Globe valve advantages and the use of
Globe valve performance, and serve to cut off the pipeline medium.
China globe valve manufacture-Datian Valve, the specialist of China valve manufacture, main product range: control valve, ball valve, automatic recirculation valve, gate valve, globe valve, check valve, choke valve, safety valve, plug valve, diaphragm valve,
strainer,
pressure reducing valve and valve products(air source heat pump).
Globe valve advantages:
(1) A simple structure, manufacturing and maintenance more convenient.
(2) the working stroke is small, open and close a short time.
(3)Good sealing, small friction force between the sealing surface, longer life expectancy.
Globe valve shortcomings:
(1) A fluid resistance, the larger force required to open and close.
(2) does not apply to particles with a high viscosity, easy to coking media.
(3) Adjust the performance is poor.
Globe valve type of valve stem threads to the location of points and external thread and internal thread type. The flow of the medium, straight-through, DC type and angle type. Globe valve seal the form of points, packing seal globe valves and bellows sealed stop valve.
Globe valve use:
Applicable to the HTF, toxic, flammable, strong permeability, pollute the environment with radioactive fluid medium pipe on the road shut-off valve can also be used to adjust is to create quality products without leakage factory. The valve castings used in all the precision casting.
Globe valve is shut down parts (disc) moving the valve along the valve seat centerline. According to this mobile form of the valve, the seat through the mouth of the change is directly proportional relationship with the valve stroke. The type of the valve stem to open or close the trip is relatively short, but very reliable cut, due to changes in the valve seat openings and the valve stroke is proportional to the very suitable for flow regulation. Therefore, this type of valve is suitable as a cut or adjust the throttle use.
Installation and maintenance of the globe valve should note the following:
(1)A hand wheel, lever operated stop valve can be installed in any position on the pipeline.
(2)Handwheel, handle and Wei mechanism, does not allow for lifting with.
(3)The flow of media should be consistent with the body shown in the arrow dir0ection.
Bellows sealed globe valve, its key components – metal bellows, the lower stem assembly with automatic roller welding, the upper connecting plate automatically roll welding, to form a metal barrier between the fluid medium and the atmosphere, ensure that the valve pole zero leakage. The valve flap and valve sealing surface precision ground and assembled 100% pressure test, all to achieve zero leakage. As the secondary seal above the bellows still retains the stuffing, but also increase the reliability and security. The high-pressure valve metal bellows are multi-layer structure, hydroforming, to ensure that the on / off life at 10,000 times the maximum pressure of the whole trip.
Compared with the gate valve, regulating the performance is better, open a high degree of small, short closing time, manufacturing and maintenance facilities, the sealing surface is not easy to wear, abrasion, good sealing performance, long service life; closing the valve body structure design twists and turnsflow resistance, energy consumption; for steam, oil and other media, should not be used for high viscosity with particles, easy to knot the focus, easy precipitation of the medium. In the high pressure stop valve can be balanced structure of the large diameter cut-off valve, globe valve extension products – throttle by changing the flow cross section to control the pressure and flow of the medium, with the exception of the opening and closing parts of the conical flow line, other large part of the same cut-off valve.

5) This deal timeliness, January 24, 2012 is gone, when the concern @ Hebe-USA
2011 08 16