KFTE supplies DBB trunnion ball valves which are equipped with two balls in one body. The series can be designed in three-piece, long or short pattern to satisfy the different installation requirements. DBB trunnion ball valve design reduces the weight and space compared with installing two conventional valves when it achieves safer application.These valves are usually applied in marine and offshore industry.
PRODUCT OVERVIEW
KFTE manufactures the most complete line of quality Double Block & Bleed valves, and can provide the exact Double Block & Bleed valves and actuators to meet the most demanding application requirements. Our Double Block & Bleed valves are available in an extensive range of designs, materials, sizes and pressure classes and are in full conformance with ASME, API and NACE specifications. All Double Block & Bleed valves are designed in accordance with ASME B16.34 and where applicable with API 6D or BS EN ISO 17292. The KFTE Double Block & Bleed valves provide positive shut-off of fluids and gases under extreme service conditions.
MAIN FEATURES
Fire Safety
KFTE Double Block & Bleed valves are designed in accordance with API 607, ISO 10497 and/or API 6FA.
Fugitive Emission
KFTE Double Block & Bleed valves meet the Fugitive Emission requirements of ISO 15848.
Anti-Static Device
In order to prevent static electricity which may light the fluid, static-conduction spring is set between the stem and the ball.
Anti Blow-Out Proof Stem
The stem is designed with integral T-Type shoulder to provide blow-out proof effectively. The design assures that the stem can not be blown out of the valve in the case of the packing being removed while the valve is under pressure.
Solid Ball
The solid ball used by KFTE provides straight through flow and real full-port performance characteristics. Hollow ball or cored cavity ball are not used for KFTE products.
Material Specification | ||||
NO. | DESCRIPTION | CARBON STEEL | L.T CARBON STEEL | SS304/SS316 |
1 | BODY MID SECTION | A105 | A350 LF2 | A182 F304/F316 |
2 | BODY SIDE SECTION | A105 | A350 LF2 | A182 F304/F316 |
3 | HEXAGON NUT | A194 2H | A194 7 | A194 8M |
4 | BOLT | A193 B7 | A320 L7 | A193 B8M |
5 | GASKET | SS316+GRAPHITE | SS316+GRAPHITE | SS316+GRAPHITE |
6 | SPRING | INCONEL X-750 | INCONEL X-750 | INCONEL X-750 |
7 | SEAT RING | A105+ENP | A350 LF2+ENP | A182 F304/F316 |
8 | SEAT INSERT | NYLON | NYLON | NYLON |
9 | O-RING | VITON | VITON | VITON |
10 | BALL | A105+ENP | A350 LF2+ENP | A182 F304/F316 |
11 | RADIAL BEARING | SS316+PTFE | SS316+PTFE | SS316+PTFE |
12 | SPRING | INCONEL X-750 | INCONEL X-750 | INCONEL X-750 |
13 | GASKET | SS316+PTFE | SS316+PTFE | SS316+PTFE |
14 | LOWER STEM | A182 F6A | A182 F6A | A182 F304/F316 |
15 | O-RING | VITON | VITON | VITON |
16 | GASKET | SS316+PTFE | SS316+PTFE | SS316+PTFE |
17 | SCREW | A193 B7 | A320 L7 | A193 B8M |
18 | STEM | A182 F6A | A182 F6A | A182 F304/F316 |
19 | GASKET | SS316+PTFE | SS316+PTFE | SS316+PTFE |
20 | O-RING | VITON | VITON | VITON |
21 | O-RING | VITON | VITON | VITON |
22 | GLAND | A105 | A350 LF2 | A182 F304/F316 |
23 | SCREW | A193 B7 | A320 L7 | A193 B8M |
24 | FLANGE ADAPTER | A105+ENP | A350 LF2+ENP | A182 F304/F316 |
25 | GASKET | SS316+GRAPHITE | SS316+GRAPHITE | SS316+GRAPHITE |
26 | O-RING | VITON | VITON | VITON |
27 | PACKING | GRAPHITE | GRAPHITE | GRAPHITE |
28 | PACKING GLAND | A216 WCB | A352 LCC | A351 CF8/CF8M |
29 | STOPPER PLANTE | CARBON STEEL | CARBON STEEL | STAINLESS STEEL |
30 | BACKSTOP | 65Mn | 65Mn | 65Mn |
31 | LEVER | STAINLESS STEEL+PVC | STAINLESS STEEL+PVC | STAINLESS STEEL+PVC |
32 | DRAIN PLUG | CARBON STEEL | CARBON STEEL | STAINLESS STEEL |