Manual Low Temperature Steel Cryogenic Globe Valve With Extension Stem

Manual Operation Low Temperature Steel Cryogenic Globe Valve With Extenion Stem

Product Description

Features

1. Excellent technology:

With experiences of more than 10 years, we keep the lead in the valve technology.

2. Advanced equipment:

With advanced processing equipment and testing method, we provide the integration of automation system solutions for product, engineering, service and training.

3. Strong team:

We have many senior engineers with plenty of research, development, design

experience, providing professional service for sales and after sales.

4. Good quality:

We do 100% test on the valves, providing reliable and stable quality, good performance, long life time.

5. Full series of products:

Our product line covers full category of valves, meet the general standard of every country in the world, such as GB, DIN, ASTM, BS, JIS.

6. Professional after sales service:

We have the professional engineer team to provide the 7/24 service.

7. Certificates:

passed the ISO9001 certificate as well as CE,ISOetc.

8. Fast delivery time:

Most casting parts are at the stock, fast delivery time could be guarantee.

9. Packing:

Goods are packed strictly as per the exporting standard or as per the customized request.

10. Long-term quality warranty time:

Twelve months quality warranty time is provided

Casting technology

Our cryogenic service valve castings are typically made of modified ASTM CF8M austenitic stainless steel which contains a higher percent nickel to minimize transformation of an austenitic structure to a martensitic structure. This undesirable transformation occurs when valve parts are machined during production process (or subjected to mechanical stress), which make them vulnerable to distortion, when valve assemblies are exposed to extremely low temperature in the field. This must be prevented during production because of subsequently degraded seat face precision, and resultant concern of seat leakage. By the way, a higher nickel content usually lowers the temperature where martensitic transformation begins (Martensitic Transformation Temperature or MTT in short, only in this article below). For this reason, our foundries always ensure proper adjustment of other chemicals such as carbon and chromium to make MTT lower.