Nace Piping Products is a globally recognized manufacturer and supplier of high-precision Instrument Tube Fittings. Engineered for absolute leak-tight performance, our compression fittings are designed to connect instrumentation, process, and control systems in the most demanding industrial environments. They offer excellent resistance to vibration, pressure surges, and extreme temperature cycling.
Utilizing an advanced twin-ferrule (front and back ferrule) design, our instrument fittings ensure a reliable mechanical grip on the tube, resulting in a perfect gas-tight seal. We supply fittings that are fully interchangeable and compatible with global industry standards, guaranteeing safety in critical applications.
Technical Specifications
Detailed dimensional and capability specifications for our instrument tube fittings.
| Tube Sizes (OD) | 1/16" OD to 2" OD (Fractional) & 2 MM to 50 MM OD (Metric) |
|---|---|
| Thread Standards | NPT, BSP (Parallel / Tapered), BSPT, UNF |
| Pressure Ratings | Stainless Steel: Up to 6000 PSI Brass: 300 / 1000 / 3000 PSI |
| Standard Forms | Tube to Tube – Straight, Elbow, Tee, Cross, Bulkhead, Male Stud, Male Elbow, Male Tee, Female Connector, Female Straight, Elbow, Tee, Positional Elbow, Tee (Swivel), Tube Closure, Plug, Cap, Weld Connector, Nut, Ferrule Set. |
| Instrumentations | Air Headers (6/8/10/12-Way & Customized), Manifold Valves (2, 3, 5-Way), Condensate Pots, Thermowells, Pressure Gauges, Temperature Gauges, Temperature Sensors. |
| Test Certificates | EN 10204 3.1, Hydrostatic Test, Pneumatic Test, PMI Report, Third Party Inspection |
Material Grades
We manufacture precision instrument fittings using high-grade, corrosion-resistant alloys.
| Material Category | Common Alloys Used |
|---|---|
| Stainless Steel | SS 304, 304L, 316, 316L, 316Ti, 321, 904L |
| Duplex & Super Duplex | UNS S31803 (Duplex), UNS S32750 (Super Duplex) |
| High Nickel Alloys | Inconel (600, 625, 825), Monel (400, K500), Hastelloy (C276, C22) |
| Copper Alloys | Brass, Cupro-Nickel, Bronze |
| Special Alloys | Titanium, SMO 254 |
Types of Instrument Fittings
We supply a complete range of instrumentation tube fittings in Imperial and Metric series, designed for precision engineering requirements.
Union Tee - UT
Reducing Union - RU
Bulkhead Union - BU
Union - U
Union Elbow - UE
Union Cross - UC
Male Connector NPT (Imperial)
Male Elbow NPT (Metric)
Male Connector NPT (Metric)
Male Elbow NPT BSP
Male Connector BSP
Male Elbow 45° NPT
Male Connector BSPP
Male Run Tee NPT
Male Bulkhead Connector
Male Branch Tee NPT
Male Elbow NPT (Imperial)
Female Connector NPT
Female Elbow NPT - FEN
Female Run Tee NPT
Female Connector BSP/BSPP
Female Branch Tee NPT
Female Bulkhead Connector
Blanking End - BE
Front Ferrule - FF
Back Ferrule - BF
Blanking Plug - BP
Tube Nut - NU
Key Features of Our Compression Fittings
Our twin-ferrule instrument fittings are meticulously engineered for flawless performance in vibration-prone and high-pressure fluid networks.
Twin-Ferrule Design
The combination of a front ferrule (for a primary gas-tight seal) and a back ferrule (for axial gripping and vibration resistance) creates a perfect mechanical hold without damaging the tubing.
Vibration & Impulse Resistance
The unique geometry of the back ferrule isolates stress from the primary seal area, ensuring long-lasting leak integrity even in high-vibration applications.
Galling-Resistant Threads
Nuts are precision-machined with silver-plated threads or specialized anti-galling coatings to reduce friction, allowing for consistent torque during installation and multiple remakes.
Interchangeability
Our fittings are strictly manufactured to international dimensional standards, making them fully interchangeable and intermixable with major global instrumentation fitting brands.
Industrial Applications of Instrument Fittings
Our precision instrument fittings are deployed globally in highly critical sectors requiring absolute fluid and gas containment.
Chemical Processing
Corrosion-resistant connections for aggressive chemical sampling lines.
Oil & Gas Exploration
High-pressure control panels, hydraulic logic, and wellhead instrumentation.
Semiconductor Mfg
Ultra-high purity (UHP) gas delivery networks and vacuum systems.
Pharmaceuticals
Sanitary instrumentation manifolds and pure water/steam distribution.
Power Generation
Turbine control systems, boiler instrumentation, and analyzer lines.
Aerospace
Critical hydraulic and pneumatic control lines on test stands and aircraft.
Why Source Instrument Fittings from Nace Piping Products?
When engineering analytical, control, or processing systems, the cost of a single leak is immense. As a top-rated manufacturer, we guarantee perfection in every fitting:
- 100% Leak Tested: Every batch undergoes severe hydrostatic and pneumatic pressure testing to ensure zero-leak performance.
- Exotic Alloy Expertise: Beyond standard 316SS, we manufacture fittings in Monel, Hastelloy, and Duplex for extremely corrosive environments.
- Complete Traceability: Fittings are heat-code traceable and dispatched with an EN 10204 3.1 Mill Test Certificate (MTC).
- Custom Instrumentation Solutions: We offer customized air headers, manifold valves, and condensate pots designed precisely to your project's P&ID.