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Valvole a saracinesca

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.

  • 42″ 600lb Flexible Wedge Gate Valve, Bb, Os&Y,Rs. Motorised.
    42″ 600lb Flexible Wedge Gate Valve, Bb, Os&Y,Rs. Motorised.
    LA FOTO MOSTRA LE SPECIFICHE COME SOTTO
    TAGLIA: 42″
    VALUTAZIONE: 600 LB
    CARROZZERIA E COFANO: ASTM A216 WCB
    DISCO: ASTM A216 WCB+STELLITE 6, CUNEO FLESSIBILE, PORTA COMPLETA
    STEM: ASTM A182 F6A
    SEDILE: ASTM A105+STELLITE 6
    ATTUAZIONE: LIMITORQUE SMC-5 480V AC, 3PH, 60HZ, CON COMANDO MANUALE.
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  • Solid wedge gate valve, BB, OS&Y, RS, motorised
    Solid wedge gate valve, BB, OS&Y, RS, motorised
    LA FOTO MOSTRA LE SPECIFICHE COME SOTTO
    DIMENSIONE: 20″*16″
    VALUTAZIONE: 300LB 600LB
    CARROZZERIA E COFANO: ASTM A216 WCB
    DISCO: ASTM A216 WCB+STELLITE 6, CUNEO FLESSIBILE
    STEM: ASTM A182 F6A
    SEDILE: ASTM A105+STELLITE 6
    ATTUAZIONE: TIPO MODULANTE INTELLIGENTE LIMITORQUE, segnale 4-20mA, 480V CA, 3PH, 60HZ, CON COMANDO MANUALE.
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  • Manual gear flexible wedge gate valve
    Manual gear flexible wedge gate valve
    LA FOTO MOSTRA LE SPECIFICHE COME SOTTO
    DIMENSIONE: 8"
    VALUTAZIONE: 600 LB
    CARROZZERIA E COFANO: ASTM A216 WCB
    DISCO: ASTM A216 WCB+STELLITE 6, CUNEO FLESSIBILE
    STEM: ASTM A182 F6A
    SEDILE: ASTM A105+STELLITE 6
    ATTUAZIONE: RIDUTTORE
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  • NRS Resilient Seated Gate Valve
    NRS Resilient Seated Gate Valve
    Dimensioni: 2″~24”
    Valutazione: 150 libbre
    Materiali:
    Corpo e coperchio ASTM A536 65-45-12, rivestiti con resina epossidica
    Disco rivestito ASTM A536 65-45-12+EPDM
    Stelo ASTM A182 F6A
    Sedile con carrozzeria integrale
    Operatore: volantino
    Estremità: Flangia secondo ANSI B16.1
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  • Api 6d & Api 600 Manual Solid Wedge Gate Valve
    Api 6d & Api 600 Manual Solid Wedge Gate Valve
    LA FOTO MOSTRA LE SPECIFICHE COME SOTTO
    DIMENSIONE: 8"
    VALUTAZIONE: 600 LB
    CARROZZERIA E COFANO: ASTM A216 WCB
    DISCO: ASTM A216 WCB+STELLITE 6, SOLIDO
    STEM: ASTM A182 F6A
    SEDILE: ASTM A105+STELLITE 6
    ATTUAZIONE: RIDUTTORE
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  • 16″ 1500lb F91 Parallel Disc Gate Valve For Thermal Duty
    16″ 1500lb F91 Parallel Disc Gate Valve For Thermal Duty
    LE FOTO MOSTRANO LE SPECIFICHE COME SOTTO
    TAGLIA: 16″
    VALUTAZIONE: 1500 LB
    CORPO: ASTM A182 F91
    DISCO: ASTM A182 F91
    PRIMAVERA: INCONEL X-750
    STEM: ASTM A182 F91
    SEDILE: ASTM A182 F91 SOSTITUIBILE.
    ATTUAZIONE: RIDUTTORE
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  • Slab gate valve flat gate valve
    Slab gate valve flat gate valve
    LE FOTO MOSTRANO LE SPECIFICHE COME SOTTO
    DIMENSIONE: DN200
    VALUTAZIONE:PN420
    CARROZZERIA E COFANO: ASTM A216 WCB
    DISCO: ASTM A182 F304+STELLITE 6, SOLIDO
    STEM: ASTM A182 F6A
    SEDILE: ASTM A105+STELLITE 6
    ATTUAZIONE: RUOTA
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  • Spring Close Fast Quick Open Gate Valve Discharge Valve
    Spring Close Fast Quick Open Gate Valve Discharge Valve
    LA FOTO MOSTRA LE SPECIFICHE COME SOTTO
    DIMENSIONE: 8"
    VALUTAZIONE: 600 LB
    CARROZZERIA E COFANO: ASTM A216 WCB
    DISCO: ASTM A216 WCB+STELLITE 6, CUNEO FLESSIBILE
    STEM: ASTM A182 F6A
    SEDILE: ASTM A105+STELLITE 6
    ATTUAZIONE: RIDUTTORE
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  • CNG LNG LPG Pattern forged cryogenic gate valve
    CNG LNG LPG Pattern forged cryogenic gate valve
    LA FOTO MOSTRA LE SPECIFICHE COME SOTTO
    DIMENSIONE: 1″
    VALUTAZIONE: 800 LB
    FINE: SW COME DA ASME B16.11
    TEMPERATURA: -196 ℃
    CARROZZERIA E COFANO: ASTM A182 F304
    CUNEO: SOLIDO ASTM A182 F304+HF
    STEM: ASTM A182 F304
    SEDILE: METALLO HF
    ATTUAZIONE: VOLANTINO
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  • U bolt gate valve
    U bolt gate valve
    • Dimensioni: 3″
    • Valutazione: 125 libbre
    • Materiali: Corpo, cofano e cuneo ASTM A126 GR.B
    • Voce 410SS
    • Bullone a U in acciaio al carbonio
    • Operatore: volantino
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  • Gate valve BB RS OS&Y in bronze or brass
    Gate valve BB RS OS&Y in bronze or brass
    LA FOTO MOSTRA LE SPECIFICHE COME SOTTO
    DIMENSIONE: 2″
    VALUTAZIONE: 150 LB
    CARROZZERIA E COFANO: C95500
    DISCO: C95500 SOLIDO
    ATTACCO: MONEL K500
    SEDILE: MONEL K500
    ATTUAZIONE: RUOTA
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  • Plumbing brass gate valve
    Plumbing brass gate valve
    LA FOTO MOSTRA LE SPECIFICHE COME SOTTO
    DIMENSIONE: DN15
    VALUTAZIONE:PN16
    CORPO E COFANO: OTTONE
    DISCO: OTTONE
    STELO: OTTONE
    SEDILE: OTTONE
    ATTUAZIONE: RUOTA
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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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