It is essential to select an ideal valve for your industrial application. Forged steel globe valves and forged steel gate valves are two common choices. Which of these valves is suitable for your project, and what are their main differences from the others? Here, we will break down the top elements to take into account when choosing from the extensive assortment of forged steel globe and gate valves that EWOM VALVE, a global pioneer in valve manufacture, offers.
1. Function: Isolation vs. Regulation
- Gate Valve: Primarily designed for on-off isolation of flow in pipelines. The gate rises to block the flow path completely.
- Globe Valve: Superior flow regulating skills are offered by this valve. The flow rate through the valve can be adjusted due to the internal mechanism.
2. Sealing Mechanism:
- Gate Valve: This valve uses a wedging mechanism to achieve a tight seal. For a better seal, the wedge can be forced against the seat by the flowing media’s pressure, however doing so may also wear down the sealing surfaces.
- Globe Valve: This valve forms a seal by revolving the plug and seat together. This design is ideal for throttling applications since it lowers wear on the sealing surfaces.
3. Pressure Drop:
- Gate Valve: When fully open, the gate creates minimal obstruction to flow, resulting in a low-pressure drop. It makes them ideal for applications where minimal pressure loss is critical.
- Globe Valve: Even when fully open, the internal design of a globe valve naturally leads to a more significant pressure drop than that of a gate valve.
4. Installation Direction:
- Gate Valve: Generally non-directional. You can install them in any orientation within the pipeline.
- Globe Valve: The globe valve has direction. For correct operation and sealing, they have a specified flow direction at the intake and outlet.
5. Flow Control And Direction:
- Gate Valves: Gate Valves are not designed for precise flow control. They are best suited for fully open or fully closed positions. Due to media pressure, partial holes can break down and weaken the sealing surfaces. In general, they are regarded as bidirectional. Their capacity to seal can be affected by the orientation in which they are positioned.
- Globe Valve: Excel regulates the flow rate. The internal mechanism allows accurate adjustments to the flow passing through the valve. An arrow on the valve body signifies a preferred flow direction. It makes sure proper sealing and prevents wear on the internal components.
6. Operation:
- Gate Valve: Typically operated with a rising stem and handwheel. Through the use of a screw mechanism, the handwheel can be used to visually indicate the position of the valve by raising or lowering the gate.
- Globe Valve: It may have a rising or non rising stem layout. Rising stem valves offer visual confirmation of the valve position, while non-rising stem valves are often more compact.
7. Maintenance:
- Gate Valve: Relatively low maintenance. The simple design with minimal moving parts makes them easy to maintain.
- Globe Valve: This may require more frequent maintenance due to the complex internal mechanism involved in flow regulation.
8. Application Suitability:
- Gate Valve: Gate valves are appropriate for applications that need total flow shutdown, like disconnecting pipeline segments for maintenance or isolating equipment. They are widely utilized in the oil and gas, mining, and electricity generation industries.
- Globe Valve: Ideal for applications where flow rate control is critical. They are extensively utilized in water treatment, chemical processing, and HVAC systems.
9 Cost:
- Gate Valve: Generally less expensive than globe valves due to their more straightforward design.
- Globe Valve: This may have a higher initial cost due to the more complex internal mechanism.
10. Body Style:
- Gate valves: They usually have a straight body design to minimize obstruction to flow.
- Globe valves have an S-shaped flow route with a rounded body shape.
Choosing the Right Valve for You
You can select the right forged steel globe valves and forged steel gate valve for your specific application by being aware of the main distinctions between the two. To ensure you’ll discover the ideal solution for your industrial application, we provide a wide range of valve types, the Forged Steel Globe Valve and Gate Valve.
EWOM VALVE provides:
- Global reach: They provide prompt and effective service from their facilities in China, the USA, Italy and Germany.
- Quality control: A devoted internal QC team ensures each valve satisfies the highest requirements.
- Customization: They can modify valves to meet the demands of your particular project.
Forged Steel Globe Valves and Forged Steel Gate Valves are available from EWOM VALVE.