Forged Steel Globe Valve

brief introduction

Due to the relatively short opening or closing stroke of the valve stem, and the very reliable cut-off function, as well as the positive proportion between the change of the valve seat port and the stroke of the valve disc, it is very suitable for the flow regulation. Therefore, this type of valve is very suitable for cut-off or regulation and throttling [1].

A kind of

Effect

Forged steel stop valve is used to close or open the pipeline in the pipeline system to maintain the normal operation of the system.

Selection principle

The selection principle is:

1. Stop valve should be selected on the pipeline or device of high temperature and high pressure medium. For example, high temperature and high pressure pipelines of thermal power plants, nuclear power plants and petrochemical systems.

2. The flow resistance on the pipeline is not strict. That is to say, there is little consideration for pressure loss.

3. Small valves can be needle valve, instrument valve, sampling valve, pressure gauge valve, etc.

4. There is flow regulation or pressure regulation, but the regulation accuracy is not high, and the pipeline diameter is relatively small. For example, the pipeline with nominal diameter≤50mm should be selected.

5. High pressure angle stop valve or high pressure angle throttle valve with nominal pressure of pn160, nominal pressure of 16MPa or pn320, nominal pressure of 32Mpa should be selected for small and large chemical fertilizers in synthetic industrial production.

6. In the desilication workshop and coking pipeline of alumina Bayer process, it is easy to select DC stop valve or DC throttle valve with separated valve body, removable valve seat and cemented carbide sealing pair.

7. For water supply and heat supply projects in urban construction, stop, balance valve or plunger valve can be selected if the nominal diameter is smaller than 150 mm