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 press 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, coal chemical, nuclear power, aerospace, natural gas, electric power, metallurgy, food and other industries. "
Product parameters:
Nominal diameter: DN15-DN200/ 1/2"-8"
Pressure rating: PN16-PN100 / CL150-600
Operating temperature: -196℃ to 425℃ (or as per customer requirements)
Connection methods: flange type, threaded type, welded type, socket weld type
Sealing methods: soft seal, hard seal
Medium used: 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 79ASME 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 component materials:
●Valve body: carbon steel, stainless steel, alloy steel, duplex steel, etc.
●Valve seat: Soft seal PTFE, PPL, PEEK
● Metal sealing coating: STL, WC, Ni60, etc.
●Valve core: Stainless steel, duplex steel, etc.
Features:
Reliable sealing:
The valve adopts a spring-loaded valve seat assembly structure, which can ensure flexible sealing and opening/closing without jamming even when there are large fluctuations in pressure and temperature.
Open/closed position indicators:
When the flat side of the handle or valve stem 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:
To prevent accidental valve operation, the valve can be locked in the fully open and fully closed positions with a padlock. This is especially important for valves installed in the field or when the process flow does not allow for arbitrary opening and closing, and is designed to prevent accidental operation by other personnel.
Anti-slip 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:
In the event of a fire, once the valve seat is burned, the ball will come into direct contact with the metal surface of the valve body, thereby preventing a large amount of media from leaking from the burned valve seat.
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