Globe Valves

Globe valves are not recommended when resistance to flow and pressure drop is objectionable. Though, they are generally ideal for throttling and preferable when a valve gets operated frequently.

Globe Valve Products

Rising Stem, Metal Seated
Item Details
Bronze
Bronze
PN21
DN15-DN80
BSPF
Rising Stem, Metal Seated
Item Details
Cast Iron
Bronze
PN14
DN15-DN300
AS2129 Table E / ANSI
Epoxy Coating / Actuator
High Pressure, Rising Stem, Metal Seated
Item Details
Forged Steel
Stellite
PN62
DN15-DN50
AS2129 Table D,E,F,H,J&K /ANSI /DIN
Rising Stem, Metal Seated
Item Details
Bronze
Stainless Steel
PN40
DN10-DN80
BSPF
SDNR / NPTF
Rising Stem, Metal Seated
Item Details
Bronze
Stainless Steel
PN35
DN20-DN80
AS2129 Table E, F & H / ANSI
Rising Stem, Metal Seated
Item Details
Bronze, Carbon Steel (WCB)
Stainless Steel
PN35
DN15-DN300
AS2129 Table D, E, F & H / ANSI
Pintle guided plug
Controllable Lift Check Valve
Item Details
Bronze, Carbon Steel (WCB)
Stainless Steel
PN35
DN15-DN300
AS2129 Table D, E, F & H / ANSI
Rising Stem, Metal Seated
Item Details
Stainless Steel
Stainless Steel
PN10
DN15-DN50
BSPF
Epoxy coating / Actuator
Rising Stem, Metal Seated
Item Details
Carbon Steel (WCB)
Stellite / CR13
ANSI 150/300/600
DN15-DN600
ANSI RF
Drilling to suit AS2129 Table D, E, F & H /ANSI / DIN
Rising Stem, Metal Seated
Item Details
Forged Steel (A105)
Stellite
PN138 (ANSI 800)
DN15-DN50
ANSI RF
Drilling to suit Table D, E, F & H / ANSI / DIN
Introduction

Globe Valves by John Valves

In globe valves, the route taken by the flow is not straight but varies, leading to greater flow resistance and a more significant pressure drop than in other valve types. This contrasts gate valves, whose seating arrangement is perpendicular to the flow; in globe valves, it’s parallel. When the valve is opened, the disc and seat no longer make contact, allowing the flow to begin.

A notable feature of globe valves is their reduced disc travel distance. This design means fewer rotations are needed to operate the valve, which translates to time savings, reduced effort, and less wear on the valve components.

However, there might be better choices than globe valves in situations where flow resistance and pressure drop are critical concerns. Despite this, they are highly effective for throttling purposes and are preferred in scenarios where frequent valve operation is necessary.

Globe Valve Technical Sheets

Our commitment to industry to supply quality globe valves, we have made these technical sheets available. If you need further information or can’t find the sheet you need, please make a technical enquiry.

Gate Valves Data Sheets

Bronze Globe Valves

Designed for versatility, our bronze globe valves, featuring screwed bonnets and integral seats, are an economical choice for various general-purpose applications.

They provide throttling control and isolating flow, making them suitable for sectors like hospital services, canteen equipment, and agricultural instrumentation.

Durable construction allows for straightforward reconditioning of the seating faces after prolonged use.

Soft Seat Globe Valves

The John 101 and 102 models in our soft seat globe valve collection are distinguished by their union bonnets, renewable composition discs, and integral seats.

These valves are adept at handling isolation tasks in medium and low-pressure steam and hot water services.

They find widespread use in hospital equipment, canteen appliances, heating systems, and various industrial processes.

Stainless Steel Trim Globe Valves

Our collection of cast iron and carbon steel globe valves is characterised by a simple yet robust design tailored to meet a broad spectrum of industrial applications.

Their construction and functionality are designed to cater to diverse working conditions, offering a reliable solution for various industry needs.

Forged Carbon Steel Globe Valves

The John Fig 245, part of our forged carbon steel globe valve series, is engineered for high-pressure and high-temperature services.

These outside screw globe valves are equipped with stellite-faced valve discs and body seats as standard, ensuring durability and reliability under demanding operational conditions.

Manufacturing Valves

Excellence in the Design & Engineering

Excellence in the design and engineering of globe valves is pivotal in achieving optimal performance, durability, and reliability in various industrial applications. Key aspects include carefully selecting materials, such as bronze, stainless steel, or carbon steel, tailored to specific operational environments, ensuring resistance to corrosion, high temperatures, and pressure variations.

Advanced engineering techniques are employed to create ergonomic designs that facilitate more effortless operation and maintenance, with features like union bonnets and integral seats for improved sealing and flow control.

Additionally, the adaptability of globe valves to various modifications, like stellite-faced discs for high-temperature service, showcases the ingenuity and flexibility in their design. This commitment to excellence extends the valves’ lifespan. It ensures efficiency and safety in industries ranging from healthcare to heavy manufacturing, underlining the globe valve’s role as a cornerstone in modern fluid control technology.

Operation Mechanism

The operation mechanism of globe valves is a blend of precision engineering and practical design, crucial for effective fluid flow control in various applications. Central to this mechanism is the linear motion of the valve disc, moving perpendicularly to the fluid flow, enabling meticulous regulation of flow rate.

