Resilient Seated Non-Rising Stem Gate Valve
Product Description
A resilient-seated non-rising stem gate valve is a type of valve commonly used in water and wastewater applications. It is designed to provide a reliable shut-off mechanism and control the flow of fluids in a pipeline. Here's a description of its key features:
Construction: The valve body and bonnet of a resilient-seated non-rising stem gate valve are typically made of cast iron, ductile iron, or other materials with excellent corrosion resistance and durability. The valve seat is lined with a resilient material such as EPDM or NBR (nitrile butadiene rubber) to ensure a tight seal.
- Gate mechanism: The valve features a flat gate or disc that moves perpendicular to the flow of the fluid. When the valve is open, the gate is lifted to allow the fluid to pass through, and when closed, the gate is lowered to obstruct the flow.
- Resilient seat: The gate valve is equipped with a resilient seat made of rubber or elastomeric material. The resilient seat provides a tight seal against the gate, preventing leakage even under low-pressure conditions. It also helps to compensate for any misalignment or wear of the gate, ensuring a reliable shut-off.
- Non-rising stem: The stem of the valve does not move up or down as the valve is operated. This design feature makes the valve suitable for applications where space is limited or where the valve is installed in a buried position.
- Handwheel operation: The resilient-seated non-rising stem gate valve is manually operated using a handwheel located at the top of the valve. Turning the handwheel clockwise or counterclockwise raises or lowers the gate, respectively, controlling the flow of fluid.
- Bi-directional flow: The valve is designed for bi-directional flow, allowing the fluid to travel in either direction through the pipeline. This feature provides flexibility in pipeline configurations and simplifies installation.
- Corrosion resistance: The valve components, including the gate, stem, and body, are constructed with materials that offer excellent corrosion resistance. This ensures long-term durability and reliable performance in water and wastewater applications.
- Application versatility: Resilient-seated non-rising stem gate valves are commonly used in water supply systems, wastewater treatment plants, irrigation systems, and other applications where reliable shut-off and control of fluids are required. They are suitable for both above-ground and buried installations.
Application: Gate valves are commonly used in various industries and applications, including:
1. Water and wastewater treatment plants: Gate valves are used to control the flow of water and other fluids in pipelines, tanks, and treatment processes.
2. oil and gas industry: Gate valves are used in oil and gas pipelines, refineries, and drilling operations to control the flow of crude oil, Natural gas, and other fluids.
3. Power plants: Gate valves are used in power generation plants to control the flow of steam, water, and other fluids in boilers, turbines, and cooling systems.
4. Chemical and petrochemical industry: Gate valves are used in chemical processing plants, petrochemical refineries, and pharmaceutical manufacturing facilities to control the flow of various chemicals and fluids.
5. Mining industry: Gate valves are used in mining operations to control the flow of water, slurry, and other fluids in processing plants, pipelines, and tailings management.
Resilient Seated Non-Rising Stem Gate Valve Maintainance
- Regular inspection: Perform routine visual inspections of the valve to check for any signs of leakage, corrosion, or damage. Inspect the valve body, gate, stem, and resilient seat for any wear or deterioration. Ensure that the valve is operating smoothly without any obstructions or blockages.
- Lubrication: Although resilient-seated gate valves have a non-rising stem design that reduces the need for frequent lubrication, it is still important to periodically lubricate the stem and gate mechanism. Follow the manufacturer's recommendations regarding the type and frequency of lubrication. Ensure that the lubricant used is compatible with the valve components and does not damage the resilient seat.
- Seat inspection and replacement: Over time, the resilient seat may wear out or become damaged. Inspect the seat periodically for any signs of wear, deformation, or tearing. If the seat is damaged or not providing a proper seal, it should be replaced. Follow the manufacturer's guidelines for seat replacement, ensuring that the new seat is of the correct material and size.
- Flushing and cleaning: In applications where the fluid being handled may contain debris, solids, or contaminants, it is important to flush and clean the valve periodically. This helps prevent any buildup or blockage that may affect the valve's operation. Follow proper flushing procedures and use appropriate cleaning agents or methods recommended by the manufacturer.
- Actuator maintenance: If the resilient-seated non-rising stem gate valve is equipped with an actuator for automated operation, ensure that the actuator is also properly maintained. Follow the manufacturer's guidelines for actuator maintenance, including lubrication, inspection, and testing.
- Record keeping: Maintain a record of maintenance activities, including inspection dates, lubrication schedules, seat replacements, and any other relevant information. This record can help track the valve's performance, identify any recurring issues, and ensure timely maintenance.
- Follow manufacturer's guidelines: Always refer to the manufacturer's maintenance guidelines and recommendations specific to the resilient-seated non-rising stem gate valve model being used. Different valves may have varying maintenance requirements, and following the manufacturer's instructions ensures that the valve is properly maintained.
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