What is an Angle Seat Valve?

The Benefits Of  Angle Seat Valves

Angle seat valves are highly regarded for their efficient and reliable performance in a variety of fluid control applications. The key benefits of using an Angle Seat Valves include:

◆ High Flow Capacity: Due to the unique angle design, angle seat valve allows fluid to flow more freely compared to conventional valves, ensuring high flow rates.

◆ Durability: The angle seat valve is very sturdy, using materials such as brass and stainless steel, combined with the structure of the piston, Compared to non piston valves such as ball valves, butterfly valves, globe valves, this making the angle seat valves have higher pressure adaptability.

◆ Space-Efficient Design: The special angled design minimizes the space needed for valve installation, making them suitable for confined spaces and complex setups.

◆ Smooth Operation: Angle seat valves provide smooth, quick action, reducing the likelihood of damage to equipment in automated systems, increasing operational efficiency.

◆ Low Maintenance: Their simple and special design and fewer moving parts make angle seat valves more reliable and easier to maintain, reducing downtime in industrial processes.

Application Of Angle Seat Valves

Angle seat valve is a ideal for applications where high flow, fast response, and reliable sealing are required. Understanding the components of angle seat valve is crucial for proper use：

Components of  Angle Seat Valve

Valve Body: The main body of the valve is generally made of stainless steel, brass, or other high-pressure and corrosion-resistant materials, providing support for the internal working components.The valve body of a pneumatic angle seat valve, usually made from 304 or 316 stainless steel, offers corrosion resistance, high pressure tolerance, and houses opposing metal seats with movable seals to control flow, plus connections for the pneumatic actuator.

Actuator: Actuators have three driving methods to operate angle seat valves: electric, hydraulic, and manual. However, pneumatic actuators are the most commonly used,which made of lightweight aluminum alloy,Using compressed air to drive the valve stem, thereby controlling the opening and closing of the valve.

Valve Stem & Sealing Mechanism: Usually composed of corrosion-resistant, wear-resistant, and high-strength stainless steel,serve as the connecting component between the piston rod and the valve core, the valve stem is responsible for transmitting force and, together with the valve core, opens or closes the valve.

Valve core and seat:The valve core is a key component for controlling the flow of the medium, and the valve seat is the sealing surface when the valve core is closed. The valve core is driven by the valve stem and moves in conjunction with the valve seat to achieve opening, closing, or throttling.

Application of Angle Seat Valve

Angle seat valves are used in a variety of industrial settings. Some of the most common applications include:

◆ HVAC Systems: Used for controlling airflow in heating, ventilation, and air conditioning systems.

◆ Chemical Processing: These valves are ideal for regulating the flow of chemicals in processing plants, especially with stainless steel angle seat valves that resist corrosion.

◆ Food and Beverage: In processing and packaging, pneumatic angle seat valves ensure precise control of fluids and gases in hygienic environments.

◆ Automated Machinery: Often found in automated systems for controlling the flow of fluids and gases to machinery, where quick and reliable operation is key.

◆ Water Treatment Plants: These valves are crucial for managing the flow of water in filtration and purification systems, ensuring continuous operations.

How Does Angle Seat Valve Work?

The Angle Seat Valve has two working modes: normally open and normally closed. Angle seat valves stand out due to their advantages of fast fluid switching, high flow rate, and low resistance to fluids.

The working principle of of angle seat valves:

Due to the two types of angle seat valves, normally open and normally closed, their working modes are also different.The following is an example of normally closed.

◆ In the initial state, the spring presses the valve core against the valve seat, and the diameter is closed, which is the state where the valve is not connected.

◆ When the gas source is introduced into the pneumatic actuator, the pneumatic actuator starts to work, and the piston rod moves to drive the valve stem. The valve stem of the angle seat valve lifts the valve core, opens the diameter, and the valve is in circulation.

◆ After stopping the gas supply, the spring pulls the valve core to reset, and the valve core is tightly attached to the valve seat, closing the fluid channel.

Normally open angle seat valves work in the opposite way.The following are the specific working steps for the two states of normally open and normally closed.

Normally closed:

Default closed, relying on spring force to press the valve core.

After ventilation, the air pressure pushes the piston, compresses the spring, and lifts the valve core - the valve opens.

Stop gas supply, reset the spring, and close the valve.

Normally open:

By default, the spring keeps the valve core in the open position.

After ventilation, the piston presses down on the valve core - the valve closes.

Stop gas supply, the spring lifts the valve core again - the valve opens.

Why create an angle structure?

Corner seat design, with a tilt angle of 45 ° or greater, allows for low pressure drop and smooth discharge of fluids, especially suitable for steam and high viscosity media. Compared to ordinary straight through valves, the flow rate when opened is faster, the efficiency is higher, and the water hammer effect can be significantly reduced.

Angle Seat Valve Types

Angle seat valves are mostly driven by pneumatic actuators, so they are also known as pneumatic angle seat valve.There are several options available when choosing an angle seat valve, each designed for different operational needs:

Types of other actuator drivers：

◆ Standard Seat Valve: Suitable for most industrial applications that require medium pressure and steam control.Like SMC,Festo,Airtac standards and so on.

◆ High-Pressure Angle Valve: These are designed to handle high-pressure systems and are often used in oil & gas, and chemical industries.

◆Valve Orifice:The diameter of the angle seat valve is different, for example, the PV100 series has a smaller diameter, while the PV500 series has a larger diameter.The larger the orifice, the more suitable it is for working conditions with higher flow rates.

Common types of pneumatic actuator drives：

◆ Stainless Steel Angle Seat Valve: Known for their corrosion resistance, these are ideal for environments where hygiene and durability are critical, such as the food and beverage industry.

◆ SMC Angle Seat Valve: SMC angle seat valves are widely used in pneumatic applications due to their high precision and reliability in controlling air flow.

◆ Custom Angle Seat Valve: Tailored solutions to meet specific needs, such as special materials or pressure ratings, available from angle seat valve manufacturers for specialized applications.

Normally closed

By default, it shuts off when there is a power outage, which is suitable for situations where the medium needs to be automatically cut off when there is an abnormal power outage.

Normally open

The default state is on, suitable for systems that want to maintain fluid flow even when losing control of the source.

Choose Suggestions

Priority should be given to the normally closed type, unless there are special process requirements for continuous flow.When designing automation systems, safety status should be considered.

Fokca Introduction

Fokca is a professional angle seat valve manufacturer of startup equipment based in Ningbo, specializing in a wide range of pneumatic valves, including Angle Seat Valves, Globe Control Valves, Solenoid Valves, and other valve products. Additionally, we offer Hoses & Connectors, Hydraulic Components, and other types of products.As automation equipment suppliers, we are dedicated to supplying high-quality valves and components, meeting the valve needs of various industrial applications. 

Fokca follows a professional production and service philosophy, with a strong focus on delivering top-notch products and services to become the leading exporter of pneumatic valves. While providing products, we will also share solutions for pneumatic valves, including maintenance techniques, installation instructions, selection prompts, and other related content.