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What Are the Differences Between Flanged Globe Valves and Threaded Globe Valves?
What Are the Differences Between Flanged Globe Valves and Threaded Globe Valves?
2025-10-31

If you’ve ever hesitated between choosing a flanged or threaded globe valve, you’re not alone. Globe valves are common shut-off valves widely used in industries such as oil and gas, chemical processing, power generation, shipbuilding, and water treatment. While both connection types can control fluid flow, they differ significantly in terms of installation method, sealing performance, and suitable applications. This article will provide a systematic comparison of flanged and threaded globe valves from the perspectives of structure, performance, and application.   I. Fundamental Difference in Connection Methods   1.Flanged Globe Valve A flanged globe valve connects to the pipeline through flanges, with bolts tightening the flange faces together to ensure a secure seal.This connection type offers excellent strength and reliability, making it ideal for medium to high-pressure, large-diameter, and frequently operated systems.In industrial applications, typical sizes range from DN50 to DN300, and flange dimensions generally follow international standards such as ANSI, DIN, or JIS.   2. Threaded Globe ValveA threaded globe valve typically uses either internal (NPT/BSP) or external threads to connect to the pipeline, relying on the threads themselves for sealing.This compact and lightweight structure allows for easy installation and is mainly used in small-diameter (usually ≤ DN50) and low-pressure systems, including residential pipelines.Because it does not require welding or flange gaskets, a threaded valve is more cost-effective in both installation and maintenance.     II. Comparison of Sealing Performance and Maintenance   Flanged Globe ValveFlanged globe valves typically use metal or flexible graphite gaskets for sealing, offering excellent resistance to high temperature, high pressure, and corrosion.During long-term operation, maintenance or valve replacement is straightforward—simply loosen the flange bolts to disassemble the valve.   Threaded Globe ValveThe sealing of a threaded globe valve mainly depends on the thread engagement and sealing materials such as PTFE tape or sealing paste.However, repeated disassembly can damage the threads and increase the risk of leakage.For this reason, threaded globe valves are better suited for fixed installations, clean fluids, and low-pressure systems.     III. Structural Dimensions and Installation Requirements   Flanged Globe ValveFlanged globe valves are larger in size and require more installation space, but they provide superior vibration resistance and pressure tolerance.They are commonly used in industrial piping networks or pump station systems where sufficient structural support is available.   Threaded Globe ValveThreaded globe valves feature a compact design, making them ideal for confined spaces or lightweight piping systems such as laboratories, compressor inlets and outlets, and domestic water supply lines.However, thr...

Valve Market 2025: Smart Upgrades and Infrastructure Investment Drive Global Growth
Valve Market 2025: Smart Upgrades and Infrastructure Investment Drive Global Growth
2025-10-24

The global industrial valve market is undergoing a quiet yet significant transformation. Growth is no longer driven mainly by new construction projects — instead, it’s increasingly fueled by the replacement and modernization of aging equipment and infrastructure. From petrochemical plants to municipal water systems and natural gas pipelines, valve upgrades have become a key priority across industries.   Aging Equipment Drives Rising Valve Replacement Demand   In many industrial facilities, valves—though seemingly durable—gradually suffer from seal wear, sluggish operation, and leakage after years of service. For plants operating over a decade, valve degradation has become a major factor affecting safety and efficiency.   With stronger focus on maintenance, process safety, and energy efficiency, end users in oil & gas, power, and water treatment sectors are accelerating valve replacement and upgrade projects. This trend aligns with a global shift toward predictive maintenance and sustainable operations, increasing demand for ball valves, gate valves, and control valves.   Market research from Mordor Intelligence and others shows a shorter valve replacement cycle due to rising maintenance costs and downtime risks. Stricter environmental and safety standards are also pushing faster modernization worldwide. In the U.S., for example, the water sector—with pipelines averaging over 40 years old—is investing in large-scale valve renewal programs to reduce leakage and unplanned shutdowns. Similar initiatives are emerging across Europe and Asia.   Infrastructure Investment Fuels Market Expansion   Beyond replacements, ongoing infrastructure investment continues to drive valve demand globally. Asia’s rapid industrial growth and the Middle East’s refining and petrochemical expansion have led to increased valve procurement.   According to GMI Insights, the global industrial valve market reached USD 75.9 billion in 2024 and is projected to hit USD 142.6 billion by 2034 (CAGR: 6.6%). Precedence Research forecasts even higher potential—up to 12.5% CAGR.   This growth is backed by large-scale upgrades in urban water networks, wastewater treatment plants, natural gas pipelines, and energy transition projects such as hydrogen and carbon capture systems, all requiring next-generation high-performance valves.   Valve Replacement Becomes a Smart Technology Upgrade   Modern valves are evolving beyond mechanical parts. With smart manufacturing and the Industrial Internet of Things (IIoT), today’s valves feature sensors, smart actuators, and remote monitoring. Engineers can now track performance in real time and conduct predictive maintenance, reducing unexpected downtime.   Advanced materials like corrosion-resistant alloys, cryogenic steels, and special polymers are extending service life and reliability—especially in harsh environments. For indu...

