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.
Built for extremely corrosive acid services where exceptional chemical resistance is required. Tantalum pressure relief valves are selected for severe hydrochloric, sulfuric, nitric and mixed acid applications after detailed media and temperature review.
High-Performance Flow & Safety Instrumentation Solutions
Tantalum is a refractory metal known for outstanding acid resistance and a stable protective oxide film.
| Element | Weight Percentage (%) |
|---|---|
| Tantalum (Ta) | 99.85 min typical |
| Niobium (Nb) | 0.10 max typical |
| Oxygen (O) | 0.03 max typical |
| Nitrogen (N) | 0.01 max typical |
| Carbon (C) | 0.01 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.
Tantalum offers excellent corrosion resistance with good ductility and high density for specialized valve components.
| Property | Typical / Minimum Value |
|---|---|
| Tensile Strength | 207 MPa min typical |
| 0.2% Yield Strength | 138 MPa min typical |
| Elongation | 25% min typical |
| Hardness | Approx. 120 HB typical |
| Density | Approx. 16.6 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.
Selected for severe acid pressure protection applications.
Used in high-purity corrosive chemical systems.
Suitable for specialty chemicals and reactive process streams.
Used in acid-side pressure protection circuits.
Applicable for pilot plants handling highly corrosive media.
Used in selected chloride environments after engineering 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 |