TECHNICAL DATA SHEET
Product: 2-Piece Cryogenic Ball Valve
Size: DN25 (1 inch)
Pressure Rating: PN16 (Class 150)
Body Material: F304 Stainless Steel (ASTM A182 F304)
Body Construction: 2-Piece, Floating Ball
Seat Type: Soft Seated (PCTFE / PEEK)
Parameter | Value |
Nominal Size | DN25 (1″) |
Pressure Rating | PN16 (Class 150) |
Valve Type | 2-Piece Floating Ball Valve |
Body Construction | 2-Piece (Body + End Cap) |
End Connections | Flanged (EN 1092‑1 PN16) / Threaded (ISO 7‑1 / NPT) / Socket Weld |
Temperature Range | –196°C ~ +80°C (for cryogenic service) |
Suitable Media | LNG (Liquefied Natural Gas), LPG, liquid nitrogen, liquid oxygen, liquid argon, ethylene, and other cryogenic fluids |
Fire Safe Design | API 607 / ISO 10497 (optional) |
Item | Part | Standard Material |
1 | Body | F304 (ASTM A182 F304) |
2 | End Cap | F304 |
3 | Ball | F304 + Chromium Plating / Chromium Carbide Coating (optional) |
4 | Seat Rings | PCTFE (Polychlorotrifluoroethylene) or PEEK(Polyetheretherketone) |
5 | Stem | F304 / 17-4PH |
6 | Stem Packing | PCTFE / PTFE (low‑temperature grade) or Flexible Graphite |
7 | Body Gasket | Spiral Wound, F304 + PCTFE / PTFE / Graphite |
8 | Bolting | A193 B8 / A194 B8 (304 stainless steel) |
9 | Extended Bonnet | F304 (provides thermal isolation) |
10 | Handle / Operator | Stainless Steel or Carbon Steel with insulation (optional) |
*Note: PCTFE is preferred for cryogenic applications down to –196°C due to its excellent low-temperature sealing properties; PEEK is suitable for higher-pressure cryogenic applications with good wear resistance.*
Seat Material | Temperature Range | Characteristics | Typical Application |
PCTFE | –196°C ~ +80°C | Excellent low-temperature sealing, low permeability, good dimensional stability | LNG, liquid oxygen, liquid nitrogen |
PEEK | –196°C ~ +250°C | Higher mechanical strength, wear resistance, suitable for higher pressures | High-pressure cryogenic, cycling service |
PTFE (Not Recommended) | –196°C ~ +80°C | Prone to cold flow and deformation at cryogenic temperatures; not preferred for critical cryogenic service | General purpose only |
Parameter | Value |
Face‑to‑Face Length (L) | ~120 mm (flanged per EN 558) / ~80 mm (threaded) |
Extended Bonnet Height | ~100 – 150 mm (to ensure proper thermal gradient) |
End Connections | Flanged – EN 1092‑1 PN16 (RF / FF) / Threaded (ISO 7‑1 / NPT) |
Flange Facing (if flanged) | Raised Face (RF) or Flat Face (FF) |
Top Height (H) | ~160 – 200 mm (with handle) |
Operating Torque | ~10 – 25 N·m (soft seated, floating ball) |
Approx. Weight | ~3 – 5 kg (flanged version) / ~1.5 – 2.5 kg (threaded version) |
Note: Final dimensions to be confirmed by manufacturing drawings.
Item | Standard |
Design & Manufacture | ASME B16.34 / EN 12516 / API 608 |
Flanged End Connections | EN 1092‑1 / ASME B16.5 |
Threaded End Connections | ISO 7‑1 (BSP) / ASME B1.20.1 (NPT) |
Pressure‑Temperature Rating | ASME B16.34 / EN 1092‑1 |
Fire Safe Test | API 607 / ISO 10497 (optional) |
Cryogenic Testing | BS 6364 (or customer specification) |
Pressure Testing | API 598 or ISO 5208 |
Low‑Pressure Air Test | 0.6 MPa (6 bar) – bubble‑tight (zero leakage) |
High‑Pressure Hydrostatic Test | 1.5 × rated pressure (body), 1.1 × rated pressure (seat) |
Consideration | Requirement |
Material Toughness | Materials must pass Charpy impact tests at service temperature (e.g., –196°C for F304) |
Extended Bonnet | Minimum height ensures packing temperature remains above freezing point of moisture in the air |
Seat Material | PCTFE or PEEK required for reliable low-temperature sealing; PTFE is not recommended due to cold flow |
Leakage Rate | Cryogenic valves typically require bubble‑tight shut‑off (helium leak testing often specified) |
Thermal Cycling | Valve design must accommodate thermal contraction and expansion without loss of sealing |
Packing | Low‑temperature packing (e.g., PCTFE or PTFE) must be used to maintain seal flexibility |
Anti-Static | Essential to prevent static discharge in flammable cryogenic services |
When ordering, please specify:
This data sheet reflects the DN25 – PN16 2-Piece Cryogenic Ball Valve with F304 material and PCTFE / PEEK seats. For specific dimensions, torque curves, or actuator sizing support, please contact us with your detailed requirements.
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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