Trusted Globe Valve Manufacturer
NTVAL provides durable Globe Valves designed for large-scale projects, offering precise flow control and reliable performance in critical applications. With competitive pricing and timely delivery, we ensure your operations run smoothly. Trust NTVAL for dependable valve solutions.
Reliable Globe Value
Caractéristiques de la conception
- The impact handwheel is available either as a standard option provided by the manufacturer or can be supplied upon customer request.
- Gland eyebolts are designed to swing aside, which simplifies the maintenance of packing.
- Class 150 to 600 Valves: Equipped with male and female bonnet joints.
- Class 900 and Above Valves: Utilize ring joints.
- Class 600 Valves: Ring joints are available as an option upon customer request.
- The anti-blow-out stem design includes a conical back seat surface. This design allows the valve to be repacked while it is in the fully open position.
- The plug seat surface features a standard disc design. On request, alternative seating surfaces are available, including spherical, parabolic, or flat designs.
- The seat face features Stellite 6 as the standard material.
Contrôle de la qualité
The PMI test checks the material composition of the globe valve to confirm it matches the required standards for safety.
Test PMI
The sealing test verifies that the globe valve closes tightly, preventing any leaks under normal working conditions.
Test d'étanchéité
This test evaluates the globe valve’s ability to control emissions, making sure it meets the set environmental safety requirements.
Test de faibles émissions
The impact test determines how well the globe valve withstands sudden forces, helping to check its durability under stress.
Test d'impact
In this process, we measure the globe valve’s parts to verify they match the design specifications for proper fitting.
Inspection des dimensions
The painting thickness test confirms the globe valve’s coating is evenly applied, protecting it from corrosion and damage.
Test d'épaisseur de peinture
During the PT test, a liquid is applied to the valve’s surface to find any cracks or imperfections in the material.
PT
Material inspection involves analyzing the globe valve’s materials to verify they meet the required specifications for strength and performance.
Inspection des matériaux
Applications de nos vannes dans les industries clés
Découvrez comment nos solutions de pointe en matière de vannes améliorent le contrôle des flux, en renforçant l'efficacité, la sécurité et l'assurance qualité.
In the chemical processing industry, globe valves offer precise flow control, making them ideal for handling corrosive chemicals safely and effectively.
Traitement chimique
The globe valve’s strong design provides excellent control over high-pressure liquids, making it a reliable choice for petrochemical applications.
Pétrole chimique
In O.P.G. and nuclear sectors, globe valves ensure safe operation, offering controlled flow for critical systems under strict conditions.
G.P.O. et nucléaire
Globe valves regulate the flow of liquids in pulp production, helping maintain efficient processing and reducing potential downtime.
Pâte à papier
The mining industry benefits from globe valves’ ability to handle abrasive fluids, ensuring steady operation in harsh environments.
Exploitation minière
Globe valves control water flow in the water and sewage industry, offering reliable solutions for managing water treatment and distribution.
Eau et assainissement
In steam systems, globe valves provide accurate regulation of steam flow, improving overall system efficiency and performance.
Système de vapeur
Globe valves are perfect for boiling systems, allowing controlled steam and water flow, which enhances temperature regulation and safety.
Système d'ébullition
Obtenir un robinet plus polyvalent
Dimension et poids
Classe 150
AP1 623 Design,
Bolted Bonnet,OS&Y,
Screwed-in Back seat,
Rising Stem and Handwheel,
Disque pivotant
Figure NO.
