hydrocarbon
Valves for Natural Gas Service
Natural gas (primarily methane) is transported in high-pressure pipelines and distributed at lower pressures. Pipeline service requires API 6D trunnion ball valves. City gas distribution (CGD) networks in India are regulated by PNGRB. Sour gas (H₂S-containing) requires NACE MR0175 materials.
Pressure Range
0.1 bar (distribution) to 150 bar (HP transmission)
Temperature
Ambient to 80°C
Industries
CGD city gas distribution, Gas transmission pipelines, CNG / PNG networks
What valves are used for Natural Gas service?
API 6D trunnion ball valve are recommended for Natural Gas service: High-pressure natural gas transmission pipelines - PNGRB standard.
Key Properties - Natural Gas
- Primary component: methane (CH₄) - 87–97%
- Odourless in pure form - mercaptans added for detection
- Flammability range: 5–15% in air
- MAOP (Maximum Allowable Operating Pressure) for city gas typically 0.1–19 bar
- Sour gas (H₂S) requires NACE MR0175 materials
Vajra Industrial Solutions manufactures and supplies valves for Natural Gas service — including api 6d trunnion ball valve — in corrosion-appropriate materials selected for the operating conditions described here, with full material and test documentation.
Need valves for Natural Gas service?
Send your fluid conditions — we'll recommend the right valve, material and standard, with a 24-hour quote.
Material Compatibility - Natural Gas
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 |
|---|---|---|
| Carbon Steel (API 5L, WCB) | Excellent | Standard pipeline material for sweet natural gas. |
| SS 316L | Excellent | Instrument and small bore service. |
| Duplex 2205 | Excellent | Sour gas service - superior H₂S resistance. |
| PTFE seats | Excellent | Standard for natural gas ball valve seats. |
| NBR | Good | Acceptable for low-pressure gas seals. HNBR for higher pressure. |
Recommended Valves
API 6D trunnion ball valve
High-pressure natural gas transmission pipelines - PNGRB standard
Full selection guideASME Class 300/600 gate valve
Block and bleed at compressor stations and offtakes
Full selection guideESD (Emergency Shut-Down) valve with actuator
Mandatory on city gate stations and compressor stations
Slam-shut valve
Automatic overpressure cut-off in gas distribution networks
Valves to Avoid
Non-fire-safe valves in any natural gas service
Copper-alloy valves for high-H₂S sour gas
Globe valves for mainline pipeline isolation
Special Considerations
Applicable Standards
Shop Valves for Natural Gas Service
Other Fluid Services
Natural Gas 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 Natural Gas Service?
Tell us your fluid, pressure, and temperature — we'll recommend the right valve, material, and standard, with a 24-hour quote.