Cryogenic Valve

Cryogenic valves are kept in a natural closed position to keep cryogenic gasses or other medium secure and safely contained.

In the oil and gas industry, cryogenic valves serve in the control of liquified gasses such as liquid nitrogen, methane, and helium. Because of the ease and safety of non-pressurized storage and transport, these elements cool to cryogenic temperatures, so they remain in the liquid state.

Uses of Cryogenic Valves

Cryogenic valves are mostly found in industrial facilities to harness the benefits of undergoing processes at cryogenic temperatures. Thus, the following sections highlight some of these applications.

Liquid Nitrogen Gas (LNG) Terminals and Plants

In the oil and gas industry, cryogenic valves serve in the control of liquified gasses such as liquid nitrogen, methane, and helium. Because of the ease and safety of non-pressurized storage and transport, these elements cool to cryogenic temperatures, so they remain in the liquid state. As a result, larger volumes can be transported or stored for some time, while the piping system operates at much lower pressure levels. Before cooling these gasses into liquid, it is necessary to remove condensate, moisture, CO2, and H2S to prevent corrosion problems downstream.

From World War II, the field of cryogenics enjoyed accelerated development with its eventual commercialization in 1966 by Ed Busch. Busch increased metal tool design life by up to two to four times via cryogenic tempering rather than heat treatment. As a result, it is common to find cryogenic valves and accompanying equipment in steel production plants today. Another area of use is in the freezing of foods and biotech products such as vaccines.

Aerospace Applications

In the aerospace industry, cryogenic fuels have gained wide acceptance over the years. Liquid hydrogen and liquid oxygen often serve as propellants for space shuttles, either alone or in combination with jet fuel. The presence of cryogenic valves is a must in such systems.

valve stocking

Types of Cryogenic Valves

The image below shows how a control valve can be used to control rate of flow in a line. The “controller” receives the pressure signals, compares them with pressure drop for the desired flow and if the actual flow is different, adjusts the control valve to increase or decrease the flow.

Comparable arrangements can be devised to control any of numerous process variables. Temperature, pressure, level and flow rate are the most common controlled variables.

As previous sections highlight, there are a variety of cryogenic applications. Similarly, there are a variety of valve types that can serve in these applications, with each having its own benefits. Thus, it is necessary to select the right type that suits an application. Generally, a basic feature of all cryogenic valves is having a tight shut-off. Cryogenic fluids are sensitive, and any leakage can cause harmful and expensive damage.

Cryogenic Butterfly Valves

The triple-offset butterfly valve is an ideal option for cryogenic service. This is due to its non-friction, metal-to-metal seal that provides bubble-tight shut-off and the long-term integrity of the sealing mechanism. Additionally, they offer quick opening and closing action and are the ideal choice for remote operation. The Durco TX3 butterfly valve provides such an example – with excellent shutoff capabilities, low torque, and reduced wear benefit.

Cryogenic Globe Valves

These valves have a spherical shape with a disc that rotates 90° to the plane of its body seat. Therefore, it provides effectiveness for long-term sealing. However, they may not resist erosion for long and are not recommended for systems with high flow rates. Ideally, globes should be provided with a full Stellite valve trim to protect against erosion. Cryogenic fluids tend to lose their lubricity, and the Stellite helps to reduce the wear and tear on the valve.

Cryogenic Ball Valves

The most common valves for liquid gas applications are the double-seal ball valves such as the L&T and AMPO Poyam. Generally, they offer better flow characteristics than globe valves. Also, they are very efficient in providing a tight seal. They also incorporate a vapor space of sufficient height that allows gasification in the area below the gland. Consequently, this keeps the gland packing near the ambient temperature as thermal conductivity between the inside and outside of the valve is limited. Yet, due to wear concerns along the seals and the ball, they find preference in applications with an unrestricted flow path.

Cryogenic Gate Valves

A typical cryogenic gate valve has a wedge-shaped gate, which opens and closes in line with the mating body seat. As a result, there is minimal pressure drop when in a fully open position. Thus, it provides desirable flow characteristics. For larger valve sizes, gate valves such as the Poyam, L&T, and the smaller forged NEWCO Douglas-Chero are preferred in place of ball valves, which can be more costly. However, gates are more difficult and expensive to actuate in comparison to butterfly valves, especially as their size increases, so they are not ideal for remote operation. Gates can be prone to wear and tear if they are subject to often repeated opening and closings. An advantage gate valves have is that due to the metal-to-metal sealing surfaces, they are not subject to the cold flow that Teflon seals in ball valves tend to see.

Valve Materials

We offer valves of various materials which can meet your needs on diverse occasions. Come get your valves right now!

