The valve can be installed on the pipeline for low temp and cryogenic medium, can be used as the on–off device to control and shut off the medium.
OS & Y, outside screw and yoke;
BB, bolted bonnet;
The extended bonnet can be designed according to the using environment or clients' requirement to ensure the packing working well.
Operator: handwheel, bevel gear, electric etc.
| Design And Manufacture | Face to Face | Flange Dimension | Pressure Temperature Rating | Inspection And Test |
|---|---|---|---|---|
| JB/T 7749 | GB 12221 | JB 79 / HG/T 20592 | GB 9131 / GB/T 12224 | GB/T 13927-2008 / GB/T 26480-2011 |
(MPa)
| Test Item | 1.6 | 2.5 | 4.0 |
|---|---|---|---|
| Shell Test | 2.4 | 3.75 | 6.0 |
| Water Seal Test | 1.76 | 2.75 | 4.4 |
| Back Seat Test | 1.76 | 2.75 | 4.4 |
| Air Seal Test | 0.4–0.7 | 0.4–0.7 | 0.4–0.7 |
| Body / Cover / Disc | Stem | Sealing Face | Shim | Packing | Working Temperature (°C) | Suitable Medium |
|---|---|---|---|---|---|---|
| LCB | 1Cr17Ni12 | STL / STL | 1Cr13 / Flexible Graphite | PTFE / PTFE Soaked Flexible Graphite | -46 | Propane / Propylene |
| LC1 | 1Cr17Ni12 | STL / STL | 1Cr13 / Flexible Graphite | PTFE / PTFE Soaked Flexible Graphite | -60 | Methanol |
| LC2 | 1Cr17Ni12 | STL / STL | 1Cr13 / Flexible Graphite | PTFE / PTFE Soaked Flexible Graphite | -73 | Ethane |
| LC3 | 1Cr18Ni9Ti | STL / STL | Flexible Graphite / Sub-Zero Asbestos | Asbestos String With Flexible Graphite | -101 | Coal-gas |
| LC4 | 1Cr18Ni9Ti | STL / STL | Flexible Graphite / Sub-Zero Asbestos | Asbestos String With Flexible Graphite | -115 | Liquid Ammonia |
| CF8 | 1Cr18Ni9Ti | STL / STL | Flexible Graphite / Sub-Zero Asbestos | Asbestos String With Flexible Graphite | -196 | Liquid Ammonia |
DJ41Y-16 Series
| Type | DN | L | D | D1 | D2 | b | n-Φd | H (-46°C) | H (-101°C) | H (-196°C) | D0 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DJ41Y-16L / DJ41Y-16LC1 / DJ41Y-16LC2 / DJ41Y-16LC3 / DJ41Y-16LC4 / DJ41Y-16P / DJ41Y-16R | 50 | 230 | 160 | 125 | 100 | 16 | 4-Φ18 | 460 | 480 | 520 | 240 |
| 65 | 290 | 180 | 145 | 120 | 18 | 4-Φ18 | 475 | 505 | 525 | 280 | |
| 80 | 310 | 195 | 160 | 135 | 20 | 8-Φ18 | 520 | 550 | 590 | 280 | |
| 100 | 350 | 215 | 180 | 155 | 20 | 8-Φ18 | 545 | 575 | 615 | 320 | |
| 125 | 400 | 245 | 210 | 185 | 22 | 8-Φ18 | 590 | 620 | 660 | 360 | |
| 150 | 480 | 280 | 240 | 210 | 24 | 8-Φ23 | 650 | 680 | 730 | 400 | |
| 200 | 600 | 335 | 295 | 265 | 26 | 12-Φ23 | 850 | 880 | 930 | 400 | |
| 250 | 650 | 405 | 355 | 320 | 30 | 12-Φ25 | 956 | 986 | 1036 | 450 | |
| 300 | 750 | 460 | 410 | 375 | 30 | 12-Φ25 | 1095 | 1125 | 1175 | 500 |
DJ41Y-25 Series
| Type | DN | L | D | D1 | D2 | b | n-Φd | H (-46°C) | H (-101°C) | H (-196°C) | D0 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DJ41Y-25LCB / DJ41Y-25LC1 / DJ41Y-25LC2 / DJ41Y-25LC3 / DJ41Y-25LC4 / DJ41Y-25P / DJ41Y-25R | 50 | 230 | 160 | 125 | 100 | 20 | 4-Φ18 | 460 | 460 | 520 | 240 |
| 65 | 290 | 180 | 145 | 120 | 22 | 8-Φ18 | 475 | 505 | 525 | 280 | |
| 80 | 310 | 195 | 160 | 135 | 22 | 8-Φ18 | 520 | 550 | 590 | 280 | |
| 100 | 350 | 230 | 190 | 160 | 24 | 8-Φ23 | 545 | 575 | 615 | 320 | |
| 125 | 400 | 270 | 220 | 188 | 28 | 8-Φ25 | 590 | 620 | 660 | 360 | |
| 150 | 480 | 300 | 250 | 218 | 30 | 8-Φ25 | 650 | 680 | 730 | 400 | |
| 200 | 600 | 360 | 310 | 278 | 34 | 12-Φ25 | 850 | 880 | 930 | 400 | |
| 250 | 650 | 425 | 370 | 332 | 36 | 12-Φ30 | 956 | 986 | 1036 | 450 | |
| 300 | 750 | 485 | 430 | 390 | 40 | 16-Φ30 | 1095 | 1125 | 1175 | 500 |
DJ41Y-40 Series
| Type | DN | L | D | D1 | D2 | b | n-Φd | H (-46°C) | H (-101°C) | H (-196°C) | D0 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DJ41Y-40L / DJ41Y-40LC1 / DJ41Y-40LC2 / DJ41Y-40LC3 / DJ41Y-40LC4 / DJ41Y-40P / DJ41Y-40R | 50 | 230 | 160 | 125 | 100 | 20 | 4-Φ18 | 483 | 504 | 546 | 240 |
