2014年11月18日星期二

Trunnion ball valve using the principles of

Trunnion ball valve is guaranteed by the pressure poorly. Flat stack valve to valve flatness and smoothness requirements friction plane quite high, and the requirements for the use of materials Instrument needle valve also have high demands. To solve these problems, flat lamination stack valve using a ceramic substrate under the topsheet other using a high-strength wear-resistant material, in full accordance with the principles of chemical mechanical seal manufacturing and processing, both to ensure a reasonable contact surface, and ensure the minimum coefficient of friction. Trunnion ball valve has emerged cause Valve manifolds  quality problems due to prolonged blockage of the pilot hole, the pressure relief valve stem causing the valve stem is stuck adsorption of iron particles and other issues, through the use of market information and feedback, developers have learned Trunnion ball valve actuators Division is currently unsuitable water quality of water use. Thus, the developers turned to the ball and flat stack valves. Now use the ball a little more.

2014年11月13日星期四

Trunnion ball valve of the main features of which

The main features of Trunnion ball valve is its own compact, reliable sealing, simple structure, easy maintenance, regular spherical surface and seal in the closed state, the media can not easily be eroded, easy operation and maintenance for water, solvents, acids, and natural gas general working media, but also suitable for harsh working conditions of media, such as oxygen, Instrument needle valve hydrogen peroxide, methane and ethylene, in various sectors has been widely used. Trunnion ball valve is mainly used to cut off or turn on the line of medium, can also be used to regulate and control the fluid, Instrumentation ball valve which has a very hard seal between the V-ball ball core with its V-shaped carbide hardfacing metal seat strong shear force, especially for fiber-containing, small solid granule and other media. And Trunnion ball valve on the pipeline flexibility to control not only the confluence of media, streaming, and flow switch, but also to close any channel leaving the other two channels are connected.

2014年11月5日星期三

Features Trunnion ball valve is constructed

Trunnion ball valve stem through the flat keys or splines or square convergence deed with the handle, versatile, Trunnion ball valve convenient disassembly. Stainless steel ball valve stem with anti-blown construction. High-pressure valve packing selection knitting, flexible graphite seals or tetrafluoroethylene-ene ring, so that to achieve robust stainless steel ball valve stem seals must be smooth in the case. Based on need, high-pressure valve can be planned into the anti-static structure, providing a conductive spring between the ball and the Double ferrule fitting  stem and the valve, to prevent static sparking extinguish flammable materials to ensure system safety. Trunnion ball valve seal vice situation varied. Trunnion ball valve task truth is by reversing valve love to make valve dredge or occlusion. Valve switch light, small size, can be made very large caliber, reliable sealing, simple structure, convenient maintenance, Instrument needle valve regular spherical surface and seal in the closed condition, can not easily be eroded media, in all sectors lost universal use.