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楔式閘閥（wedge）

楔式閘閥以錐形剛性或彈性閘板楔入閥座環來關閉，密封力隨手動扭矩增加——這是通用型截斷閥，適用於保持開啟或關閉的管線，不用於節流。產品範圍涵蓋 NPS 2" 至 88"（DN50 至 DN2200），ASME Class 150 至 4500（PN16 至 PN760），閥體為碳鋼、不鏽鋼、合金鋼、雙相不鏽鋼與低溫鋼，剛性與彈性閘板可選，閥蓋為螺栓式或壓力自緊式並有波紋管密封變體，端接為 RF、BW、RTJ、承插焊或螺紋，操作從手動到液動，設計依 API 600 / ASME B16.34 / BS EN 558 / ISO 5752。選型取決於閘板型式對熱咬合的考量、閥蓋對壓力等級的選擇，以及端接對管路規格的匹配。

屬於閘閥系列

最後更新： 2026-11

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系列規格

Nominal valve connection size	NPS 2" to 88" (DN50 to DN2200)
Pressure class / nominal rating designation	ASME CLASS 150 to 4500 (PN16 to PN760)
Valve body material	Carbon Steel, Stainless Steel, Alloy Steel, Duplex Stainless Steel, Low-Temperature Steel
Stem material	Stainless Steel 304, Stainless Steel 410, Stainless Steel 420
End connection types	Raised Face (RF), Butt Weld (BW), Ring Type Joint (RTJ), Socket Weld, Screwed
Operation / closure mode	Manual, Gear Operator, Pneumatic, Electric Actuator, Hydraulic
Service temperature range	0 to 80 C
Design standards	API 600, ASME B16.34, BS EN 558, ISO 5752
Inspection and pressure-test standards	EN 12266-1, API 598
Face-to-face dimensional standard	BS 5163, DIN 3202 F4/F5, BS 5155, API 609
wedge types	Solid Wedge, Flexible Wedge
bonnet types	Bolted Bonnet, Pressure Seal Bonnet
applications	Oil & Gas Production, Refining, Petrochemical, Power Generation, Water Treatment, Chemical Processing
extended size range	2" - 60" (DN50 - DN1500)
extended pressure classes	Class 150 LB - 2500 LB (PN16 - PN420)
steel body material range	Carbon steel, Stainless steel, Alloy steel including WCB, LCB, LCC, LC1, LC3, CF8, CF8M, CF3, CF3M, WC6, C5, C9, C12, duplex 4A/5A and nickel-alloy options
wedge default options	flexible wedge by default, solid wedge can be provided upon request; renewable and non-renewable seat rings
bonnet connection by class	Bolted bonnet (BB) normally applied on CL150 - CL1500 with gasket or RTJ ring body-bonnet seal; pressure seal bonnet on higher classes
design manufacture standards	API 600, ASME B16.34, DIN 3352, EN 1984
bw end connections	BW, RTJ, Flanged
gearbox actuation options	Handwheel, Gearbox, Electric, Pneumatic
api design family mapping	Cast steel gate valve to API 600 (ISO 10434) or API 6D; cast stainless steel gate valve to API 603 or API 600; forged steel gate valve to API 602
pressure temperature rating	ASME B16.34
wedge type by size	Gate valves with NPS≥2 are of wedge flexible gate; gate valves with NPS < 2 are of wedge solid gate
bonnet design by class	Class 150 ~ Class900 gate valves usually connected with studs and nuts; Class 1500 ~ Class2500 gate valves usually of pressure seal design
flange dimension standards	ASME B16.5 (NPS < 24), ASME B16.47 series B, API 605 / ASME B16.47 series A
actuation practice	Handwheel or gearbox usually used for gate valve actuation; chain wheel and electric actuator also used on request
osy construction summary	Full port design, OS&Y, bolted bonnet, flexible/solid wedge, renewable seat rings, forged T-head stem, rising stem and non-rising handwheel, flanged or butt welding ends
small size range	1/2" - 12"
small size pressure classes	Class 150#, Class 300#
small size body materials	ASTM A351 CF8M, CF8, WCB
small size design standards	ASME B16.34, API 600, API 603
osy rising stem design	Rising stem, OS&Y gate valve
wedge customization options	solid wedge or flexible wedge design, materials including bronze, stainless steel and more
special features	Bolted Bonnet, Pressure Seal Bonnet, Solid Wedge, Flexible Wedge, Bellows Seal Design
wedge materials	Ductile Iron+EPDM
medium	Potable Water, Non-aggressive Fluids
Flange standards	BS 4504 PN6/PN10/PN16, DIN 2501 PN6/PN10/PN16, ISO 7005 PN6/PN10/PN16, JIS 5K/10K/16K, ASME B16.1 125LB, ASME B16.1 150LB, AS 2129 Table D and E