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Bray/McCannalok Cryogenic

High Performance Butterfly Valve

Operation and Maintenance Manual

Содержание MCCANNALOK

Страница 1: ...Bray McCannalok Cryogenic High Performance Butterfly Valve Operation and Maintenance Manual...

Страница 2: ...ation 2 Maintenance 3 Stem Seal Replacement 4 Seat Replacement 5 Disc and Stem Replacement 6 Parts Diagram Bray McCannalok Cryogenic Valve 8 Parts Diagram Bray McCannalok Low Temperature Valve 9 Field...

Страница 3: ...ogenic high performance butterfly valve combines the advantages of trunnion type ball valves with the easy operation light weight and low cost of butterfly valves One basic design is suitable for a wi...

Страница 4: ...The valve is opened by turning counterclockwise closed by turning clockwise The double D flats or keyway at the top of the stem is parallel to the disc edge 3 Verify and check the preferred flow dire...

Страница 5: ...led at a qualified oxygen cleaning facility NOTES 1 Minimum I D of pipe with recommended clearances per API 609 have been calculated by adding the minimum I D with zero clearance to a minimum recommen...

Страница 6: ...t a time Stagger seal ring joints 180 apart when installing Tamp each ring to bottom before installing next ring 6 Install grounding washer 12 on top of the stem seals with the tangs facing down Table...

Страница 7: ...centered with body when positioning seat retainer 9 Wrap the thread of the socket head cap screws with white PTFE Teflon tapes in a clockwise position Step 1 Install the socket head cap screws finger...

Страница 8: ...ed on flat surface to lift body and rotate disc slightly to do this Make sure disc is resting on wood block since it will swing freely on stem with pins removed When pins 4 are out lay body down so di...

Страница 9: ...actuator and operate valve several times to verify proper operation Examine disc and seat for any damage before reinstalling in line Table 5 DRILL SIZE TO REMOVE TACK WELD Valve Size Class in mm 150...

Страница 10: ...3 Stem 4 Taper Pin 5 Disc Spacer 6 Bearing 7 Lock Washer 8S Socket Head Cap Screw 9M Mounting Bracket 10 Thrust Washer 11 Stem Seal 12 Grounding Washer 13 Gland Ring 14 Retaining Ring or Split Rings 1...

Страница 11: ...3 Stem 4 Taper Pin 5 Disc Spacer 6 Bearing 7 Lock Washer 8S Socket Head Cap Screw 9M Mounting Bracket 10 Thrust Washer 11 Stem Seal 12 Grounding Washer 13 Gland Ring 14 Retaining Ring or Split Rings 1...

Страница 12: ...stop for this position Do not allow the valve to over open as this may damage the disc seating surfaces by hitting body or attached piping 4 On gear operators loosen and adjust the closing stop screw...

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