A top entry ball valve is a type of valve that allows for easy maintenance and repair without removing the valve from the pipeline. This design is particularly advantageous in applications where downtime needs to be minimized and where the valve is installed in a fixed position that makes removal difficult. Top entry ball valves have a one-piece body construction, which provides a robust and leak-proof design. The valve body is usually made from materials like stainless steel, carbon steel, or other alloys, depending on the application requirements.These valves often feature advanced sealing mechanisms to ensure tight shutoff and prevent leakage. The ball and seats are designed to provide a secure seal when the valve is in the closed position.
Applicable Standards
Size Range: DN50 (2”) to DN600 (24”)
Pressure Rating: ANSI Class 150 to Class
2500Connection: Butt-weld ends to ASME B16.25; Flanged to ASME B16.5 (2” ~ 24”) and Clamp / Hub ends on request.
Body Materials: Carbon steel, ITCS, Stainless steel, Duplex, Super Duplex, Inconel 625 and other special alloys.
Top Mounting: ISO 5211 / EN15081Temp.
Range : -196°C to +200°C (-320°F to +392°F)
Design: API 6D / ASME B16.34 / ISO 14313
Face to Face: ASME B16.10* / API 6D
Fire Testing: API 607 6 Edition / ISO 10497
Pressure Testing: API 598 / API 6D / EN 12266-1/ISO 5208
Trunnion Ball
Trunnion ball valves have additional anchoring at the top and the bottom of the ball. Those two trunnions absorb the thrust generated by the line pressure, preventing excess friction between the ball and seats. Therefore, operating torques stay low even at full working pressures.
Anti-Blow-Out Stem Design
Stem design of KFTE top entry ball valves is of blow-out proof which prevents ejection of stem when the valves is under pressure. This design is in fully compliance with API 6D requirements.
Antistatic Device
All KFTE top entry ball valves are equipped with an antistatic device which creates a ground path and ensures an electrical conductivity through all metallic valve components.
Fire Safe
KFTE top entry ball valves are fire safe by standard design. Fire safe tests were carried out and certified according to API 6FA, API 607.
Mounting Flange
KFTE top entry ball valves are provided with ISO mounting flanges for actuators. Their design is in fully compliance with ISO 5211.
Material Specification | ||||
NO. | DESCRIPTION | CARBON STEEL | L.T CARBON STEEL | STAINLESS STEEL |
1 | BODY | A216 WCB | A352 LCC | A351 CF8/CF8M |
2 | SEAT RING | A182 F304+PTFE | A182 F304+PTFE | A182 F304+PTFE |
3 | BALL | A182 F304 | A182 F304 | A182 F304/F316 |
4 | SPRING | 65Mn | 65Mn | 65Mn |
5 | SHAFT | A182 F6A | A182 F6A | A182 F6A |
6 | GASKET | SS304+FLEXIBLE GRAPGITE | SS304+FLEXIBLE GRAPGITE | SS304+FLEXIBLE GRAPGITE |
7 | PACKING | FLEXIBLE GRAPGITE | FLEXIBLE GRAPGITE | FLEXIBLE GRAPGITE |
8 | BONNET | A216 WCB | A352 LCC | A351 CF8/CF8M |
9 | BOLT | A193 B7 | A320 L7 | A193 B8M |
10 | PIN | CARBON STEEL | CARBON STEEL | STAINLESS STEEL |
11 | PACKING GLAND | A216 WCB | A352 LCC | A351 CF8/CF8M |
12 | LIMIT PLATE | CARBON STEEL | CARBON STEEL | STAINLESS STEEL |
13 | NUT | A194 2H | A194 7 | A194 8M |
14 | LEVER | CARBON STEEL | CARBON STEEL | STAINLESS STEEL |
Material Specification | ||||
NO. | DESCRIPTION | CARBON STEEL | L.T CARBON STEEL | STAINLESS STEEL |
1 | PLUG | A105 | A350 LF2 | A182 F304/F316 |
2 | GASKET | SS304+GRAPHITE | SS304+GRAPHITE | SS304+GRAPHITE |
3 | BODY | A105 | A350 LF2 | A182 F304/F316 |
4 | ADJUST GASKET | STAINLESS STEEL | STAINLESS STEEL | STAINLESS STEEL |
5 | AXLE | A182 F6A | A182 F6A | A182 F304/F316 |
6 | BEARING | STAINLESS STEEL | STAINLESS STEEL | STAINLESS STEEL |
7 | BALL | A182 F304+STL | A182 F304+STL | A182 F304+STL |
8 | SEAT | A182 F304+STL | A182 F304+STL | A182 F304+STL |
9 | SEAL | FLEXIBLE GRAPHITE | FLEXIBLE GRAPHITE | FLEXIBLE GRAPHITE |
10 | SEAT RING | A182 F304 | A182 F304 | A182 F304 |
11 | SPRING | INCONEL X-750 | INCONEL X-750 | INCONEL X-750 |
12 | BONNET | A105 | A350 LF2 | A182 F304/F316 |
13 | GASKET | SS304+GRAPHITE | SS304+GRAPHITE | SS304+GRAPHITE |
14 | BOLT | A193 B7 | A320 L7 | A193 B8M |
15 | NUT | A194 2H | A194 7 | A194 8M |
16 | SHAFT | A182 F6A | A182 F6A | A182 F304/F316 |
17 | BEARING | A182 F304 | A182 F304 | A182 F304 |
18 | RING | A182 F304 | A182 F304 | A182 F304 |
19 | PACKING | FLEXIBLE GRAPHITE | FLEXIBLE GRAPHITE | FLEXIBLE GRAPHITE |
20 | PACKING GLAND | A105 | A350 LF2 | A182 F304/F316 |
21 | PACKING | FLEXIBLE GRAPHITE | FLEXIBLE GRAPHITE | FLEXIBLE GRAPHITE |
22 | BOLT | A193 B7 | A320 L7 | A193 B8M |
23 | LIMIT PLATE | SS304 | SS304 | SS304 |
24 | YOKE | CARBON STEEL | CARBON STEEL | CARBON STEEL |
25 | GEAR | - | - | - |
Material Specification | ||||
NO. | DESCRIPTION | CARBON STEEL | L.T CARBON STEEL | STAINLESS STEEL |
1 | BODY | A216 WCB | A352 LCC | A351 CF8/CF8M |
2 | BALL | A182 F304 | A182 F304 | A182 F304/F316 |
3 | BOLT | A193 B7 | A320 L7 | A193 B8M |
4 | NUT | A194 2H | A194 7 | A194 8M |
5 | PACKING | PTFE | PTFE | PTFE |
6 | PACKING GLAND | A216 WCB | A352 LCC | A351 CF8/CF8M |
7 | GEAR | - | - | - |
8 | BOLT | A193 B7 | A320 L7 | A193 B8M |
9 | NUT | A194 2H | A194 7 | A194 8M |
10 | BONNET | A216 WCB | A352 LCC | A351 CF8/CF8M |
11 | SPRING | 65Mn | 65Mn | 65Mn |
12 | SEAL | RPTFE | RPTFE | RPTFE |
13 | SHAFT | A182 F6A | A182 F6A | A182 F6A |