A wide range of 700 bar (70 MPa) hydrogen PRDs are available, including end plug and remote-activated models for long tanks. Options include temperature sensors, clocking, and compatibility with multiple tank neck geometries (1-1/2”, M45, and remote).
All H-PRD70 devices share the same activation design and are typically paired with H-TV70 GFI tank valves for complete bonfire and thermal event protection.
Design
- End plug and remote-activated configurations available
- Remote PRDs include inlet, vent, and outlet ports (final PRD has only inlet and vent)
- Optional temperature sensors and clocking configurations
- Compatible with various tank thread geometries: M25, 1-1/2”, and M45
Performance & Options
- Nominal working pressure of 700 bar (70 MPa)
- Pipe-away TPRD activation at 110 °C ± 5 °C
- Operating temperature range: –40 °C to +85 °C
- High-flow and fast-activating relief design
- Lightweight aluminum construction
- Cadmium-free eutectic activation technology
- Certified with EC 79; pending ECE R134 and others
H-PRD70 Series |
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|---|---|
General Information |
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| Application | Suitable for 70MPa hydrogen cylinders |
| Design | Thermally activated PRD |
| Body Material | Aluminum, anodized |
| Fuel Type | Hydrogen per SAE J2719 and ISO 14687 |
Performance |
|
| Nominal Working Pressure | 70 MPaG |
| Max Working Pressure | 87.5 MPaG |
| Operating Temperature | -40 °C to +85 °C |
| T-PRD Activation | 110 ± 5°C |
| T-PRD Orifice | up to 4 mm equivalent diameter |
Connections |
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| Configurations | M25, 1-1/2", M45, versions with temperature sensor, remote (with various inlet fitting options) |
| TPRD Vent Port Type | Depending on model: 7/16-20 UNF-2B, 9/16-18 UNF-2B (others possible) |
Certifications |
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| Certifications | EC79, ECE R134 pending |
