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วาล์วประตู

  • 1″-600LB Jacked Gate Valve
    1″-600LB Jacked Gate Valve
    Size 1 inch (DN25)
    Pressure Class Class 600 LB (PN100 / 1480 PSI)
    Body Material Carbon Steel (ASTM A105) / Stainless Steel (A182 F304/F316) User specified
    Jacket Material Carbon Steel / Stainless Steel (same as body or separate)
    Manufacturing Process Forged Steel (Close Die Forged)
    Design Standard API 602 / ASME B16.34 / MSS SP-145
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  • 3/4″-800LB-SW Bellows Seal Gate Valve
    3/4″-800LB-SW Bellows Seal Gate Valve
    Nominal Size 3/4 inch (DN 20)
    Pressure Class Class 800LB (equivalent to PN 140 ~ 160 bar, depending on standard)
    End Connection Socket Weld (SW)
    Structure Type Outside Screw & Yoke (OS&Y) / Solid Wedge
    Stem Sealing Bellows seal + auxiliary graphite packing
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  • NRS Metal Seated Gate Valve (HW)
    NRS Metal Seated Gate Valve (HW)
    Valve Type Non-Rising Stem Gate Valve (Inside Screw)
    Body Material Cast Iron (ASTM A126 Class B / EN-GJL-250)
    Seat Material Bronze (Integral or renewable)
    Stem Material Brass (C36000 / C37700)
    End Connection Threaded (Female NPT per ASME B1.20.1)
    Operation Handwheel
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  • 1/2″-300LB F53 Close Die Forged Gate Valve
    1/2″-300LB F53 Close Die Forged Gate Valve
    Nominal Size 1/2″ (DN15)
    Pressure Rating Class 300 (PN 50)
    Valve Type Gate Valve – Rising Stem, Solid Wedge
    Body Construction Close Die Forged, Bolted Bonnet
    End Connections NPT Female (ASME B1.20.1) / Socket Weld (ASME B16.11) / Flanged (ASME B16.5 Class 300) as specified
    Temperature Range –29°C ~ +250°C (depending on packing)
    Suitable Media Seawater, sour gas (H₂S/CO₂), chlorides, acids, high pressure oil & gas, chemical fluids
    Flow Direction Bidirectional
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  • 2″-2500LB-RTJ Close Die Forged Gate Valve
    2″-2500LB-RTJ Close Die Forged Gate Valve
    Product Name Forged Gate Valve, Bolted Bonnet, Outside Screw & Yoke (OS&Y)
    Nominal Size 2″ (DN50)
    Pressure Rating Class 2500 (42 MPa / 6090 psi)
    Connection Type Ring Type Joint (RTJ) – Raised Face not applicable
    Flange Standard ASME B16.5 (RTJ groove per ASME B16.20)
    Design Standard ASME B16.34 / API 602 (for forged small bore gate valves)
    Face-to-Face Dimension ASME B16.10 – 216 mm (8.50″) for Class 2500
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  • 2″-1500LB-SW F91 Bellows Seal Gate Valve
    2″-1500LB-SW F91 Bellows Seal Gate Valve
    Valve Type Gate Valve (OS&Y, Rising Stem)
    Nominal Size 2 inches (DN50)
    Pressure Rating Class 1500
    Connection Type Socket Weld (SW) Ends
    Special Design Bellows Seal (Hermetic stem sealing)
    Body / Bonnet Material ASTM A182 F91 (Chrome-Moly-Vanadium Alloy Steel)
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  • 2″-300LB SS Bellow Seal SW End Gate Valve
    2″-300LB SS Bellow Seal SW End Gate Valve
    Nominal Size 2 inches (DN50)
    Pressure Rating Class 300
    Connection Type Socket Weld (SW) Ends
    Special Design Bellow Seal (Bellows Sealed)
    Body / Bonnet Material ASTM A182 F316L (Forged Stainless Steel, Low Carbon)
    Operation Handwheel (Manual) / Gearbox optional
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  • DN500-PN10 Cast Iron Metal Seated Rising Stem Gate Valve
    DN500-PN10 Cast Iron Metal Seated Rising Stem Gate Valve
    • Type: Outside Screw and Yoke (OS&Y), Solid Wedge, Flanged Ends
    • Design Standard: DIN 3352
    • Face-to-Face Standard: DIN 3202 F4
    • Seat Type: Metal-to-Metal (Bronze Seated)
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  • Gate valve BB RS OS&Y in bronze or brass
    เกตวาล์ว BB RS OS&Y สีบรอนซ์หรือทองเหลือง
    ภาพถ่ายแสดงข้อมูลจำเพาะดังต่อไปนี้
    ขนาด:2″
    เรตติ้ง: 150 ปอนด์
    ตัวถังและฝากระโปรง : C95500
    แผ่น : C95500 SOLID
    สเต็ม: MONEL K500
    เบาะนั่ง : MONEL K500
    การทำงาน: ล้อ
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  • Plumbing brass gate valve
    วาล์วประตูทองเหลืองประปา
    ภาพถ่ายแสดงข้อมูลจำเพาะดังต่อไปนี้
    ขนาด:DN15
    คะแนน:PN16
    ตัวเรือนและฝากระโปรง : ทองเหลือง
    แผ่น: ทองเหลือง
    แกน: ทองเหลือง
    ที่นั่ง: ทองเหลือง
    การทำงาน: ล้อ
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  • Screwed bonnet gate valve
    วาล์วประตูฝากระโปรงแบบขันเกลียว
    ภาพถ่ายแสดงข้อมูลจำเพาะดังต่อไปนี้
    ขนาด:2″
    เรตติ้ง: 150 ปอนด์
    ตัวถังและฝากระโปรง : B62
    แผ่น: B62, SOLID
    ก้าน: ASTM A182 F316
    ที่นั่ง: B62
    การทำงาน: ล้อ
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  • B148 C95800 Nickel-Aluminum Bronze Gate Valve
    B148 C95800 วาล์วประตูบรอนซ์นิกเกิล-อะลูมิเนียม
    ขนาด: 3" (DN80)
    ระดับแรงดัน: 150LB (PN20)
    วัสดุหลัก:
    ตัวถัง/ฝากระโปรง/ดิสก์/สเต็ม: ASTM B148 C95800 (โลหะผสมนิกเกิล-อลูมิเนียมบรอนซ์)
    ที่นั่ง: โลหะต่อโลหะแบบองค์รวม
    การออกแบบและการดำเนินงาน:
    การทำงาน: พวงมาลัย
    การเชื่อมต่อปลาย: หน้าแปลน RF (หน้ายก)
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A gate valve is a type of valve used to completely stop or allow flow in a pipeline by raising or lowering a solid barrier (the gate) into the path of the fluid. It is primarily designed for on/off control rather than flow regulation. When the valve is fully open, the gate is entirely lifted, allowing unobstructed flow with minimal pressure drop. When closed, the gate seals tightly to stop flow entirely. Gate valves are most effective in systems where the valve remains either fully open or fully closed for extended periods. They are not ideal for throttling purposes because the partially open gate can vibrate, causing wear and potentially damaging the valve. These valves are widely used in water supply systems, oil and gas pipelines, and industrial applications due to their robust construction and ability to handle high pressures and temperatures. Common materials include cast iron, stainless steel, and brass, with options tailored to specific media and environments. Gate valves are known for their durability, tight sealing, and long service life, making them a preferred choice in many heavy-duty applications.