GL1R,C00/NO.8
GL1B,C00/NO.8
| NPS | en | 2" | 2-1/2" | 3" | 4" | 5” | 6" | 8" | 10" | 12" | 14" | 16" | 18" | 20" | 24" |
| DN | mm | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 |
L-L1 (RF-BW) | en | 8 | 8.5 | 9.5 | 11.5 | 14 | 16 | 19.5 | 24.5 | 27.5 | 31 | 36 | 38.5 | 38.5 | 51 |
| mm | 203 | 216 | 241 | 292 | 356 | 406 | 495 | 622 | 699 | 787 | 914 | 978 | 978 | 1295 | |
| W | en | 8 | 10 | 10 | 12 | 14 | 14 | 16 | 20 | 20 | 22 | 26 | 24 | 24 | 31.9 |
| mm | 200 | 250 | 250 | 300 | 350 | 350 | 400 | 500 | 500 | 560 | 650 | 610 | 610 | 810 | |
| H | en | 13.3 | 14.7 | 15.6 | 18.7 | 19.6 | 20.6 | 23.1 | 29.1 | 33.9 | 37.4 | 39.2 | 44.9 | 49.7 | 60 |
| mm | 338 | 373 | 396 | 476 | 497 | 524 | 588 | 738 | 862 | 950 | 994 | 1140 | 1262 | 1524 | |
| WT(RF) | KG | 21 | 29 | 35 | 58 | 78 | 104 | 162 | 289 | 485 | 550 | 724 | 1400 | 2600 | 3700 |
| WT(BW) | KG | 17 | 20 | 30 | 47 | 71 | 86 | 138 | 219 | 362 | 491 | 650 | 1250 | 2300 | 3250 |
Classe 300
API623 Design,
Bolted Bonnet,OS&Y,
Screwed-in Back seat,
Rising Stem and Handwheel,
Disque pivotant
Figure NO. :
GL3R,C00/NO.8
GL3B,C00/NO.8
| NPS | en | 2" | 2-1/2" | 3" | 4" | 5” | 6" | 8" | 10" | 12" | 14" | 16" | 18" | 20" |
| DN | mm | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 |
L-L1 (RF-BW) | en | 10.5 | 11.5 | 12.5 | 14 | 15.75 | 17.5 | 22 | 24.5 | 28 | 33 | 34 | 38.5 | 40 |
| mm | 267 | 292 | 318 | 356 | 400 | 445 | 559 | 622 | 711 | 838 | 864 | 978 | 1016 | |
| W | en | 8 | 10 | 10 | 14 | 18 | 20 | 22 | 24 | 26 | 24 | 24 | 38.5 | 40 |
| mm | 200 | 250 | 250 | 350 | 450 | 500 | 560 | 600 | 650 | 610 | 610 | 610 | 810 | |
| H | en | 13.9 | 15.3 | 16.6 | 19.5 | 22.7 | 26.6 | 35.9 | 37.4 | 40.6 | 44.5 | 51.6 | 57.5 | 64.3 |
| mm | 353.5 | 388.5 | 420.5 | 495.5 | 576.5 | 674.5 | 911.5 | 949 | 1032 | 1130 | 1310 | 1460 | 1632 | |
| WT(RF) | KG | 26 | 38 | 51 | 76 | 125 | 173 | 297 | 500 | 724 | 1125 | 1650 | 2700 | 3650 |
| WT(BW) | KG | 21 | 29 | 38 | 59 | 104 | 137 | 237 | 432 | 632 | 975 | 1450 | 2400 | 3200 |
Classe 600
API623 Design,
Bolted Bonnet,OS&Y,
Screwed-in Back seat,
Rising Stem and Handwheel,
Disque pivotant
Figure NO. :
GL3R,C00/NO.8
GL3B,C00/NO.8
| NPS | en | 2" | 2-1/2" | 3" | 4" | 5” | 6" | 8" | 10" | 12" | 14" | 16" | 18" |
| DN | mm | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 |
L-L1 (RF-BW) | en | 11.5 | 13 | 14 | 17 | 20 | 22 | 26 | 31 | 33 | 35 | 39 | 43 |
| mm | 292 | 330 | 356 | 432 | 508 | 559 | 660 | 787 | 838 | 889 | 991 | 1092 | |
| L2 (RTJ) | en | 11.62 | 13.12 | 14.12 | 17.12 | 20.12 | 22.12 | 26.12 | 31.12 | 33.12 | 35.12 | 39.12 | 43.1 |
| mm | 295 | 333 | 359 | 435 | 511 | 562 | 663 | 790 | 841 | 892 | 994 | 1095 | |
| W | en | 10 | 10 | 14 | 18 | 20 | 22 | 24 | 28 | 24 | 24 | 30 | 32 |
| mm | 250 | 250 | 350 | 450 | 500 | 560 | 600 | 700 | 610 | 610 | 762 | 810 | |
| H | en | 15.6 | 17.6 | 19.5 | 23.6 | 27.6 | 31.1 | 39.9 | 46.5 | 55 | 57.1 | 63.4 | 70.9 |
| mm | 396.5 | 446 | 495.5 | 599 | 700 | 791 | 1014 | 1180 | 1397 | 1450 | 1610 | 1801 | |
