Technical Data Sheet
Product: 3-Piece Vacuum Ball Valve with Nipples
Model / Size: 1″ – 800LB – Nipples
Konfigurasi: Three-piece body construction with integral nipples (socket weld or butt weld ends) for vacuum service
- Product Description
This valve is a three-piece ball valve specifically designed for vacuum service, featuring integral nipples (short pipe extensions) welded or integrally formed on both ends. The three-piece construction allows for easy in-line maintenance without removing the entire valve from the piping system. The valve is rated for Class 800LB pressure, making it suitable for high-pressure vacuum applications, gas handling, and critical process systems where absolute leak integrity is required. It is ideal for vacuum systems, high-purity gas lines, and high-cycle applications where reliable shut-off is essential.
- Basic Parameters
Item | Parameter |
Saiz Nominal | 1 inch (DN 25) |
Pressure Class | Class 800LB (equivalent to PN 140 bar) |
End Connections | Integral Nipples (Socket Weld or Butt Weld) – per ASME B16.11 or ASME B16.25 |
Binaan Badan | 3-Piece (center body with two end caps) |
Jenis Injap | Floating ball, full port or reduced port (as specified) |
Stem Sealing | Live-loaded packing or PTFE/stainless steel bellows (for vacuum service) |
Operasi | Lever handle (standard), gear operator, or actuator (optional) |
Vacuum Rating | Suitable for high vacuum (1×10⁻⁶ Torr and above) |
- Piawaian Reka Bentuk
Item | Standard |
Design & Manufacture | ASME B16.34 / API 608 (or manufacturer’s standard) |
End Connections (Nipples) | ASME B16.11 (Socket Weld) or ASME B16.25 (Butt Weld) |
Face-to-Face Dimensions | Manufacturer’s standard (with nipples) |
Inspection & Testing | API 598 / ISO 5208; vacuum leak test per ASME PVHO or helium mass spectrometry |
Vacuum Testing | Helium leak test with leakage rate ≤ 1×10⁻⁶ Pa·m³/s (or better) |
Material Traceability | EN 10204 3.1 (optional) |
- Bill of Materials (Typical Configuration)
Part Name | Material (Typical Options) | Teguran |
Body (Center) | A105 / A182 F316 / A182 F304 | Forged steel or stainless steel |
End Caps (x2) | A105 / A182 F316 / A182 F304 | Same material as body |
Nipples (x2) | A106 Gr.B / A312 TP316 | Integral or welded extensions |
bola | A182 F316 / A182 F304 | Chrome plated or electropolished for vacuum service |
Seats | PTFE / Reinforced PTFE / PEEK | Low outgassing materials for vacuum |
Batang | A182 F316 / A182 F304 | Precision machined |
Stem Packing / Seals | PTFE / Graphite / Bellows (optional) | Low leakage, vacuum-rated |
Body Seals (End Caps) | PTFE / Spiral wound gasket | Vacuum-tight sealing |
Handle / Operator | Stainless steel / Carbon steel | Locking handle option available |
- Dimensions & Weight (Reference)
Item | Value |
Overall Length (End-to-End) | Approx. 200 ~ 250 mm (including nipples, manufacturer dependent) |
Overall Height | Approx. 100 ~ 120 mm (lever type) |
Nipple Length (each) | Approx. 50 ~ 75 mm (varies by manufacturer) |
Nipple End Type | Socket Weld (per ASME B16.11) or Butt Weld (per ASME B16.25) |
Approx. Weight | 4.5 ~ 7.5 kg (depending on material and nipple length) |
Note: Dimensions and weights are typical values and may vary by manufacturer.
