A parallel slide gate valve is a kind of valve. It is designed to transmit flow through a piping system. Unlike other saracinesche, this type is easy to install and requires little space along the pipe axis.
Questa valvola è utilizzata nell'industria chimica, petrolifera e del gas naturale. Di solito queste valvole sono forgiate, ma possono anche essere fuse. Sono realizzati in metalli temprati e sono adatti per applicazioni di flusso di fluidi sia on che off.
Queste valvole hanno una lunga durata e sono molto semplici da pulire. Tuttavia, devono essere aperti e chiusi con cura. A causa della natura del meccanismo di tenuta, è importante assicurarsi che il sedile sia posizionato correttamente. Se la sede si deforma, la pressione del fluido potrebbe causare una perdita.
Are Parallel Slide Gate Valves Easy to Operate?
Le valvole a saracinesca parallela sono molto facili da usare. Possono essere azionati da volantino, attuatori pneumatici o motori elettrici. Utilizzando il volantino, l'operatore applica la coppia allo stelo.
Di conseguenza, le caratteristiche operative della valvola sono simili ad altre valvole a saracinesca. Questo perché la valvola funziona a bassa energia, il che rende il processo di pompaggio più efficiente.
Ci sono molti vantaggi nell'usare una valvola a saracinesca parallela. Uno dei più significativi è la sua capacità di sigillare su un'intera superficie. Un altro vantaggio è la sua capacità di essere reso sicuro dal fuoco.
Come funziona una valvola a saracinesca parallela?
Le valvole a saracinesca parallele vengono utilizzate per controllare il flusso di liquidi nei sistemi di tubazioni. Forniscono l'isolamento di un sistema di tubazioni e sono comunemente utilizzati nelle industrie chimiche e di produzione di energia. Le valvole possono essere azionate da motori pneumatici o elettrici. Il loro design compatto li rende adatti all'uso in tubazioni.
La valvola è progettata per mantenere la sua tenuta sia in condizioni di alta che di bassa pressione. È adatto anche per il servizio a temperature molto elevate. Viene fornito anche un design antistatico. Una guarnizione in grafite flessibile viene utilizzata anche per un design antincendio.
Le molle sulla valvola mantengono in contatto strisciante la sede a monte ea valle. Ciò riduce la coppia operativa. Quando la pressione viene scaricata, la sede della valvola si ripristina automaticamente. In questo modo si ottiene la tenuta su tutta la superficie.
Where Are Parallel Slide Gate Valves Used?
A parallel slide gate valve is a type of valve used to control fluid flow in a piping system. The valve is made of two discs that are connected through a stem.
It is mainly used for regulating fluid flow in oil and gas applications. These types of valves are easy to disassemble, clean, and repair.
A parallel slide gate valve can be driven by an electric motor or a handwheel.
Normally, the handwheel is placed above the stem and the valve can be operated manually, pneumatically, or electro-hydraulically.
Moreover, parallel slide gate valve applications include the following:
1. Power Generation
Parallel slide gate valves find extensive applications in power plants, particularly in steam and water systems.
They play a crucial role in regulating and isolating fluid flow within power generation processes, ensuring efficient and controlled operation.
2. Industria del petrolio e del gas
In the oil and gas sector, parallel slide gate valves are employed for various purposes, including flow control and isolation in pipelines.
Their robust design and reliable performance make them suitable for handling the challenging conditions often encountered in oil and gas operations.
3. Refining and Petrochemicals
In refining and petrochemical facilities, parallel slide gate valves are utilized for controlling the flow of different fluids in refining processes.
Their ability to handle high temperatures and pressures makes them well-suited for applications where precise control and tight shut-off are essential.
4. Water Treatment Plants
Parallel slide gate valves are integral components in water treatment plants.
They are employed for regulating the flow of water in different stages of the treatment process, ensuring effective treatment and distribution of clean water to various points in the system.
5. Chemical Processing
Chemical plants often use parallel slide gate valves for managing the flow of various chemicals and fluids in different stages of the production process.
The valves’ design allows for reliable and precise control, contributing to the efficiency and safety of chemical processing operations.
6. Sistemi HVAC
Heating, ventilation, and air conditioning (HVAC) systems incorporate parallel slide gate valves for controlling the flow of air, water, or other fluids.
These valves help in maintaining optimal conditions within HVAC systems, contributing to energy efficiency and temperature control.
7. Marine and Shipbuilding
In marine and shipbuilding applications, parallel slide gate valves are utilized for controlling fluid flow in different systems onboard vessels.
Their durable construction and ability to withstand harsh marine environments make them suitable for marine engineering.
8. General Industrial Applications
Parallel slide gate valves find widespread use in various industrial settings where precise flow control, reliable shut-off, and durability are paramount.
Their versatility makes them valuable in diverse applications across different industries, contributing to efficient and safe fluid-handling processes.
Types of Slide Parallel Gate Valves
There are several kinds of parallel slide gate valves. These depend on torque force to wedge the disc into the valve body.
Moreover, common types of slide parallel gate valves include rising stem and non-rising stem variations.
IL rising stem design features a stem that moves upward when the valve is opened, providing a visual indication of the valve’s status.
In contrast, non-rising stem valves have a stem that remains stationary while the gate moves.
Both types are available with various materials and configurations to suit different applications, offering reliable performance in industries such as power generation, oil and gas, water treatment, and more.
Are Slide Parallel Gate Valves Easy to Install?
Generally, parallel-slide gate valves are compact and easy to install. Their elongated stem prevents thermal deformation and ensures strong sealing.
With their wide flat seating, they minimize the effect of minor damages on the surface.
Parallel slide gate valves are often used for applications requiring high differential pressure.
However, they are not recommended for service under hazardous conditions.
Chiave da asporto
Parallel slide gate valves are pivotal in industries like power generation, oil and gas, and water treatment.
They come in rising and non-rising stem variations, providing flexibility for diverse applications.
The rising stem offers visual indication, while the non-rising stem caters to space constraints.
Both types boast robust construction and versatility, making them reliable choices for controlling the flow of liquids in critical processes, ensuring operational efficiency and durability in demanding environments.
