3-Piece Open Die Forged Cryogenic Ball Valve

Item Specification
Valve Type Floating Ball Valve, 3-Piece Split Body, Side-Entry, Anti-Static, Anti-Blowout Stem
Size Range DN15 – DN300 (½” to 12″)
Pressure Rating Class 150 / 300 / 600 (PN16 – PN100)
End Connection Flanged Ends (Raised Face / RTJ) per ASME B16.5
Design Standard BS 6364 / ISO 28921-1 / MSS SP-134 / ASME B16.34 / API 6D
Face to Face Standard ASME B16.10 / ISO 5752 / BS 6364 Table 1
Test Standard API 598 / API 6D / BS 6364
Service LNG, LO2, LN2, LAr, Ethylene, Methane, Cryogenic Industrial Gases
Temperature Range -196°C to +80°C (-320°F to +176°F)
Bore Type Full Bore / Reduced Bore (Specify)

Contáctenos

Descripción

TECHNICAL DATA SHEET

Cryogenic Floating Ball Valve (3-Piece, Flanged Ends, Stainless Steel)

General Information

Item	Especificación
Tipo de válvula	Floating Ball Valve, 3-Piece Split Body, Side-Entry, Anti-Static, Anti-Blowout Stem
Size Range	DN15 – DN300 (½” to 12″)
Clasificación de presión	Class 150 / 300 / 600 (PN16 – PN100)
End Connection	Flanged Ends (Raised Face / RTJ) per ASME B16.5
Design Standard	BS 6364 / ISO 28921-1 / MSS SP-134 / ASME B16.34 / API 6D
Face to Face Standard	ASME B16.10 / ISO 5752 / BS 6364 Table 1
Test Standard	API 598 / API 6D / BS 6364
Service	LNG, LO2, LN2, LAr, Ethylene, Methane, Cryogenic Industrial Gases
Temperature Range	-196°C to +80°C (-320°F to +176°F)
Tipo de orificio	Full Bore / Reduced Bore (Specify)

Bill of Materials (Materials of Construction)

Part Name	Qty.	Material	Material Specification / Notes
Body Halves	2	Stainless Steel	ASTM A182 F304/F304L (Forged) or ASTM A351 CF8/CF3 (Cast)
Pelota	1	Stainless Steel	ASTM A182 F304/F316 (Forged), Chrome Plated / Surface Ra ≤ 0.4µm
Provenir	1	Stainless Steel	ASTM A182 F304/F316, Anti-Blowout Design
Seat (Downstream)	1	PCTFE / RPTFE	Spring-Energized PCTFE (Preferred for -196℃) or Glass-Filled RPTFE
Seat (Upstream)	1	PCTFE / RPTFE	Optional Bidirectional Design
Stem Seals / Packing	Set	PTFE + Graphite	Live-Loaded Packing (Belleville Springs) at Ambient Zone
Body Gasket	2	PTFE / Spiral Wound	PTFE or SS+Graphite Spiral Wound
Body Bolts & Nuts	Set	Stainless Steel	ASTM A193 B8M (Bolts) / ASTM A194 8M (Nuts)
Thrust Washer / Bearing	1	PTFE / Reinforced PTFE	Reduces operating torque
Dispositivo antiestático	1	Stainless Steel	Ball-to-Stem / Stem-to-Body
Stop / Locking Device	1	Stainless Steel	Optional for safety
Name Plate	1	Stainless Steel	MSS SP-25 marking

Material Specifications & Rationale

Componente	Material	Rationale
Body & Bonnet	A182 F304/F316 / A351 CF8/CF8M	Austenitic stainless steel retains ductility and impact toughness at -196°C. F304L/CF3 grades offer enhanced resistance to intergranular corrosion after welding. All components undergo cryogenic stabilization treatment per BS 6364 .
Pelota	A182 F304/F316	Hard chrome plating or electroless nickel coating improves surface hardness (Ra ≤ 0.4µm) and ensures low friction against PCTFE seat .
Asiento	PCTFE (Spring-Energized)	PCTFE (Poly-chloro-tri-fluoro-ethylene) maintains dimensional stability and resilience at -196°C. Spring-energized design ensures bubble-tight shut-off even at low differential pressures .
Stem Seals	PTFE + Graphite	Extended bonnet positions packing away from cold zone; live-loading compensates for thermal cycles and prevents fugitive emissions .

