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Specifications:
◎ Material: Carbon Steel, Stainless Steel, Alloy Steel
◎ Nominal Size: NPS 1/4"~ 4"
◎ Pressure Rate: Class 150~2500, PN 16~420
◎ Temperature Range: -60°C to +425°C
◎ Operator: Manual
◎ Application range: Suitable for switching the flow direction of the medium in pipeline systems such as water supply, petrochemical, metallurgy, mining, textile, energy, paper, food, steel, etc. Also, for shunting or mixing fluids.
Naishi butt-welding forged steel ball valves are built tough for reliable performance in demanding conditions. They use single-inclined or V-groove resilient seats that keep a solid seal across a wide pressure range. At low pressure the smaller contact area creates high sealing force; when the pressure rises the contact area grows so the seat can take the extra load without getting damaged. PTFE and other self-lubricating materials cut friction and help the valve last longer.
Key points:
- Lip-type resilient seats give tight shut-off, low friction and lighter operating torque.
- The stem is bottom-mounted and blowout-proof, so it stays sealed even in a fire.
- Fire-safe and anti-static features make these soft-seated valves suitable for critical service.
- Flat-head stem design means the handle clearly shows whether the valve is open or closed.
- Locking holes at the full-open and full-closed positions stop accidental movement.
- Compact, light and easy to maintain, with smooth flow, low resistance and quiet operation.
These floating ball valves come in both full-bore and reduced-bore versions. They meet API 608, API 6D, BS 5351 and ASME B16.34. Body, bonnet and trim materials can be chosen to match almost any service condition.