Integral components, such as the stem, disc, and seat, work in unison; the stem transmits the actuation force, while the interaction between the disc and seat controls fluid passage. Handwheels or actuators apply the necessary force for operation. Globe valves excel in throttling, offering fine control over the flow with a characteristic tortuous path that, while contributing to a higher pressure drop, ensures superior control.

Their design emphasises maintenance ease, allowing access to critical parts like the disc and seat for servicing without complete valve removal. Operational efficiency is further enhanced by reduced disc travel, necessitating fewer turns for valve actuation and minimising wear.

Globe Valve Function

Advantages of Globe Valves

  • Precise Flow Control
    One of the primary advantages of globe valves is their excellent ability to regulate flow. The design allows for fine valve opening adjustment, providing precise control over the flow rate.
  • Throttling Capability
    Globe valves are particularly effective for throttling purposes. Their design permits the gradual increase or decrease of flow, making them ideal for applications where the flow rate needs to be finely tuned.
  • Good Sealing Capability
    The seating arrangement of globe valves provides a tight seal when the valve is closed. This reduces the risk of leakage and enhances the system’s overall efficiency.
  • Shorter Stroke Length
    Compared to other valves, globe valves require a shorter distance to open or close entirely. This shorter stroke length results in quicker operation and reduced wear on the valve components.
  • Ease of Maintenance
    The internal parts of a globe valve, such as the seat and the disc, are generally easy to access for maintenance or replacement. This accessibility can reduce downtime and maintenance costs.
  • Durability
    Globe valves are designed to withstand high pressure, temperature variations, and frequent operation cycles. This durability makes them a reliable choice for many industrial applications.
  • Directional Flow
    Globe valves can flow in either direction, providing flexibility in piping design and system implementation.
  • Variety of Applications
    Their versatility makes globe valves suitable for various applications, from simple water lines to complex chemical processing plants.
  • Minimal Backflow
    When closed, globe valves prevent backflow effectively, which is crucial in many processing systems to maintain the integrity of the fluid flow.
  • Adaptability
    They can be designed and manufactured in various sizes and materials, making them adaptable to different mediums and operational conditions.

Industry Uses

Globe valves find extensive use across a diverse range of industries due to their reliability, precise control, and versatility. Here are some of the key industry applications:

Oil and Gas Industry​

Employed in pipelines and processing facilities for regulating the flow of oil, natural gas, and other petrochemical products.

Chemical Processing​

Utilised for controlling the flow of various chemicals, providing the necessary precision & safety required in handling hazardous materials.

Water and Wastewater Treatment​

In water systems, globe valves are prized for their ability to throttle flow, allowing for precise control of water flow rates.

Food and Beverage Manufacturing​

Used in various stages of food and beverage production for controlling the flow of liquids, steam, and other substances.

Pharmaceuticals

Employed in processing plants for precise control of liquids and gases, ensuring the quality and safety of pharmaceutical products.

Marine & Ship Building

Essential for controlling ballast, fuel, and water systems on ships and in maritime infrastructure.

Mining & Minerals

Used for controlling the flow of liquids and gases in mineral extraction and processing operations.

HVAC Systems​

Integral in regulating steam and hot water systems for heating and cooling purposes in commercial and residential buildings.

Agriculture and Irrigation

Used for controlling water flow in irrigation systems and in various agricultural processing applications.

Pulp and Paper Industry

Utilised for regulating the flow of chemicals, water, and slurries in the manufacturing of paper products.

Power Generation

Used in cooling systems, fuel delivery systems, and other critical areas in power plants, hydroelectric, and thermal power generation.

Steam

Employed extensively in steam distribution networks for effective regulation and isolation.

Latest Articles

Frequently Asked Valve Questions

If would like to know more, please get in touch and we’ll be happy to answer your questions.

A gate valve is used to control the flow of liquid, gas, or slurry in a pipeline. It is ideal for on/off control of the flow, rather than for flow regulation. Gate valves are commonly used in water and wastewater treatment, oil and gas pipelines, and in various industrial processes.

A gate valve operates by lifting a rectangular or round gate out of the path of the fluid. When the valve handle or actuator is turned, it moves the stem and the gate vertically, allowing or blocking the flow. In the open position, the gate is fully retracted, providing a full bore for the fluid to pass through with minimal resistance.

A gate valve is better suited for on/off control, providing a tight seal and minimal pressure drop when fully open. A ball valve, on the other hand, is good for both on/off and throttling services due to its spherical disc that can be partially or fully rotated to control the flow.

Generally, gate valves are not recommended for throttling purposes. Continuous operation in a partially open state can cause damage to the gate and seats due to the high velocity flow and turbulence.

Gate valves provide a minimal pressure drop when fully open, offer tight sealing when closed, have a relatively simple design, and are cost-effective, especially for larger sizes. They are also suitable for high-pressure and high-temperature applications.

Regular maintenance of a gate valve includes periodic inspection for leaks, checking the stem and screw mechanism for smooth operation, and ensuring that the valve seats and gate are free from damage or corrosion. Lubrication of moving parts and stem threads may be necessary, depending on the valve’s design and application.

Gate valves are made from a variety of materials, including cast iron, stainless steel, brass, bronze, and PVC, depending on their intended use. The choice of material depends on factors like the fluid type, pressure, temperature, and environmental conditions.

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