Cryogenic Design Features

Feature	Descripción	Benefit
Extended Bonnet	Length per BS 6364 (e.g., 250mm for DN50) keeps stem packing at ambient temperature .	Prevents ice formation on packing; ensures reliable stem sealing and operation.
Pressure Relief Hole	Upstream-side hole in ball prevents cavity pressure buildup during warm-up .	Eliminates risk of cavity over-pressurization and seat damage.
Dispositivo antiestático	Springs/plungers ensure electrical continuity between ball, stem, and body .	Prevents static charge accumulation in flammable cryogenic services.
Blowout-Proof Stem	Stem retained internally by shoulder or retaining ring .	Safety critical: prevents stem ejection under pressure.
Cryogenic Treatment	All pressure-containing parts thermally cycled to -196°C .	Stabilizes microstructure; ensures dimensional stability in service.

Dimensional Data (Reference – Flanged Type)

*Note: Dimensions vary by manufacturer, pressure class, and extension length. Below are typical values based on ASME B16.10 / BS 6364 .*

Tamaño	Face-to-Face (L)	Extension Length (E)	Height Open (H)	Handwheel Dia. (D)	Bolt Circle Dia.	No. of Holes
DN15 (½”)	108 mm	180 mm	210 mm	100 mm	60.5 mm (2.38″)	4
DN25 (1″)	127 mm	200 mm	240 mm	125 mm	79.4 mm (3.12″)	4
DN50 (2″)	178 mm	250 mm	310 mm	200 mm	120.7 mm (4.75″)	4
DN80 (3″)	203 mm	280 mm	370 mm	250 mm	152.4 mm (6.00″)	4
DN100 (4″)	229 mm	320 mm	440 mm	315 mm	190.5 mm (7.50″)	8
DN150 (6″)	394 mm	400 mm	570 mm	400 mm	241.3 mm (9.50″)	8
DN200 (8″)	457 mm	450 mm	680 mm	500 mm	298.5 mm (11.75″)	8

Flange Details: Raised Face (RF) per ASME B16.5. For RTJ (Ring Type Joint) or BW (Butt Weld) ends, specify separately .

Performance & Testing (Per API 598 / BS 6364)

Test	Medium	Pressure / Condition	Acceptance Criteria
Shell (Body) Test	Water / Nitrogen	1.5 x Rated Pressure @ Ambient	No visible leakage
Seat (Seal) Test	Air / Nitrogen	1.1 x Rated Pressure @ Ambient	ISO 5208 Class VI (Bubble-tight)
Cryogenic Seat Test	Liquid Nitrogen	@ -196°C, 1.1 x Rated Pressure	≤ 0.1 Nm³/hr (He) per BS 6364 Annex A
Low Pressure Seat Test	Air	0.6 MPa (87 psi)	Bubble-tight
Stem Leakage Test	Helium	@ Ambient	ISO 15848-1 Class B (≤10⁻⁵ mbar·L/s)
Cavity Relief Test	–	Verify ball hole functions	Pressure relief to upstream side

Typical Test Pressures (Class 300 Example):

Shell Test: 7.7 MPa (1,117 psi)
Seat Test: 5.6 MPa (812 psi)

Operating Torque & Actuation

Tamaño	Torque @ Ambient (Nm)	Torque @ -196°C (Nm)	Recommended Operator
DN15 (½”)	8	12	Palanca
DN25 (1″)	15	22	Palanca
DN50 (2″)	45	68	Lever / Gear
DN80 (3″)	90	135	Gear
DN100 (4″)	160	240	Gear
DN150 (6″)	350	525	Gear / Actuator
DN200 (8″)	600	900	Gear / Actuator

Note: Torque values increase at cryogenic temperatures due to material contraction and seal compression . For actuated valves, specify pneumatic/electric/hydraulic actuator separately .

