L&T 16" Class 300 Motorized Globe Valve WCB Supplier Gujarat | Awal Valve

L&T Large-Bore Motorized Globe Valve (Bolted Bonnet, 16" Class 300, WCB): Technical Specifications, Throttling Features, and Buying Guide

Introduction

In large-diameter thermal power generation steam loops, high-capacity hydrocarbon refining headers, chemical plant process mains, and boiler feed water systems, precise fluid throttling and automated regulation require heavy-duty flow control machinery. Operating a 16-inch globe valve under ASME Class 300 working pressures involves massive fluid thrust across the disc, mandating heavy-wall casting, high-tensile body-bonnet bolting, and multi-turn electric motor actuation.

The L&T Large-Bore Motorized Globe Valve (Bolted Bonnet, 16" Class 300, WCB) is engineered for automated, linear flow regulation and tight shutoff in high-flow process lines. Manufactured by L&T Valves in strict compliance with BS 1873, API 623, and ASME B16.34 standards, this 16-inch Class 300 globe valve features a cast carbon steel (ASTM A216 WCB) body, a multi-stud bolted bonnet flange, and an integrated multi-turn electric motor actuator.

Product Overview

The L&T 16" Class 300 WCB Globe Valve features a heavy-wall cast carbon steel body with an Outside Screw and Yoke (OS&Y), rising stem design, and a top-mounted electric motor actuator with manual override controls.

Constructed from ASTM A216 Gr. WCB cast carbon steel (or optional WC6/WC9 alloy steel for elevated temperature steam service), this valve is built to handle ASME Class 300 pressure-temperature conditions. The heavy-duty bolted bonnet flange features high-tensile alloy studs paired with a metal Ring-Type Joint (RTJ) or spiral-wound gasket. The factory-fitted multi-turn electric actuator enables precise remote throttling, integration with plant DCS/SCADA systems, and automated open/close regulation.

Technical Specifications

The certified engineering parameters for the L&T 16" Class 300 WCB Motorized Globe Valve are detailed in the table below:

Key Features

• Automated DCS/SCADA Integration: Integrated multi-turn electric actuator provides accurate remote stem positioning, continuous flow throttling, digital status feedback, and automatic shutoff capability.
• Class 300 Pressure Containment: Heavy-wall WCB body casting safely handles working pressures up to 50 bar (740 PSI) across standard operating temperatures.
• Precision Linear Throttling: Parabolic plug geometry offers predictable, repeatable fluid regulation with low vibration during partial-opening operation.
• Stellite-Hardfaced Dynamic Seating: Cobalt-base Stellite hardfacing on the body seat ring and disc sealing face resists wire-drawing erosion, cavitation damage, and seat galling under high-velocity flow.
• Heavy Multi-Stud Bolted Bonnet: Multi-stud body-bonnet flange joint with high-tensile alloy studs ensures leak-tight sealing during thermal shock and dynamic line pressure changes.
• Emergency Manual Override: Integrated handwheel with declutch mechanism allows manual stroke operation during power outages or system commissioning.

Applications

The combination of 16-inch bore size, Class 300 pressure rating, WCB metallurgy, and automated electric actuation makes the L&T 16" Class 300 Globe Valve suitable for severe utility and process services:

• Thermal Power Plants: High-pressure steam header throttling, turbine bypass loops, boiler feed pump discharge regulation, and auxiliary steam isolation.
• Oil & Gas Refineries: Distillation unit feed control, catalyst regeneration steam control, sour water stripper throttling, and heavy oil transfer.
• Petrochemical & Chemical Complexes: Main process loop flow regulation, utility steam distribution mains, and chemical reactor feed control.
• District Heating & Cogeneration: High-capacity hot water and steam distribution headers.

