Rising Stem Ball Valve

Rising Stem Ball Valve

ONERO' rising stem ball valve is designed to operate without friction between the ball and the seat during opening and to achieve zero leakage when closed. The valve is made entirely of metal and is fire-resistant, capable of functioning in extreme temperatures ranging from -196°C to 538°C. It can meet NACE standards for corrosion resistance, ensuring it can resist sulfide stress cracking in harsh environments. The valve also features a self-cleaning mechanism. When the ball is tilted away from the seat, the fluid flows 360° around the ball's sealing surface, effectively removing any debris. This prevents damage from high-speed fluid flows and keeps the sealing area clean. The rising stem ball valve is ideal for various applications where high switching frequencies and zero leakage in high temperatures are required.

Technical Specification

· Design: API6D / API 6A

· Face to Face: ASME B16.10 / API 6D

· Flanged Ends: ASME B16.5 /ASME B16.47/ASME B 16.25

· BW Ends: ASME B16.25

· Test & inspection : API 598/API6D

· Fire Safe Test: API 607/API6FA

· Special: NACE MR-01-75

Product Range

Body material: Carbon steel, Stainless steel, Alloy steel ,Monel, Duplex, Inconel,etc
Size range: 2"～36"

End Connection: RF, RTJ, BW

Pressure rating: Class150～Class2500

Working temperature:-196℃～+538℃

Mode of operation: Gear box, Electric actuator, Pneumatic actuator, hydraulic actuator, etc.

Features and Benefits

Friction-Free Operation

The ball turns only after moving away from the seat, eliminating friction and reducing wear common in traditional ball, gate, and plug valves.

Injectable Packing

Allows for online maintenance by injecting packing into the stem through a port, effectively controlling emissions. This feature is applicable to all models with a sealed cover.

Extended Service Life

This valve can replace other valves prone to sealing failures, such as standard ball valves, gate valves, and plug valves, reducing failure rates and maintenance costs significantly.

Top Entry Design

Facilitates inline inspection and maintenance after decompressing the pipeline system, simplifying upkeep.

Dual Stem Guides: The stem moves smoothly up and down, and rotates along guide pins, ensuring stable control.

Self-Cleaning Feature:

When the core is off the seat, the medium flows 360 degrees along the sealing surface, washing away impurities.

Low Torque Operation:

The elimination of sealing friction makes the valve easy to turn, allowing the use of a small handwheel without the need for a gearbox, except in very large 

sizes.

Wear-Resistant Hard Sealed Surfaces: The core's sealing surfaces are overlayed with hard alloy and polished, maintaining seal integrity even under harsh conditions.

Mechanical Wedge Seal: The inclined surface at the bottom of the stem provides a mechanical wedge force, ensuring continuous tight contact between the core and the seat.