Bead Single Component Diaphragm Valves

Description

Bead Single Component Diaphragm Valves are designed to control the flow of fluids by utilizing a flexible diaphragm. These valves are particularly effective in managing the flow of fluids that contain suspended solids or require a high degree of cleanliness, as the diaphragm acts as a barrier between the fluid and the valve's mechanical components.

Working Principle

The working principle of Bead Single Component Diaphragm Valves involves a diaphragm connected to a compressor. The compressor is moved by a valve stem to either increase or decrease the flow of fluid. When the compressor is raised, the diaphragm lifts, allowing fluid to pass through. Conversely, when the compressor is lowered, the diaphragm presses against the valve seat, stopping the flow. This design is beneficial because it prevents the fluid from coming into contact with the valve's mechanical parts, reducing the risk of contamination and making it suitable for handling corrosive or viscous fluids .

Applications

Bead Single Component Diaphragm Valves are used in a variety of applications, including the dispensing of adhesives, silicones, chemicals, and cleaners. They are also employed in the food and beverage industry, medical and pharmaceutical applications, and in environments that require cleanroom conditions, such as laboratories .

Advantages over other Single Component Diaphragm Valves

One of the main advantages of Bead Single Component Diaphragm Valves is their ability to handle high viscosity fluids without the risk of clogging, which can be a problem for other valve types. Their single-part construction minimizes weak points and reduces the risk of air ingress, which is crucial for maintaining the integrity of aerobically curable products .

Limitations

Bead Single Component Diaphragm Valves have limitations, including a shorter diaphragm life and limited pressure and temperature capabilities. These factors can affect their performance in certain applications, particularly those involving extreme conditions .

Considerations

When considering Bead Single Component Diaphragm Valves, it is important to evaluate the initial costs, which can be higher due to their specialized design. Operating expenses may be lower due to reduced maintenance needs, but the durability of the diaphragm should be considered, as it may require more frequent replacement compared to other valve types. Additionally, the accuracy of flow control and the potential for reduced performance under high-pressure conditions should be assessed to ensure they meet the specific needs of the application .

3 Results
Diaphragm Dispensing Valve, 752V Series
from Nordson EFD

The 752V Series diaphragm valve delivers fine flow control when dispensing solvents, cyanoacrylates, anaerobics, fluxes, UV-cure adhesives, and other low- to medium-viscosity fluids. The open/close stroke is adjustable from 0.13 mm to 0.64 mm (0.005" to 0.025"), producing a very fast response and... [See More]

  • Dispensing Application: Bead
  • Number of Components: Single Component
  • Material Feed: Batch (Syringe)
  • Application: AdhesiveSilicone; FluxSolder
Handheld Diaphragm Valve -- TS5623
from Techcon

The TS5623 Series Hand Held Diaphragm Valves are designed to dispense low to medium viscosity materials over a wide range of shot and bead sizes. A finger lever actuates the dispensing cycle and an internal spring return makes the valves fully adaptable for use without a controller. A short opening... [See More]

  • Dispensing Application: Bead
  • Media Viscosity: 1 to 50000
  • Material Feed: Batch (Syringe)
High Flow Dispensing Diaphragm Valve, 752HF Series
from Nordson EFD

The 752HF Series high flow diaphragm valve provides precise, drip-free dispensing of UV-cure resins and similar fluids used in the media manufacturing of DVDs, Blu-Ray DVDs, and CDs. Designed for smooth, unrestricted material flow, the 752HF reduces turbulence and prevents micro-bubbles from... [See More]

  • Dispensing Application: Bead
  • Number of Components: Single Component
  • Material Feed: Batch (Syringe)
  • Application: AdhesiveSilicone; CoatingPaint