Titanium Valve -- Grade 2 / Grade 5 Seawater / Chemical
Technical Datasheet -- Titanium Valves for Corrosive and Marine Service
Document No.SV-DATA-TIV-001
RevisionA
DateMay 2026
ManufacturerSupreme Valves India, Ahmedabad, Gujarat, India
Titanium Grade 2 (UNS R50400, commercially pure) and Grade 5 (UNS R56400, Ti-6Al-4V alloy) valves for seawater, chlorine, hypochlorite, and oxidising acid service. Exceptional corrosion resistance -- immune to seawater pitting, crevice corrosion, and galvanic coupling; immune to wet chlorine and sodium hyplorite attack. Superior strength-to-weight ratio (Grade 5 is 40% lighter than equivalent steel valve). Gate, globe, ball, and check valve types. ASTM B381 Gr. F2 / F5 body, disc, ball, seat, and stem. API 600 / API 608 / ASME B16.34 / NACE MR0175 compliant.
Technical Specifications
| Parameter | Specification |
|---|
| Product Type | Titanium Valves |
| Category | Specialty Valves |
| Size Range | 1/2" to 12" (DN15 to DN300) |
| Pressure Class | Class 150 / Class 300 / Class 600 per ASME B16.5 |
| End Connections | RF / RTJ flanged per ASME B16.5, threaded NPT / BSP, socket weld, butt weld, tri-clamp (sanitary, on request) |
| Body Material | ASTM B381 Gr. F2 (Titanium Grade 2, commercially pure) / ASTM B381 Gr. F5 (Titanium Grade 5, Ti-6Al-4V alloy) |
| Ball / Disc / Plug Material | ASTM B381 Gr. F2 / F5 with ENP or chrome plating on seating surface / solid titanium with lapped finish |
| Seat Material | Titanium Grade 2 / Grade 5 integral seat with lapped mirror finish / PTFE/RPTFE insert (soft seat, on request for lower leakage) |
| Stem Material | ASTM B381 Gr. F2 / F5 with anti-blowout design |
| Gasket Material | PTFE / RPTFE / Graphite with SS316 spiral wound (high temp, on request) -- titanium-to-titanium or titanium-to-SS316 flange gasket compatibility verified |
| Face-to-Face | ASME B16.10 |
| Operation | Handwheel (gate/globe, up to 6 inch) / Gear operator (8 inch and above) / Lever (ball, up to 4 inch) / Actuator |
| Leakage Class | API 598 / EN 12266-1 -- metal seated standard leakage (gate/globe/check); Class A (soft seat, ball) |
| Temperature Range | -60 deg C to +315 deg C (Grade 2) -- up to +425 deg C (Grade 5, on request) |
| Corrosion Resistance | Immune to seawater corrosion (no pitting, no crevice corrosion, no galvanic coupling with SS316 flanges when correctly gasketed); immune to chlorine and hypochlorite attack |
Materials of Construction
| Component | Material |
|---|
| Titanium Grade 2 | ASTM B381 Gr. F2 (UNS R50400) -- commercially pure titanium, excellent corrosion resistance, moderate strength, formable, weldable with inert gas shielding |
| Titanium Grade 5 | ASTM B381 Gr. F5 (UNS R56400) -- Ti-6Al-4V alpha-beta alloy, high strength (comparable to many steels), higher temperature capability, used where strength-to-weight is critical |
| Gasket Options | PTFE/RPTFE (standard, chemical resistant), Graphite/SS316 spiral wound (high temperature > 200 deg C, on request) |
| Coatings | Electroless nickel plating (ENP) or chrome plating on seating surfaces for wear resistance in high-cycle or abrasive service |
Testing & Inspection
| Test | Requirement |
|---|
| Testing | Hydrostatic shell test 1.5 x WP per API 598 / EN 12266-1; Seat leakage test per API 598 / EN 12266-1; Functional test -- full stroke, torque; Material certificates per EN 10204 3.1 |
| Certification | ISO 9001:2015 QMS, EN 10204 3.1 material certificates, hydrostatic and seat test reports |
Applicable Standards
| Standard | Description |
|---|
| Design Standard | API 600 Steel Gate Valves / API 608 Metal Ball Valves / API 594 Check Valves, ASME B16.34, NACE MR0175 (standard for sour service on request) |
Notes
- Titanium grade (Grade 2 or Grade 5), valve type (gate/globe/ball/check), and service fluid must be specified by the purchaser.
- For welded titanium valves, specify inert gas (argon) shielding requirements and welder qualification per ASME Section IX.
- For flange connections to dissimilar metals (e.g., titanium valve between carbon steel flanges), specify insulating gasket kit (dielectric gasket + insulating sleeves and washers) to prevent galvanic corrosion of the carbon steel flange.
- For abrasive service (seawater with sand, catalyst slurry), ENP or chrome-plated seating surfaces are recommended to prevent galling and extend seat life.
- For high-temperature service (> 315 deg C), Grade 5 (Ti-6Al-4V) is required; Grade 2 is not suitable above 315 deg C.
- All valves are manufactured by Supreme Valves India as per our standard specifications.