What Are The Advantages Of Using A Gate Valve?

Gate valves offer several advantages that make them a popular choice for a wide range of industries. One of the key benefits is their low pressure drop when fully open, which helps maintain system efficiency. Their straight-through flow design minimizes turbulence and energy loss. Gate valves also provide a reliable shutoff, which is crucial for isolating sections of piping during maintenance or emergencies. Because they are designed for full open or closed positions, gate valves reduce wear and extend service life when used properly. Their versatility in handling different types of fluids—such as water, steam, oil, and gas—adds to their appeal. In addition, gate valves are available in various sizes and materials, which makes them suitable for everything from household plumbing to large-scale industrial systems. They can be installed in both horizontal and vertical orientations, offering flexibility in system design. With proper installation and minimal maintenance, gate valves deliver long-term, dependable performance even in demanding environments.

Gate Valves FAQ

  • 1.What is a gate valve used for?

    It’s used to start or stop the flow in a pipeline.

  • 2.Can a gate valve be used for flow control?

    No, it’s not suitable for throttling.

  • 3.Is a gate valve better than a ball valve?

    Each has different uses—gate valves are better for isolation in large systems.

  • 4.What media can gate valves handle?

    They can handle water, oil, gas, steam, and slurry.

  • 5.How do I know if a gate valve is open or closed?

    In rising stem types, the stem position indicates the valve status.

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