SiChuan Liangchuan Mechanical Equipment Co.,Ltd
SiChuan Liangchuan Mechanical Equipment Co.,Ltd
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LN2 Cryogenic DN25 Socket Weld Globe Valve DJ61F-40P
Product Description Of Cryogenic Globe Valve
Cryogenic valves are very similar to conventional valves, with the exception of materials and features such as an extended stem. These extended stems allow handles or actuators to be at an ambient temperature.
| Name: Cryogenic Globe Valve | |
| Main technical parameters: | Nominal diameter: DN10-250mm |
| Nominal Pressure: PN4.0MPa | |
| Applicable medium: O2, N2, Ar, LNG | |
| Applicable temperature: -80℃~+80℃ | |
| Connecting format: | |
| Material: | Body: CF8 |
| Bonnet: 06Cr19NI10 | |
| Stem: 06Cr19NI10 | |
| Packing: PTFE | |
| Disc face ring:PCTFE | |
Our factory makes the following commitments in terms of after-sales service if your company ordered valves in our company:
1. Our company implements warranty on product quality for twelve months;
2. Once the contract is signed, quality and quantity can be guaranteed and valves will be delivered on time;
3. We ensures that the valves provided meet the standards as long as it is mentioned in the contract;
4. For the technical consultation of the demand side, answers will be given at any time;
5. When delivering the valves, the factory will provide the following materials to the purchaser: delivery list, product certificate, product sample, product instruction manual, technical information;
After the user receives the goods, if there is a letter or phone call about quality problems, we guarantee to reply within 24 hours to solve the problem as soon as possible
Si Chuan Liangchuan Mechanical Equipment Co.,Ltd. is a high-techenterprise with a number of national new technology patents. Our companyadopts advanced technology and production technology,integrates multi-partyresources, deepens the strength of science and technology, and wins the trustand support of customers with high-quality products and services.Our company is committed to the research,development,manufacturing,sales of cryogenic valves,pipeline valves and gas equipments(such ascryogenic liquid storage tanks,tank trucks,cryogenic container). We producehigh-precision products,which are trusted by customers.Products are widelyused in cryogenic liquid storage and transportation,air separation,gas,food,pharmaceutical, petroleum, chemical, metallurgical and other industries.
FAQ
Q. Are there any special requirements for OEM purchases?
A. Yes. Liangchuan requires proof of trademark registration in order to print or emboss your trademark onto the product or packaging.
Q. Do Liangchuan products come with a warranty ?
A. Yes. That's why we offer 3-year product life guarantee, and a generous1 year warranty on all purchases that begins with the bill of loading.
Q. How can I get some samples?
A. Usually we don’t offer free sample and express fee are required, the sample cost can be deducted from your first large order.
Q. What's the MOQ of your products?
A. Our MOQ is one (5) piece/set.
Q. Are you a manufacturer with your own factory?
A. Yes, we are the manufacturer for more than 8 years
Q:What’s the minimum quantity of order for butterfly valves?
A:You can order even 5 piece,the difference is only the prices,as we must consider all thextra cost for the small order.
Q:What’s the delivery time of your valves?
A:For most of the valves,we have stock of valve parts,it’s possible to deliver in 1-3 weeks.
Q:What’s the warranty of your products?
A:We normally offer 12 months of warranty in service or 18 months since shipping date.
The sealing surface is the most critical working surface of the valve. The quality of the sealing surface directly affects the service life of the valve. The material of the sealing surface is an important factor to ensure the quality of the sealing surface. Therefore, the following factors should be considered when selecting valve sealing surface materials:
①Corrosion resistance.
"Corrosion" is the process in which the sealing surface is damaged under the action of the medium. If the surface is damaged in this way, the sealing performance cannot be guaranteed. Therefore, the sealing surface material must be corrosion resistant. The corrosion resistance of the material mainly depends on the material and its chemical stability.
②Anti-abrasion.
"Abrasion" refers to the damage caused by friction of the material during the relative movement of the sealing surface. This kind of damage will inevitably cause damage to the sealing surface. Therefore, the sealing surface material must have good scratch resistance, especially for gate valves. The scratch resistance of a material is often determined by the internal properties of the material.
③Erosion resistant.
"Erosion" refers to the process of destroying the sealing surface when the medium flows through the sealing surface at high speed. This kind of damage is more obvious in throttling valves and safety valves used in high-temperature and high-pressure steam media, and has a great impact on the damage of sealing. Therefore, erosion resistance is also one of the important requirements for sealing surface materials.
④ There should be a certain degree of hardness, and the hardness will drop greatly under the specified working temperature.
⑤The coefficient of linear expansion of the sealing surface and the body material should be similar, which is more important for the structure of the inlaid sealing ring, so as to avoid excessive stress and loosening at high temperatures.
⑥Used under high temperature conditions, there must be sufficient anti-oxidation, thermal fatigue resistance and thermal cycle problems.
Under the current situation, it is difficult to find a sealing surface material that fully meets the above requirements. It can only meet certain requirements according to different valve types and uses. For example, valves used in high-speed media should pay special attention to the erosion resistance requirements of the sealing surface; when the medium contains solid impurities, the sealing surface material with higher hardness should be selected.
