Description
API 602 Forged Steel Globe Valve Technical Data Sheet
A105N Material 1/2″ 800LB NPT/Welded Ends
- General Information
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Item
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Specification
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Valve Type
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Forged Steel Globe Valve
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Design Standard
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API 602 / ASME B16.34 / BS 5352
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Nominal Size
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1/2 inch (DN15)
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Pressure Class
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Class 800 LB (PN130)
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Structure Type
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OS&Y (Outside Screw and Yoke), Bolted Bonnet
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Connection Type
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NPT Threaded (ASME B1.20.1) or Socket Weld (ASME B16.11)
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Operation
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Handwheel
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Body Material
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ASTM A105N (Forged Carbon Steel, Normalized, suitable for NACE MR0175)
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- Applicable Standards
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Item
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Standard Code
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Design & Manufacturing
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API 602, ASME B16.34, BS 5352
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Face-to-Face / End-to-End
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Manufacturer Standard / ASME B16.10
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Socket Weld Ends
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ASME B16.11
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Threaded Ends
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ASME B1.20.1 (NPT)
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Test & Inspection
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API 598
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Pressure-Temperature Rating
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ASME B16.34
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Valve Marking
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MSS SP-25
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- Main Design Features
- Body Construction: One-piece die forged body, dense structure, high strength, eliminates casting defects
- Bonnet Connection: Bolted bonnet design with 304/flexible graphite spiral wound gasket sealing
- Disc Design: Renewable disc type, hardfaced seating surface for durability
- Stem Design: Backseat feature allows packing replacement under pressure when valve is fully open
- Operating Characteristics: Disc moves linearly along seat centerline, short stroke, reliable shut-off
- Flow Direction: Flow below seat design, reducing operating torque and protecting packing
- Packing: Flexible graphite packing, low emission design
- Seat: Renewable seat rings or integral hardfacing
- Main Component Materials (A105N Material)
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Item
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Part Name
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Material
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Standard/Remark
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1
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Body
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ASTM A105N
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Forged Carbon Steel, Normalized
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2
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Bonnet
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ASTM A105N
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Forged Carbon Steel
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3
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Disc
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ASTM A276 410 / A105N+STL
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13Cr Stainless Steel or Hardfaced
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4
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Seat Ring
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ASTM A276 410 / STL Hardfaced
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Hardened Stainless Steel, Renewable or Integral
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5
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Stem
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ASTM A182 F6a (13Cr)
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Stainless Steel
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6
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Gasket
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304 + Flexible Graphite
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Spiral Wound
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7
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Packing
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Flexible Graphite
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Low emission design
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8
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Gland Bushing
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ASTM A276 410
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Stainless Steel
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9
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Gland Flange
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ASTM A105
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Carbon Steel
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10
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Bonnet Bolt
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ASTM A193 Gr.B7
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Alloy Steel
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11
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Bonnet Nut
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ASTM A194 Gr.2H
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Heavy Hex Nut
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12
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Eye Bolt
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ASTM A193 Gr.B7
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Alloy Steel
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13
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Handwheel
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ASTM A197
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Malleable Cast Iron
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- Technical Parameters & Dimensions
5.1 Pressure-Temperature Ratings
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Item
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Parameter
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Nominal Pressure
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Class 800 LB (PN130)
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Shell Test Pressure
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20.0 MPa (Hydrostatic) [API 598]
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High-Pressure Seat Test Pressure
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14.8 MPa (Hydrostatic) [API 598]
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Low-Pressure Pneumatic Test Pressure
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0.5 – 0.7 MPa (Air) [API 598]
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Temperature Range
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-29°C ~ 425°C
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Applicable Media
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Water, steam, oil, etc.
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5.2 Dimensions (1/2″ Class 800 NPT/Socket Weld)
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Dimension
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Value
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Remark
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End-to-End Length (L)
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79 mm
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For NPT/SW ends, typical API 602 value
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Height (H-OPEN)
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Approx. 157 mm
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Fully open position, reference
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Handwheel Diameter (W)
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100 mm
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Reference
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Socket Weld Bore (B)
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22.2 mm
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Socket weld inner diameter
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Socket Weld Depth (S)
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10 mm
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Minimum socket depth
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Threaded End
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1/2″ NPT
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Per ASME B1.20.1
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Weight
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Approx. 1.6 kg
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Bolted bonnet type, reference
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5.3 End Connection Details
- NPT Threaded Ends: Per ASME B1.20.1, 1/2 inch American Standard Taper Pipe Thread
- Socket Weld Ends (SW): Per ASME B16.11, bore dia 22.2mm, socket depth 10mm
- Flow Direction: Flow direction arrow marking on body (flow below seat)
- Test & Inspection (API 598)
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Test Item
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Test Pressure
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Medium
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Acceptance Criteria
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Shell Test
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20.0 MPa
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Water
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No visible leakage
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High-Pressure Seat Test
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14.8 MPa
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Water
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No visible leakage
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Low-Pressure Seat Test
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0.5 – 0.7 MPa
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Air
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No bubbles leakage
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Test Duration
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Per API 598
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—
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Hold time conforms to standard
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- Marking & Supply
- Valve Marking: Per MSS SP-25, nameplate to include nominal size, pressure class, material, heat number, design standard, etc.
- Flow Direction: Flow direction arrow marking on body (flow below seat)
- Cleaning & Protection: Valves internally and externally cleaned, ends covered with protectors, threaded or weld ends coated with rust preventive
- Documentation: Material certificates, pressure test reports, declaration of conformity provided with shipment
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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