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|Body Material:||CF8, CF8M, CF3, CF3M, CN7M, LC1, LC2, LC3, LCB, LCC, Monel, 20# Alloys, 4A, 5A, F304, F304L, F316, F316L, LF1, LF2, LF3, LF9, F51, F53, etc.|
|Seal Material:||STELLITE, 13Cr, SS304, SS316, etc.|
|Connection Type:||Flanged, Butt Welded, Socket Welded, NPT|
|Operation:||Handwheel, gear operated, pneumatic, motorized|
|Face to Face Dimension:||ASME B16.10|
|Flange End Dimension:||ASME B16.5|
|Butt Welded Dimension:||ASME B16.25|
|Design and Manufacture:||BS1873,API623,BS 6364-1984,SHELL MESC SPE 77/200,MSS SP - 134 - 2018|
|Test Standard:||API 598,API 6FA, ISO 15848-1-2|
Sub-zero treatment and cryogenic test
Low temperature bonnet extension and special stem extension are available.
Applicable to working temperature as low as -196℃
Sealing surface is not easy to be abraded; good sealing performance, long service life
Operation: handwheel, gear, electric actuator, pneumatic actuator, hydraulic actuator
Not suitable for media with particles, high viscosity, and easy coking
Applied to water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea, and other media
Opening a stuck globe valve can be challenging, but with proper care and techniques, you can often free the valve without causing damage. Here's a step-by-step guide to help you open a stuck globe valve:
1. Safety First:
Ensure you are following proper safety procedures and wearing any necessary personal protective equipment (PPE), especially if dealing with hazardous materials or high pressures.
2. Identify the Issue:
Before attempting to open the valve, try to determine why it's stuck. Is it due to corrosion, sediment buildup, or another issue? Understanding the cause can help you decide on the best approach.
3. Apply Penetrating Oil:
If corrosion is the likely cause of the valve being stuck, apply a penetrating oil (such as WD-40 or a specialized penetrating fluid) to the junction of the valve stem and the valve body. Allow the oil to sit for a while to help loosen the rust.
4. Tap the Valve Gently:
Using a soft mallet or a piece of wood, gently tap the valve body near the stem. This can help to break loose any rust or debris that might be causing the valve to stick.
5. Use a Wrench or Pliers:
If tapping doesn't work, you can try using an adjustable wrench or pliers to grip the valve stem and gently turn it counterclockwise (to open the valve). Apply gradual pressure and avoid excessive force to prevent damaging the stem.
6. Apply Heat:
In some cases, applying localized heat to the valve body (not the stem) can help expand the metal and loosen any corrosion. Use a heat gun or a propane torch, but be cautious not to overheat the valve, as this can damage seals or other components.
7. Apply Lubricant:
Once you've managed to get the valve moving, apply a lubricant suitable for the valve and the fluid it's handling. This can help prevent future sticking.
8. Avoid Excessive Force:
Avoid using excessive force or tools that could damage the valve or its components. Forcing a stuck valve open too aggressively can cause further issues.
9. Seek Professional Help:
If your attempts to open the valve are unsuccessful, or if you are dealing with a complex industrial valve, it's best to seek help from a professional technician or valve specialist. They will have the expertise and tools to handle the situation safely and effectively.
Remember that patience and care are key when dealing with a stuck valve. Rushing or using excessive force can lead to more serious problems. If you are unsure or uncomfortable with the process, it's always better to consult a professional who can assist you in resolving the issue safely.
The advantages of a globe valve lie in its ability to provide precise flow control and throttling. With a movable disk or plug element, globe valves offer accurate modulation of fluid flow, allowing for fine adjustments in the degree of opening. This makes them well-suited for applications requiring precise flow rates, such as in industries like oil and gas, power generation, and chemical processing.
Globe valves also exhibit a linear flow characteristic, ensuring a proportional response to changes in valve position. This characteristic simplifies control and minimizes surprises in flow adjustments. Additionally, globe valves can handle a range of flow rates and pressures, making them versatile for various operational conditions.
Moreover, globe valves provide effective shut-off capabilities, halting fluid flow entirely when necessary. Their moderate pressure drop is beneficial in maintaining system efficiency. These attributes collectively make globe valves indispensable in scenarios demanding controlled flow, accurate regulation, and reliable isolation.
Globe valves are chosen for their precise flow control and versatility in various industries. Their design, featuring a movable disk or plug element, enables accurate modulation of fluid flow. This makes them essential for applications demanding precise control over flow rates and pressures.
Industries like oil and gas, power generation, and chemical processing require controlled flow for optimal operation. Globe valves' linear flow characteristic ensures predictable responses to changes in valve position, facilitating stable system performance. The ability to throttle flow within a specific range is crucial for processes needing gradual adjustments.
Globe valves excel at shut-off applications, effectively isolating fluid flow when necessary. This reliability is critical for maintenance and emergencies. Their adaptability to a wide range of pressures and flow rates enhances their usability.
Furthermore, moderate pressure drop across globe valves supports efficient pressure regulation. Their durability and ease of maintenance contribute to long-term reliability, minimizing downtime.
Globe valves accommodate various materials, sizes, and configurations to suit diverse needs. Their suitability for thicker fluids and suspended solids makes them versatile solutions for industries handling challenging fluids.
In summary, globe valves are selected for their precision, versatility, and reliability in controlling flow rates and pressures across industries, ensuring efficient processes and system stability.
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