Flow Characteristics (Full Bore)

Tamaño	Flow Coefficient Cv (US gal/min)	Kv (m³/h)
DN15 (½”)	8 – 12	7 – 10
DN25 (1″)	30 – 40	26 – 35
DN50 (2″)	120 – 150	104 – 130
DN80 (3″)	280 – 320	242 – 277
DN100 (4″)	480 – 550	415 – 476
DN150 (6″)	1,100 – 1,300	952 – 1,125
DN200 (8″)	2,000 – 2,300	1,730 – 1,990

*Note: Reduced bore valves have lower Cv values (typically 60-80% of full bore).*

Application Guidelines

Suitable Media:

LNG (Liquefied Natural Gas), Methane, Ethane, Ethylene
LO2 (Liquid Oxygen), LN2 (Liquid Nitrogen), LAr (Liquid Argon)
Liquid Hydrogen (with special material considerations)

Not Suitable For:

Media containing solid particles (may damage PCTFE seat)
High-temperature service >80°C (soft-seal degradation)
Fire-safe applications without special design (not API 607 compliant by default)

Installation Orientation: Any position (preferably stem vertical for extended bonnet applications)
Dirección del flujo: Bidirectional (with appropriate seat design)

Special Requirements for Cryogenic Service

Requirement	Especificación
Oxygen Service Cleaning	If service is LOX or oxygen-enriched, valve must be cleaned and packaged per CGA G-4.1 with special packaging to maintain cleanliness .
Material Traceability	Full traceability per EN 10204 Type 3.1 required for all pressure-containing parts .
Impact Testing	Charpy V-Notch impact tests at -196°C per ASTM A370 (minimum 41J average) .
PMI Testing	100% Positive Material Identification verification for all alloy components .
Cryogenic Cycle Testing	Optional: 200+ thermal cycles between ambient and -196°C to validate long-term performance.
Vacuum Jacket Compatibility	Extended bonnet length must match insulation thickness for cold box applications.

Marking & Documentation

Marking: Per MSS SP-25 (Size, Pressure Class, Material, Manufacturer’s Logo, Heat No., Cryogenic Rating, CE/PED if applicable)
Documents:

Material Test Certificates (EN 10204 3.1)
Pressure Test Report (Ambient + Cryogenic)
Certified Dimensional Drawing
Cleaning & Degreasing Certificate (if oxygen service)
NDE Reports (RT/PT/MT as required)

Procurement Notes

Clase de presión: Confirm required class (150LB / 300LB / 600LB) based on design pressure and temperature derating per ASME B16.34 .
Bore Type: Specify Full Bore (for minimum pressure drop) or Reduced Bore (for cost/weight savings) .
Seat Material: Confirm preference:

PCTFE: Better dimensional stability, preferred for cycling service at -196°C
RPTFE/PTFE: Lower cost, suitable for less demanding applications

Extension Length: Specify if valve will be installed in vacuum-jacketed or cold box applications (custom extension length may be required).

Actuación: If actuated (pneumatic/electric), provide torque requirements and control signal specifications .

Special Cleaning: Specify if oxygen service cleaning is required (CGA G-4.1) .

Fire-Safe Design: If fire-safe certification (API 607) is required, confirm with manufacturer as standard soft-seat designs are not fire-safe .

This technical data sheet complies with BS 6364, ASME B16.34, and API 6D requirements for cryogenic floating ball valves

GARANTÍA:

SAVVY VALVES se compromete a ofrecer una calidad de producto excepcional y un servicio posventa sin complicaciones. Nuestras válvulas tienen una vida útil mínima garantizada de 12 meses, durante los cuales suministraremos todos los repuestos necesarios e instrucciones detalladas de mantenimiento de forma gratuita. Durante el período de garantía, si se produce algún daño no provocado por el hombre, reemplazaremos los componentes sin coste alguno y ofreceremos soporte técnico profesional. Una vez vencida la garantía, los clientes solo deberán pagar el coste de los repuestos y seguirán beneficiándose de descuentos en los servicios de mantenimiento. Nuestro objetivo es ayudar a los clientes a reducir los costes operativos y mejorar la eficiencia de la producción mediante una calidad fiable y un soporte posventa integral. Ya sea para consultas técnicas o necesidades de mantenimiento, nuestro equipo de expertos responderá con prontitud para garantizar que su sistema de válvulas mantenga un rendimiento óptimo en todo momento.

PRODUCTOS EN VENTA CALIENTE

Durante más de 10 años, hemos sido un proveedor líder de válvulas industriales para importantes proyectos globales en suministro de agua, petróleo y gas y desalinización.

Noticias

El último noticias

Spanish