Pipe-Lok Vales & Fittings Company delivers precision-engineered instrumentation fittings and valves trusted for reliability, safety, and performance in industrial applications with a strong focus on engineering excellence and quality control.
Manufactured for specialized corrosive and high-temperature applications where niobium compatibility is required. Niobium pressure relief valves are used in selected chemical, vacuum and advanced process systems requiring refractory metal performance.
High-Performance Flow & Safety Instrumentation Solutions
Niobium is a refractory metal offering good corrosion resistance in selected aggressive media and excellent high-temperature stability.
| Element | Weight Percentage (%) |
|---|---|
| Niobium (Nb) | 99.8 min typical |
| Tantalum (Ta) | 0.10 max typical |
| Oxygen (O) | 0.05 max typical |
| Nitrogen (N) | 0.03 max typical |
| Carbon (C) | 0.03 max typical |
| Iron (Fe) | 0.01 max typical |
*Composition limits are indicative for the listed grade family; applicable product specifications may vary depending on valve component and product form.
Niobium provides good ductility and refractory metal stability for specialized pressure relief valve components.
| Property | Typical / Minimum Value |
|---|---|
| Tensile Strength | 275 MPa typical |
| 0.2% Yield Strength | 170 MPa typical |
| Elongation | 20% typical |
| Hardness | Approx. 80 HB typical |
| Density | Approx. 8.57 g/cm3 |
*Mechanical requirements depend on product form, heat treatment and applicable ASTM/ASME specification. Confirm final values against the material specification used for the pressure relief valve component.
High-performance material specifications for our complete Pressure Relief Valve range.
Designed for demanding pressure systems where material compatibility, corrosion resistance and reliable pressure protection are essential.
Used where niobium compatibility is required for corrosive media.
Applicable for selected elevated-temperature pressure circuits.
Used in specialized vacuum and research installations.
Suitable for pilot and experimental process equipment.
Used in process systems serving specialty metal and materials production.
Selected after detailed media compatibility review.
Pipe-Lok Vales & Fittings manufactures high-quality alternatives to the following standard industry part numbers
| Swagelok Part No. | Pipe-Lok Vales & Fittings Equivalent | Availability |
|---|---|---|
| SS-4R3A | Available | Ready to Ship |
| SS-4R3A1 | Available | Ready to Ship |
| SS-4R3A5 | Available | Ready to Ship |
| SS-4R3A5-BU | Available | Ready to Ship |
| SS-4R3A5-EP | Available | Ready to Ship |
| SS-4R3A5-KZ | Available | Ready to Ship |
| SS-4R3A5-NE | Available | Ready to Ship |
| SS-4R3A5-RT | Available | Ready to Ship |
| SS-4R3A-BU | Available | Ready to Ship |
| SS-4R3A-EP | Available | Ready to Ship |
| SS-4R3A-KZ | Available | Ready to Ship |
| SS-6R3A-MM | Available | Ready to Ship |
| SS-8R3A-MM | Available | Ready to Ship |
| SS-R4M8F8 | Available | Ready to Ship |
| SS-R4M8S8 | Available | Ready to Ship |
| SS-R4S8 | Available | Ready to Ship |
| SS-R4S12MM | Available | Ready to Ship |
| SS-RL3M4-F4 | Available | Ready to Ship |
| SS-RL3M4F4-RT | Available | Ready to Ship |
| SS-RL3M4-S4 | Available | Ready to Ship |
| SS-RL3S4 | Available | Ready to Ship |
| SS-RL3S4-SC11 | Available | Ready to Ship |
| SS-RL3S4-EP | Available | Ready to Ship |
| SS-RL3S4-MO | Available | Ready to Ship |
| SS-RL3S4-KZ-11002 | Available | Ready to Ship |
| SS-RL3S6MM | Available | Ready to Ship |
| SS-RL3S8MM | Available | Ready to Ship |
| SS-RL4M8F8 | Available | Ready to Ship |
| SS-RL4MR8 | Available | Ready to Ship |
| SS-RL4S8 | Available | Ready to Ship |
| SS-RL4S12MM | Available | Ready to Ship |