When industrial operations face unexpected downtime or critical component wear, time becomes the most valuable resource. At T & W Valve and Machine Company, we understand that halting production to send equipment off-site for repairs isn’t always an option. That’s why we offer comprehensive field machining services, bringing our machining expertise directly to your job site—where and when you need it most.

Precision Machining at Your Location

Field machining, also known as on-site or in-situ machining, involves performing precision machining operations at the customer’s location. Instead of disassembling and transporting heavy or fixed equipment to a machine shop, our technicians travel to your site equipped with state-of-the-art portable machining tools. This allows us to restore, repair, or modify components without the time, cost, and risk associated with removing them from service.

At T & W Valve and Machine Company, we’ve built a reputation for delivering high-quality machining and valve repair solutions throughout the Lower 48 states. Our field machining team extends that same level of craftsmanship beyond our shop walls, ensuring that clients across industries can rely on fast, accurate, and dependable service—wherever they operate.

Our Range of Field Machining Services

We specialize in a wide range of field machining capabilities designed to address the most demanding maintenance and repair challenges. Whether your facility is dealing with worn sealing surfaces, misaligned bores, or damaged flanges, our technicians can perform precision work on-site with minimal disruption to your operations.

Flange Facing

Flange surfaces are critical for creating proper seals in piping systems, and even minor damage can lead to leaks and system failures. Our portable flange facers allow us to resurface flanges of virtually any diameter, restoring them to factory specifications. We handle standard and specialty flange types, ensuring tight, reliable seals in high-pressure systems.

Line Boring

Misalignment or wear in bores can cause excessive vibration, premature bearing failure, or poor equipment performance. Our line boring services correct these issues by restoring concentricity and alignment directly at your facility. We use precision boring equipment capable of handling small to large bore diameters, ensuring consistent accuracy and smooth operation.

Shaft Turning and Journal Repair

Worn or scored shafts can compromise rotating equipment, leading to mechanical failure or costly downtime. T & W Valve and Machine Company offers on-site shaft turning and journal restoration, bringing your components back to proper tolerances without requiring disassembly. Our technicians can machine shafts of various lengths and diameters, including those in pumps, turbines, and compressors.

Milling and Drilling

For components requiring flat surfaces, bolt patterns, or custom modifications, our portable milling and drilling units provide the flexibility to perform precision machining in tight or remote spaces. Whether it’s creating a new mounting surface, enlarging bolt holes, or machining keyways, we bring shop-level precision to your facility.

Valve Seat and Sealing Surface Repair

As specialists in valve repair, we understand the importance of precision sealing surfaces. Our field technicians can re-machine valve seats, stems, and body sealing areas to restore tight shutoff performance and prevent costly leaks. This service is particularly valuable for critical process systems that cannot afford extended downtime.

Weld Preparation and Post-Weld Machining

Before welding, proper beveling and surface preparation are essential for strong, defect-free welds. Our field machining services include bevel cutting, weld prep, and post-weld machining to ensure the integrity and smooth finish of every repair or modification. We can also perform machining on welded areas to meet dimensional requirements and improve fit-up.

Industries We Serve

T & W Valve and Machine Company provides field machining services to clients across a wide range of industries, including:

• Oil and Gas: Maintenance of pipelines, pressure vessels, and process valves.
• Power Generation: Machining of turbine components, generators, and steam systems.
• Petrochemical and Refining: In-situ repair of flanges, reactors, and pressure equipment.
• Marine and Shipbuilding: On-deck or dockside machining of propulsion and control systems.
• Pulp and Paper: Maintenance of rotating equipment, dryers, and pressure vessels.
• Manufacturing and Heavy Industry: Precision repair of production equipment and plant infrastructure.

No matter the sector, we understand that every hour of downtime costs money. That’s why we arrive fully prepared with the right tools and experience to complete the job efficiently and correctly the first time.

Benefits of Choosing On-Site Machining

Field machining delivers significant advantages over traditional repair approaches. By performing machining operations at your location, T & W Valve and Machine Company helps you:

• Reduce Downtime: No need to remove and transport large components to a machine shop.
• Save Costs: Minimize shipping, handling, and reinstallation expenses.
• Increase Safety: Eliminate risks associated with moving heavy equipment.
• Maintain Precision: Portable machining tools achieve the same high accuracy as in-shop equipment.
• Extend Equipment Life: Timely, precision repairs prevent further damage and prolong service life.

Our technicians work with your maintenance and operations teams to plan and execute repairs around your production schedule, ensuring minimal disruption and maximum uptime.

Equipment and Expertise You Can Trust

At T & W Valve and Machine Company, we invest in the latest portable machining technology and continuous technician training. Our mobile units are equipped to handle a full range of turning, milling, boring, and resurfacing operations—all performed under the same strict quality standards we uphold in our in-house facility.

Each field machining project is managed by experienced machinists who understand the unique requirements of industrial repair work. From tight access environments to high-precision tolerances, our crews deliver the craftsmanship, safety, and reliability that our customers have come to expect.

Commitment to Quality and Safety

Quality workmanship and safety are at the core of every T & W Valve and Machine Company service. Before any project begins, our team performs a thorough site assessment, identifying potential challenges and ensuring that all machining operations are carried out safely and efficiently. We follow strict procedures to maintain alignment, accuracy, and cleanliness, guaranteeing that your equipment performs like new once repairs are complete.

We are proud to maintain long-standing relationships with clients who trust us for both our technical expertise and our commitment to doing the job right the first time.

Your Partner in On-Site Precision

Whether your operation involves valves, pumps, turbines, or complex pressure systems, T & W Valve and Machine Company has the experience, equipment, and dedication to provide the highest level of field machining service. From routine maintenance to emergency repairs, we respond quickly—minimizing downtime, reducing costs, and keeping your operation running smoothly.

When you can’t afford to stop production, we bring the machine shop to you.

Contact T & W Valve and Machine Company today to learn more about our field machining capabilities or to schedule an on-site evaluation. Our team is ready to deliver precision, reliability, and service excellence wherever your equipment operates.