API Forged steel low temperature lift check valves, cryogenic valve
with good seals
Size: NPS1/2～NPS4 ,DN15～DN100
Rating: Class150～Class2500
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
Kelite is specialized in manufacturing API Forged Steel Cryogenic
Lift Check valve. The structure of Cryogenic Lift check valve is
very similar with Globe valve with the disc doing up and down
movement during valve's operation. It has a reliable sealing but
with relatively high flowing resistance. Stainless steel Cryogenic
Check valve is suitable for small size area. Cryogenic Lift check
valve could be in through type or vertical type. The through type
lift check valve could only be installed on horizontal pipeline,
while the vertical type lift check valve is usually on vertical
pipeline.
API Forged steel cryogenic lift check valve is used for inflammable
and explosive liquid medium such as ethylene, liquid oxygen, liquid
hydrogen, LNG, liquefied petroleum product and etc. As forged steel
cryogenic lift check valve is an automatic valve realizing the
opening and closing all by the force of mediu, so there is no need
of long neck structure. All the components of cryogenic lift check
valve would be immersed in cooling medium for 2-8 hours after raw
machining to release the stress and ensure its cryogenic property.
API Forged Steel Cryogenic Lift Check valves are suitable for use
on various kinds of pipeline from Class150 To Class1500, PN16 To
PN250 to cut off or connect the flowing of medium. By using
different material, the valves could be suitable for medium such as
water, steam, oil, nitric acid, acetic acid, oxidizing substance,
carbamide and etc.
Working Principle of API Forged Steel Cryogenic Lift Check Valve:
When the medium passing through the valve from the inlet port, the
valve would open if the pressure force of medium exceeds the
gravity of disc. However, when the pressure force of backflow
medium plus the force of disc's gravity is bigger than the medium
force from the inlet side, the valve would close itself to prevent
the backflow.
API Forged Steel Cryogenic Lift Check Valve product features
The valves has the features of Good sealing, reliable, safety and
long life span.
API Forged Steel Cryogenic Lift Check valves developed by Chaoda
have following good characteristics: good sealing performance,
reliable safety guarantee, long life span and etc.
API Forged or casted steel cryogenic lift check valve, cryogenic
valve standard
Design and manufacture standards:BS 6364, API 602, API 6D
Face to face dimensions standards:ASME B 16.10
Connection ends standards:ASME B 16.5
Testing inspection standards:API 598, BS6364
| Product type | API Forged steel cryogenic lift check valve, cryogenic valve |
| Product description | low temperature |
| Model | cryogenic lift check valve |
| Nominal diameter | 2”～4” |
| Operating temperature | -196℃～300℃(the range of service temperature may vary for different
materials) |
| Operating pressure | 150-2500 CLASS |
| Material | Main material: LF2,304,304L 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 |
| |
| Application fields | 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. |
