GLOBE VALVES — Technical Overview & Selection Guide

Overview

Globe valves are linear-motion valves designed primarily for flow regulation, throttling, and isolation in piping systems. They control flow by moving a disc against or away from a stationary seat, allowing accurate adjustment of fluid flow.

Globe valves are widely used where reliable throttling, flow control, and shut-off performance are required. Their design can be selected according to pressure, temperature, fluid characteristics, flow rate, and application requirements.

Key Features

• Suitable for flow regulation, throttling, and isolation

• Precise and reliable flow control

• Good shut-off capability

• Suitable for liquid, gas, steam, and process services

• Available for high-pressure and high-temperature applications

• Available in straight, angle, and special configurations

• Rising stem design for clear indication of valve position

• Flanged and butt-weld end connections available

• Manual, gear-operated, pneumatic, electric, or hydraulic operation options

• Available in ASME Class 150–2500, as applicable

Common Globe Valve Types

• Straight Pattern Globe Valve

• Angle Pattern Globe Valve

• Y-Pattern Globe Valve

• Forged Globe Valve

• Cast Globe Valve

• Bellows Seal Globe Valve

• Needle-Type Globe Valve

• Control Globe Valve

Technical Selection Parameters

Selection should consider:

Materials

Common body materials include:

• Carbon Steel

• Stainless Steel

• Alloy Steel

• Cast Iron

• Forged Steel, where applicable

Disc, stem, trim, and seat materials should be selected based on fluid compatibility, pressure, temperature, erosion, corrosion, velocity, and service requirements.

Trim & Seat

Typical trim and seat configurations may include:

• Stainless Steel Trim

• Alloy Trim

• Hardened Trim

• Metal-to-Metal Seats

• Stellite® or equivalent hard-facing, where specified

• Specialized trim for erosive or corrosive services

Trim and seat selection depends on process fluid, operating temperature, pressure, flow velocity, corrosion resistance, erosion resistance, and required service life.

End Connections

• Flanged

• Butt-Weld

• Threaded, where applicable

• Socket-Weld, where applicable

Operation

Globe valves may be operated using:

• Handwheel

• Gear Operator

• Pneumatic Actuator

• Electric Actuator

• Hydraulic Actuator, where applicable

Actuation should be selected based on valve size, operating pressure, required control accuracy, operating frequency, accessibility, and automation requirements.

Testing & Inspection

Depending on project specifications and applicable standards, globe valves may undergo:

• Shell/body pressure testing

• Seat leakage testing

• Backseat testing, where applicable

• Dimensional inspection

• PMI (Positive Material Identification)

• MTC verification

• NDE (Non-Destructive Examination)

• Visual and surface inspection

• Functional/operational testing

Quick Selection Guide

Flow Control: Determine whether the valve is required for throttling, regulation, isolation, or a combination of these functions.

Fluid: Identify whether the service is liquid, gas, steam, or another process fluid.

Size: Specify DN/NPS based on piping size, flow rate, and required control capacity.

Pressure: Provide operating and design pressure together with the applicable ASME pressure class.

Temperature: Specify operating and design temperature.

Valve Pattern: Select straight, angle, or Y-pattern according to piping arrangement, pressure drop, and service requirements.

Material: Select body, disc, stem, trim, and seat materials based on process conditions.

Flow Direction: Confirm the required flow direction according to the selected globe valve design and manufacturer requirements.

Pressure Drop: Evaluate allowable pressure loss, particularly where the valve will operate frequently in throttling service.

Operation: Specify manual, gear-operated, pneumatic, electric, hydraulic, or other actuation requirements.

Installation: Confirm installation orientation and accessibility for operation and maintenance.

Shut-Off: Define the required seat leakage and isolation performance.

Connection: Specify flanged, butt-weld, threaded, or socket-weld connection as applicable.

Applications

Globe valves are commonly used in:

• Oil & Gas

• Refineries

• Petrochemical Plants

• Chemical Plants

• Power Plants

• Steam Systems

• Boiler Systems

• Water Treatment

• Process Piping

• Pumping Systems

• Heating & Cooling Systems

• Flow Regulation Lines

• Utilities

• Industrial Plants

Engineering Inputs for RFQ

For technical enquiry and quotation, provide:

Valve Type • Size • Pressure Class • Fluid • Flow Direction • Design Pressure • Design Temperature • Body Material • Disc Material • Stem Material • Trim & Seat • End Connection • Operation/Actuation • Installation Orientation • Required Flow Rate • Allowable Pressure Drop • Shut-Off Requirement • Testing & Inspection Requirements.

Manufacturer Brands

1. ZOLOTO — Industrial Valves

Brand: ZOLOTO

Website: www.zolotovalves.com

2. MARCK — Industrial Valves

Brand: MARCK

Manufacturer: Hawa Engineers Ltd.

Website: www.marckvalves.com

3. LEHRY — Industrial Valves and Instrumentation

Brand: LEHRY

Manufacturer: Lehry Instrumentation & Valves Pvt. Ltd.

Website: www.lehryvalves.com

4. UFLOW — Automation and Process Control Valves

Brand: UFLOW

Manufacturer: Uflow Automation India

Website: www.uflowvalve.com

5. V-TORK CONTROLS — Industrial Flow Control Valves

Brand: V-TORK CONTROLS

Website: www.vtorkcontrols.com

6. PENNANT — Steam Traps and Pipeline Accessories

Brand: PENNANT

Manufacturer: Pennant Engineering Pvt. Ltd.

Website: www.pennantcorp.com