| WT(RF) | KG | 37 | 50 | 62 | 150 | 187 | 294 | 543 | 1006 | 1350 | 1620 | 2160 | 3300 |
| WT(BW) | KG | 30 | 40 | 58 | 132 | 142 | 227 | 460 | 729 | 1060 | 1330 | 1750 | 2800 |
Classe 900
API623 Design,
Bolted Bonnet,OS&Y,
Screwed-in Back seat,
Rising Stem and Handwheel,
Disque pivotant
Figure NO. :
GL3R,C00/NO.8
GL3B,C00/NO.8
| NPS | en | 2" | 2-1/2" | 3" | 4" | 6" | 8" | 10" | 12" | 14" | 16" |
| DN | mm | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 |
L-L1 (RF-BW) | en | 14.5 | 16.5 | 15 | 18 | 24 | 29 | 33 | 38 | 40.5 | 44.5 |
| mm | 368 | 419 | 381 | 457 | 610 | 737 | 838 | 965 | 1029 | 1130 | |
| L2 (RTJ) | en | 14.62 | 16.62 | 15.12 | 18.12 | 24.12 | 29.12 | 33.1 | 38.1 | 40.9 | 44.9 |
| mm | 371 | 422 | 384 | 460 | 613 | 740 | 841 | 968 | 1038 | 1140 | |
| W | en | 14 | 14 | 18 | 20 | 24 | 24 | 24 | 31.9 | 31.9 | 31.9 |
| mm | 350 | 350 | 450 | 500 | 610 | 610 | 610 | 810 | 810 | 810 | |
| H | en | 23.2 | 26 | 27.5 | 31.3 | 43.6 | 46.6 | 58.2 | 69.1 | 76.1 | 87 |
| mm | 590 | 660 | 699 | 795 | 1108 | 1184 | 1479 | 1755 | 1934 | 2210 | |
| WT(RF) | KG | 95 | 138 | 110 | 197 | 435 | 720 | 1070 | 1920 | 2670 | 3520 |
| WT(BW) | KG | 75 | 85 | 112 | 158 | 360 | 597 | 890 | 1690 | 2390 | 3170 |
Classe 1500
API623 Design,
Bolted Bonnet,OS&Y,
Screwed-in Back seat,
Rising Stem and Handwheel,
Disque pivotant
Figure NO. :
GL3R,C00/NO.8
GL3B,C00/NO.8
| NPS | en | 2" | 2-1/2" | 3" | 4" | 6" | 8" | 10" | 12" |
| DN | mm | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 |
L-L1 (RF-BW) | en | 14.5 | 16.5 | 18.5 | 21.5 | 27.75 | 32.75 | 39 | 44.5 |
| mm | 368 | 419 | 470 | 546 | 705 | 832 | 991 | 1130 | |
| L2 (RTJ) | en | 14.62 | 16.62 | 18.62 | 21.62 | 28 | 33.13 | 39.4 | 45.1 |
| mm | 371 | 422 | 473 | 549 | 711 | 842 | 1000 | 1146 | |
| W | en | 14 | 14 | 20 | 22 | 24 | 24 | 31.9 | 31.9 |
| mm | 350 | 350 | 500 | 560 | 610 | 610 | 810 | 810 | |
| H | en | 21.7 | 22.5 | 22.9 | 31.3 | 50.3 | 77.2 | 96.5 | 114.3 |
| mm | 550 | 572 | 582 | 795 | 1278 | 1960 | 2450 | 2904 | |
| WT(RF) | KG | 85 | 138 | 215 | 350 | 560 | 990 | 1530 | 2570 |
| WT(BW) | KG | 75 | 112 | 129 | 299 | 462 | 830 | 1330 | 2270 |
Classe 2500
API623 Design,
Bolted Bonnet,OS&Y,
Screwed-in Back seat,
Rising Stem and Handwheel,
Disque pivotant
Figure NO. :
GL3R,C00/NO.8
GL3B,C00/NO.8
| NPS | en | 2" | 2-1/2" | 3" | 4" | 6" | 8" | 10" |
| DN | mm | 50 | 65 | 80 | 100 | 150 | 200 | 250 |
L-L1 (RF-BW) | en | 17.75 | 20 | 22.75 | 26.5 | 36 | 40.25 | 50 |
| mm | 451 | 508 | 578 | 673 | 914 | 1022 | 1270 | |
| L2 (RTJ) | en | 17.88 | 20.25 | 23 | 26.88 | 36.5 | 40.88 | 50.9 |
| mm | 454 | 514 | 584 | 683 | 927 | 1038 | 1292 | |
| W | en | 16 | 20 | 22 | 24 | 24 | 24 | 31.9 |
| mm | 400 | 500 | 560 | 610 | 610 | 610 | 810 | |
| H | en | 28.3 | 31.5 | 34.8 | 49.6 | 75 | 97 | 122.4 |
| mm | 720 | 800 | 885 | 1260 | 1905 | 2465 | 3108 | |
| WT(RF) | KG | 176 | 264 | 308 | 759 | 1990 | 4390 | 5290 |
| WT(BW) | KG | 141 | 214 | 238 | 644 | 1700 | 3950 | 4390 |
Globe Valve Types based on the bore pattern
Straight Through/TEE Pattern/Z-Body Globe Valve
