Global

Start Your Solution

Why choose Lipin

Why choose Lipin?

If you choose Lipin, we offer a one-stop valve solution service with a sales representative for each project to tailor a personalized solution according to customer needs.

In Order for The Valve to Perform Optimally

We need to consider various factors such as environment and temperature to select a suitable valve.
  • 01
    Determine the nature of the fluid
    First of all, understanding the nature of the fluid being treated is the key to choosing a suitable valve. For example, factors such as fluid temperature, pressure, viscosity and corrosion are considered to have an impact on valve selection. For fluids under high temperature or high pressure conditions, valves made of high temperature or high pressure resistant materials need to be selected. In the face of corrosive fluids, the valve made of corrosion-resistant materials should be preferred.
  • 02
    Determine fluid flow and pressure
    It is important to accurately determine the flow and pressure range of the liquid to be handled, which will directly determine whether the selected valve type is suitable. Among them, "flow rate" refers to the rate of liquid passing through the valve per unit time; The "pressure" determines the amount of load that the valve is subjected to during operation. These parameters will help you confirm the size and material required to ensure that the selected valve will meet the expected operating conditions and withstand the appropriate pressure.
  • 03
    Understand the different types of valves
    familiar with a variety of different types of valves is essential to make the right choice. Common types include cutoff type, ball type, butterfly type and adjustable type, and there are differences between different working principles and applicable scene characteristics. For example, the spherical design is more suitable for fast switching and cutting off the transmission of liquid substances; The regulated type can be used to control the transfer rate and pressure of liquid substances.
  • 04
    Consider the operating requirements
    The operating requirements are also one of the important factors in the correct selection of the appropriate threshold. For example, manual or automated operation modes need to take into account the relevant control mechanism issues, and the use of electric or pneumatic actuators can achieve automated operation objectives; In addition, it is necessary to take into account many factors such as opening and closing speed, sealing effect and reliability to meet specific application requirements.
  • 05
    Adjust the installation environment
    Finally, consider the factors related to the installation environment to adjust and select the best solution, and pay attention to space restrictions, temperature, pressure, vibration and media characteristics. Ensure that the selected devices meet the installation environment conditions and have proper matching capabilities. For example, in the case of limited space, compact design can be adopted; For extreme temperature environments, it is necessary to select equipment that can withstand extreme temperature changes; In addition, in the presence of vibrating or corrosive media, seismic anti-erosion equipment is required to provide stabilization services.
When choosing a valve type, you need to consider the above factors, because after the valve is installed on the actual pipeline, it will be affected by these factors. What we can do is to create a valve that can still perform at its best under the influence of these factors.

There Are Two Characteristics of Valves

Usage characteristics
It determines the main performance and scope of use of the valve.
The valve usage characteristics include:
  • Types of valves
    closed-circuit valves, regulating valves, safety valves, etc.
  • Product types
    gate valves, globe valves, butterfly valves, ball valves, etc.
  • Main parts of the valve:
    valve body, valve cover, valve stem, valve disc, sealing surface materials
  • Valve driving mode
    manual, electric, pneumatic, hydraulic
Structural characteristics
It determines some structural characteristics of the valve installation, repair, maintenance and other methods.
Structural features include:
  • Valve structure
    valve body length and overall height
  • Pipe connection forms
    flange connection, threaded connection, clamp connection, external thread connection, welded end connection, etc.
  • Form of sealing surface
    insert ring, threaded ring, overlay welding, spray welding, valve body itself
  • Valve stem structure
    rotating stem, lifting stem, etc.

Steps to Select a Valve

  • STEP 01
    Purpose and conditions
    Determine the role of the valve in the equipment or device. Determine its working conditions, such as the media it controls, operating pressure and temperature.
  • STEP 02
    Select the valve type
    Select the valve type—stop valve, regulating valve, safety valve, etc.
  • STEP 03
    Valve parameters
    For automatic valves, first define the acceptable flow resistance, discharge capacity and back pressure according to the requirements. Then, determine the nominal diameter of the pipe and the diameter of the valve seat hole.
  • STEP 04
    Connection size and method
    Determine the nominal diameter of the pipe connected to the valve and its connection type - flange, threaded or welded.
  • STEP 05
    Geometric parameters
    Determine the geometric details of the valve - structural length, flange connection form and size, height after opening and closing, size and number of connecting bolt holes, and overall dimensions of the valve.
  • STEP 06
    Material
    Select the appropriate valve body and internal component materials according to the transmission medium, pressure, and temperature. Options include cast steel, carbon steel, stainless steel, alloy steel, acid-resistant stainless steel and copper alloys.
  • STEP 07
    Operation mode
    Determine the operation mode of the valve - manual, electric, electromagnetic, pneumatic, hydraulic or using electro-hydraulic linkage device.
  • STEP 08
    Valve design
    Determine the specific design and issue valve design drawings