Shoulong Valve
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Double-Block-and-Bleed (DBB), Anti-Static, Fire-Safe (API 607), Anti-Blowout Stem, and Low Fugitive Emission Packing (ISO 15848) provide comprehensive protection, ensuring maximum safety and leak prevention.
PCTFE Cryogenic Seat and Lip-Seal Compensation deliver a tight, leak-free seal even in extreme conditions as low as -196°C.
Deep Cryogenic Treatment for all pressure components and an extended cryogenic stem ensure reliable performance at temperatures as low as -46°C, handling both extreme cold and high-pressure conditions.
Each valve undergoes rigorous testing in our in-house cryogenic facility, ensuring dependable operation in the harshest low-temperature environments.
Ideal for cryogenic fluids like Liquid Helium (LHe), Liquid Hydrogen (LH), LNG, Liquid Nitrogen (LN), and Liquid Oxygen (LOX), as well as high-flow pipelines and large storage tanks.
Available in a wide range of sizes and materials (A350 LF2, A350 LF3, AISI 4130, 4140, A182 F304, F316, F316L, A182 F51, F53, Inconel 625, Incoloy 800, Hastelloy C, etc.) to meet diverse industrial requirements.
DBB design provides two independent sealing points with a bleed port between them. This allows operators to safely isolate and verify zero pressure in the valve cavity, significantly reducing the risk of fugitive emissions and leakage — a critical safety requirement in cryogenic and high-pressure applications.
Our cryogenic valves are designed to operate reliably at temperatures as low as -196°C, made possible by the PCTFE Cryogenic Seat and Lip-Seal Compensation technology. Pressure components with Deep Cryogenic Treatment ensure structural integrity down to -46°C and beyond.
These valves are suitable for a broad range of cryogenic media including Liquid Helium (LHe), Liquid Hydrogen (LH), LNG (Liquefied Natural Gas), Liquid Nitrogen (LN), and Liquid Oxygen (LOX). They are also well-suited for high-flow pipeline systems and large-capacity storage tank installations.
Yes. These valves are available in a wide selection of materials including A350 LF2, A350 LF3, AISI 4130, 4140, A182 F304, F316, F316L, A182 F51, F53, Inconel 625, Incoloy 800, Hastelloy C, and more. Custom sizing is also offered to meet the specific demands of diverse industrial applications.
Every valve undergoes rigorous in-house cryogenic testing in our dedicated testing facility. This process simulates real-world low-temperature and high-pressure operating conditions to verify sealing performance, structural integrity, and functional reliability before the valve is shipped to the customer.
These cryogenic valves comply with internationally recognized industry standards including API 607 (Fire-Safe testing), ISO 15848 (Low Fugitive Emission Packing), and other relevant pressure equipment and valve safety standards, ensuring they meet the stringent requirements of global industrial operators.