The T Pattern Globe valve features a medium inlet and outlet flow path oriented 180° in the same direction. This design results in a low flow coefficient and minimal pressure drop. The valve operates by using the valve stem to guide the valve disc to the sealing surface of the valve seat, effectively shutting off the flow.
During the opening and closing processes, the friction between the sealing surfaces is minimal, which reduces wear and tear. The throttling height is kept to a minimum, which optimizes process performance.
Compared to gate valves, the globe valve has a simpler structure, making it easier to maintain. Its straightforward design contributes to its widespread use in the industry.
Robinet à soupape de type Y
The Y-type globe valve features valve stems and flow paths set at an angle relative to the sealing surface of the valve seat and the inlet and outlet flow paths. The valve body can be either an integral or split design. The split body type uses two valve bodies that enclose the valve seat, making maintenance easier.
This type of globe valve does not alter the direction of the flow and offers the smallest flow resistance among globe valves. The sealing surface of both the valve seat and disc can be welded with hard alloy to resist erosion and corrosion. This design is particularly suited for alumina production pipelines and pipelines carrying slurry medium.
Robinet à soupape d'équerre
The main advantage of the angle globe valve is its ability to be installed at a right angle within the pipeline system. This design eliminates the need for 90° elbows, simplifying installation and operation.
As a result, the angle globe valve is particularly well-suited for synthetic ammonia production systems and refrigeration systems in chemical fertilizer plants.
Other Globe Valve Types
Bellow Globe Valve
The bellow globe valve, also known as the bellow seal globe valve, is designed with automatic roll welding to create a metal barrier between the fluid medium and the atmosphere. This design prevents leakage from the valve stem.
The valve features a bellows structure, with the lower end of the stainless-steel bellows welded to the valve stem to protect it from corrosion. The other end of the bellows is installed between the valve body and bonnet to form a static seal.
A double seal design is used, where stem packing serves as a secondary seal if the bellows fail. The welded bellows maintain stable operation and prevent stem vibration caused by valve plug movement. This valve is suitable for media requiring vacuum conditions, such as steam, flammable substances, explosive materials, thermal oil, high-purity fluids, and toxic substances.
Plunger Globe Valve
The Plunger Globe Valve uses a radial seal achieved with two spring-loaded sealing rings on a polished plunger. These rings are separated by a collar, and load is applied via connecting bolts between the valve body and bonnet. This setup presses the sealing rings firmly around the plunger to create a tight seal.
