Low temperature valves of globe valve, good sealing and avoid potential rupture
The material of Cryogenic Globe valve should be ensured to have a good cryogenic property, especially its strength against cryogenic impact. Right trim material with enough anti cryogenic impact strength should be chosen to avoid potential rupture. The alloy material containing C & Cr element would lose the strength of anti cryogenic impact with quick speed when temperature comes to below -20 ℃.
Material: Carbon Steel,Stainless Steel,Alloy Steel,Duplex Stainless Steel
Operation: Manual,Gear Operated,Electric Operated,Pneumatic Operated
Applicable: Oil,Chemical,Natural Gas,Petrochemical,Coal Chemical and so on
Material: Carbon Steel,Stainless Steel,Alloy Steel,Duplex Stainless Steel
Operation: Manual,Gear Operated,Electric Operated,Pneumatic Operated
Applicable: Oil,Chemical,Natural Gas,Petrochemical,Coal Chemical and so on
Cryogenic globe valve standard
Design and manufacture standards:BS 6364, BS 1873, API 602, GB/T 24925
Face to face dimensions standards:ASME B 16.10, GB/T 12221
Connection ends standards:ASME B 16.5, GB, JB, HG, SH, BS, DIN, JIS and etc
Testing inspection standards:API 598, BS6364, GB/T 13927, GB/T 26480, JB/T 9092
| Product type |
ON/OFF |
| Product description |
low temperature globe valve |
| Model |
DJ41H-low temperature globe valve |
| Nominal diameter |
2”～24”(50mm～600mm) |
| Operating temperature |
-196℃～300℃(the range of service temperature may vary for different materials) |
| Operating pressure |
150-2500 CLASS |
| Material |
Main material: A351 CF8,CF8M,CF3,CF3M;A352 LCB,LCC, etc. |
| Design standard |
BS 1873 ,BS 6364,ASME B16.34,GB 12235,GB 12224 |
| Structural length |
ASME B16.10 |
| Connecting end |
ASME B16.5,GB 9113 |
| Test standard |
API 598,ISO 5208,JB/T9092,GB/T13927,BS 6364 |
| Operation method |
Elevating hand wheel, non-elevating hand wheel, bevel gear, motor drive unit, pneumatic drive unit |
| Application fields/td> |
For application in fields such as electric power industry, petroleum refining, petrochemical engineering, offshore oil, tap water engineering in urban construction, chemical engineering, etc. |
| Other remarks |
The extension dimensions of valve stem and bonnet may vary according to different temperature ratings. |
| Other remarks 2 |
As valves subject to a temperature ≤-101℃ shall be protected against subzero deformation, the main parts are subzero treated. |
| Other remarks 3 |
The sealing faces of valve seat and valve clack are build-up welded with hard alloy to improve the erosion resistance and extend the service life of valve. |
| Other remarks 4 |
The friction between sealing faces is smaller during opening and closing, facilitating a longer service life. |
| Other remarks 5 |
The valve clack is of taper, needle, ball and parabola types, and can be used to adjust the flow rate. |
| Other remarks 6 |
SS+ graphite or metallic seal or pressure self-sealing is adopted between valve body and bonnet for reliable sealing. |
| Other remarks 7 |
Rising stem structure, making the valve switch position be clear at a glance |
| Other remarks 8 |
The valve stem thread will not come into contact with the medium, so the corrosion of medium to the thread is reduced. |
| Other remarks 9 |
Small switching moment, reliable sealing |
| Other remarks 10 |
The valve clack can be machined into parabola, spherical, needle shapes, etc. according to the requirement of customer. It can be used for adjustment (rough adjustment) on pipeline. |
| Other remarks 11 |
Short stroke is suitable for application at positions subject to frequent opening. |
| Other remarks 12 |
Y-shape stop valve – the streamline flow pass has a very high flow coefficient, and can maximally reduce the pressure drop through the system. |
| Other remarks 13 |
Through improving the structural design and selecting reasonable packing structure and qualified packing supplier, the valves can meet the Class A sealing test requirements of ISO 15848 FE. |
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