3/4″-800LB Close Die Forged Stainless Steel Gate Valve

Design Standard API 602 / ASME B16.34 / BS 5352
Nominal Size 3/4 inch (DN20)
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 A182 F316L (Forged Austenitic Stainless Steel)

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설명

API 602 Forged Stainless Steel Gate Valve Technical Data Sheet

F316L Material 3/4″ 800LB NPT/Welded Ends

General Information

Item	사양
밸브 유형	Forged Steel Gate Valve
Design Standard	API 602 / ASME B16.34 / BS 5352
공칭 크기	3/4 inch (DN20)
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)
작업	Handwheel
본체 재질	ASTM A182 F316L (Forged Austenitic Stainless Steel)

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

차체 구조: One-piece die forged body, dense structure, high strength, no casting defects, excellent corrosion resistance
Bonnet Connection: Bolted bonnet design with stainless steel/flexible graphite spiral wound gasket sealing
Wedge Design: Solid wedge, fully guided design, minimizes wear, reliable sealing
Stem Design: Backseat feature allows packing replacement under pressure when valve is fully open
Seating Surface: Metal-to-metal seating, hardfaced or integral stainless steel seat rings for durability
Packing: Flexible graphite packing, low emission design
Seat Rings: Renewable seat rings or integral seat

Main Component Materials (F316L Material)

Item	Part Name	재료	Standard/Remark
1	몸	ASTM A182 F316L	Forged Austenitic Stainless Steel
2	Bonnet	ASTM A182 F316L	Forged Austenitic Stainless Steel
3	Wedge	ASTM A182 F316L	Stainless Steel
4	Seat Ring	ASTM A276 316L	Hardened Stainless Steel, Renewable or Integral
5	줄기	ASTM A182 F316L	Stainless Steel
6	Gasket	316 + Flexible Graphite	Spiral Wound
7	Packing	Flexible Graphite	Low emission design
8	Gland Bushing	ASTM A182 F316L	Stainless Steel
9	Gland Flange	ASTM A182 F316L	Stainless Steel
10	Bonnet Bolt	ASTM A193 B8	Stainless Steel
11	Bonnet Nut	ASTM A194 8	Stainless Steel
12	Eye Bolt	ASTM A193 B8	Stainless Steel
13	Handwheel	ASTM A197	Malleable Cast Iron

Technical Parameters & Dimensions

5.1 Pressure-Temperature Ratings

Item	매개변수
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]
온도 범위	-29°C ~ 425°C
Applicable Media	Nitric acid, acetic acid, corrosive media

5.2 Dimensions (3/4″ Class 800 NPT/Socket Weld)

Dimension	Value	Remark
End-to-End Length (L)	92 mm	For NPT/SW ends, typical API 602 value
Height (H-OPEN)	Approx. 161 – 169 mm	Fully open position, reference
Handwheel Diameter (W)	100 mm	Reference
Socket Weld Bore (B)	28.5 mm	Socket weld inner diameter
Socket Weld Depth (S)	12.7 mm	Minimum socket depth
Threaded End	3/4″ NPT	Per ASME B1.20.1
Weight	Approx. 2.3 kg	Bolted bonnet type, reference

5.3 End Connection Details

NPT Threaded Ends: Per ASME B1.20.1, 3/4 inch American Standard Taper Pipe Thread
Socket Weld Ends (SW): Per ASME B16.11, bore dia 28.5mm, socket depth 12.7mm
Flow Direction: Gate valve has no flow direction restriction

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.
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

보증:

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