The valve features a body made of carbon steel, a plunger of Cr13 stainless steel, and flexible graphite sealing rings, suitable for water, steam, and oil pipelines. For applications involving acid and alkali corrosive media, the body and plunger can be made of stainless acid-resistant steel with a PTFE seal ring.
The Plunger Globe Valve offers reliable sealing, a long lifespan, and easy maintenance. However, it has a slower open/close speed. It is commonly used in urban construction systems and water and steam pipelines in urban heating systems.
Needle Globe Valve
The needle-type globe valve is designed for precise flow control. It features an integrated valve disc and stem, along with a high-precision needle-shaped probe that matches with the valve seat. The stem thread pitch of this valve is smaller compared to standard globe valves.
Typically, the seat hole size of the needle globe valve is smaller than the pipe size, making it suitable for pipelines with a small nominal diameter. It is mainly used as a sampling valve.
Three-Way Globe Valve
The three-way globe valve body features three flow paths and can also be designed with four paths. It can replace three-way joints and three ordinary globe valves in pipelines to divert, bypass, or combine flow.
This valve offers high-performance sealing, which extends its lifespan and prevents leakage. As a result, it helps reduce maintenance costs.
Construction of a Globe Valve and Working Principles
Components of the Globe Valve
The globe valve is comprised of several key components: the valve body, valve disc or plug, bonnet, and stem. The opening and closing mechanism features a plug-shaped disc, with a sealing surface that may be either flat or tapered. The disc moves linearly along the fluid’s center line during operation.
Types of Stem Operations
There are two types of stem operations for the globe valve. The first is the lift type, where the stem moves up and down with a handwheel that remains in place. The second type combines rotation and lifting, where both the handwheel and the valve rod rotate and move up and down together, with a lock nut positioned on the valve body.
Operational Limitations and Sealing
The globe valve is made for fully open or fully closed use and is not good for controlling flow. It needs pressure on the disc to create a tight seal. If closing takes more force than opening, the stem may need to be thicker to avoid bending or damage.
Pressure Seal Globe Valve
The pressure seal globe valve allows the medium to flow from above the valve disc, reducing the force needed to close it but increasing the force to open it. This design allows a smaller stem and helps create a tighter seal, improving performance compared to regular globe valves.
Performance and Application of Globe Valve
A. Advantages of Globe Valve
- Globe valves have a shorter stroke compared to gate valves.
- Good shutoff capability is provided, with less friction between sealing surfaces, leading to a longer lifespan.
- Moderate to good throttling capability is available.
- Options include T type, Y type, and angle patterns, each with distinct advantages.
- As a stop-check valve, the globe valve can operate when the disc is not attached to the stem.
B. Disadvantages of Globe Valve
- Globe valves are longer in size and experience a higher pressure drop compared to gate valves.
- Their structure is complex, making them challenging to manufacture and maintain.
- Greater force or a larger actuator is required to open or close the valve due to the pressure under the seat.
- Globe valves are generally unsuitable for media with particles, high viscosity, or tendencies to coke.
Selection Guide of Globe Valve
- Globe valves are suitable for pipelines or devices handling high-temperature and high-pressure media, such as in thermal power plants, nuclear power plants, and high-temperature, high-pressure pipelines in petrochemical systems.
- They are appropriate for pipelines where flow resistance and pressure loss are not concerns.
- Small-size globe valves can replace needle valves, instrument valves, sampling valves, and pressure gauge valves.
- They are suitable when regulating precision is not a critical requirement and the nominal diameter is less than 50mm.
- For small and large chemical fertilizers in the synthetic industry, high-pressure angle globe valves or high-pressure angle throttle valves with a nominal pressure of 1500 LB or 2500 LB should be used.
- In desiliconization workshops using the alumina Bayer method and pipelines prone to coking, T-type globe valves or T-type throttle valves with a split body and welded hard alloy seat are recommended.
