2″-900LB 2-Piece Cryogenic Floating Ball Valve

Size 2 inches (DN50)
Pressure Class Class 900 LB (PN150 / 2250 PSI)
Body Material Forged Stainless Steel – ASTM A182 F316
Manufacturing Process Forged Steel (Close Die Forged)
Design Standard API 608 / API 6D / ASME B16.34 / BS 6364 (Cryogenic)
End Connection Standard ASME B16.5 – RTJ Flanged (Ring Type Joint)
Face to Face Standard ASME B16.10 / API 6D
Test & Inspection Std. API 598 / BS 6364 (Cryogenic Test)
Fire-Safe Design API 607 / API 6FA (Optional)
Fugitive Emission ISO 15848-1 (Optional)

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TECHNICAL DATA SHEET

Product Name: 2-inch 900LB 2-Piece Cryogenic Floating Ball Valve
Model/Specification: 2″-900LB-CRYO-2PC-RTJ
밸브 유형: 2-Piece Floating Ball Valve (Cryogenic Service)
Connection Type: RTJ Flanged (Ring Type Joint) – ASME B16.5
본체 소재: Stainless Steel – ASTM A182 F316

Basic Design Parameters

매개변수	Standard/Specification
크기	2 inches (DN50)
Pressure Class	Class 900 LB (PN150 / 2250 PSI)
본체 재질	Forged Stainless Steel – ASTM A182 F316
Manufacturing Process	Forged Steel (Close Die Forged)
Design Standard	API 608 / API 6D / ASME B16.34 / BS 6364 (Cryogenic)
End Connection Standard	ASME B16.5 – RTJ Flanged (Ring Type Joint)
Face to Face Standard	ASME B16.10 / API 6D
Test & Inspection Std.	API 598 / BS 6364 (Cryogenic Test)
Fire-Safe Design	API 607 / API 6FA (Optional)
Fugitive Emission	ISO 15848-1 (Optional)

Technical Specifications

매개변수	Details
밸브 유형	2-Piece Floating Ball Valve, Bolted Body Construction
Body Type	Two-Piece Bolted Body with Side Entry
Bonnet Type	Extended Bonnet (for Cryogenic Service)
Service Temperature	-196°C to +120°C (with PCTFE seats) / Up to +200°C (with PEEK)
Applicable Media	LNG, LOX, LIN, LAr, Ethylene, LPG, and other cryogenic fluids
보어 유형	Full Bore (Standard) / Reduced Bore (Optional)
Ball Type	Floating Ball (pressure-assisted sealing)
Seat Type	PCTFE / PEEK (Cryogenic grade soft seats)
Sealing Principle	Upstream sealing – ball floats against downstream seat under pressure
작업	Lever Handle / Gearbox / Pneumatic Actuator / Electric Actuator
정전기 방지 장치	API 608 / API 6D Requirement (Standard) – Spring-loaded ball between ball and stem
Blow-Out Proof Stem	기준
Cavity Pressure Relief	Self-relieving seat design / Relief hole in ball
Bonnet Installation	Integral extended bonnet with drip plate (ice prevention)
Locking Device	Available for safety lockout

Material of Construction (F316 Stainless Steel)

Part Name	재료	Standard/Grade
Body (2 pieces)	Forged Stainless Steel – F316	ASTM A182 F316
End Connector (RTJ)	Forged Stainless Steel – F316	ASTM A182 F316
공	Stainless Steel – F316 (Hardened, Chrome plated optional)	ASTM A182 F316
줄기	Stainless Steel – F316 / 17-4PH	ASTM A182 F316 / 17-4PH
Seat Rings	PCTFE (KEL-F®) / PEEK	Cryogenic grade, self-relieving
Body Gasket	Spiral Wound	Stainless Steel + Graphite
Stem Seals / Packing	PCTFE / Flexible Graphite	Low temperature stable materials
Thrust Bearings	PTFE + Stainless Steel	Self-lubricating
정전기 방지 장치	Stainless Steel Ball + Spring	316 SS
Body Bolts/Nuts	Stainless Steel – B8 / 8	ASTM A193 B8 / A194 8
Drip Plate	Stainless Steel – F316	Welded to bonnet
Handle / Gear	Stainless Steel / Carbon Steel	With locking option

Main Dimensions & Connection Details

Note: Dimensions for 2″ Class 900 RTJ Flanged Cryogenic Ball Valve. Based on ASME B16.10, API 6D, and industry standards for cryogenic extended bonnet.

4.1 End-to-End Dimensions (Face-to-Face – RTJ)

크기	Pressure Class	L (RTJ) mm	L (RTJ) in	H (Open) mm	H (Open) in	W (Gear) mm	Weight (approx. kg)
2″	900LB	368	14.5	~450	~17.7	~350	~60-80

Note: Height (H) includes extended bonnet for cryogenic service. Weight depends on actuator/gearbox choice.

4.2 RTJ Flange Details (Per ASME B16.5 – Class 900)

매개변수	2″ RTJ Flange
Flange Diameter (OD)	215 mm (8.5 in)
Bolt Circle Diameter (PCD)	165.1 mm (6.5 in)
Number of Bolt Holes	8
Bolt Hole Diameter	25.4 mm (1.0 in)
Bolt Thread Size	7/8″ UNC
RTJ Groove Number	R-20 or RX-35 (per ASME B16.20)
Groove Depth	8.5 mm (0.33 in) approx.
Hub Diameter	127 mm (5.0 in)
Ring Gasket Material	Soft Iron / Stainless Steel (as per service)

4.3 Extended Bonnet (Cryogenic Feature)

Extension Length: Designed to keep stem packing above frost line (typically 200-300 mm for 2″ valve at -196°C).
Drip Plate: Included to prevent ice formation on body/bonnet joint.
Heat Transfer Design: Narrow clearance between stem and bonnet ID ensures packing near ambient temperature.
Material: F316 stainless steel (same as body).

