L&T 16" Class 900 Gate Valve Bolted Bonnet Supplier Gujarat | Awal Valve

L&T High-Pressure Gate Valve (Bolted Bonnet, 16" Class 900, API 6A / Heavy-Duty Process): Technical Specifications, Features, and Buying Guide

Introduction

In ultra-high-pressure hydrocarbon refining, offshore production manifolds, high-pressure gas reinjection, and critical power generation loops, process equipment must withstand extreme internal pressures without compromising structural integrity or zero-leakage isolation. Selecting valves for large-bore, high-pressure service demands heavy-duty casting designs, precision-machined pressure boundaries, and gear-assisted operation.

The L&T High-Pressure Gate Valve (Bolted Bonnet, 16" Class 900) is engineered to meet these stringent operational demands. Manufactured by L&T Valves to rigorous API 600, API 6A, and ASME B16.34 standards, this 16-inch Class 900 gate valve provides heavy-duty flow containment, high-torque gear-assisted operation, and long-term reliability for critical energy infrastructure.

Product Overview

The L&T 16" Class 900 Bolted Bonnet Gate Valve is a large-bore, high-pressure flow isolation valve featuring an Outside Screw and Yoke (OS&Y), rising stem design paired with a heavy-duty bevel gear operator.

Built with heavy-wall cast carbon steel (ASTM A216 WCB/WC6/WC9) or high-alloy steel (ASTM A351 CF8M), the valve utilizes a heavy bolted bonnet flange studded with high-tensile fasteners. The integrated top bevel gear gearbox allows smooth, manageable handwheel operation across severe differential pressure conditions.

Technical Specifications

The certified engineering parameters for the L&T 16" Class 900 Gate Valve are detailed in the table below:

Key Features

• Class 900 Extreme Pressure Containment: Heavy-wall body architecture rated to handle high working pressures up to 150 bar (2220 PSI) depending on operating temperature.
• Bevel Gear Torque Reduction: Factory-fitted with an enclosed, weather-proof bevel gear operator, allowing smooth, low-effort handwheel rotation even under high differential pressure loads.
• Bolted Bonnet Joint Security: Reinforced bonnet flange using a pressure-energized Ring-Type Joint (RTJ) or spiral-wound gasket, secured with high-tensile alloy studs to eliminate bonnet leakage under pressure cycles.
• Hardfaced Dynamic Seating: Stellite cobalt-base hardfacing on wedge and body seat rings provides superior resistance to erosion, galling, and wear at high velocities.
• Flexible Wedge Design: Precision-machined flexible wedge prevents mechanical jamming and thermal binding during high-temperature plant warm-ups and cool-downs.
• Full-Bore Unrestricted Flow Path: Straight-through full-port bore geometry ensures maximum flow capacity with minimal friction head loss.

Applications

The combination of high pressure capacity, API 6A/600 compliance, and gear-assisted operation makes the L&T 16" Class 900 Gate Valve suitable for severe-service applications:

• Oil & Gas Offshore & Production: High-pressure wellhead manifolds, gas reinjection platforms, and crude oil trunklines.
• Petrochemical Refining: Hydrocracker isolation units, catalytic reforming lines, and high-pressure hydrogen distribution loops.
• Power Generation Facilities: High-pressure boiler feed pump isolation, main steam loops, and superheater outlet lines.
• Cross-Country Gas Pipelines: Mainline isolation stations requiring heavy-duty flanged gate valves.

Benefits

• Smooth High-Torque Operation: Enclosed gear operator enables single-operator handwheel actuation without needing additional cheater bars or high operating effort.
• Long-Term Joint Sealing: Heavy-duty bolted bonnet construction combined with RTJ sealing ensures maintenance-free body-bonnet joint integrity.
• Extended Wear Resistance: Stellite-hardfaced seat surfaces prevent seat erosion and wire-drawing under high-velocity differential pressure drops.
• Maintenance Maintenance Access: The bolted bonnet assembly permits in-line inspection, wedge re-surfacing, and packing renewal during plant turnarounds.

L&T Valve Dealer in Ahmedabad and Gujarat

Industrial complexes across Gujarat—including oil refineries in Jamnagar, petrochemical hubs in Dahej (PCPIR), and chemical zones in Ankleshwar and Vadodara—demand heavy-duty high-pressure process hardware. Sourcing through an authorized L&T valve dealer in Ahmedabad guarantees authentic products supplied with 3.1 Manufacturer Test Certificates (MTC) and complete material heat traceability.

Key industrial regions with strong demand for L&T high-pressure Class 900 valves include:

• Ahmedabad: Industrial manufacturing sectors in Vatva, Naroda, Odhav, Changodar, and Sanand.
• Major Gujarat Industrial Zones: Vadodara, Ankleshwar, Bharuch (Dahej PCPIR), Jamnagar, Surat (Hazira), Vapi, and Rajkot.

Partnering with an established L&T valve supplier in Gujarat ensures transparent pricing, reliable procurement logistics, and specialized technical support for complex high-pressure piping projects.

Why Choose Awal Valve

When procuring critical high-pressure equipment like the L&T 16" Class 900 Gate Valve, L&T CS ball valve, or L&T SS ball valve, Awal Valve is your trusted procurement partner across Gujarat.

Why partner with Awal Valve:

• 100% Genuine L&T Inventory: Factory-direct products delivered with original Manufacturer Test Certificates (MTC, 3.1) and complete material traceability.
• Comprehensive Valve Range: Access to high-pressure gate, globe, check, and ball valves in Class 150 through Class 1500/2500 ratings.
• Gear & Actuator Options: Technical guidance in specifying bevel gearboxes, electric actuators, or hydraulic operators for high-torque applications.
• Competitive Market Rates: Market-aligned quotes tailored for EPC contractors, engineering consultants, and refinery maintenance procurement.

Conclusion

The L&T High-Pressure Gate Valve (Bolted Bonnet, 16" Class 900) is an exceptional flow isolation solution built for high-pressure energy, refining, and pipeline networks. Featuring heavy-wall casting, a bevel gear operator, Stellite hardfacing, and API 600/6A compliance, it delivers long-term operational safety and zero-leakage performance under extreme working pressures.

For price quotations, product datasheets, or quick procurement in Gujarat, contact Awal Valve—your trusted L&T ball valve dealer and heavy-duty industrial valve specialist.

Frequently Asked Questions (FAQs)

Q1: Why is a gear operator required on a 16" Class 900 gate valve?

A: At Class 900 working pressures (up to 150 bar / 2220 PSI), high differential pressure exerts immense force on a 16" gate wedge. A bevel gear operator reduces manual operating torque, allowing a single operator to open and close the valve smoothly using a standard handwheel.

Q2: What is the benefit of Ring-Type Joint (RTJ) end flanges on Class 900 gate valves?

A: RTJ flanges utilize a metal octagonal or oval ring gasket compressed into precision-machined flange grooves. This metal-to-metal sealing joint is highly resistant to high pressures, dynamic pressure surges, and high temperatures, providing superior joint integrity over standard flat gaskets.

Q3: Does the 16" Class 900 L&T Gate Valve conform to API 6A standards?

A: Yes, L&T high-pressure gate valves are engineered and tested in full compliance with API 600, API 6A, ASME B16.34, and API 598 specifications.

Q4: How can I procure authentic L&T Class 900 high-pressure gate valves in Gujarat?

A: You can source authentic L&T high-pressure valves directly through a trusted L&T valve supplier in Gujarat like Awal Valve, complete with official 3.1 manufacturer test certification.

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