE TECHNICAL MANUAL Screw in the adjusting nut until proper alignment is obtained between the valve bore, the UNIsert™ and plug. Do not tighten beyond proper alignment as actuating an over tightened valve could damage internal parts. If...
- Page 15 MSI LT VALVE TECHNICAL MANUAL Place spiral retainer ring (19) on male end (if required). Then place wing nut (17) on male end and install the nut retainer set (18) (if required). Secure the retainers with spiral retainer ring (if...
- Page 16 MSI LT VALVE TECHNICAL MANUAL Install stop bolt (20). Install stop collar (5). NOTE: Valves with bores smaller than 2” do not use a stop collar, the detent is integral to the handle adapter. Install the handle adapter (4). Revision D...
- Page 17 MSI LT VALVE TECHNICAL MANUAL Secure handle adapter (4) with the plug bolt (1) and washers (2 & 3). Remove excess grease from valve bore. Inspect plug alignment and adjust as necessary with adjusting nut (14). Revision D April 03, 2014...
- Page 18 MSI LT VALVE TECHNICAL MANUAL Grease the counter bore of the valve body female end and press the resilient seal (19) lip end towards the valve in until the lip on the OD of the seal snaps into the groove in the back of the counter bore.
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Page 19: Assembly Procedure - Unisert™ Type (Text)
MSI LT VALVE TECHNICAL MANUAL 3.1 ASSEMBLY PROCEDURE – UNISERT™ TYPE (TEXT) NOTE: It is imperative that the workstation being used to assemble the valve be clean and free of anything that could possibly contaminate the grease such as metal shavings, dirt, rust, old paint, etc. Do not sand or deburr near the workstation. - Page 20 MSI LT VALVE TECHNICAL MANUAL 15. Lubricate the valve pocket with valve grease. 16. Apply thread compound (Never-Seez) to the adjusting nut threads and adjusting nut sealing surfaces. 17. Support the valve so that the plug (10) hex can pass through unobstructed.
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Page 21: Assembly Procedure - Split Insert Type
MSI LT VALVE TECHNICAL MANUAL 3.2 ASSEMBLY PROCEDURE – SPLIT INSERT TYPE NOTE: It is imperative that the workstation being used to assemble the valve be clean and free of anything that could possibly contaminate the grease such as metal shavings, dirt, rust, old paint, etc. Do not sand or deburr near the workstation. - Page 22 MSI LT VALVE TECHNICAL MANUAL Apply a thin film of lubricant to the recess in the valve body (8) and install the plug seal (9) with the metal back towards the recess facing away from the pressure. Apply a thin film of...
- Page 23 MSI LT VALVE TECHNICAL MANUAL Apply grease to the plug seal (9) in the adjusting nut (14). Install the lower end of the plug (10) (opposite the hex) in the adjusting nut (14) and push down until the plug shoulders on the adjusting nut.
- Page 24 MSI LT VALVE TECHNICAL MANUAL Check the surface finish of the inserts (12) making sure they do not have any scratches, dings, nicks or sharp edges that could affect the sealing area. 8.2 SANDING TIPS for repair. Inspect the insert o-rings (11) for any possible non- conformity.
- Page 25 MSI LT VALVE TECHNICAL MANUAL Install the insert o-rings (11) into the insert (12) grooves and coat with grease to retain the rings. Make sure the entire sealing surface is thoroughly greased. Secure the plug to the adjusting nut with the plug bolt (1) and washers (2 &...
- Page 26 MSI LT VALVE TECHNICAL MANUAL Lubricate the valve pocket with valve grease. Apply thread compound (Never-Seez) to the adjusting nut threads and adjusting nut sealing surfaces. Install the plug (10), inserts (12) and adjusting nut (14) assembly into the valve body.
- Page 27 MSI LT VALVE TECHNICAL MANUAL Support the valve so that the plug (10) hex can pass through unobstructed. Tighten the adjusting nut (14) until snug and back off ¼ turn from snug position. Apply thread compound (Never Seez) to the threads on the SafeTap™...
- Page 28 MSI LT VALVE TECHNICAL MANUAL Place spiral retainer ring (19) on male end (if required). Then place wing nut (17) on male end and install the nut retainer set (18) (if required). Secure the retainers with spiral retainer ring (if...