Benefits

• Remote Process Automation: Eliminates manual labor required to operate large-bore globe valves against high fluid thrust, enabling centralized control room management.
• Stable High-Pressure Throttling: Rigid stem guiding and parabolic plug design maintain stable flow control with minimal noise and vibration.
• Long Seating Life: Hardfaced seat rings and disc surfaces maintain shutoff integrity under high differential pressure seating.
• In-Line Serviceability: Bolted bonnet design permits field disassembly for disc inspection, stem packing renewal, and seat re-lapping during plant turnarounds.

L&T Valve Dealer in Ahmedabad and Gujarat

Major industrial facilities across Gujarat—including power generation plants in Mundra and Ukai, refineries in Jamnagar, petrochemical complexes in Dahej (PCPIR), and chemical manufacturing hubs in Vadodara, Ankleshwar, and Vapi—depend on heavy-duty process control valves. Sourcing through an authorized L&T valve dealer in Ahmedabad ensures authentic products supplied with original 3.1 Manufacturer Test Certificates (MTC) and full material heat traceability.

Key industrial corridors with active demand for L&T motorized process valves include:

• Ahmedabad: Industrial equipment manufacturing and engineering zones in Vatva, Naroda, Odhav, Changodar, and Sanand.
• Major Gujarat Industrial Belts: Vadodara, Ankleshwar, Bharuch (Dahej PCPIR), Jamnagar, Surat (Hazira), Vapi, and Mundra.

Partnering with an established L&T valve supplier in Gujarat simplifies procurement logistics, guarantees competitive pricing, and provides expert technical support for valve automation and control system integration.

Why Choose Awal Valve

When procuring large-scale process equipment like the L&T 16" Class 300 WCB Motorized Globe Valve, L&T CS ball valve, or L&T SS ball valve, Awal Valve is your premier industrial supply partner across Gujarat.

Why partner with Awal Valve:

• 100% Genuine L&T Stock: Direct factory supply backed by official Manufacturer Test Certificates (MTC, 3.1) and complete material heat numbers.
• Comprehensive Product Portfolio: Access to L&T gate, globe, check, and ball valves in carbon steel, alloy steel, and stainless steel across Class 150 to Class 2500 ratings.
• Automation Engineering Guidance: Technical assistance in selecting electric motor actuators, enclosure explosion ratings, power supply voltages, and digital bus communication interfaces.
• Competitive Project Rates: Transparent market rates tailored for EPC contractors, power plant operators, and refinery maintenance orders.

Conclusion

The L&T Large-Bore Motorized Globe Valve (Bolted Bonnet, 16" Class 300, WCB) is a high-performance flow control solution engineered for large-scale energy and industrial process lines. Combining heavy cast carbon steel construction, Class 300 pressure containment, Stellite hardfaced seats, a multi-stud bolted bonnet, and multi-turn electric actuation, it delivers long-term operational safety, precise flow throttling, and reliable automated control.

For price quotations, actuator integration datasheets, or quick procurement in Gujarat, contact Awal Valve—your trusted L&T ball valve dealer and industrial valve automation partner.

Frequently Asked Questions (FAQs)

Q1: Why is an electric motor actuator required on a 16" Class 300 globe valve?

A: Globe valve discs seat directly against incoming line pressure. Pushing or lifting a 16-inch disc against Class 300 pressure creates massive axial stem thrust that is difficult to operate manually. An electric actuator provides consistent force and enables automated DCS flow control.

Q2: What plug design is used on large-bore L&T throttling globe valves?

A: L&T throttling globe valves typically utilize a parabolic or regulating plug design, which provides a predictable flow profile (linear or equal percentage) and reduces dynamic flow instability.

Q3: Can this valve be supplied in alloy steel for high-temperature steam service?

A: Yes, for power plant steam lines exceeding 425°C (800°F), the body material can be upgraded to ASTM A217 Grade WC6 or WC9 chrome-moly alloy steel.

Q4: How can I procure authentic L&T large-bore motorized globe valves in Gujarat?

A: You can source authentic L&T motorized valves directly through an established L&T valve supplier in Gujarat like Awal Valve, complete with official 3.1 manufacturer test certification.

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