hazardousH₂CAS 1333-74-0
Valves for Hydrogen (H₂) Service
Hydrogen is the smallest molecule - extreme permeation tendency, wide flammability range (4–75%), and susceptibility to hydrogen embrittlement in high-strength steels. Valve selection must prioritise fire-safe design, metal-to-metal seating, and embrittlement-resistant materials.
Pressure Range
0.1–700 bar (process to HP storage)
Temperature
-253°C (liquid H₂) to 550°C (reformer)
Industries
Green hydrogen production, Hydrogen refuelling stations, Ammonia production
What valves are used for Hydrogen (H₂) service?
SS 316L metal-seated ball valve (fire-safe) are recommended for Hydrogen (H₂) service: H₂ infrastructure - API 6D fire-safe design with PEEK seats.
Key Properties - Hydrogen (H₂)
- Flammability range: 4–75% in air
- Auto-ignition: 500°C - but can ignite on sudden decompression
- Hydrogen embrittlement: affects high-strength steels, especially >690 MPa
- Permeation through polymers - PTFE and PEEK preferred for seals
- Colourless, odourless - requires specialised detection
Vajra Industrial Solutions manufactures and supplies valves for Hydrogen (H₂) service — including ss 316l metal-seated ball valve (fire-safe) — in corrosion-appropriate materials selected for the operating conditions described here, with full material and test documentation.
Need valves for Hydrogen (H₂) service?
Send your fluid conditions — we'll recommend the right valve, material and standard, with a 24-hour quote.
Material Compatibility - Hydrogen (H₂)
Ratings are indicative. Actual compatibility depends on concentration, temperature, velocity, and presence of contaminants. Always consult corrosion tables or a materials engineer.
| Material | Rating | Notes |
|---|---|---|
| SS 316L | Good | Standard for hydrogen service. Austenitic SS has low susceptibility to HE. |
| Duplex 2205 | Fair | Risk of HE at high pressure. Verify per ISO 11114-4. |
| Inconel 625 / 718 | Excellent | Excellent HE resistance for high-pressure HP service. |
| Carbon Steel (low hardness) | Fair | Max 22 HRC per NACE MR0175 for sour/H₂ service. Not for HP hydrogen. |
| High-strength steel (>690 MPa) | Not Recommended | Severe HE risk - never use hardened steels in hydrogen service. |
| PTFE | Excellent | Preferred seal material - lowest permeation rate. |
| PEEK | Excellent | Superior to PTFE at elevated temperature hydrogen service. |
| Nitrile NBR | Poor | High permeation rate - not acceptable for high-pressure H₂. |
Recommended Valves
SS 316L metal-seated ball valve (fire-safe)
H₂ infrastructure - API 6D fire-safe design with PEEK seats
Full selection guideBellows-sealed globe valve
Zero stem leakage - critical for high-purity H₂ process
Full selection guideAnti-static ball valve
Hydrogen is extremely flammable - antistatic device essential
Full selection guideValves to Avoid
High-strength steel bodied valves (HRC > 22)
NBR or EPDM seated valves - high permeation
Non-fire-safe valves in any H₂ service
Valves with dead-leg pockets where H₂ can accumulate
Special Considerations
Applicable Standards
Shop Valves for Hydrogen (H₂) Service
Other Fluid Services
Hydrogen (H₂) Service — Procurement & Specification
Typical Applications
Available Standards
Material Options
Documentation Available
- -EN 10204 3.1 Material Test Certificates (heat traceable)
- -API 598 hydrostatic shell & seat test reports
- -Dimensional inspection reports
- -Full Manufacturing Data Record (MDR) / data book on request
Inspection Options
- -In-house QC inspection on every order
- -Third-party inspection (SGS / Bureau Veritas / TÜV / DNV) coordination
- -Witness and hold points accommodated on request
Order Quantities
Flexible — from single critical-spare valves to full project lots.
Export
Worldwide export with complete documentation (COO, EUR.1, packing lists) to 20+ countries.
Custom Engineering
Built to your specification — materials, trim, pressure class and special service (NACE, fire-safe, IBR, cryogenic).
Delivery Support
Dispatch from Vadodara, Gujarat with documented lead times and priority handling for urgent requirements.
Engineering references
Connected Engineering
Need Valves for Hydrogen (H₂) Service?
Tell us your fluid, pressure, and temperature — we'll recommend the right valve, material, and standard, with a 24-hour quote.