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Ball Valve

Fully Welded

A fully welded ball valve is a robust and reliable type of valve designed for applications requiring high pressure, leak-proof performance, and minimal maintenance.
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Fully Welded Extended Stem Ball Valves

Specifications

Ball Valve - Fully Welded
Size Range

2 – 24 NPS, DN50 - DN600

Body Materials

ASTM A216, A105, A350, A182, A351, A352, A890, A995.

Temperature Range

-29°C to 450°C

Ball Materials

ASTM A216, A105, A350, A182, A351, A352, A890, A995.

Maximum Allowable Operating Pressure

ANSI 150#, ANSI 300#, ANSI 600# , ANSI 900#, ANSI 1500#, ANSI 2500#

Seat Materials

PTFE, NYLON, PEEK, NBR, KELF, ENP (Electroless nickel plating), HC (Hard chrome).

Shutoff Rating

Bidirectional Bubble-tight

Body Style

Flanged End, Butt Weld, FE V/s BW

Design Standard

API 6D, ASME 16.34

Flange Drilling

ASME B16.5

Testing Standard

API 598, ISO 5208, EN 12266-1

Face To Face

ASME B16.10

Applications

Oil & Gas, Wastewater, Seawater, Petrochemicals

Features:
  1. Leak-proof Design: The fully welded construction eliminates leak paths associated with threaded connections and flanges, crucial for critical applications.
  2. High Pressure and Temperature Rating: Can withstand high pressures and temperatures due to the robust construction and forged materials.
  3. Durability and Strength: The forged body and welded construction provide exceptional strength and resistance to wear and tear.
  4. Low Maintenance: The simple design and minimal moving parts contribute to lower maintenance requirements.
  5. Bidirectional Flow: Allow flow in either direction, offering flexibility in piping layouts.
  6. Fire-Safe Option: Available in fire-safe designs that maintain integrity and prevent leakage during fire events (depending on the specific valve and certifications).

Benefits:

  1. Enhanced Safety: Leak-proof design and ability to handle high pressures contribute to a safer operating environment.
  2. Reduced Emissions: Minimizes fugitive emissions due to the leak-proof construction, important for environmental considerations.
  3. Lower Maintenance Costs: Simple design and minimal moving parts translate to less frequent maintenance needs.
  4. Long Service Life: The robust construction and high-quality materials contribute to a long and reliable service life.
  5. Versatility: Suitable for a wide range of applications across various industries due to their pressure rating, bidirectional flow, and material options.

Fully welded ball valves offer a combination of leak-proof operation, high-pressure capabilities, durability, and lower maintenance requirements, making them ideal for demanding industrial applications.

FAQs:

The main advantages of fully welded ball valves include:

    • Leak-proof design: Eliminates potential leak paths due to the absence of threaded connections and flanges.
    • High-pressure and temperature ratings: Can handle more demanding operating conditions due to the robust construction.
    • Increased strength and durability: Forged body and welded construction provide superior strength and resistance to wear and tear.
    • Reduced maintenance needs: Simpler design with minimal moving parts translates to less frequent maintenance.
    • Higher initial cost: The complex manufacturing process can make them more expensive than standard ball valves.
    • Less repairability: Due to the welded construction, repairs are generally more difficult or require valve replacement.
    • Limited size availability: May not be readily available in all sizes compared to standard ball valves.

These valves are ideal for critical applications requiring:

    • High pressure and temperature: Oil & Gas, power plants, chemical processing.
    • Leak-proof operation: Environments where fugitive emissions are a concern.
    • Safety and reliability: Critical applications where failure could have significant consequences.
    • Pressure and temperature rating: Ensure the valve exceeds your application’s requirements.
    • Body and ball material compatibility: Materials should be compatible with the fluids being handled and operating temperature.
    • Port size: Match the valve port size to your piping system.
    • Actuation type: Choose manual, pneumatic, or electric actuation based on your needs.
    • Fire-safe requirements: Select a fire-safe rated valve if fire safety is critical.
    • Fully welded: Leak-proof design, higher pressure rating, robust construction, but less repairable and potentially higher cost.
    • Flanged: Easier to install/remove for maintenance, potentially lower cost, but more susceptible to leaks at flange connections and may have lower pressure ratings.