Ball Valve for cryogenic service - Top Entry Cryogenic Floating | Neway

Neway Top Entry Cryogenic Floating Ball Valve

Top-entry floating ball valve for isolation of cryogenic liquids and gases. Available in NPS 1/2"–3", ASME Class 150–1500 / PN16–PN250, stainless steel body, RF or BW ends, with manual, pneumatic, electric, or hydraulic actuation.

Technical Configuration

• Neway Series: BDG, top entry, cryogenic floating ball design
• Seat materials: PCTFE, RPTFE, PEEK, VESPEL, or PAI, selected per media, temperature, and pressure class
• Body materials: CF8, CF8M, CF3, CF3M, F304, F316, F304L, F316L, LC3, LF3
• Stem sealing: graphite low-emission packing
• Design features: extension bonnet, anti-static, fire-safe, drop plate, stem guide for alignment

Operational Use

Top-entry construction allows internal access from above, minimizing downtime and re-isolation work in cryogenic lines. Floating ball design is primarily used for smaller diameters where operating torque and seat loads remain within acceptable limits.

Cryogenic Applications

Applied in LNG, air separation, liquid nitrogen, liquid oxygen, cryogenic gases, and emergency shut-off lines. Product documentation references LNG service and compliance with BS6364, SHELL 77/200, and GB/T24925 standards.

FAQ

When is BW preferred over RF?
For permanent cryogenic lines, BW is selected to minimize flanged leakage points.

What data is required for specification?
Process media, minimum temperature, design pressure, ASME class, NPS/DN, RF or BW, seat material, actuator type, and fail-close or fail-open requirement.