- Operating Conditions
Item | Parameter |
Suitable Media | Vacuum, gases, high-purity fluids, corrosive media, cryogenic liquids |
Vacuum Rating | 1×10⁻⁶ Torr (higher vacuum achievable with bellows seal and metal seats) |
Temperature Range (PTFE Seats) | -29°C ~ 180°C |
Temperature Range (PEEK Seats) | -29°C ~ 250°C |
Temperature Range (Graphite Packing) | -29°C ~ 425°C (with metal seats) |
Max. Allowable Pressure | Approx. 13.8 MPa (138 bar) at ambient temperature (38°C) |
Leakage Rate (Vacuum) | ≤ 1×10⁻⁶ Pa·m³/s (helium mass spectrometry) |
- Testing & Inspection
Test | Requirement |
Shell Strength Test | 1.5 times rated pressure (hydrostatic); no leakage |
High-Pressure Seat Test | 1.1 times rated pressure; zero visible leakage (tight shut-off) |
Low-Pressure Pneumatic Test | 0.6 MPa compressed air; seat and stem leakage within allowable limits |
Vacuum Leak Test | Helium mass spectrometry; leakage rate ≤ 1×10⁻⁶ Pa·m³/s (or as specified) |
Operational Test | Full cycle test (opening/closing) under pressure and vacuum conditions |
Material Verification | Positive Material Identification (PMI) on critical components |
Cleanliness | Degreased and cleaned for oxygen or high-purity service (as required) |
- Features & Benefits
- Vacuum Service Optimized: Low outgassing materials, helium leak-tested, and precision-machined components ensure high vacuum integrity.
- Three-Piece Construction: Allows for in-line maintenance – end caps can be removed to access ball and seats without disturbing pipe connections.
- Integral Nipples: Pre-welded or integrally formed nipples simplify field installation, reducing welding points and potential leak paths.
- High Pressure Capability: Class 800 rating suitable for high-pressure gas and liquid systems, including hydraulic and pneumatic applications.
- Tight Shut-Off: PTFE or PEEK seats provide zero-leakage sealing in both directions.
- Low Operating Torque: Smooth ball and seat surfaces ensure easy operation, even under differential pressure.
- Locking Handle (Optional): Prevents unauthorized operation – essential for safety-critical systems.
- Fugitive Emission Compliance: Stem sealing can be designed to meet ISO 15848 or TA-Luft standards.
- Important Notes
- Vacuum Service: For ultra-high vacuum (UHV) applications, specify metal seats and bellows stem seal to achieve leakage rates below 1×10⁻⁹ Pa·m³/s.
- Installation: The valve may be installed in any orientation. Ensure proper support for piping to avoid stress on the valve body.
- Cleaning: For oxygen service or high-purity vacuum applications, the valve must be specified with degreasing and cleaning per ASTM G93 or CGA G-4.1.
- Nipple Ends: Confirm whether nipples are socket weld (SW) or butt weld (BW) to match piping specifications. Socket weld nipples require fillet welding; butt weld nipples require full penetration butt welds.
- Maintenance: When replacing seats or seals, use manufacturer-approved kits to maintain vacuum integrity.
- Material Compatibility: Verify seat and seal materials are compatible with the process media to prevent swelling, degradation, or outgassing.
If you require additional specifications such as NACE MR0175, oxygen cleaning, high-temperature bellows seal, or actuator mounting, please let me know and I can supplement the data sheet accordingly.
JAMINAN:
SAVVY VALVES komited untuk menyampaikan kualiti produk yang luar biasa dan perkhidmatan selepas jualan tanpa bimbang. Injap kami dijamin memberikan hayat perkhidmatan minimum selama 12 bulan, di mana kami akan membekalkan semua alat ganti yang diperlukan dan arahan penyelenggaraan terperinci secara percuma. Dalam tempoh jaminan, jika sebarang kerosakan bukan disebabkan oleh manusia berlaku, kami akan menggantikan komponen tanpa kos dan menyediakan sokongan teknikal profesional. Selepas jaminan tamat, pelanggan hanya perlu membayar kos alat ganti, sementara masih mendapat manfaat daripada perkhidmatan penyelenggaraan berdiskaun. Matlamat kami adalah untuk membantu pelanggan mengurangkan kos operasi dan meningkatkan kecekapan pengeluaran melalui kualiti yang boleh dipercayai dan sokongan selepas jualan yang komprehensif. Sama ada untuk pertanyaan teknikal atau keperluan penyelenggaraan, pasukan pakar kami akan bertindak balas dengan segera untuk memastikan sistem injap anda mengekalkan prestasi optimum pada setiap masa.