floating ball valve
Product overview
The ball of the floating ball valve is floating. Under the action of medium pressure, the ball can produce a certain displacement and be pressed tightly against the sealing surface of the outlet end to ensure the sealing of the outlet end. It can be used in medium and low pressure situations and is widely used in petrochemical industry, coal chemical industry, and nuclear power. , aerospace, natural gas, electric power, metallurgy, food and other industries. "
Product parameters:
Nominal diameter: DN15-DN200/ 1/2"-8"
Pressure level: PN16-PN100/ CL150-600
Working temperature: -196℃-425℃ (or according to customer requirements)
Connection method: flange, thread, welding, socket welding
Sealing form: soft seal, hard seal
Usage medium: natural gas, liquefied petroleum gas, coal gas, oil, water, steam
Product standards:
design standards |
GB | API | ASME |
| GB/T22237 | API6D | ASME B16.34 | |
| Structure length | GB/T12221 | API6D | ASME B16.10 |
| connecting flange | GB/T9113 |
JB/T 79 ASME B16.5 | ASME B16.5 |
| Butt welding end | JB/T 1222 |
ASME B16.25 |
ASME B16.25 |
| Testing and Inspection | GB/T13927, JB/T 909 |
API6D |
API598 |
Key parts materials:
●Valve body: carbon steel, stainless steel, alloy steel, duplex steel, etc.
●Valve seat: soft seal PTFE, PPL, PEEK
●Metal seal spraying: STL, WC, Ni60, etc.
●Valve core: stainless steel, duplex steel, etc.
Features:
Reliable sealing:
The valve adopts a spring-loaded valve seat combination structure, which ensures sealing, flexible opening and closing without jamming even when pressure and temperature fluctuate in a wide range.
Open and closed position indication:
When the flat side of the handle or adjusting rod head is parallel to the pipeline, the valve is in the fully open position; when the flat side of the handle or valve stem head is perpendicular to the pipeline, the valve is in the fully closed position.
Locking device:
In order to prevent misoperation of the valve, padlocks can be used to lock the valve in the fully open and fully closed positions, especially for valves installed in the field or when random switching is not allowed in the process, a device designed to prevent other personnel from misoperation.
Anti-fallout design:
The lower part of the valve stem is designed to prevent the valve stem from coming out under high pressure. Prevent a large amount of medium from leaking from the damaged packing parts in the event of fire damage to the packing.
Fireproof structure:
When a fire occurs, once the valve seat is burned, the ball will directly contact the metal surface on the valve body, thereby preventing a large amount of medium from leaking from the burned valve seat.
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