Gear Operated Floating Ball Valves

Design and Inspection Standard:

Innovation

By using the modern computer technology, HFT Technical department continuous offering high performance valves for our customers. Our principle is to develop safe but cost-efficient valve. So we deploy the up to date software such as Soildworks and Ansys to strengthen our research and design ability in terms of the finite element analysis, fluid and fatigue analysis to simulation the valve application which lead to vividly shortening the product development cycle.

Design Features

Blow-out Proof Stem

The lower end of the stem is T-shaped structured, protected by boss of body, which assures stem retention at any pressure and acts as backseat. (Fig 1)

Anti-static Device

A spring-loaded plunger fitted on stem keeps constant contact between ball, stem and body to create an electric path to transfer charges, avoiding acceleration of static electricity as a result of friction during valve on-off. Such build-up is utterly hazardous to some services. (Fig2)

Fire Safe - Metal to Metal Sealing

When soft seats are decomposed or ruined by fire, the ball, driven by pressure, comes into contact with the metal lipseal seat of original soft seat, creating a metal-to-metal seal to shut off service fluids and minimize internal leakage.

Additionally, the fire safe metal seat prevents damage the medium imposed on soft seat and minimizes creep of nonmetal materials. All the floating valves are designed to be fire safe per API 607 and are tested and certified by the third party.

Low Emission Control

Modern industry sectors are challenged by valve fugitive emission to control service fluids released from the valve and curb environmental degradation. Therefore, emissioncontrol features HFT floating ball valves  Low emission packing is assembled, whose max. leaking rate of design and test stands at 100 PPM (Test is performed according to ISO15848)

Material Specifications 

Dimensions

Quality Control