Valve Bonnets for Oil and Gas

Precision-Manufactured Bonnets for High-Pressure Valve Systems

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Valve Bonnet Parts - Align MFG Part Manufacturing
Overview

Valve Bonnet Parts Manufacturing

Bonnets are essential structural components that seal valve internals against high-pressure flow, guide actuation elements, and ensure long-term operational integrity in demanding oilfield environments.

At Align Manufacturing, we machine and fabricate bonnets for API 6A-compliant valves, built to the dimensional, metallurgical, and inspection standards required by the world’s leading energy OEMs. Manufactured across India, Vietnam, and Thailand under strict QA oversight, our bonnets deliver reliable sealing performance and precise alignment for gate, plug, and check valves.

Key Features

Types of Bonnets We Manufacture

Bonnet Type Applications
Bolted Bonnets High-pressure API 6A valves
Welded Bonnets Compact valves and space-limited applications
Pressure Seal Bonnets HPHT service valves and BOP systems
Threaded Bonnets Small bore valves, low/medium pressure

Each bonnet is machined, tested, and documented to ensure dimensional and metallurgical compliance with customer specifications.

Building Confidence into Every Valve Assembly

Our bonnet production process emphasizes:

  • Material traceability to API/NACE standards

  • On-site QA inspections at offshore facilities

  • Pressure boundary machining with precise surface finish control

  • DFM (Design for Manufacturability) support to optimize machining time and costs

  • Coating prep for cladding, tungsten carbide, or Xylan applications if required

Whether your design calls for a single-piece forged bonnet, a bolted closure, or a pressure-sealed connection, Align builds the parts you need to keep your valve assemblies operating under extreme conditions.

Applications

Applications for Our Bonnets

Align’s bonnets are designed for:

  • API 6A Gate Valves (Frac Valves, Wellhead Valves)

  • Plug Valves and Choke Valves

  • Kill Manifolds and Flowback Systems

  • Frac Trees and Zipper Manifolds

  • Production Wellhead Equipment

  • Surface Safety Valves (SSVs)

Specifications

Technical Capability Snapshot

Capability Details
Pressure Ratings Up to 15,000 psi (API 6A Class 4–5)
Material Options AISI 4130, 410SS, Inconel 625, Duplex, 17-4PH
Part Sizes Up to 12" OD, up to 300 lbs
Surface Finishing Machining-ready for cladding or nitriding
Tolerances Critical dimensions down to ±0.0005"
Inspection CMM inspection, visual, and material traceability

Bonnets in Manifold and Pressure Control Systems

In addition to standalone valve assemblies, Align-manufactured bonnets are essential parts of larger systems like frac manifolds, flowback trees, and kill systems. They ensure pressure containment and enable rapid, reliable actuation even under high cyclic loading conditions, critical for maintaining well control and operational efficiency.

Bonnet section of Valve for Oil and Gas - Align MFG Parts Manufacturing
Oilfield OEM that would need API 6A Ring Gaskets
Align MFG Valve Bonnets

Why Oilfield Equipment Builders Choose Align

  • Global manufacturing with local QA presence

  • Repeatable quality across production batches

  • Flexible order sizes — from prototyping to serial production

  • Engineering expertise in critical dimensions, sealing surfaces, and API compliance

Resources

In addition to our manufacturing capabilities, Align MFG plays a crucial role in optimizing supply chains. Our expertise in consolidating shipments, especially in regions like Vietnam, India, and Thailand , significantly reduces logistics costs and enhances efficiency, offering a reliable alternative to traditional sourcing from China. You can read more details about this below.

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Partner with Align MFG for Premium Oil & Gas Valve Bonnets


Our dedication to quality is matched by our commitment to effective communication. Keeping clients informed and involved is a priority, ensuring a seamless experience from order to delivery.

Discover the difference with Align MFG’s Oil and Gas parts. Contact us to explore how our expertise in metal manufacturing can reduce operational costs. Trust Align MFG for components that drive efficiency and reliability.