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SHANGHAI HUIXUAN VALVE

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What is a top entry ball valve

2021-12-12

Top Entry Ball Valve with a one-piece body design that allows in-line maintenance.Top entry trunnion mounted ball valve is manufactured to ensure bi-directional sealing with two independent floating seats.

Top entry trunnion mounted ball valve feature a double block and bleed, fire safe design and an anti blow-out stem. Top entry trunnion mounted ball valve with seat retraction technique gives the convenience of in-line repair or replace valve internal components without dismantling it from pipe line.

 top entry ball valve

The top entry ball valve is available in size 2" ~24" , ANSI class rating 150 to 1500 and temperature ratings of -46 ℃ to 200℃ . All meet the fire safe requirement of BS 6755 and API 6FA.

Top entry ball valves are typically used in process systems where in-line maintenance is preferred over full valve removal. As such, it is common for top entry ball valves to be used in high-pressure applications that require infrequent maintenance, like high integrity pressure protection system (HIPPS) valves.


Top entry ball valve Advantage & Benefit:

• Self-Adjusting Seats: Compensate for Wear & Temperature Fluctuations
• Spring Loaded Low Pressure Seals
• Pressure Activated Seating
• Built-In Antistatic Feature
• Simplified In-line maintenance/reparability

 

Top entry ball valve Bill of Material

No. PART NAME Carbon Steel Low Temp. CS Stainless Steel
10 BODY A216-WCB A352 LCB A351 CF8M
13 BONNET A216-WCB A352 LCB A351 CF8M
15 BONNET O-RING FKM FKM-GLT FKM
16 BONNET BOLT A193 B7 A320 L7 A193 B8M
16A BONNET NUT A194 2H A194 4 A194 8M
17 BONNET GASKET INHIBITED FLEXIBLE GRAPHITE
30 BALL A182 F316
40 SEAT RTFE OR NYLON OR PEEK
41 SEAT HOLDER 316 STAINLESS STEEL
41A SEAT BACK-UP RING 316 STAINLESS STEEL
42 SEAT SPRING INCONEL X750
43 O-RING FKM FKM-GLT FKM
43A O-RING FKM FKM-GLT FKM
45 SPRING HOLIDER 316 STAINLESS STEEL
48A FIRE SAFE SEAL INHIBITED FLEXIBLE GRAPHITE
48B FIRE SAFE SEAL INHIBITED FLEXIBLE GRAPHITE
50 STEM 316 STAINLESS STEEL
51 STEM THRUS BEARING 316 STAINLESS STEEL+PTFE
52 STEM BEARING 316 STAINLESS STEEL+PTFE
53 STEM BUSH 316 STAINLESS STEEL+ENP
54 BUSH INNER O-RING FKM FKM-GLT FKM
55 BUSH INNER O-RING FKM FKM-GLT FKM
62 THRUST BEARING 316 STAINLESS STEEL+PTFE
63 BEARING 316 STAINLESS STEEL+PTFE
70A STEM FIRE SAFE SEAL INHIBITED FLEXIBLE GRAPHITE
72 STEM COVER A105N A350 LF2 A182 F316
73 STEM COVER BOLT A193 B7 A320 L7 A193 B8M
74 STEM COVER NUT A194 2H A194 4 A194 8M
80 T-BAR TUBE A53 GALVANIZED
81 KEY ANNSI 1025
82 STOP PLATE 316 STAINLESS STEEL
83 T-BAR SOCKET A395+BLACK PAINT
84 T-BAR BOLT A193 B8M
85 STOP BOLT A193 B8M
87 WORM GEAR OPERATOR COMMERCIAL
88 GEAR MOUNTING BOLT A193 B7 A320 L7 A193 B8M
89 GEAR MOUNTING NUT A194 2H A194 4 A194 8M
90 NAME PLATE 316 STAINLESS STEEL
92 ANTI-STATIC DEVICE 316 STAINLESS STEEL
92A ANTI-STATIC PLUNGER 316 STAINLESS STEEL
93 DRAIN PLUG 316 STAINLESS STEEL
94 VENT VALVE 316 STAINLESS STEEL
95 INJECTOR 316 STAINLESS STEEL
96 INJECTOR 316 STAINLESS STEEL
100 WIPER SEAL NBR

 

 

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