1/2″-800LB Close Die Forged Globe Valve

Design Standard API 602 / ASME B16.34 / BS 5352
Nominal Size 1/2 inch (DN15)
Pressure Class Class 800 LB (PN130)
Structure Type OS&Y (Outside Screw and Yoke), Bolted Bonnet
Connection Type NPT Threaded (ASME B1.20.1) or Socket Weld (ASME B16.11)
Operation Handwheel
Body Material ASTM A105N (Forged Carbon Steel, Normalized, suitable for NACE MR0175)

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Description

API 602 Forged Steel Globe Valve Technical Data Sheet

A105N Material 1/2″ 800LB NPT/Welded Ends

General Information

Item	仕様
バルブタイプ	Forged Steel Globe Valve
Design Standard	API 602 / ASME B16.34 / BS 5352
公称サイズ	1/2 inch (DN15)
Pressure Class	Class 800 LB (PN130)
Structure Type	OS&Y (Outside Screw and Yoke), Bolted Bonnet
Connection Type	NPT Threaded (ASME B1.20.1) or Socket Weld (ASME B16.11)
手術	Handwheel
ボディ素材	ASTM A105N (Forged Carbon Steel, Normalized, suitable for NACE MR0175)

Applicable Standards

Item	Standard Code
Design & Manufacturing	API 602, ASME B16.34, BS 5352
Face-to-Face / End-to-End	Manufacturer Standard / ASME B16.10
Socket Weld Ends	ASME B16.11
Threaded Ends	ASME B1.20.1 (NPT)
Test & Inspection	API 598
Pressure-Temperature Rating	ASME B16.34
Valve Marking	MSS SP-25

Main Design Features

ボディ構造: 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
シート: Renewable seat rings or integral hardfacing

Main Component Materials (A105N Material)

Item	Part Name	材料	Standard/Remark
1	体	ASTM A105N	Forged Carbon Steel, Normalized
2	Bonnet	ASTM A105N	Forged Carbon Steel
3	ディスク	ASTM A276 410 / A105N+STL	13Cr Stainless Steel or Hardfaced
4	Seat Ring	ASTM A276 410 / STL Hardfaced	Hardened Stainless Steel, Renewable or Integral
5	幹	ASTM A182 F6a (13Cr)	Stainless Steel
6	Gasket	304 + Flexible Graphite	Spiral Wound
7	Packing	Flexible Graphite	Low emission design
8	Gland Bushing	ASTM A276 410	Stainless Steel
9	Gland Flange	ASTM A105	Carbon Steel
10	Bonnet Bolt	ASTM A193 Gr.B7	Alloy Steel
11	Bonnet Nut	ASTM A194 Gr.2H	Heavy Hex Nut
12	Eye Bolt	ASTM A193 Gr.B7	Alloy Steel
13	Handwheel	ASTM A197	Malleable Cast Iron

Technical Parameters & Dimensions

5.1 Pressure-Temperature Ratings

Item	パラメータ
Nominal Pressure	Class 800 LB (PN130)
Shell Test Pressure	20.0 MPa (Hydrostatic) [API 598]
High-Pressure Seat Test Pressure	14.8 MPa (Hydrostatic) [API 598]
Low-Pressure Pneumatic Test Pressure	0.5 – 0.7 MPa (Air) [API 598]
Temperature Range	-29°C ~ 425°C
Applicable Media	Water, steam, oil, etc.

5.2 Dimensions (1/2″ Class 800 NPT/Socket Weld)

Dimension	Value	Remark
End-to-End Length (L)	79 mm	For NPT/SW ends, typical API 602 value
Height (H-OPEN)	Approx. 157 mm	Fully open position, reference
Handwheel Diameter (W)	100 mm	Reference
Socket Weld Bore (B)	22.2 mm	Socket weld inner diameter
Socket Weld Depth (S)	10 mm	Minimum socket depth
Threaded End	1/2″ NPT	Per ASME B1.20.1
Weight	Approx. 1.6 kg	Bolted bonnet type, reference

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)

Test Item	Test Pressure	Medium	Acceptance Criteria
Shell Test	20.0 MPa	Water	No visible leakage
High-Pressure Seat Test	14.8 MPa	Water	No visible leakage
Low-Pressure Seat Test	0.5 – 0.7 MPa	Air	No bubbles leakage
Test Duration	Per API 598	—	Hold time conforms to standard

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

保証:

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