TECHNICAL DATA SHEET
Product: Lift Check Valve
Rozmiar: 2 inch (DN50)
Klasa ciśnienia: Class 2500
Materiał korpusu: Inconel 625 (UNS N06625)
End Connections: Flanged – ASME B16.5 Class 2500
Design: Lift Check (Piston Type)
- Basic Specifications
Parametr | Value |
Rozmiar nominalny | 2″ (DN50) |
Ocena ciśnienia | Class 2500 (PN 420) |
Typ zaworu | Lift Check Valve – Automatic Non‑Return |
Budowa nadwozia | Pressure Seal Bonnet (recommended for Class 2500) |
End Connections | Flanged – ASME B16.5 Class 2500, Ring Type Joint (RTJ) facing standard |
Temperature Range | –196°C ~ +650°C (depending on trim) |
Suitable Media | Sour gas, seawater, high‑pressure steam, superheated water, corrosive chemicals, acidic environments |
Flow Direction | Horizontal (preferred) or vertical with upward flow |
- Main Features
- Lift Check Design: Disc lifts vertically off the seat under forward flow and drops back when flow reverses, providing reliable backflow prevention.
- Inconel 625 Construction: Full Inconel 625 body and trim offer exceptional resistance to pitting, crevice corrosion, stress corrosion cracking, and high‑temperature oxidation. Ideal for sour service (NACE MR0175), seawater, and aggressive chemical environments.
- High‑Pressure Capability: Class 2500 rating with flanged ends suitable for ultra‑high‑pressure systems.
- Pressure Seal Bonnet: Ensures leak‑tight performance under fluctuating high temperatures and pressures.
- Renewable Seat & Disc: Seat and disc hardfaced with Stellite 21 for extended service life and ease of maintenance.
- Compact Design: Lift check valves offer a shorter face‑to‑face length compared to swing check valves.
- Material List (Specified Configuration)
Item | Part | Material |
1 | Ciało | Inconel 625 (UNS N06625) |
2 | Bonnet | Inconel 625 (UNS N06625) |
3 | Disc (Piston) | Inconel 625 + Stellite 21 Hardfacing (seat contact surface) |
4 | Seat Ring | Inconel 625 + Stellite 21 Hardfacing |
5 | Stem / Guide | Inconel 625 |
6 | Spring (if applicable) | Inconel 718 / Inconel X‑750 |
7 | Bonnet Gasket | Spiral Wound, Inconel 625 + Graphite |
8 | Bolting | ASTM A453 Grade 660 (or Inconel 718) |
Note: Full Inconel 625 construction avoids galvanic corrosion issues common with dissimilar materials.
- Dimensions & Structural Data (Flanged Ends)
Parametr | Value |
Face‑to‑Face Length (L) | ~305 – 340 mm (per ASME B16.10 for Class 2500 lift check) |
Flange Standard | ASME B16.5 Class 2500 |
Flange Facing | Ring Type Joint (RTJ) – standard for Class 2500 |
Flange Outside Diameter | ~235 mm (approx.) |
Bolt Circle Diameter | ~190 mm (approx.) |
Number of Bolts | 8 (studs) |
Approx. Weight | ~95 – 125 kg (flanged version) |
Bonnet Type | Pressure Seal |
Note: Final dimensions to be confirmed by manufacturing drawings.
- Design & Testing Standards
Item | Standard |
Design & Manufacture | ASME B16.34, API 6D (where applicable) |
Flanged End Connections | ASME B16.5 Class 2500 |
Pressure‑Temperature Rating | ASME B16.34 |
NACE Compliance | NACE MR0175 / ISO 15156 (for sour service) |
Pressure Testing | API 598 or ISO 5208 |
Low‑Pressure Air Test | 0.6 MPa (6 bar) – no visible leakage |
High‑Pressure Hydrostatic Test | 1.5 × rated pressure (body), 1.1 × rated pressure (seat) |
- Inconel 625 Material Advantages
Property | Benefit |
Corrosion Resistance | Excellent resistance to seawater, chlorides, sour gas (H₂S), and mineral acids |
High‑Temperature Strength | Maintains mechanical properties up to 650°C |
Oxidation Resistance | Resists scaling and oxidation in high‑temperature environments |
Fatigue Resistance | Superior resistance to thermal fatigue and cyclic loading |
- Operating Guidelines
- Orientation: Lift check valves are typically installed in horizontal pipelines with the bonnet vertical, or in vertical lines with flow upward.
- Cracking Pressure: Standard cracking pressure is typically 0.5 – 1.0 psi (0.03 – 0.07 bar). Spring‑assisted designs are available for vertical installation or low‑pressure applications.
- Flow Characteristics: Minimal pressure drop when fully open, as the disc lifts completely out of the flow path.
- Typical Applications
- Subsea & Offshore: High‑pressure subsea manifolds, Christmas trees, and topside piping in seawater service.
- Sour Service: Oil & gas production with high H₂S and CO₂ content (NACE MR0175 compliance).
- Nuclear Power: High‑temperature steam and feedwater systems.
- Chemical Processing: Corrosive chemical plants handling acids, chlorides, and high‑temperature fluids.
- Hydrogen Service: High‑pressure hydrogen systems requiring nickel alloy construction to prevent hydrogen embrittlement.
- Ordering Information
When ordering, please specify:
- Size & Pressure Class: 2″ – Class 2500
- Body Material: Inconel 625
- End Connections: Flanged (RTJ) – ASME B16.5 Class 2500
- Bonnet Type: Pressure Seal
- Optional Features: Spring‑assisted disc (for vertical or low‑pressure applications)
This data sheet reflects the flanged connection configuration. For butt weld ends or additional customizations, please contact us with your specific requirements.
GWARANCJA:
SAVVY VALVES zobowiązuje się do dostarczania wyjątkowej jakości produktów i bezproblemowej obsługi posprzedażowej. Gwarantujemy, że nasze zawory zapewnią minimalny okres eksploatacji wynoszący 12 miesięcy, podczas którego dostarczymy bezpłatnie wszystkie niezbędne części zamienne i szczegółowe instrukcje dotyczące konserwacji. W okresie gwarancyjnym, jeśli wystąpią jakiekolwiek uszkodzenia niespowodowane przez człowieka, wymienimy komponenty bezpłatnie i zapewnimy profesjonalne wsparcie techniczne. Po wygaśnięciu gwarancji klienci muszą zapłacić jedynie za koszt części zamiennych, nadal korzystając z usług konserwacyjnych po obniżonych cenach. Naszym celem jest pomoc klientom w obniżeniu kosztów operacyjnych i zwiększeniu wydajności produkcji dzięki niezawodnej jakości i kompleksowemu wsparciu posprzedażowemu. Niezależnie od tego, czy chodzi o zapytania techniczne, czy potrzeby konserwacyjne, nasz zespół ekspertów odpowie szybko, aby zapewnić, że Twój system zaworów zawsze będzie utrzymywał optymalną wydajność.