Leqihao Technology (Shanghai) Co., LTD.
Leqihao Technology (Shanghai) Co., LTD.
Industrial Valves Manufacturer

We specialize in manufacturing high-performance valves for cryogenic, ambient, and high-temperature applications, with core expertise in cryogenic valves developed over 10+ years. Our products leverage patented technologies and rigorous engineering to ensure reliability in extreme conditions (-196°C to 800°C). Unlike competitors, we focus on precision sealing, robust material durability, and customized solutions tailored for LNG, industrial gas, chemical, and energy sectors. Advanced testing protocols and ISO-certified quality control guarantee leak-free performance and long service life. As a trusted partner for global clients, we combine innovation with proven experience to deliver valves that excel in safety, efficiency, and adaptability—positioning us as a leader in cryogenic valve technology.

Cryogenic Valve

Cryogenic valves handle extremely low-temperature fluids like LNG, liquid nitrogen, or oxygen. Constructed from special materials to withstand thermal stress, they prevent leaks and ensure safety in aerospace, medical, and energy industries.

01
High Temperature Valve

High-temperature valves are designed for steam, hot oil, or gases exceeding standard limits. Made from heat-resistant alloys, they maintain integrity under thermal stress. Common in power plants, refineries, and chemical processing for reliable performance.

02
Normal Valve

Normal valves operate at standard temperatures and pressures. They are versatile, cost-effective, and used in water supply, irrigation, and general industrial applications. Materials like brass, stainless steel, or PVC ensure compatibility with various fluids.

03
Ball Valve

A ball valve is a quarter-turn valve that uses a hollow, perforated, and pivoting ball to control flow. It offers excellent shut-off capability and is durable with low maintenance. Commonly used in applications requiring tight sealing, it is suitable for gases, liquids, and corrosive fluids. Its simple design ensures reliability and long service life.

04
Butterfly Valve

A butterfly valve regulates flow using a rotating disc. Compact and lightweight, it is ideal for large pipe diameters. It provides quick operation and low pressure drop. Suitable for water, air, and mild corrosive fluids, it is widely used in HVAC, water treatment, and industrial systems.

05
Check Valve

A check valve allows fluid to flow in one direction only, preventing backflow. It operates automatically, reducing the risk of contamination and damage. Common types include swing, lift, and ball check valves. It is essential in plumbing, wastewater, and chemical industries for system safety.

06
Globe Valve

A globe valve controls flow through a movable disc and stationary ring seat. It offers precise throttling and shut-off, making it ideal for regulating flow. Though it causes higher pressure drops, its reliability suits steam, oil, and gas applications.

07
Gate Valve

A gate valve uses a sliding gate to start or stop flow. It provides minimal pressure drop when fully open and is used for on/off control. Suitable for high-temperature and high-pressure systems, it is common in oil, gas, and water supply pipelines.

08
Regulator Valve

A regulator valve maintains consistent pressure or flow rates in systems. It automatically adjusts to changes, ensuring stability in gas, liquid, or steam applications. Widely used in HVAC, oil refineries, and power plants for efficient process control.

09
Dispensing Gun

A dispensing gun is designed for accurate liquid transfer in industrial or laboratory settings. It controls flow manually or automatically, minimizing spills. Commonly used for fuels, chemicals, and lubricants, it ensures safe and efficient handling of fluids.

010
Industrial Valve Solutions
LNG Storage & Transportation

Our ultra-low-temperature ball valves (-196°C) integrate patented triple-layer stem sealing and thermal isolation sleeves to prevent icing and gas leaks in LNG terminals and tankers. Certified to BS 6364, they ensure 50,000+ cycles in cryogenic service with zero maintenance.

Aerospace Propulsion Systems

Lightweight cryogenic globe valves for liquid oxygen/nitrogen transfer in rocket fueling. Machined from vacuum-treated 316L stainless steel, they achieve ≤0.1% seat leakage (per MSS SP-122) under extreme thermal shocks. Compact designs suit confined launchpad piping networks.

Laboratory Cryogenic Research

Miniature cryo-valves for liquid helium/hydrogen labs. Electropolished surfaces and bellows seals eliminate particle shedding (meets ISO 15848 CLEAN class). Manual/pneumatic actuation options enable precise flow control for superconducting experiments and MRI cooling systems.

Hydrogen Energy Infrastructure

-253°C cryogenic valves for liquid hydrogen storage. Double-wall vacuum jacketing and silver-plated gaskets minimize heat ingress, maintaining 30mW/m² thermal flux. Fire-safe API 607 compliance ensures safety in H2 refueling stations and fuel cell plants.

Established with over a decade of expertise, we specialize in precision-engineered cryogenic valves for extreme-temperature industries. Our core strengths

Deep Cryogenic Mastery: Patented technologies for -269°C to +200°C applications, validated in LNG, aerospace, and hydrogen sectors.

Reliability-Driven Design: ISO 9001-certified processes ensure leak-free, long-lasting performance under 50,000+ pressure cycles.

Material Innovation: Advanced alloys and sealing solutions combat thermal stress/embrittlement, exceeding ASME/BS/API standards.

Tailored Integration: Customized valve systems for complex pipelines, reducing downtime and lifecycle costs.

Trusted by global energy and tech leaders, we deliver mission-critical fluid control through relentless R&D and quality-first manufacturing.

Latest News & Blog about LQH
Nov, 24 2025
Ultimate Guide to Cryogenic Valves: Applications, Types, Standards, and Testing
In the demanding world of industrial operations, cryogenic valves play a pivotal role in managing fluids at ultra-low temperatures. Designed to withstand and perform reliably from -40°F (-40°C) down...
Sep, 24 2025
Comparing Swing Check Valves vs Spring Check Valves
In various industrial setups, check valves play a crucial role in ensuring the unidirectional flow of fluids. Among the myriad of check valve types, swing and spring check valves are particularly prom...
Sep, 16 2025
How Check Valves Prevent Backflow In Pumps?
Fluid systems are integral to many industrial and commercial applications, ranging from water supply systems to sophisticated pneumatic and hydraulic operations. A critical component designed to ensur...
Get To Know More About LQH
L-Q-H Driven: Long-lasting durability, Quality-centered precision, High-performance reliability. Trusted by global industries.