Pressure-Temperature Rating (ASME B16.34 / Class 900)

*Material Group: Stainless Steel – ASTM A182 F316 with PCTFE/PEEK seats*

Temperature (°C)	Working Pressure (bar)	Working Pressure (psi)	노트
-196 to -46	150	2175	Cryogenic Range (BS 6364 certified)
-29 to 38	150	2175	Maximum Rating (Class 900)
50	148	2145
100	140	2030
150	132	1915	Max for PCTFE
200	124	1800	With PEEK seats

*Note: For cryogenic service (below -46°C), valves are tested and certified per BS 6364 at -196°C.*

Test Pressure (API 598 / BS 6364)

Test Type	Medium	Pressure (bar)	Pressure (psi)	Acceptance Criteria
Shell Test (Hydrostatic)	Water	225	3260	1.5 x 38°C Rating (no visible leakage)
High-Pressure Seat Test	Water	165	2390	1.1 x 38°C Rating (Zero leakage – soft seats)
Low-Pressure Seat Test	Air / N2	5.5 – 7.0	80 – 100	Bubble-tight
Cryogenic Seat Test	Helium / N2	@ Rated Pressure	@ Rated Pressure	Per BS 6364 at -196°C

Flow Characteristics (2″ – Full Bore)

매개변수	Value
Port Diameter (Full Bore)	~51 mm (2.0 in)
Flow Coefficient Cv (approx)	~150 – 200 (typical for 2″ full bore ball valve)
Flow Coefficient Kv (approx)	~130 – 170
Flow Characteristic	Quick Opening (On-Off)
Shut-off Class	API 598 / BS 6364 (Zero Leakage – Soft Seat)
보어 유형	Full Bore (minimal pressure drop)

Features & Applications

Key Features:

2-Piece Forged Body: Allows in-line maintenance of trim while providing robust, leak-free construction.
Cryogenic Service Capability: Designed for temperatures as low as -196°C (-320°F) , suitable for LNG, LOX, LIN, and other liquefied gases.
Extended Bonnet: Protects stem seals from extreme cold, ensuring operability and preventing ice formation.
Floating Ball Design: Ball floats against downstream seat, providing tight, bidirectional sealing.
RTJ Flanged Ends: Metal-to-metal ring joint seal for high-pressure and high-integrity applications.
No-Trap Cavity Design: Relief hole in ball or self-relieving seats prevents dangerous pressure buildup due to vaporization of trapped cryogenic liquid.
Anti-Static Device: Dissipates static charge, critical for flammable media like LNG.
Blow-out Proof Stem: Retained within body even if gland is removed.
Fire-Safe Design: Optional API 607 certification ensures sealing integrity in case of fire.
BS 6364 Certification: Designed and tested to international cryogenic valve standard.
NACE MR0175 Compliance: Optional for sour service (H₂S) environments.
Lockable Handle / Gear: Safety lockout capability for maintenance.

Main Applications:

LNG (Liquefied Natural Gas): Liquefaction, storage, transportation, and regasification plants.
Air Separation Units (ASU): Handling LOX, LIN, LAr.
Petrochemical: Ethylene, propylene, LPG, and other cryogenic hydrocarbons.
Industrial Gas: Cryogenic storage tanks and transfer lines.
Refrigeration Systems: Low-temperature industrial refrigeration.
High-Pressure Cryogenic Systems: Class 900 applications.

Comparison: 2-Piece vs. 3-Piece Design

Feature	2-Piece Construction	3-Piece Construction
Body Joints	One bolted joint (body to end cap)	Two bolted joints (end caps to center body)
In-Line Maintenance	Limited – requires removal from line for full trim access	Easy – end caps can be removed without taking valve out of line
Weight	Lighter	Slightly heavier
Cost	Lower	Higher
Typical Use	General purpose, cost-sensitive	High-maintenance, frequent cleaning applications

*For cryogenic service, 2-piece design offers reliable performance with fewer potential leak paths.*

Ordering Information

Please specify when ordering:

Valve size: 2″ (DN50)
Pressure class: 900LB
Body material: F316 (ASTM A182 F316)
End connections: RTJ Flanged (ASME B16.5)
Seat material: PCTFE / PEEK
Bore type: Full Bore (Standard)
Operation: Lever handle / Gearbox / Pneumatic actuator / Electric actuator
Special requirements: Fire-safe (API 607), NACE MR0175, oxygen cleaning, PMI testing
Certifications: Material Test Reports (EN 10204 3.1/3.2), BS 6364 cryogenic test certificate

*Disclaimer: The above data is prepared based on common industry standards (API 608, API 6D, ASME B16.34, BS 6364) for 2-piece cryogenic floating ball valves with RTJ ends . RTJ flanges provide reliable metal-to-metal sealing at high pressures and low temperatures. Specific dimensions may vary by manufacturer. The final technical agreement and certified drawings shall prevail.*

보증:

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