- Page 29 MSI LT VALVE TECHNICAL MANUAL Install stop bolt (20). Install stop collar (5) and handle adapter (4). NOTE: Valves with bores smaller than 2” do not use a stop collar, the detent is integral to the handle adapter. Secure handle adapter (4) with the plug bolt (1) and washers (2 &...
- Page 30 MSI LT VALVE TECHNICAL MANUAL Remove excess grease from valve bore. Inspect plug alignment and adjust as necessary with adjusting nut (14). Grease the counter bore of the valve body female end and press the resilient seal (19) in until the lip...
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Page 31: Assembly Procedure - Split Insert Type (Text)
MSI LT VALVE TECHNICAL MANUAL 3.3 ASSEMBLY PROCEDURE – SPLIT INSERT TYPE (TEXT) NOTE: It is imperative that the workstation being used to assemble the valve be clean and free of anything that could possibly contaminate the grease such as metal shavings, dirt, rust, old paint, etc. Do not sand or deburr near the workstation. - Page 32 MSI LT VALVE TECHNICAL MANUAL 14. Make sure the entire sealing surface is thoroughly greased. 15. Secure the plug to the adjusting nut with the plug bolt (1) and washers (2 & 3). 16. Lubricate the valve pocket with valve grease.
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Page 33: Exploded View (5 Inch )
MSI LT VALVE TECHNICAL MANUAL 4.0 EXPLODED VIEW (5” VALVE) Revision D April 03, 2014... -
Page 34: Parts List
MSI LT VALVE TECHNICAL MANUAL 4.1 PARTS LIST (5” VALVE) QTY REQ’D DESCRIPTION VALVE BODY SAFETAP™ GREASE FITTING STUDS NUTS PLUG SEAL PLUG GreaSeal™ PLUG UNIsert™ INSERT SET (SPLIT) INSERT O-RING O RING, FACE SEAL RING SEAL RING O RING, ADJUSTING NUT... -
Page 35: Assembly Procedure - Unisert™ Type (5 Inch)
MSI LT VALVE TECHNICAL MANUAL 5.0 ASSEMBLY PROCEDURE – UNISERT™ TYPE (5” VALVE) NOTE: It is imperative that the workstation being used to assemble the valve be clean and free of anything that could possibly contaminate the grease such as metal shavings, dirt, rust, old paint, etc. Do not sand or deburr near the workstation. - Page 36 MSI LT VALVE TECHNICAL MANUAL Apply a thin film of lubricant to the recess in the adjusting nut (12) and install the plug seal (5) with the metal back towards the recess facing away from the pressure. Apply grease to the plug seal (5) in the adjusting nut (12).
- Page 37 MSI LT VALVE TECHNICAL MANUAL Apply a thin film of lubricant to the pocket and the recess in the valve body (1) and install the plug seal (5) with the metal back towards the recess facing away from the pressure.
- Page 38 MSI LT VALVE TECHNICAL MANUAL Install the plug (6) (hex side down) in the valve body. Check the surface finish of the insert (7) making sure they do not have any scratches, dings, nicks or sharp edges that could affect the sealing area.
- Page 39 MSI LT VALVE TECHNICAL MANUAL Install the insert o-rings (8) into the insert (7) grooves and coat with grease to retain the rings. Make sure the entire sealing surface is thoroughly greased. Apply a thin film of grease to the entire I.D. of the insert (7).
- Page 40 MSI LT VALVE TECHNICAL MANUAL Place the insert (7) around the plug (6) in the valve body making sure it slides into the roll pins. Apply thread compound (Never-Seez) to the adjusting nut threads and adjusting nut sealing surfaces. Grease the seal ring (10) groove and insert the o ring (9) over it.
- Page 41 MSI LT VALVE TECHNICAL MANUAL Place the seal ring (10) on the top of the insert (7). Install the adjusting nut (12) into the valve body and tighten until snug and back off ¼ turn from the snug position. Apply thread compound...
- Page 42 MSI LT VALVE TECHNICAL MANUAL Apply thread compound (Never Seez) to the threads on the SafeTap™ grease fitting (2). Install grease fitting and torque to 80 ft- lbs. NOTE: Do not use Teflon tape on the grease fitting. Remove excess grease from valve bore.
