Description
TECHNICAL DATA SHEET
Free Forged Throttling Valve / Choke Valve
Project / Equipment: High Pressure Throttling Valve
- BASIC VALVE INFORMATION
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Item
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Specification
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Valve Type
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Needle / Choke Type Throttling Valve (Globe pattern or Angle pattern)
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End Connection
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Flanged, Raised Face (RF)
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Body Manufacturing Process
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Open Die Forging (Free Forging)
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Nominal Size
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NPS 12 × 10 (DN300 × DN250)
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Port Reduction
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Inlet 12″, Internal seat bore reduced to 10″
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Pressure Class
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Class 600 (ASME B16.5)
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Body Material
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A105 (Carbon Steel)
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Service Medium
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Water / Oil / Gas / Steam (as per process)
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- APPLICABLE CODES & STANDARDS
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Standard
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Description
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API 6A
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Specification for Wellhead and Christmas Tree Equipment (if applicable to choke design)
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API 6D
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Specification for Pipeline and Piping Valves
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ASME B16.34
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Valve Flange, Threaded, and Welding End Dimensions
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ASME B16.5
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Pipe Flanges and Flanged Fittings (Class 600 RF)
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ASME B16.10
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Face-to-Face and End-to-End Dimensions of Valves
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API 598 / ISO 5208
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Valve Inspection and Testing
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ASTM A105 / ASME SA-105
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Forgings, Carbon Steel, for Piping Components
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- MATERIALS OF CONSTRUCTION
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Component
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Material
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Standard / Remarks
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Body
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A105
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Open die forged, normalized
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Bonnet / Cover
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A105
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Forged, bolted bonnet design
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Disc / Plug / Needle
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A105 + Hardfacing
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Stellite 6 / 13Cr – erosion resistant
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Seat Ring
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A105 + Hardfacing
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Integral or renewable, hardfaced sealing surface
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Stem
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A182 F6a (13Cr)
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Stainless steel, anti-galling
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Packing
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Flexible Graphite
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With Inconel wire reinforcement
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Gasket
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Spiral Wound
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304SS + Graphite
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Stud Bolts
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A193 B7
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High strength alloy steel
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Nuts
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A194 2H
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Carbon steel
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- DESIGN & PERFORMANCE CHARACTERISTICS
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Parameter
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Specification
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Pressure Class
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Class 600
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Max. Allowable Working Pressure
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Per ASME B16.34, A105 @ 38°C: ~ 1480 psi (102 bar)
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Design Temperature Range
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-29°C to +425°C (-20°F to +800°F)
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Flow Characteristic
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Linear / Equal Percentage
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Seat Leakage Rate
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Class IV or Class V per FCI 70-2 / IEC 60534
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Operation
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Handwheel / Gearbox / Actuator ready
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Flow Direction
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Flow over seat (preferred) or Flow under seat
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- DIMENSIONS & CONNECTIONS
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Item
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Dimension (inch / mm)
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Inlet Flange
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12″ Class 600 RF per ASME B16.5
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Outlet Flange
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12″ Class 600 RF per ASME B16.5
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Face-to-Face Length
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Per API 6D / ASME B16.10 or manufacturer standard
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Reduced Bore Diameter
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Corresponding to NPS 10 (approx. 10″ seat bore)
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Handwheel Diameter
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As per manufacturer
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Approx. Weight
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As per manufacturer
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- SPECIAL REQUIREMENTS & REMARKS
- Free Forging Process
Valve body shall be manufactured from open die forging using ingot or large billet.
Machining from bar stock or casting is NOT acceptable.
- Reduced Port Design
Flange size: NPS 12
Internal seat bore and throttling area: Equivalent to NPS 10
Designed for precise pressure and flow control.
- Hardfacing & Wear Resistance
Seat and disc contact surfaces shall be hardfaced with Stellite 6 or equivalent.
Minimum hardness after welding: 350–450 HB.
- Nondestructive Examination (NDE)
Body forging to be ultrasonically tested per ASTM A388.
Critical areas (seat, bore, welds) to be MT or PT examined.
- Compliance
Valve design, materials, and testing to fully comply with API 6A (if choke valve) and API 6D (pipeline valve) 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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