- For water supply and heating systems in urban construction, globe valves, balance valves, or plunger globe valves can be selected for pipelines with a nominal passage less than 150mm.
Globe Valve Application
- Globe valves are commonly used in pipelines requiring full opening and closing, especially steam pipelines.
- Connection options for globe valves include weld-type or flange-type.
Installation and Use of Globe Valve
- Globe valves operated by handwheels can be installed in any position within the pipeline.
- Lifting mechanisms are not permitted for handwheel and actuated valves.
- The flow direction of the medium must align with the direction of the arrow on the valve body.
Common Problems and Maintenance of Globe Valve
A. The valve is passing
- Inspect for solid particles such as debris or steam scale in the medium that may have worn the valve disc or valve seat.
- Solid particles could be trapped between the valve disc and the valve seat.
- Check if the valve stem and the valve disc are not properly connected, which may prevent the valve disc from making tight contact with the valve seat.
- Look for corrosion on the stem or stem nut, among other parts.
B. The valve is not functioning/can not be opened or closed
- Check for debris between the valve stem and the valve stem nut or verify if the contact is poor.
- Confirm if the valve stem and the valve disc are detached.
- Inspect for corrosion on the valve stem and the valve stem nut.
- Assess if the valve disc is exposed to excessive reverse pressure or if the packing is too tight.
C. Partial leakage of packing
The primary issue with globe valves is often the loss of packing filler or damage to the filler foil structure. During operation, consider the following points:
- Use in Appropriate Pipelines:
- Globe valves should not be used in liquid pipelines prone to deposits or crystals.
- For steam, compressed air, vacuum pipelines, or liquid pipelines requiring flow regulation, install a filter before the valve to keep the medium clean.
- Handling Valve Closure:
- If the valve disc is blocked during closing, do not force it shut. Instead, attempt to flush out debris by opening and closing the valve rapidly several times.
- If this fails, dismantle and overhaul the valve.
- Lubrication and Cleaning: Regularly lubricate the stem and stem nut, and clean away debris, especially in water and steam valves, to prevent rust and valve failure.
- Maintenance of Seals and Packing: Replace any loose gaskets or packing promptly to avoid damage to the valve disc, valve seat, or joints, particularly under high-speed media like steam or compressed air.
- Dehydration Valve Care: Close the steam pipeline’s dehydration valve to prevent freezing and cracking. Keep the valve’s connection to the pipeline as short as possible.
- Flow Path and Installation:
- The globe valve adjusts the flow path clearance by lifting and lowering the disc. The flow paths within the valve are not aligned along the same horizontal center.
- During installation, pay attention to the direction of the arrow on the valve body, indicating that the flow direction should be low in and high out.
- If the flow comes from above the valve disc, it will subject the disc to reverse pressure, making the valve difficult to open.
- Valve Configuration for Specific Applications:
- For low-pressure, small-diameter, and short-distance pipelines, it may be necessary to use two consecutive globe valves.
- One valve should be installed in the correct orientation, while the other is installed in reverse. This configuration facilitates easier replacement of the valve packing.
- Replacing Valve Packing: Release pressure via the outlet before replacing valve packing. Loosening the gland flange under pressure can cause severe injury.
- Operation of Non-Rising Valves: For non-rising globe valves, leave the handwheel half a turn open when fully open to prevent accidental operation and damage from excessive force.
- Avoiding Water Hammer: Operate the valve similarly to other valves, avoiding rapid opening and closing to prevent water hammer in the pipeline.
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Specs of Globe Valve
Spécifications des matériaux
Globe Valves are made from different materials like carbon steel, stainless steel, and alloy steel. Each material has its strengths, such as resisting rust or handling heavy use. Stainless steel is often used in places with harsh chemicals because it doesn’t rust easily. NTVAL uses top-quality materials that last a long time, even in tough conditions.
Spécifications de conception
A typical Globe Valve has a bolted top, an outside screw and yoke (OS&Y), and a stem that rises when the valve is opened. These features make the valve easy to use and maintain. The rising stem shows if the valve is open or closed, which is important for controlling the flow of liquids or gases. And you know what? This design helps the valve work smoothly, even when under high pressure.
