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Class 900 Reduced Port Forged DBB Trunnion-Mounted Cryogenic Ball Valve

Reduced Port Design: Minimizes turbulence and pressure drop, optimizing flow control in critical cryogenic systems.

DBB Technology: Double Block and Bleed (DBB) design guarantees leak prevention and enhanced safety in extreme environments.

Forged Trunnion-Mounted Construction: Offers superior stability and durability, ensuring reliable performance under high-pressure and low-temperature conditions.

Cryogenic Performance: Reliable sealing and performance in temperatures as low as -196°C, ideal for LNG, Liquid Nitrogen (LN₂), and Liquid Oxygen (LOX).

Rigorous Testing & Materials: Available in A350 LF2, Inconel 625, and Hastelloy, with each valve rigorously tested in-house for consistent quality and long service life.

    Product Parameters

    Size 2"to 36" (DN50~DN900)
    Nominal Pressure Class 900 (Optional Class150 / 300 / 600 / 1500/ 2500)
    Operating Temperature ≥ -196°C
    Assembly Method Side Entry / Top Entry
    Ball Type Trunnion-mounted, 2~3Pieces
    Body Material A350 LF2, A350 LF3, AISI 4130, AISI 4140, A182 F304, A182 F316, A182 F316L, A182 F51 (S32205), A182 F53 (S32750), Inconel 625, Incoloy 800, Hastelloy C-276, ect.
    Seats PEEK, PCTFE (KEL-F), Devlon V-API, PTFE
    Design Standards GB/T14925, BS5351, MESCSPET7/200, ASMEB16.34
    Connection Flanged
    Drive Mode Handle, Worm Gear, Electric, Pneumatic, Hydraulic
    Application Field LHe, LH₂, LNG, LN₂, LOX, LCO₂, etc.
    Brand SLVCN

    Key Features

    Reduced Port Design

    Minimizes turbulence and pressure drop, making it ideal for flow-sensitive applications.

    DBB Technology

    Double Block and Bleed (DBB) design ensures superior safety and leak prevention.

    Trunnion-Mounted Forged Construction

    Enhances stability and durability in high-pressure and low-temperature environments.

    Cryogenic Performance

    Guarantees reliable sealing and performance at temperatures as low as -196°C.

    Materials

    Available in A350 LF2, Inconel 625, Hastelloy C, and other materials to meet diverse industrial needs.

    Rigorous Testing

    Each valve undergoes comprehensive in-house cryogenic testing to ensure consistent, reliable performance.

    Product Details

    The SLVCN Class 900 Reduced Port Forged DBB Trunnion-Mounted Cryogenic Ball Valve is built for reliable shut-off in extreme low-temperature applications. Its reduced port design minimizes turbulence and pressure drop, making it ideal for flow-sensitive systems.

    With a forged trunnion-mounted construction and Double Block and Bleed (DBB) technology, this valve ensures safety, leak prevention, and easy maintenance. It is perfect for cryogenic fluids like LNG, Liquid Nitrogen (LN₂), and Liquid Oxygen (LOX), delivering dependable performance in harsh conditions.

    Available in materials such as A350 LF2, Inconel 625, and Hastelloy, it meets global standards (ASME B16.34, GB/T14925). Each valve is rigorously tested in-house for consistent quality and long service life in low-temperature environments.

    Class 900 Reduced Port Forged DBB Trunnion

    Parts List

    Technical Specifications

    Dimensions: Class 900 - Reduced Port

    Size Bore Side Entry Top Entry
    Face to Face D in/mm D1 in/mm Weight Face to Face D2 in/mm Weight
    NPS/DN B1 in/mm B2 in/mm RF in/mm RTJ in/mm BWE in/mm Model GG lb/kg Model GW lb/kg RF in/mm RTJ in/mm BWE in/mm Model FT lb/kg
    2"×11/2" 1.93 1.5 14.5 14.63 14.5 8.5 8.5 108 108 14.5 14.63 14.5 8.5 110
    50×40 49 38 368 371 368 216 216 49 49 368 371 368 216 50
    3"X2" 2.94 1.94 15 15.13 15 9.5 9.5 150 150 15 15.13 15 9.5 159
    80×50 74 49 381 384 381 241 241 68 68 381 384 381 241 72
    4"X3" 3.94 2.94 18 18.13 18 11.5 11.5 254 254 18 18.13 18 11.5 320
    100×80 100 74 457 460 457 291 291 115 115 457 460 457 291 145
    6"×4" 5.94 3.94 24 24.13 24 15 15 481 481 24 24.13 24 15 595
    150×100 150 100 610 613 610 381 381 218 218 610 613 610 381 270
    8"×6" 7.94 5.94 29 29.13 29 18.5 18.5 948 948 29 29.13 29 18.5 1257

    Weight and dimensions for larger valve sizes up to 36" available on request

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    If you want to obtain the complete size, please contact us

    Contact us

    Why Choose Us

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    Decades of Expertise

    30+ years specializing in DBB, trunnion-mounted, forged & fully welded valves for high-temperature, high-pressure, and cryogenic service, trusted by projects worldwide.
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    Tailored Solutions

    Custom-designed valves based on process conditions and project specifications, ensuring reliable performance under demanding operating conditions.
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    Rigorous Quality Control

    ISO 9001-managed design, manufacturing, and testing in accordance with API 6D, ASME B16.34, and fire-safe standards.
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    Proven Reliability

    Every valve is fully tested and inspected, delivering zero-leakage, project-ready valves you can trust.
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    Certificate Display

    SLVCN operates under an ISO 9001 quality management system. Products are supplied with CE conformity, Mill Test Certificates (MTC), and Certificates of Origin as required.

    Valves are designed, manufactured, and tested in accordance with API 6D, ASME B16.34, API 607, and ISO 10497 fire-safe standards, ensuring reliable performance in high-pressure and extreme service conditions.

    CE-New

    CE Certificate

    ISO9001-New(1)

    ISO9001 Certificate

    certificate 2

    Certificate for Credit for Quality Service

    certificate 3

    Certificate of Observing Contract and Keeping Promise

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    Trademark Certificate

    0102030405

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