Our Valves materials can be the following grade, another grade is also available on request.

valve application natual gas pipeline


Valves are found in virtually every industrial process, including water and sewage processing, mining, power generation, processing of oil, gas and petroleum, food manufacturing, chemical and plastic manufacturing and many other fields.

valve application 01


valve application 02


valve application 03

Thermal Power Plant

valve application 04

Steel Plant

valve application 05

Water Supply

valve application 06

Natural Gas Pipeline

Quality Control

A valve can be described as a mechanism that controls the passage of liquids through a pipe. Research states that valves being manufactured in China are amongst the top valve competitors in the valve industry.

Nondestructive Test

quality control nondestructive test 01
quality control nondestructive test 02
quality control nondestructive test 03

Radiography Inspection guarantees no failures inside of the castings or forgings. Ultrasonic inspection acts an alternative of inspection. Dye penetrant testing and magnetic particle testing can examine surface failures on castings and forgings.

Cryogenic Treatment

quality control cryogenic treatment 01
quality control cryogenic treatment 02
quality control cryogenic treatment 03

-196 ℃ Cryogenic Treatment System is a basic treatment for LNG usage valves or similiar applications.

Leakage Test

quality control leakage test 01
quality control leakage test 02
quality control leakage test 03

Leak testing is a procedure that inspectors use to determine whether an object or system is functioning within a specific leak limit.

Chemical Analysis

quality control chemical analysis 01
quality control chemical analysis 02

All our materials are strictly made under supervision of ladle analysis instrument in the foundries and inspected by high precision spectroanalysis instrument when they arrive in our plant.

Mechanical Properties Test

quality control mechanical properties test 01
quality control mechanical properties test 02

All mechanical properties test will act before we use the materials to secure the performance and safety.

Heat Treatment

quality control heat treatment 01
quality control heat treatment 02

Up to 1200 ℃ electric furnance provide an availability of various heat treatment cycles.

Frequently Asked Questions


How long is your delivery time?

The delivery time of customized products is generally 25 35 days, and non customized products are generally shipped within 24 hours after payment.

What are your payment terms?

T/T 30% as the deposit,The balance payment is paid in full before shipment

What is your minimum order quantity?

There is no minimum order quantity requirement. Customized products are tailor made according to the drawings provided by the customer.

Do you provide samples? Is it free?

If the value of the sample is low, we will provide it for free, but the freight needs to be paid by the customer. But for some high value samples, we need to charge a fee.

What is the packaging and transportation form?

Non steaming wooden box and iron frame packaging. Special packaging is available according to customer needs. The transportation is mainly by sea.


As part of our quality regimen, 100% of incoming raw materials, semi-finished products, as well as finished products are thoroughly inspected prior to being entered into our inventory. We have established multiple hold points throughout fabrication as well as a comprehensive final inspection for all products.

Need to inquire about our products? Fill out the form below and our staff will be in touch!
Contact Form Demo

Why Do I Need Wear Parts?

“Wear” is the last thing any business wants to experience with their machines. Apart from its unpleasant physicality, it could also be a sign that means your parts and/or components are about to break. You need wear parts to help prevent or prolong the wearing out of these parts and components – and that could be any type of wear parts such as pipes, liners, plates, etc.

What Kinds of Wear Plates Do You Offer?

Here at Sunny Steel, we put emphasis to the primary kinds and types of wear pipes and fittings – they include:
  • Ceramic Liner pipes and fittings
  • Ceramic tile lined pipes and fittings
  • Ceramic sleeve lined pipes and fittings
  • Cast basalt lined pipes and fittings
All of them have their particular uses, but these cover almost all the materials companies need to work on.

Merits and Salient Features

  • Extremely High Resistant to Abrasion, Erosion and Corrosion.
  • Resistant to most of the Chemicals, Alkalis and Acids.
  • Very Long life
  • Less Down time and Maintenance Cost.
application of rare earth alloy wear resistant pipe

Thermal power stations – raw coal chutes/ hoppers, feed bunker/coal bunker, ash pits, crushers, bottom ash, disposal slurry, dust lines/ bends, pipeline/bends, fly ash. Trenches below hopper and pipelines, pulverized coal piping.

Cement plants – dynamic air separators, raw mill ducts/ chutes, drag chain conveyor, grate cooler housing, air separator/ cyclones, coal handling, coal hopper/ chutes, cement conveying, slurry lines/ bends lines/ bends, discharge boxes / bankers, lime/silica hoppers/chutes, chain conveyor housing, mixers/nozzles, coal ventury.

Steel plants – coke sorting unit, coal bunkers / sinter bunkers, lime bunkers, coke breeze, sinter plant cyclones, sinter plant flow conveyors, iron slurry line, thick slurry lines, air lift pipes, telescopic pipes, granulated slag, hot mill flume.

Coal washeries – coal washing plants, coal transportation, conveyor chutes/pipes, floatation cells, media sumps, centrifuges, cyclones, sieves.