Top 10 Chinese Valve Manufacturers Selected for 2025
Top 10 Chinese Valve Manufacturers Selected for 2025
2025-09-30

Based on publicly available industry data, company websites, and authoritative rankings in 2025, this article selects ten Chinese valve manufacturers that are representative in terms of technology, production capacity, qualifications, and market performance. The ranking emphasizes overall corporate capability and market influence, aiming to provide a reference for procurement and engineering selection.   Suzhou Neway Valve Co., Ltd. (Brand: NEWAY) Neway is one of the few domestic valve manufacturers capable of serving high-end applications such as deep-sea, LNG, and nuclear power. The company possesses comprehensive technology and international certifications, with outstanding production capacity and project support capabilities. It holds a significant share in large-scale projects and export markets, making it a representative of leading domestic valve enterprises.     DERVOS VALVE (Brand: DERVOS VALVE) DERVOSVALVE' s product line covers a full range of valves, including ball valves, butterfly valves, gate valves, globe valves, and check valves. The company holds comprehensive technology and international certifications, ensuring its products meet the requirements of various operating conditions and markets. With in-house manufacturing capabilities and first-class supply strength, DERVOS VALVE can offer customers excellent delivery speed and consistent quality assurance. The company supports orders starting from a single unit (MOQ≧1) and provides one-stop services from inquiry and quality inspection to final delivery.     Lianggu Valve Group Co., Ltd. (Brand: Lianggu) Lianggu specializes in forging, casting, and CNC machining, offering a comprehensive range of valve specifications across multiple manufacturing sites and its own casting and forging facilities. The company is well-suited for mid-to-high-end engineering projects and maintains stable clients and standardized capabilities in sectors such as nuclear power and petrochemicals.     CNNC Suzhou Valve Technology & Industrial Co., Ltd. (Brand: CNNC Su Valve) CNNC Su Valve originates from the state-owned system and has long been responsible for supplying valves for nuclear power and major engineering projects. Its qualifications and testing capabilities are among the industry' s leading standards. The company possesses irreplaceable engineering experience in high-integrity and specialty valves.     Suzhou Dawson Drilling & Production Equipment Co., Ltd. Founded in 2006, the company primarily manufactures oil and gas drilling and production equipment as well as valve products. Its products are widely used in the energy sector, including oil and natural gas. With strong R&D and manufacturing capabilities, Dawson maintains a stable position in both the drilling equipment and industrial valve markets.   Zhejiang KCM Valve Co., Ltd. (KCM Valve) KCM Valve has long focused on the research and manufacturing of marine valves. Its products ...

PSB Globe Valve BW 1500LB
加载中...

Pressure Sealed Bonnet Globe Valve 6 Inch 1500LB BW

  • Payment:

    30% T/T When Order, 70% T/T Before Shipment
  • Product Origin:

    China
  • Color:

    Customization
  • Shipping Port:

    Shanghai China
  • Lead Time:

    35~60 days Ex Works After Order Confirmation
  • Material:

    Carbon Steel Globe Valve, Cast Steel Globe Valve
  • Method of Operation:

    Gearbox Operation Globe Valve
Inquiry now
Product Detail
The 6 Inch PSB globe valve has 1500LB design pressure, butt weld end, and gearbox. The full bore globe valve is made of carbon steel WCB body and trim 5 material.

