Features of Rising Stem Ball Valve

  1. Rising Stem Mechanism:

    • The stem rises and rotates simultaneously, lifting the ball away from the seats during operation.

    • This minimizes friction and wear on the ball and seats.

  2. Non-Friction Operation:

    • Unlike traditional ball valves, the sealing surfaces do not rub against each other during opening or closing, reducing torque and extending valve life.

  3. Quarter-Turn Valve:

    • Provides quick shut-off with a 90° turn of the handle or actuator.

  4. Metal or Soft Seated:

    • Available in both metal-to-metal and soft-seat configurations, suitable for various pressure and temperature ranges.

  5. Blow-Out Proof Stem:

    • Ensures safety in high-pressure conditions by preventing the stem from being ejected.

  6. Anti-Static Design:

    • Prevents static charge buildup in flammable applications.

  7. Fire-Safe Construction (Optional):

    • Maintains sealing integrity in fire conditions.

  8. Bi-directional Sealing:

    • Can block flow in either direction.

Applications of Rising Stem Ball Valve

  1. High-Pressure & High-Temperature Services:

    • Ideal for conditions where conventional ball valves would suffer excessive wear.

  2. Refineries & Petrochemical Plants:

    • Used in hydrocarbon processing due to tight shutoff and low leakage.

  3. Power Generation:

    • Especially in steam and boiler systems requiring reliable isolation.

  4. Offshore and Onshore Oil & Gas:

    • Used in upstream and midstream operations for safe flow control.

  5. Cryogenic Services (with appropriate design):

    • Suitable for LNG and other cryogenic applications when designed for low temperatures.

  6. Chemical Processing:

    • Handles corrosive or aggressive media with compatible materials.

  7. Pipeline Systems:

    • Useful in mainline isolation due to high durability and sealing performance.

Description

Rising Stem Ball Valve 

• No Rubbing Between Sealing Surfaces The tilt-and-turn action eliminates seal abrasion,

which is the major cause of seat wear in conventional ball, gate and plug valves

• Top-entry Design
In-line inspection and repair, after system depressurizing, simplifies maintenance

Specifications and Compliances

• API 6D
• ISO 9001:2008
• PED 97/23/EC
• ATEX Directive 94/9/EC
• GOST
• GOST-R Certificate and RTN Permit
• ISO 15848-1 (Fugitive Emission Type Testing)
• Shell GSI SPE 77/300 TAT Qualified and
TAMAP Two-Star Rating
• ASME B16.34

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