1″-800LB-Nipples 3 Piece Vacuum Ball Valve

1″-800LB-Nipples 3 Piece Vacuum Ball Valve

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)

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Technical Data Sheet

Product: 3-Piece Vacuum Ball Valve with Nipples
Model / Size: 1″ – 800LB – Nipples
Configurazione: Three-piece body construction with integral nipples (socket weld or butt weld ends) for vacuum service

  1. 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.

  1. Basic Parameters

Item

Parametro

Dimensione nominale

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

Costruzione del corpo

3-Piece (center body with two end caps)

Tipo di valvola

Floating ball, full port or reduced port (as specified)

Stem Sealing

Live-loaded packing or PTFE/stainless steel bellows (for vacuum service)

Operazione

Lever handle (standard), gear operator, or actuator (optional)

Vacuum Rating

Suitable for high vacuum (1×10⁻⁶ Torr and above)

  1. Standard di progettazione

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)

  1. Bill of Materials (Typical Configuration)

Part Name

Material (Typical Options)

Osservazioni

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

Palla

A182 F316 / A182 F304

Chrome plated or electropolished for vacuum service

Seats

PTFE / Reinforced PTFE / PEEK

Low outgassing materials for vacuum

Stelo

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

  1. 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.

  1. Operating Conditions

Item

Parametro

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)

  1. 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)

  1. Features & Benefits
  1. Vacuum Service Optimized: Low outgassing materials, helium leak-tested, and precision-machined components ensure high vacuum integrity.
  2. Three-Piece Construction: Allows for in-line maintenance – end caps can be removed to access ball and seats without disturbing pipe connections.
  3. Integral Nipples: Pre-welded or integrally formed nipples simplify field installation, reducing welding points and potential leak paths.
  4. High Pressure Capability: Class 800 rating suitable for high-pressure gas and liquid systems, including hydraulic and pneumatic applications.
  5. Tight Shut-Off: PTFE or PEEK seats provide zero-leakage sealing in both directions.
  6. Low Operating Torque: Smooth ball and seat surfaces ensure easy operation, even under differential pressure.
  7. Locking Handle (Optional): Prevents unauthorized operation – essential for safety-critical systems.
  8. Fugitive Emission Compliance: Stem sealing can be designed to meet ISO 15848 or TA-Luft standards.
  1. 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 MR0175oxygen cleaninghigh-temperature bellows seal, or actuator mounting, please let me know and I can supplement the data sheet accordingly.

GARANZIA:

SAVVY VALVES si impegna a fornire una qualità di prodotto eccezionale e un servizio post-vendita senza pensieri. Le nostre valvole sono garantite per una durata minima di 12 mesi, durante i quali forniremo gratuitamente tutti i pezzi di ricambio necessari e istruzioni di manutenzione dettagliate. Durante il periodo di garanzia, in caso di danni non causati dall'uomo, sostituiremo i componenti gratuitamente e forniremo supporto tecnico professionale. Dopo la scadenza della garanzia, i clienti dovranno pagare solo il costo dei pezzi di ricambio, beneficiando comunque di servizi di manutenzione scontati. Il nostro obiettivo è aiutare i clienti a ridurre i costi operativi e a migliorare l'efficienza produttiva attraverso una qualità affidabile e un supporto post-vendita completo. Che si tratti di richieste tecniche o di esigenze di manutenzione, il nostro team di esperti risponderà tempestivamente per garantire che il vostro sistema di valvole mantenga prestazioni ottimali in ogni momento.

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