Technical Data Sheet
Product: 3-Piece Vacuum Ball Valve with Nipples
Model / Size: 1″ – 800LB – Nipples
Configuration: Three-piece body construction with integral nipples (socket weld or butt weld ends) for vacuum service
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.
Item | Parameter |
Nominal Size | 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 |
Body Construction | 3-Piece (center body with two end caps) |
Valve Type | Floating ball, full port or reduced port (as specified) |
Stem Sealing | Live-loaded packing or PTFE/stainless steel bellows (for vacuum service) |
Operation | Lever handle (standard), gear operator, or actuator (optional) |
Vacuum Rating | Suitable for high vacuum (1×10⁻⁶ Torr and above) |
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) |
Part Name | Material (Typical Options) | Remarks |
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 |
Ball | A182 F316 / A182 F304 | Chrome plated or electropolished for vacuum service |
Seats | PTFE / Reinforced PTFE / PEEK | Low outgassing materials for vacuum |
Stem | 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 |
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.
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) |
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) |
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.
GUATANTEE:
SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.
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