Quick Detail

Type

Globe Valve

Size

6''

Design Pressure

Class 1500

Construction

Pressure Seal Bonnet, Plug Type Disc, Rising Stem

Connection Type

Butt Weld

Operation Type

Bevel Gearbox Opearted

Design Code

BS 1873

End to End

ASME B16.10

Connection End

ASME B16.25

Pressure & Temperature

ASME B16.34

Test & Inspection Standard

API 598

Body Material

Cast Steel WCB

Trim Material

Trim NO. 5

Temperature Range

-29~+425

Application

WOG

Origin

China


Material & Dimension

High Pressure Globe Valve Manufacturers


NPS          DN Class 2 2 1/2 3 4 6 8
50 65 80 100 150 200
L(RF)    L1(BW) 900LB 368 419 381 457 610 737
1500LB 368 419 470 546 705 832
2500LB 451 508 578 673 917 1022
L2(RTJ) 900LB 371 422 384 460 613 740
1500LB 371 422 473 549 711 841
2500LB 454 514 584 683 927 1038
H(Opne) 900LB 550 605 678 798 930 1230
1500LB 550 605 866 956 1260 1263
2500LB 560 720 755 1230 1791 2086
W 900LB 350 350 400 450 458 610*
1500LB 400 400 450 560 610* 610*
2500LB 400 450 560 310* 610* 760
Weight   (RF) 900LB 78 108 102 142 400 960
1500LB 85 110 135 230 660 1590
2500LB 140 168 247 620 1500 3200
Weight   (BW) 900LB 66 91 87 128 355 868
1500LB 77 101 122 209 595 1440
2500LB 100 118 180 438 1148 2594
*Manual gear operator is recommended


No Part Name Carbon steel to ASTM Alloy steel to ASTM Stainless steel to ASTM
WCB WC6 WC9  C5 CF8 CF8M CF3 CF3M
1 Body A216 WCB A217 WC6 A217 WC9 A217 C5 A351 CF8 A351 CF8M A351 CF3 A351 CF3M
2 Seat Ring A105 A182 F11 A182 F22 A182 F5 A182 F304 A182 F316 A182 F304L A182 F316L
3 Disc A105 A182 F11 A182 F22 A182 F5 A182 F304 A182 F316 A182 F304L A182 F316L
4 Stem A182 F6 A182 F304 A182 F304 A182 F316 A182 F304L A182 F316L
5 Disc nut A182 F6 A182 F304 A182 F304 A182 F316 A182 F304L A182 F316L
6 Cap SS Spiral Wound graphite or SS Spiral Wound PTFE
7 Body Seal Flexible Graphite+316
8 Adjustment Gasket F6 F6 F316
9 Stem packing Flexible Graphite+316
10 Gland Nut A194 2H A194 8
11 Gland Eyebolt A193 B7 A193 B8
12 Pin Carbon steel or Stainless Steel
13 Cap Nut Carbon steel or Stainless Steel
14 Gland A182 F6 A182 F304 A182 F316 A182 F304L A182 F316L
15 Gland Flange A216 WCB A351 CF8
16 Yoke A216 WCB A351 CF8
17 Stem Nut A439 D2 or B148-952A
18 Screw Carbon steel
19 Handwheel Ductile Iron or carbon steel
20 Name Plate Stainless steel or Aluminum
21 Washer Carbon steel
22 Nut Carbon steel or Stainless Steel

Related Knowledge

Why do we use pressure seal bonnet?


Pressure sealed bonnet are often used for valves with high design pressure. The higher the internal pressure gets, the greater the sealing force beween body and bonnet become.


For bolted bonnet valves, the body and bonnet are joined by studs and nuts with a gasket between the flange faces to facilitate sealing. However,as system pressure increases,the potential for leakage through the body and bonnet increases.

But for pressure sealed valve, “bonnet take-up bolts” to pull the bonnet up and seal against the pressure seal gasket. That is why when pressure increase, the performance of pressure seal gasket between body and bonnet becomes better.


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    If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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