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.
Specified for lightweight, highly corrosion-resistant pressure protection in seawater, chlorides and oxidizing environments. Titanium pressure relief valves combine excellent strength-to-weight ratio with outstanding resistance to many wet chlorine and marine services.
High-Performance Flow & Safety Instrumentation Solutions
Titanium Grade 2 is a commercially pure titanium grade valued for excellent corrosion resistance, ductility and weldability.
| Element | Weight Percentage (%) |
|---|---|
| Titanium (Ti) | Balance |
| Oxygen (O) | 0.25 max |
| Iron (Fe) | 0.30 max |
| Carbon (C) | 0.08 max |
| Nitrogen (N) | 0.03 max |
| Hydrogen (H) | 0.015 max |
*Composition limits are indicative for the listed grade family; applicable product specifications may vary depending on valve component and product form.
Titanium Grade 2 offers a strong combination of corrosion resistance, ductility and moderate mechanical strength.
| Property | Typical / Minimum Value |
|---|---|
| Tensile Strength | 345 MPa min |
| 0.2% Yield Strength | 275 MPa min |
| Elongation | 20% min |
| Hardness | Approx. 160 HB max |
| Density | Approx. 4.51 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.
Titanium Grade 5 is an alpha-beta alloy containing aluminium and vanadium. It is the most widely used titanium alloy, offering far higher strength than commercially pure grades at the same low density.
| Element | Weight Percentage (%) |
|---|---|
| Aluminium (Al) | 5.50 - 6.75 |
| Vanadium (V) | 3.50 - 4.50 |
| Iron (Fe) | 0.40 max |
| Oxygen (O) | 0.20 max |
| Carbon (C) | 0.08 max |
| Nitrogen (N) | 0.05 max |
| Hydrogen (H) | 0.015 max |
| Residuals (each / total) | 0.10 max / 0.40 max |
| Titanium (Ti) | Balance |
*Composition limits are as per the applicable ASTM/ASME specification for UNS R56400; actual limits may vary depending on valve component and product form.
Titanium Grade 5 gives an exceptional strength to weight ratio with good corrosion resistance, suiting it to weight-critical offshore and subsea relief valve applications.
| Property | Typical / Minimum Value |
|---|---|
| Tensile Strength | 895 MPa min |
| 0.2% Yield Strength | 828 MPa min |
| Elongation | 10% min |
| Hardness | Approx. 334 HB |
| Density | Approx. 4.43 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.
Excellent for marine, desalination and seawater handling pressure protection.
Used in oxidizing acids, chlorides and selected chemical media.
Suitable for clean, corrosion-resistant process instrumentation.
Selected where low weight and corrosion resistance are important.
Used in cooling water and heat transfer systems.
Applicable for wet chlorine and chloride environments after media 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 |