poster
Welding Gate Valve

Welding Gate Valve

Main Performance Parameters

• Nominal Pressure: PN16~PN160, complete high-pressure series

• Nominal Diameter: DN15~DN300

• Operating Temperature: -29℃~+425℃ (carbon steel); stainless steel and alloy steel are suitable for high-temperature conditions above 600℃

• Connection Method: Butt welding (BW), socket welding (SW), flangeless connection

• Sealing Form: Hard alloy seal, weld overlay seal, high sealing level, pressure and high temperature resistance

Structural Forms

1. Straight-through welded gate valve: Conventional and universal structure, widely applicable to most process pipelines.

2. Angle welded gate valve: 90° inlet and outlet layout, suitable for pipeline bends and compact equipment interface installation positions.

3. Y-type direct-flow welded gate valve: Smooth flow path, lower flow resistance, reducing media resistance and scouring losses.

Product Description

Key Advantages

 

• Welded connection, zero leakage points, zero external leakage, sealing performance far exceeding flanged valves.

• Integral forged valve body, high strength, high pressure resistance, high temperature resistance, and creep resistance, suitable for harsh working conditions.

• Compact structure and small size, saving installation space, suitable for narrow pipe corridors and areas with dense equipment.

• Forced sealing structure, excellent cut-off performance, accurately cuts off the medium, preventing crossflow and leakage.

• Resistant to aging and fatigue, stable operation under long-term high temperature and high pressure conditions, long service life.

 

Applicable Applications

 

• Power plants: High-temperature and high-pressure steam pipelines, boiler systems, thermal power generation pipelines.

• Petrochemical industry: Oil refining, coal chemical industry, hydrogenation units, high-pressure process media transportation.

• Thermal energy industry: Heat transfer oil, superheated steam, high-pressure hot water, high-temperature circulation systems.

• Energy and gas: High-pressure gas, closed-loop transportation pipelines for industrial special gases.

• Precision operating conditions: Chemical and special equipment pipelines requiring no external leakage, explosion-proof, and high airtightness.

Online Inquiry

Related Products

Gate

Gate

Working Principle: The valve stem drives the gate to move vertically up and down. When the gate is fully raised, the pipeline is straight and flow is unimpeded; when the gate falls, it presses against the valve seat, blocking the flow of media.

The media can flow in both directions without directional restrictions, and there are no flow direction requirements during installation.

Forged Steel Gate Valve

Forged Steel Gate Valve

Jīběn jiégòu duàn gāng zháfá shì yī zhǒng guānbì jiàn (zhá bǎn) yán tōnglù zhōngxīn xiàn chuízhí fāngxiàng yídòng de fámén, qí qǐ bì jiàn wèi zhá bǎn, yùndòng fāngxiàng yǔ liútǐ fāngxiàng chuízhí, tōngcháng jǐn yòng yú quán kāi huò quán guān, bù jùbèi tiáojié huò jié liú gōngnéng. Duàn gāng zháfá de zhá bǎn tōngcháng jùyǒu liǎng gè mìfēng miàn, zuì chángyòng de móshì zhá bǎn fá mìfēng miàn xíngchéng xiēxíng, xiēxíng jiǎo suí fámén shēn shù ér yì. Zhǔyào cānshù • gōngchēng yālì:PN16~PN160, shì pèi gāoyā, gāowēn gāoyā gōng kuàng • gōng chèn tōng jìng:DN15~DN200, yǐ xiǎo kǒujìng gāoyā guǎndào wéi zhǔ • gōngzuò wēndù: Tàn gāng-29℃~425℃; bùxiùgāng/héjīn gāng kě nài shòu 600℃yǐshàng gāowēn • fá tǐ cáizhì:A105,304,316L,F11,F22 děng zhěngtǐ duànzào cáizhì • mìfēng děngjí: Yìng mìfēng, ruǎn mìfēng kě xuǎn, mìfēng xìngnéng wěndìng, nài yā xìng qiáng
展开
291
Basic Structure A forged steel gate valve is a valve in which the closing element (gate) moves perpendicular to the centerline of the flow path. Its opening and closing element is the gate, and its movement direction is perpendicular to the fluid direction. It is typically used only for fully open or fully closed applications and does not have regulating or throttling functions.

The gate of a forged steel gate valve usually has two sealing surfaces. The most common type of gate valve has a wedge-shaped sealing surface, and the wedge angle varies depending on the valve parameters.

Check Valve

Check Valve

Working Principle: When the medium flows in the forward direction, the fluid pressure opens the valve disc/valve core, allowing the valve to open. When the medium flows in the reverse direction or the pressure reverses, the valve automatically closes and seals itself due to its own weight and the pressure of the reverse medium, completely blocking backflow without manual or electrical control.

Main Classifications and Structures:
1. Swing Check Valve: The valve disc swings around a pin. Commonly used in large-diameter applications, it has low flow resistance and smooth passage, suitable for water, steam, and oil.

2. Lift Check Valve: The valve disc moves vertically up and down along the valve stem, providing better sealing performance. Often used in small-diameter, high-pressure applications.

3. Wafer Check Valve: Ultra-thin structure, small size, low cost. It is clamped between two flanges for easy installation.

4. Butterfly Double-Disc Check Valve: Double-disc structure, sensitive opening and closing, good buffering, suitable for large-diameter water supply and drainage, and industrial pipelines.

5. Silent Check Valve: With a buffer structure, it reduces water hammer and noise. Commonly used in buildings and pump rooms.

Fluorine-Lined Check Valve

Fluorine-Lined Check Valve

Main Performance Parameters

• Nominal Pressure: PN6~PN25

• Nominal Diameter: DN15~DN300

• Operating Temperature: -50℃~+150℃ (depending on lining material; PFA and TFM modified fluoropolymer linings can withstand temperatures up to 260℃)

• Sealing Class: Class VI, extremely leak-proof

• Applicable Media: Strong acids, strong alkalis, strong oxidizers, organic solvents, hydrofluoric acid, aqua regia, and other highly corrosive media

Structural Forms

1. Lift Type (H41F46): Compact structure, excellent sealing performance, moderate flow resistance, suitable for horizontal pipelines.

2. Swing Type (H44F46): Single-plate structure, large diameter, low flow resistance, suitable for high-flow, large-diameter pipelines.

3. Vertical Type (H42F46): Adapted for vertically upward-installed pipelines, unidirectional backflow prevention, dedicated to vertical operating conditions.

+86 19858780995

+86 19858780995

+86 19858780995

+86 19858780995

19858780995@163.com