Size and Dimension Specifications
Globe Valves come in different sizes to fit various pipe systems. The sizes usually range from 2 inches to 24 inches in diameter. For example, a 6-inch Globe Valve might be about 17.5 inches long, 26.6 inches tall, and weigh around 173 kilograms. Knowing these dimensions is important to make sure the valve fits and works correctly in the system.
Pression et température nominales
Globe Valves are built to handle different levels of pressure, from Class 150 to Class 2500. The pressure rating tells you how much pressure the valve can safely hold. These valves can also work in a wide range of temperatures, depending on the material. Valves made from alloy steel can handle very high temperatures, making them good for hot steam systems.
Features of Globe Valve
Gland Eyebolts
Gland eyebolts are used to hold the packing in place within the valve, which helps prevent leaks. These eyebolts are designed to swing aside, making it easy to maintain and replace the packing. This feature guarantees that the valve remains sealed and operational, even after multiple uses.
Male and Female Bonnet Joints
Male and female bonnet joints create a tight, secure connection between the valve body and the bonnet. This joint design is especially important for high-pressure applications because it helps prevent leaks at the connection points. The secure fit of these joints contributes to the overall reliability and safety of the valve.
Plug Seat
The plug seat design in a Globe Valve offers a tight shutoff, which is crucial for controlling the flow of fluids or gases. This seat is usually made from durable materials that can withstand wear and tear over time. The precise fit of the plug seat also helps minimize any potential leaks, making it a key feature for maintaining flow control.
Benefits of Globe Valve
Contrôle précis du débit
NTVAL's Globe Valves are known for their ability to precisely control the flow of liquids and gases. The design of the valve allows for fine adjustments, which is important in processes where exact flow rates are needed. This precision makes Globe Valves ideal for applications in industries like oil and gas. Astonishing, isn’t it?
Durabilité
Globe Valves are built to last, with materials and designs that can handle harsh conditions. Whether dealing with high pressure, extreme temperatures, or corrosive substances, Globe Valves are made to perform over the long term. This durability reduces the need for frequent replacements, saving time and money.
Sécurité
Safety is a major benefit of using Globe Valves. The tight seal provided by features like the plug seat helps prevent leaks, which can be critical in hazardous environments. This reliability certifies that the valve operates safely under various conditions, protecting both the equipment and the people working with it.
Applications of Globe Valve
Pétrole et gaz
Globe Valves are commonly used in the oil and gas industry to control the flow of crude oil, natural gas, and other fluids. Their ability to provide precise flow control makes them essential in managing the pressure and flow rates within pipelines. But wait, there’s more! These valves are also valued for their durability, which is crucial in handling the harsh environments often found in oil and gas operations.
Production d'électricité
Globe Valves play a key role in the power generation industry, particularly in controlling the flow of steam and water in power plants. NTVAL’s Globe Valves help manage the high pressures and temperatures found in steam systems. Their ability to handle such conditions makes them an essential component in maintaining the safety and efficiency of power generation facilities.
Traitement chimique
In the chemical processing industry, Globe Valves are used to regulate the flow of various chemicals and fluids. Their tight shutoff capabilities are important for preventing leaks of hazardous substances. Additionally, Globe Valves can withstand the corrosive nature of many chemicals, making them a reliable choice in this industry.
Pâtes et papiers
In the pulp and paper industry, Globe Valves help control the flow of pulp, water, and chemicals during the production process. Their ability to handle both thick fluids and corrosive chemicals makes them a reliable choice. These valves help manage the flow efficiently, ensuring that materials move through the system without clogging or damage.
3 Considerations When Buying Globe Valve
01
Conception du chapeau boulonné
The bolted bonnet design is important when buying a Globe Valve because it provides a secure seal between the valve body and the bonnet. This design makes it easy to disassemble for maintenance and helps prevent leaks, making it reliable for high-pressure applications. Here’s the bottom line: if the system needs a valve that’s easy to maintain and offers a tight seal, a bolted bonnet design is a smart choice.
