1-1/2"-300LB-BW Cryogenic Bellows Seal Globe Valve
1-1/2"-300LB-BW Cryogenic Bellows Seal Globe Valve - Image 2
1-1/2"-300LB-BW Cryogenic Bellows Seal Globe Valve - Image 3
1-1/2"-300LB-BW Cryogenic Bellows Seal Globe Valve - Image 4

1-1/2″-300LB-BW Cryogenic Bellows Seal Globe Valve

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Description

Technical Datasheet

Product Name: Cryogenic Bellows Seal Globe Valve
Model: 1-1/2″-300LB BW Cryogenic Bellows Seal Globe Valve

1. General Information

Item Specification
Valve Type Globe Valve (OS&Y, Rising Stem)
Nominal Size 1-1/2 inches (DN40)
Pressure Rating Class 300
Connection Type Butt Weld (BW) Ends
Special Design Bellows Seal + Cryogenic Service (Extended Bonnet)
Body / Bonnet Material Stainless Steel (Typically CF8/304 or CF8M/316) For cryogenic service
Operation Handwheel (Manual) / Gearbox optional

2. Technical Specifications

Item Specification
Pressure Rating Class 300 (PN50)
Shell Test Pressure 7.5 MPa (approx. 1110 psi)
Seal Test Pressure 5.5 MPa (approx. 800 psi)
Design Temperature -196°C to +150°C (Suitable for LNG, LPG, Liquid Nitrogen, Oxygen, etc.)
Applicable Media Cryogenic Fluids: LNG (Liquefied Natural Gas), LPG, Liquid Oxygen, Liquid Nitrogen, Ethylene, etc.
Bonnet Type Extended Bonnet (Long neck design to protect packing from freezing and ensure proper stem sealing)

3. Main Material of Parts

Part Name Material Material Grade (Reference)
Body Stainless Steel ASTM A351 CF8 (304) or CF8M (316)
Bonnet (Extended) Stainless Steel ASTM A351 CF8 (304) or CF8M (316)
Disc / Plug Stainless Steel + Hard-facing 304 / 316 + Stellite 6 (or 17-4PH optional)
Stem Stainless Steel ASTM A276 304 / 316 / 17-4PH
Bellows Assembly Stainless Steel ASTM A240 304 / 316L (Multi-ply, fully welded)
Seat Ring (Sealing) Stainless Steel / Hard-facing 304 / 316 / Stellite (Integral or welded)
Gland Packing Low-Temperature Graphite / PTFE –
Gasket Spiral Wound 304SS + Flexible Graphite
Handwheel Cast Iron / Carbon Steel –

4. Main Dimensions & Connection Data (Unit: mm)

Note: Butt weld ends conform to ASME B16.25.

Size (NPS) End Type Wall Thickness Schedule Face to Face (End to End) (L) Extended Bonnet Height (H) approx. Handwheel Dia (W) approx.
1-1/2″ (DN40) Butt Weld (BW) Schedule 40 / 80 (as per order) ASME B16.10: 247 mm (Typical) Varies by design (Long neck for cryogenic insulation) Varies by design

Note: Dimensions above are typical. Extended bonnet height is designed to accommodate insulation thickness and protect packing from low temperatures.

5. Applicable Design Standards

  • Design & Manufacture: BS 6364 (Specification for Valves for Cryogenic Service) / API 623 (Globe Valves) / ASME B16.34

  • Face-to-Face Dimensions: ASME B16.10

  • End Connections: ASME B16.25 (Butt Weld Ends)

  • Pressure-Temperature Rating: ASME B16.34

  • Inspection & Testing: BS 6364 / API 598 (Cryogenic testing at -196°C required)

  • Bellows Design: ISO 15761 / BS 6364

6. Product Features

  1. Cryogenic Service Design: Compliant with BS 6364, specifically engineered for low-temperature applications down to -196°C.

  2. Extended Bonnet: Long neck design isolates the packing gland from the cryogenic media, ensuring packing remains at ambient temperature for reliable sealing and preventing ice formation on the stem.

  3. Bellows Seal: Fully welded stainless steel bellows provides a hermetic seal, eliminating fugitive emissions and ensuring zero stem leakage—critical for cryogenic and hazardous media.

  4. Hardened Trim: Stellite hard-facing on seat and disc surfaces provides excellent wear resistance and tight shut-off under cryogenic conditions.

  5. Butt Weld Ends: Provides a permanent, leak-free connection suitable for high-integrity cryogenic piping systems.

  6. Drip Ring / Frost Break: Typically provided at the bottom of the extended bonnet to prevent condensation from reaching the valve body insulation.

  7. Cryogenic Testing: Valves are 100% tested with liquid nitrogen at -196°C to verify seat and shell integrity under actual service conditions.

Remarks:

  • Material Selection: For cryogenic service, austenitic stainless steel (CF8/304 or CF8M/316) is mandatory due to its ductility and impact resistance at low temperatures. Carbon steel is notsuitable for cryogenic applications.

  • Cryogenic Testing: Confirm with the manufacturer that cryogenic testing (BS 6364) is included as part of the inspection and test plan.

  • Insulation: The extended bonnet length should accommodate the required insulation thickness for the specific cryogenic application.

  • For specific dimensional data and torque values, please refer to the official certified drawings from the manufacturer.

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