- Page 43 MSI LT VALVE TECHNICAL MANUAL Apply Removable Threadlocker (blue) in the threads of the stud end and screw the studs (3) until tight. Screw the nuts (4) on the studs (3). Note: Do not use High Strength (red) Threadlocker Revision D...
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Page 44: (Text)
MSI LT VALVE TECHNICAL MANUAL 5.1 ASSEMBLY PROCEDURE- UNISERT™ TYPE (5” VALVE) (TEXT) NOTE: It is imperative that the workstation being used to assemble the valve be clean and free of anything that could possibly contaminate the grease such as metal shavings, dirt, rust, old paint, etc. Do not sand or deburr near the workstation. - Page 45 MSI LT VALVE TECHNICAL MANUAL 14. Make sure the entire sealing surface is thoroughly greased. 15. Apply a thin film of grease to the entire I.D. of the insert (7). 16. Place the insert (7) around the plug (6) in the valve body (1) making sure it slides into the roll pins.
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Page 46: Assembly Procedure -Split Insert Type (5 Inch)
MSI LT VALVE TECHNICAL MANUAL 5.2 ASSEMBLY PROCEDURE- SPLIT INSERT TYPE (5” VALVE) NOTE: It is imperative that the workstation being used to assemble the valve be clean and free of anything that could possibly contaminate the grease such as metal shavings, dirt, rust, old paint, etc. Do not sand or deburr near the workstation. - Page 47 MSI LT VALVE TECHNICAL MANUAL Apply a thin film of lubricant to the recess in the adjusting nut (12) and install the plug seal (5) with the metal back towards the recess facing away from the pressure. Apply grease to the plug seal (5) in the adjusting nut (12).
- Page 48 MSI LT VALVE TECHNICAL MANUAL Apply a thin film of lubricant to the pocket and the recess in the valve body (1) and install the plug seal (5) with the metal back towards the recess facing away from the pressure.
- Page 49 MSI LT VALVE TECHNICAL MANUAL Install the plug (6) (hex side down) in the valve body. Check the surface finish of the inserts (7) making sure they do not have any scratches, dings, nicks or sharp edges that could affect the sealing area.
- Page 50 MSI LT VALVE TECHNICAL MANUAL Install the insert o-rings (8) into the insert (7) grooves and coat with grease to retain the rings. Make sure the entire sealing surface is thoroughly greased. Apply a thin film of grease to the entire I.D. of the insert set (7).
- Page 51 MSI LT VALVE TECHNICAL MANUAL Place the inserts (7) around the plug (6) in the valve body making sure it slides into the roll pins. Apply thread compound (Never-Seez) to the adjusting nut threads and adjusting nut sealing surfaces. Grease the seal ring (10) groove and insert the o ring (9) over it.
- Page 52 MSI LT VALVE TECHNICAL MANUAL Place the seal ring (10) on the top of the inserts. Install the adjusting nut (12) into the valve body and tighten until snug and back off ¼ turn from the snug position. Apply thread compound...
- Page 53 MSI LT VALVE TECHNICAL MANUAL Apply thread compound (Never Seez) to the threads on the SafeTap™ grease fitting (2). Install grease fitting and torque to 80 ft- lbs. NOTE: Do not use Teflon tape on the grease fitting. Remove excess grease from valve bore.
- Page 54 MSI LT VALVE TECHNICAL MANUAL Apply Removable Threadlocker (blue) in the threads of the stud end and screw the studs (3) until tight. Screw the nuts (4) on the studs (3). Note: Do not use Red High Strength Threadlocker Revision D...
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Page 55: Assembly Procedure -Split Insert Type (5 Inch) (Text)
MSI LT VALVE TECHNICAL MANUAL 5.3 ASSEMBLY PROCEDURE- SPLIT INSERT (5” VALVE) (TEXT) NOTE: It is imperative that the workstation being used to assemble the valve be clean and free of anything that could possibly contaminate the grease such as metal shavings, dirt, rust, old paint, etc. Do not sand or deburr near the workstation. - Page 56 MSI LT VALVE TECHNICAL MANUAL 13. Install the insert o-rings (8) into the insert (7) grooves and coat with grease to retain the rings. 14. Make sure the entire sealing surface is thoroughly greased. 15. Apply a thin film of grease to the entire I.D. of the insert set (7).
