KFTE VALVE CO., LTD.
KFTE VALVE CO., LTD.

Trunnion DBB Ball Valve

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.

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Features
Structural Drawing

Features for Trunnion DBB Ball Valve

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.

Structural Drawing for Trunnion DBB Ball Valve

Trunnion DBB Ball Valve


Material Specification
NO.DESCRIPTIONCARBON STEELL.T CARBON STEELSS304/SS316
1BODY MID SECTIONA105A350 LF2A182 F304/F316
2BODY SIDE SECTIONA105A350 LF2A182 F304/F316
3HEXAGON NUTA194 2HA194 7A194 8M
4BOLTA193 B7A320 L7A193 B8M
5GASKETSS316+GRAPHITESS316+GRAPHITESS316+GRAPHITE
6SPRINGINCONEL X-750INCONEL X-750INCONEL X-750
7SEAT RINGA105+ENPA350 LF2+ENPA182 F304/F316
8SEAT INSERTNYLONNYLONNYLON
9O-RINGVITONVITONVITON
10BALLA105+ENPA350 LF2+ENPA182 F304/F316
11RADIAL BEARINGSS316+PTFESS316+PTFESS316+PTFE
12SPRINGINCONEL X-750INCONEL X-750INCONEL X-750
13GASKETSS316+PTFESS316+PTFESS316+PTFE
14LOWER STEMA182 F6AA182 F6AA182 F304/F316
15O-RINGVITONVITONVITON
16GASKETSS316+PTFESS316+PTFESS316+PTFE
17SCREWA193 B7A320 L7A193 B8M
18STEMA182 F6AA182 F6AA182 F304/F316
19GASKETSS316+PTFESS316+PTFESS316+PTFE
20O-RINGVITONVITONVITON
21O-RINGVITONVITONVITON
22GLANDA105A350 LF2A182 F304/F316
23SCREWA193 B7A320 L7A193 B8M
24FLANGE ADAPTERA105+ENPA350 LF2+ENPA182 F304/F316
25GASKETSS316+GRAPHITESS316+GRAPHITESS316+GRAPHITE
26O-RINGVITONVITONVITON
27PACKINGGRAPHITEGRAPHITEGRAPHITE
28PACKING GLANDA216 WCBA352 LCCA351 CF8/CF8M
29STOPPER PLANTECARBON STEELCARBON STEELSTAINLESS STEEL
30BACKSTOP65Mn65Mn65Mn
31LEVERSTAINLESS STEEL+PVCSTAINLESS STEEL+PVCSTAINLESS STEEL+PVC
32DRAIN PLUGCARBON STEELCARBON STEELSTAINLESS STEEL


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