| 65 | 290 | 180 | 145 | 120 | 22 | 8-Φ18 | 499 | 530 | 551 | 280 | |
| 80 | 310 | 195 | 160 | 135 | 22 | 8-Φ18 | 546 | 578 | 620 | 280 | |
| 100 | 350 | 230 | 190 | 160 | 24 | 8-Φ23 | 572 | 604 | 646 | 320 | |
| 125 | 400 | 270 | 220 | 188 | 28 | 8-Φ25 | 620 | 651 | 693 | 360 | |
| 150 | 480 | 300 | 250 | 218 | 30 | 8-Φ25 | 683 | 741 | 767 | 400 | |
| 200 | 600 | 375 | 320 | 282 | 38 | 12-Φ30 | 893 | 924 | 977 | 400 | |
| 250 | 650 | 445 | 385 | 345 | 42 | 12-Φ34 | 1004 | 1035 | 1088 | 450 | |
| 300 | 750 | 510 | 450 | 408 | 46 | 16-Φ34 | 1150 | 1181 | 1234 | 500 |
Step 1: Order and Design
According to customer requirements, the manufacturer confirms the pressure class, size, material, temperature range, and applicable standards of the cryogenic globe valve.
At this stage, design engineers also determine the extended bonnet structure, sealing type, and suitable materials for low-temperature service, ensuring the valve can work safely under cryogenic conditions.
Step 2: Forging & Casting
The main pressure-bearing parts such as body, bonnet, and disc are produced by forging or casting, depending on the design and size of the cryogenic globe valve.
All raw materials must meet low-temperature mechanical property requirements, with strict control of chemical composition and internal soundness.
Step 3: Machining
After raw part inspection, machining is carried out for the body cavity, flange faces, stem hole, seat area, and bonnet connection.
For a cryogenic globe valve, machining accuracy is especially important to ensure reliable shut-off performance and dimensional stability in low-temperature service.
Step 4: Assembly
After all components pass inspection, the valve is assembled, including stem, disc, seat, gasket, bonnet, and handwheel.
During assembly of the cryogenic globe valve, special attention is given to sealing surfaces, stem alignment, and cleanliness, because any contamination may affect low-temperature performance.
Step 5: Testing & Quality Assurance
Each cryogenic globe valve undergoes pressure testing, seat leakage testing, and, when required, low-temperature performance testing.
Material certificates, dimensional inspection, NDE reports, and test records are checked to ensure the valve fully complies with project and international quality requirements.
Step 6: Painting and Finishing
After testing, the valve surface is cleaned, marked, and coated if required. Final finishing includes nameplate installation, flange protection, packaging, and shipment preparation.
For export products, special packing protection is often applied to prevent damage during transportation and storage.
Primarily used in transportation systems for cryogenic media such as liquefied natural gas, liquid oxygen, and liquid nitrogen, as well as in high-temperature, high-pressure piping systems at thermal power plants and nuclear power plants
These valves are widely used in:
Oil and Gas
Chemical Processing
Power Plants
Water Treatment
Metallurgy and Mining
Agriculture and Irrigation
Superior Quality
Our valves are manufactured using premium materials and undergo rigorous quality testing to ensure reliable performance in demanding industrial applications.
Advanced Technology
Equipped with state-of-the-art CNC machining centers and precision manufacturing equipment, we deliver valves with exceptional accuracy and consistency.
Competitive Pricing
Through optimized manufacturing processes and bulk material procurement, we offer high-quality valves at competitive prices without compromising on quality.
Expert Support
Our experienced technical team provides comprehensive support from product selection to after-sales service, ensuring optimal valve performance for your specific application.
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