Cryogenic Gate Valve

Category： Cryogenic Gate Valve
Product description：

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Cryogenic gate valves are tailored for unique operational environments, thriving in temperatures plummeting below -40ºC, and are predominantly employed within gas liquefaction systems. Their distinctive elongated bonnets immediately catch the eye, strategically positioned to ensure stem integrity amidst the flow's severe cold, while also functioning as a thermal barrier, minimizing heat transfer from the exterior to the valve's interior. This innovative design not only fosters energy efficiency but also enhances system performance.
ACEV's cryogenic gate valves boast a revolutionary flexible wedge design, ensuring minimal leakage and seamless operation even at minimal pressure differentials. Their lightweight construction and robustness make them ideal for industrial gas transportation applications.
ACEV offers two elegant bonnet designs for its cryogenic gate valves. The Bolted Bonnet variant features a male-female joint with a spiral wound gasket crafted from F316L and graphite, with ring joint gasket options available upon request. Alternatively, the Welded Bonnet design sports a threaded and seal-welded joint, with an optional full penetration weld for ultimate durability.
ACEV Flow Control crafts cryogenic gate valves adhering to rigorous standards such as API 600, API 602, ASME B16.34, BS 6364, and MSS SP-134.
For API 600 specifications, the bonnet is crafted from cast steel, incorporating an integral backseat for added strength. Alternatively, API 602 valves feature a forged steel bonnet with an integral backseat, ensuring robustness and reliability.
All gate valves in our portfolio are fully traceable and utilize API 622 and API 624-approved packing to minimize emissions. They come in both bolted and welded bonnet configurations, offering reduced and full port options, as well as threaded, socket-welded, and flanged end connections for versatile installations. An optional degrease, clean, and seal process is available to safeguard against contamination, ensuring pristine valve performance.

Cryogenic Forged Gate Valve
ACEV's cryogenic forged gate valves are expertly adapted to the unique challenges of cryogenic service conditions. Featuring extended bonnets with a gas column length tailored to customer specifications, these valves ensure that the stem packing remains sufficiently distant from the cold fluid, maintaining functionality throughout.
Available in sizes ranging from 1/2" to 2" (DN15 - DN50), our valves undergo rigorous degreasing and cleaning processes, making them ideal for applications involving liquid nitrogen, liquid hydrogen, liquid oxygen, and other cryogenic fluids. They excel in diverse fields such as the electric power industry, petroleum refining, petrochemical engineering, offshore oil extraction, urban chemical engineering, and other ultra-low temperature environments.

Cryogenic Cast Gate Valve
ACEV's cast steel gate valves are meticulously designed to cater to the unique demands of cryogenic service conditions. The design structure is tailored to the specific temperature requirements of the user's working environment, with the valve body crafted from a diverse range of stainless steel and alloy materials. Adhering to standards such as API 600, API 623, BS1868, and BS 6364, these valves embody excellence in design and manufacture.
Key highlights include:
·Extended Bonnets: Customized with sufficient gas column length as specified by the customer, ensuring the stem packing maintains a functional distance from the cold fluid.
·Flexible Wedges: Featuring alloy seating faces specifically engineered for cryogenic applications.
·Thorough Cleaning: All cryogenic valves undergo rigorous degreasing and cleaning processes, with pipe ends sealed to safeguard against contamination.

Cryogenic Extended Bonnet Gate Valve
An extended bonnet serves dual purposes in both low and high-temperature applications, safeguarding the stuffing box and preventing stem packing leakage.
In low-temperature applications, such as LNG systems, ethylene liquids, oxygen, liquid hydrogen, and liquefied natural gas, the handling of liquefied gases like oxygen, nitrogen, argon, natural gas, hydrogen, or helium (reaching temperatures as low as -320°F/-196°C) poses significant technical challenges. ACEV's specially designed extended bonnet gate valves provide reliable and efficient solutions for these demanding environments.
For high-temperature applications, including steam systems and sour service, ACEV offers extended bonnet gate valves that are available as forged or cast, with a range of exotic materials and quick delivery times.

Cryogenic Bellow Seal Gate
ACEV has introduced a cutting-edge range of bellows seal valves tailored for hydrogen transfer applications. These valves boast an array of innovative design elements, rendering them ideally suited for diverse hydrogen transfer needs. Offered in various sizes and configurations, they cater to the specific requirements of different applications.
The valves are equipped with long-lasting bellows capable of enduring up to 3000 cycles. For Class 800, they feature Grade 321 stainless steel, while Class 1500 options come with Grade 321 or Inconel. For chlorine service, Hastelloy C is utilized. Custom material options are available upon request.
A non-rotating stem design prevents bellows torsion, ensuring durability. Furthermore, two secondary stem seals—the stem backseat and stem packing—guarantee impeccable sealing even if the bellows sustain damage. The seating surface, faced with Stellite 6 on both the seat and wedge/disc, enhances its lifespan by preventing seizing and galling.
Each bellows assembly undergoes a rigorous helium leak test using a detector with a sensitivity of 10 cc/sec, ensuring optimal performance. The bellows themselves are crafted from materials such as SS321, Inconel 625, Hastelloy, and Monel, among others.

Ranges and Specifications:
Sizes range from 1/2" to 48" (DN15 to DN1200), with pressure ratings from ASME CLASS 150 to 2500 (PN16 to PN420) and temperature tolerance spanning -196°C to 816°C (-320°F to 1500°F).

Construction Highlights:
·Bolted Bonnet (BB) for ratings up to 900LB, Pressure Seal Bonnet (PSB) for 1500LB and 2500LB.
·Forged or Cast Steel construction.
·Outside Screw & Yoke (OS&Y) design.
·Rising stem and handwheel for easy operation.
·Integral backseat and body seat for robust sealing.
·End connections include flanged (RF, FF, RTJ, etc.), butt-welded (BW), socket-welded (SW), and threaded options.
·Operable via handwheel, gear, or actuator (pneumatic, electric, hydraulic).
·Body materials such as Low Temp Carbon Steel and Stainless Steel.

Applicable Standards and Dimensions:
·Designed according to BS 6364, API 602, and ASME B16.34.
·Flanged ends conform to ASME B16.5; butt-welded ends to ASME B16.25; socket-welded ends to ASME B16.11; and threaded ends to ASME B1.20.1.
·Face-to-face dimensions adhere to ASME B16.10, EN558, JIS B2002, and MSS SP72.
·Pressure-temperature ratings comply with ASME B16.34.
·Mounting pad (top flange) conforms to ISO 5211.

Inspection, Testing, and Certification:
·Inspected and tested according to API 598, EN12266, MSS SP82, and ISO 5208.
·Fugitive emission testing per ISO 15848, API 624, and API 641.
·Firesafe certification includes API 607, API 6FA, and ISO10497.

Optional Features:
·Welded bonnet.
·Extended bonnet.
·Bellows seal for additional sealing capabilities.
·Vacuum function.
·Fugitive emission control.
·Compliance with NACE MR-0175 or MR-0103 for corrosion resistance.

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Cryogenic Gate Valve

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