Batch (Syringe) Precision Dispensing Needle Valves
Description
Batch (Syringe) Precision Dispensing Needle Valves are designed to accurately regulate the flow of liquids and gases at low flow rates. They feature a slender, tapered point at the end of the valve stem that is lowered through the seat to restrict or block flow. This design allows for precise control over the dispensation of fluids, making them suitable for applications requiring fine adjustments and small flow rates.
Working Principle
The working principle of precision dispensing needle valves involves a needle or rod with a cone-shaped tip that moves through a seat to control fluid flow. As the needle is lowered, it restricts or blocks the flow, and when raised, it allows fluid to pass through an orifice. The fine threading of the stem and the large seat area enable precise resistance to flow, which is crucial for applications that require gradual flow adjustments or precise flow rates. These valves are particularly useful in preventing damage to delicate gauges by controlling sudden surges of fluid under pressure.
Applications
Precision dispensing needle valves are used in a variety of applications, including the regulation of adhesives, silicones, chemicals, cleaners, paints, coatings, food and beverage products, and lubricants. They are particularly valuable in industries where precise fluid control is necessary, such as in the dispensation of high-viscosity materials or in processes requiring exact metering accuracy.
Advantages over other Precision Dispensing Needle Valves
One of the key advantages of batch (syringe) precision dispensing needle valves is their ability to provide highly accurate flow control, which is essential for applications requiring precise fluid regulation. The design of these valves allows for both on/off control and throttling service, making them versatile for various industrial applications. Additionally, their fine threading and large seat area contribute to their precision and reliability.
Limitations
A notable limitation of needle valves is their unsuitability for applications involving viscous media or slurries. The small flow orifice can easily become blocked by thick materials or solids, which can impede their functionality and lead to maintenance issues.
Considerations
When considering the use of batch (syringe) precision dispensing needle valves, it is important to evaluate factors such as initial costs, operating expenses, durability, accuracy, and maintenance requirements. These valves may have higher initial costs due to their precision engineering, but their accuracy and reliability can lead to cost savings in applications requiring precise fluid control. Maintenance costs should also be considered, as the small orifices may require regular cleaning to prevent blockages, especially when used with viscous fluids.
from Cammda Corporation
CAMMDA Corporation provides a range of Dispensing Tips/Dispensing Needles - available to suit every dispensing requirement. Precision cut stainless steel for general purpose use, molded polypropylene and flexible polyethylene tips allow dispensing in the most restricted areas. Taper tips provide for... [See More]
- Dispensing Application: Dot
- Number of Components: Single Component
- Material Feed: Batch (Syringe)
- Application: AdhesiveSilicone
from Techcon
The Spool Valve is based on a balanced spool design to create a fast "ON/OFF" fluid dispensing function that is not affected by material input pressure. The spool action displaces a portion of the material back into the nozzle during shut off. This creates an automatic "suck-back" anti-drip feature. [See More]
- Material Feed: Batch (Syringe)
- Media Viscosity: 1 to 3.00E6
- Operating Frequency: 400.0
from Nordson EFD
The 741MD Series MicroDot ™ needle valve dispenses very precise micro-deposits down to fractions of a microliter. Pneumatically operated and adjustable, it delivers superior fluid dispensing control. Ideal for automated assembly processes, the 741MD-SS valve ’s adjustable needle stroke... [See More]
- Dispensing Application: Dot
- Number of Components: Single Component
- Material Feed: Batch (Syringe)
- Application: AdhesiveSilicone; Lubricants
from Cammda Corporation
CAMMDA Corporation provides a range of Dispensing Tips/Dispensing Needles - available to suit every dispensing requirement. Precision cut stainless steel for general purpose use, molded polypropylene and flexible polyethylene tips allow dispensing in the most restricted areas. Taper tips provide for... [See More]
- Dispensing Application: Dot
- Number of Components: Single Component
- Material Feed: Batch (Syringe)
- Application: AdhesiveSilicone
from Techcon
The TS5400 Series Needle Valves dispense very precise deposits over a wide range of shot and bead sized due to a minimal dead fluid one. An external stroke control adjustment to fine-tune shot sizes. Easy to maintain, with little or no downtime. The compact design and easy-mount threaded hole allows... [See More]
- Material Feed: Batch (Syringe)
- Media Viscosity: 1 to 100000
- Operating Frequency: 400.0
from Nordson EFD
Nordson EFD ’s Relius ™ line of portable fluid dispensers is easy to use and offer durable, fail-safe construction with less hand fatigue. Ideal for touchups, low-volume assembly, and field work, our handheld fluid dispensers are compatible with all Nordson EFD syringe barrels, pistons,... [See More]
- Dispensing Application: Bead
- Number of Components: Single Component
- Material Feed: Batch (Syringe)
- Application: AdhesiveSilicone; FluxSolder; Lubricants
from Cammda Corporation
CAMMDA Corporation provides a range of Dispensing Tips/Dispensing Needles - available to suit every dispensing requirement. Precision cut stainless steel for general purpose use, molded polypropylene and flexible polyethylene tips allow dispensing in the most restricted areas. Taper tips provide for... [See More]
- Dispensing Application: Dot
- Number of Components: Single Component
- Material Feed: Batch (Syringe)
- Application: AdhesiveSilicone
from Techcon
Needle Valves dispense very precise deposits over a wide range of shot and bead sized due to a minimal dead fluid one. An external stroke control adjustment to fine-tune shot sizes. Easy to maintain, with little or no downtime. The compact design and easy-mount threaded hole allows for easy... [See More]
- Material Feed: Batch (Syringe)
- Media Viscosity: 1 to 100000
- Operating Frequency: 400.0
from Nordson EFD
The xQR41 Series MicroDot ™ needle valve features QR (Quick Release) technology, a 60% smaller form factor, and modular design for new levels of customization in precision fluid dispensing. Ideal for automated assembly processes, the xQR41 MicroDot valve ’s smaller dimensions allow it to... [See More]
- Dispensing Application: Dot
- Number of Components: Single Component
- Material Feed: Batch (Syringe)