Trunnion Ball Valves

Transcription

1 Trunnion Ball Valves

2 Trunnion Ball Valves Our Trunnion Ball Valve is designed for use in gas applications. This full bore, through conduit valve utilizes a 3 piece, forged steel body, trunnion supported ball and spring loaded floating seats to assure positive shut-off with double block and bleed capabilities. The valve can be trimmed to meet most specific customer requirements. Extensions and adaptation for actuation are options regularly requested and provided. The ball is fixed by trunnion and the seat rings are floating, free to move against the ball along the valve centerline. The trunnion support together with bearings absorb the side load created by the pressure acting on the ball. At low pressure, the tight sealing is assured by the preload of the springs acting on the seat rings. Along with the pressure increasing, the process medium pressure pushes the seat rings against the ball to provide additional load for tight sealing. Features Fire safe design Manufactured and tested to API 6D and ANSI B16.34 specifications Mechanical stops for ball/seat alignment Blow out proof stem Full port, through conduit Double block and bleed NACE trim Repeated positive shut-off Spring energized floating seats Redundant stem seals Self-relieving seats Seat sealant / injection ports (6 and up) Sizes Available 2 through 40 Pressure Classes ANSI 150, 300, 600, 900, 1500, 2500 End Connections Raised Face, Ring Joint, Weld End Options Bare stem, electric or hydraulic actuators Cryogenic service Double piston effect seat / external thermal body relief Customer specified external thermal body relief Standard service Brine service High temp Applications Mainline blocks Launchers / Receivers Compressor stations Filtration and process Meter skids LACT Units Operating Temperatures Standard -20º F to +250º F (-28º C to +121º C) Low Temp to -50º F (-46º F) High Temp to + 550º F ( 288º F)

3 Features Size 2 48 Class Three pieces forged steel body Trunnion mounted ball, full and reduced bore Anti-static device Blow-out proof stem Double block and bleed Fire safe design Emergency sealent injector (6 and larger) Lifting lugs and supporting feet (8 and larger) Seat pocket SS overlay Seat area ENP coated Specifications Design ASME B 16.34/API 6D Face toface ASME B 16.10/API 6D End to end ASME B 16.34/API 6D End flange ASME B 16.5/B A Test API 6D Fire Safe Test API 607/API 6FA Special NACE MR-01-75