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Page 57: Disassembly Procedure
MSI LT VALVE TECHNICAL MANUAL 6.0 DISASSEMBLY PROCEDURE Note: If handle adapter (4) or adjusting nut (14) appears to be stuck or locked, pressure may be trapped in the valve. This is also known as “pressure locking.” Do not attempt to disassemble a “pressure locked” valve. See section DISASSEMBLY TIPS for pressure relieving procedures. -
Page 58: Maintenance
If the valve is NOT pressurized, MSI recommends greasing the valve to a minimum of 3,000 psi greasing pressure. If the valve is pressurized (and a Greaseal™ plug is being used), the greasing pressure needs to be greater than the internal pressure of the valve, but always less than the rated working pressure of the valve. -
Page 59: Repair And Inspection
MSI LT VALVE TECHNICAL MANUAL 8.0 REPAIR AND INSPECTION When repairing a MSI plug valve, the following basic guidelines can help you ensure a good hydrostatic test of the reassembled valve. Disassemble the valve completely. See section 6.0 DISASSEMBLY PROCEDURES for detailed instructions on valve disassembly. - Page 60 Continued use of parts with eroded flow bores may reduce the life of the valve body. MSI recommends that valves with working but washed parts within these guidelines be used in locations of the rig-up that see less abrasive flow.
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Page 61: Disassembly Tips
MSI LT VALVE TECHNICAL MANUAL 8.1 DISASSEMBLY TIPS Note: If handle adapter (4) or adjusting nut (14) appears to be stuck or locked, pressure may be trapped in the valve. This is also known as “pressure locking.” Do not attempt to disassemble a “pressure locked” valve. -
Page 62: Sanding Tips
MSI LT VALVE TECHNICAL MANUAL 8.2 SANDING TIPS When repairing a MSI plug valve, the following basic guidelines can help you ensure a successful hydrostatic test of the reassembled valve. Sanding is necessary to repair blemishes from the sealing surfaces of parts. -
Page 63: Assembly Tips
MSI LT VALVE TECHNICAL MANUAL 8.3 ASSEMBLY TIPS When repairing a MSI plug valve, the following basic guidelines can help you ensure a good hydrostatic test of the reassembled valve. If you choose to mix old and new parts, you must make absolutely sure that the old part does not have any defects. -
Page 64: Storage
MSI LT VALVE TECHNICAL MANUAL 9.0 STORAGE Disassemble the valve completely. See section 6.0 DISASSEMBLY PROCEDURES for detailed instructions on valve disassembly. Remove old grease and debris from valve pocket with a solvent and inspect for wear or damage per 8.0 REPAIR AND... -
Page 65: Shelf Life
MSI LT VALVE TECHNICAL MANUAL 9.1 SHELF LIFE The following is recommended for maximum equipment shelf life: # of Months in Manufacturers Recommendations Storage 0-3 months Nothing required 3-6 months Re-grease and operate. Operate by rotating the plug. Check to see that rotation is smooth without grinding or scraping. -
Page 66: Accessories
MSI LT VALVE TECHNICAL MANUAL 10.0 ACCESSORIES Use only MSI recommended accessories. MSI Part Number Description VC0393 Valve Operating Bar Revision D April 03, 2014... -
Page 67: Greases
MSI LT VALVE TECHNICAL MANUAL 10.1 GREASES Use only MSI recommended greases. Greases intended for gate valves or other applications may result in failure to achieve a good test and may actually damage the new parts. Manufacturer's MSI Part Number... -
Page 68: Grease Requirements
MSI LT VALVE TECHNICAL MANUAL 10.2 GREASE REQUIREMENTS Valve Size Approximate amount of grease “K” size stick 1” VALVE ⅓ STICK 2” VALVE ½ STICK 3” VALVE 1 STICK 4” VALVE 3 STICKS 5” VALVE 5 STICKS Revision D April 03, 2014... -
Page 69: Actuators
MSI LT VALVE TECHNICAL MANUAL 10.3 ACTUATORS MSI uses the following brands of actuators. Information is available by clicking on the hyperlinks. Pneumatic El-O-Matic Hydraulic Damcos Gear Operated Williams Machine Revision D April 03, 2014... -
Page 70: Rubber Products
MSI LT VALVE TECHNICAL MANUAL 10.4 RUBBER PRODUCTS MSI offers many 0-ring and plug seal materials for a variety of environmental and operating conditions. Revision D April 03, 2014...
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