What is a PPR globe valve?
PPR is a random copolymer of propylene and ethylene, and PPR pipes are formed by extruding PPR resin through an extruder.
Globe valve: refers to the valve whose closing member moves along the centerline of the valve seat. The PPR valve is a very inconspicuous small part of daily life, but it plays a very good role in regulating, controlling, and closing the water pipe fluid. Because of the difference in PPR pipe materials, the types of valves are also relatively diverse, so the relative functions are also different.
Today, IFAN will explain to you the characteristics of globe valves. This is our Facebook Website:www.facebook.com
Advantage
Due to the small friction between the sealing surfaces during the opening and closing process, it is relatively durable, the opening height is not large, it is easy to manufacture, and it is convenient to maintain. It is not only suitable for medium and low pressure but also suitable for high pressure.
Work process
A globe valve is a valve in which the closing member (disc) moves along the centerline of the seat. According to the movement form of the disc, the change of the port of the valve seat is proportional to the stroke of the disc. Because the opening or closing stroke of the valve stem of this type of valve is relatively short, and it has a very reliable cut-off function, and because the change of the valve seat opening is proportional to the stroke of the valve disc, it is very suitable for flow adjustment. Therefore, this type of valve is very suitable for cut-off or regulation and throttling.
Scope of Application
1. It is advisable to choose a stop valve on the pipeline or device of high temperature and high-pressure medium. Such as thermal power plants, nuclear power plants, high temperature, and high-pressure pipelines of petrochemical systems.
2. On pipelines that do not require strict flow resistance.Such as places where little consideration is given to pressure loss
3. Needle valves, instrument valves, sampling valves, pressure gauge valves, etc. can be used for small valves.
4. There is flow adjustment or pressure adjustment, but the adjustment accuracy is not high, and the diameter of the pipeline is relatively small, such as the pipeline with a nominal diameter ≤ 50mm, it should be selected.
5. Small and large chemical fertilizers in synthetic industrial production should use high-pressure angle PPR globe valves or high-pressure angle throttle valves with a nominal pressure of PN160 and a nominal pressure of 16mpa or a pn320 with a nominal pressure of 32mpa.
6. In the desalinization workshop and pipelines that are easy to coke in the production of alumina Bayer, it is easy to choose direct-flow PPR globe valves or direct-flow throttle valves with separate valve bodies, removable valve seats, and hard alloy sealing pairs.
7. For water supply and heating projects in urban construction, cut-off and balance valves can be used for smaller nominal pipelines