02
Class 2500 Pressure Rating
For applications that involve high pressure, a Class 2500 Globe Valve is often necessary. This pressure rating means the valve can withstand pressures up to 2500 psi. This makes it suitable for demanding environments where safety and reliability are critical. NTVAL offers Globe Valves with Class 2500 ratings, allowing the system to operate under high pressure without compromising performance.
03
Mechanical Actuator Handwheel
A mechanical handwheel in a Globe Valve is used to manually open or close the Globe Valve. This feature gives the operator precise control over the flow, allowing them to make adjustments as needed. For example, in situations where they need to carefully control the flow of fluid, a mechanical handwheel lets them do that easily. It’s a simple but effective tool that guarantees direct control over the valve’s operation.
Types of Globe Valve
An Angle Globe Valve is designed with an inlet and outlet at a 90-degree angle, which helps manage the flow direction without needing additional piping. This type of valve is commonly used in applications where space is limited, or where a change in flow direction is required. It’s a popular choice in the oil and gas industry due to its efficient flow control and durability.
The Bellow Seal Globe Valve is equipped with a bellows system to provide a tight seal, preventing any leakage of hazardous fluids. This type of valve is often used in applications where safety is a top priority, such as in chemical processing plants or refineries. The bellows design guarantees that no fluids escape, even under high pressure, making it a reliable choice for critical processes.
A Pressure Seal Globe Valve is designed to handle very high pressures. It has a special seal that gets tighter as the pressure inside the valve increases. This design is often used in power plants and other heavy-duty industries where safety is a top priority. The valve’s ability to seal more effectively under pressure makes it a reliable choice for high-pressure applications.
The Flanged Globe Valve features flanges on both ends, making it easier to connect to piping systems. These valves are ideal for high-pressure applications because the flanged connections provide a secure, leak-tight seal. NTVAL’s flanged Globe Valves are built to handle rigorous demands, offering reliable performance in critical operations.
Robinet à soupape d'équerre
Robinet à soupape à soufflet d'étanchéité
Pressure Seal Globe Valve
Robinet à soupape à brides
The Y Pattern Globe Valve is shaped like the letter “Y,” which helps reduce pressure drop across the valve. This design allows for smoother flow, making it more efficient than traditional Globe Valves. It’s often used in systems where maintaining flow efficiency is important, such as in steam or water applications. The Y pattern helps keep the flow steady while still offering good control.
A Stainless Steel Globe Valve is made from stainless steel, which is known for its strength and resistance to rust and corrosion. This type of valve is commonly used in industries that deal with harsh chemicals or high temperatures. Because stainless steel is durable and long-lasting, these valves are ideal for environments where other materials might fail.
Cryogenic Globe Valves are specially designed for use in extremely low temperatures, such as in the handling of liquefied natural gas (LNG) or other cryogenic fluids. These valves are built to prevent leakage and maintain performance even in freezing conditions. Here’s the thing: these valves are essential in chemical plants where temperatures can drop significantly.
Socket Weld Globe Valves are designed for secure, leak-proof connections in piping systems. They are welded directly into the pipes, which makes them strong and able to handle high pressure and temperature. This type of valve is often used in high-pressure systems where a strong connection is needed. The welded joints help prevent leaks, making the system more reliable.
Y Pattern Globe Valve
Robinet à soupape en acier inoxydable
Robinet à soupape cryogénique
Robinet à soupape à souder par emboîtement
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Globe Valve Materials and Connections:
- Robinet à soupape en acier inoxydable
- Robinet à soupape à brides
- Robinet à soupape à souder par emboîtement
Specialized Globe Valves:
- Robinet à soupape d'équerre
- Robinet à soupape à soufflet d'étanchéité
- Robinet à soupape de type Y
- Robinet à soupape cryogénique
Nous avons dressé pour vous une liste d'articles recommandés qui vous permettront d'approfondir vos connaissances :
- 8 Different Types of Globe Valve
- Tout sur le robinet à soupape pour application vapeur
- Top 9 Globe Valve Manufacturers
- 9 Objectif des robinets à soupape
- Avantages et inconvénients de l'utilisation des robinets à soupape
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