4 Trunnion Ball Valves Material Specifications No. Part A105/ENP A105/316 F316/316 LF2/316 NACE 1 Body ASTM A105N ASTM A105N ASTM A182-F316 ASTM A350-LF2 2 Adapter ASTM A105N ASTM A105N ASTM A182-F316 ASTM A350-LF2 3 Ball ASTM A105N/ENP ASTM A182-F316 ASTM A182-F316 ASTM A182-F316 4 Seat insert PTFE/Nylon/Peek PTFE/Nylon/Peek PTFE/Nylon/Peek PTFE/Nylon/Peek 5 Seat ring ASTM A105N/ENP ASTM A182-F316 ASTM A182-F316 ASTM A182-F316 6 Stem ASTM A105N/ENP ASTM A182-F316/17-4PH ASTM A182-F316/17-4PH ASTM A182-F316/17-4PH 7 Trunnion support ASTM A105N/ENP ASTM A105N/ENP ASTM A182-F316 ASTM A350-LF2/ENP 8 Gland flange ASTM A105N/ENP ASTM A105N/ENP ASTM A182-F316 ASTM A350-LF2/ENP 9 Top flange ASTM A105N ASTM A105N ASTM A182-F316 ASTM 350-L7M 10 Body stud ASTM A193-B7 ASTM A193-B7 ASTM A193-B8 ASTM A320-L7M 11 Body nut ASTM A194-2H ASTM A194-2H ASTM A194-8 ASTM A194-7M 12 Screw Carbon steel Carbon steel Stainless steel ASTM A320-L7M 13 Screw Carbon steel Carbon steel Stainless steel ASTM A320-L7M 14 Body gasket Graphite Graphite Graphite Graphite 15 Gland gasket Graphite Graphite Graphite Graphite 16 Stem firesafe packing Graphite Graphite Graphite Graphite 17 Seat firesafe packing Carbon fibre +Graphite Carbon fibre +Graphite Carbon fibre +Graphite Carbon fibre +Graphite 18 Thrust washer PTFE/316SS+PTFE+MoS2 PTFE/316SS+PTFE+MoS2 PTFE/316SS+PTFE+MoS2 PTFE/316SS+PTFE+MoS2 19 Washer PTFE/316SS+PTFE+MoS2 PTFE/316SS+PTFE+MoS2 PTFE/316SS+PTFE+MoS2 PTFE/316SS+PTFE+MoS2 20 Bearing 316SS+PTFE+MoS2 316SS+PTFE+MoS2 316SS+PTFE+MoS2 316SS+PTFE+MoS2 21 O-ring Viton Viton Viton Viton 22 O-ring Viton Viton Viton Viton 23 O-ring Viton Viton Viton Viton 24 O-ring Viton Viton Viton Viton 25 Vent valve Stainless steel Stainless steel Stainless steel Stainless steel 26 Drain Stainless steel Stainless steel Stainless steel Stainless steel 27 Stem injection Stainless steel Stainless steel Stainless steel Stainless steel 28 Seat injection Stainless steel Stainless steel Stainless steel Stainless steel 29 Check valve Stainless steel Stainless steel Stainless steel Stainless steel 30 Seat spring INCONEL X-750 INCONEL X-750 INCONEL X-750 INCONEL X Anti-static spring INCONEL X-750 INCONEL X-750 INCONEL X-750 INCONEL X Seat spring INCONEL X-750 INCONEL X-750 INCONEL X-750 INCONEL X Grounding plunger Stainless steel Stainless steel Stainless steel Stainless steel 34 Alignment pin Stainless steel Stainless steel Stainless steel Stainless steel 35 Ground pin Carbon steel Carbon steel Carbon steel Carbon steel 36 Key Carbon steel Carbon steel Carbon steel Carbon steel * Recommended spare parts

5 Dimensions and Weights Class 150 (Full Bore) *305 * *406 * *406 * *406 * *406 * *600 * *600 * *600 * *600 * *700 * *700 * *760 * *760 * *760 * *760 * *760 * *760 * Dimensions and Weights Class 300 (Full Bore) *305 * *406 * *406 * *500 * *600 * *600 * *600 * *600 * *700 * *760 * *760 * *760 * *800 * *800 * *800 * *800 *

6 Trunnion Ball Valves Dimensions and Weights Class 600 (Full Bore) *406 * *406 * *600 * *600 * *600 * *600 * *700 * *760 * *800 * *800 * *800 * *800 * *800 * *800 * *800 * *900 * Dimensions and Weights Class 900 (Full Bore) *305 * *406 * *600 * *600 * *600 * **600 * *710 * *760 * *760 * *800 * *800 * *800 * *900 * *900 *

7 Dimensions and Weights Class 1500 (Full Bore) * *600 * *600 * *600 * *600 * *700 * *760 * *800 * *800 * *900 * Dimensions and Weights Class 2500 (Full Bore) *406 * *406 * *600 * * *710 * *760 *

8 National Oilwell Varco has produced this brochure for general information only, and it is not intended for design purposes. Although every effort has been made to maintain the accuracy and reliability of its contents, National Oilwell Varco in no way assumes responsibility for liability for any loss, damage or injury resulting from the use of information and data herein. All applications for the material described are at the user s risk and are the user s responsibility. Corporate Headquarters 7909 Parkwood Circle Drive Houston, Texas USA Valves 4554 Kennedy Commerce Drive Houston, Texas (713) National Oilwell Varco All Rights Reserved DPF MKT-001 Rev 01