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Valves for Precision Dispensing

Diaphragm&High Pressure Precision Valves


Dispensing Valve Selection Chart

Don't know which valve is best for your material or process? The Fisnar valve chart shows all of our valves, along with the materials and applications they are designed for. The chart will open in a new window for easier viewing.

 

VD510 Diaphragm Valve 

The VD510 is a diaphragm valve designed for precise flow control of low to medium viscosity materials.  The diaphragm separates the wetted parts from the moving parts and, therefore, the valve is ideal for dispensing cyanoacrylates, reagents, electrolytes, glues, solvents, paints, alcohol and other volatile substances.

The model DSP501N is a suitable controller for the VD510 valve.

3-Way Valve Operation

When air pressure is applied to the VD510 valve, the valve will open and the material will be dispensed.  At the end of the dispense cycle a spring assists the diaphragm to return quickly to its closed state for immediate shut-off.

Shot sizes may be fine tuned by turning the stroke adjustment at the top of the valve. 

Features
  • Stroke adjustment to fine tune shot size
  • Separated wetted parts
  • Suitable for robot integration
  • Suitable for anaerobic fluids

790HP-LF - High Volume Valve

The 790HP-LF series high-pressure dispense valve is an economic solution when dispensing high viscosity materials such as silicones, RTV, sealant and grease. The 790HP-LF provides a snap-release shut off after dispensing, resulting in a suck-back at the fluid outlet, preventing any drip or post extrusion. 

3-Way & 4-Way Valve Operation

The 790HP-LF is a balanced type "on/off" segmented high-pressure spool valve. Applying a minimum of 50 psi to the air inlet will force the spool forward, under tension from an internal return spring, dispensing the material. 

Releasing the air pressure results in the internal spring snapping back into position and closing the valve.

790HP-LF valves can be used with a 3-way air valve controller DSP501N. Should the operation require automation, a faster closing action can be achieved using the 4-way valve controller VC1195N.

Features
  • High-pressure fluid input up to 2500 psi
  • Suitable for very high viscosity fluids
  • Replaceable seals

VMS400 - Mini-Spool Valve

The VMS400 is a mini-spool type pneumatic valve designed for dispensing low viscosity to high viscosity materials.

 

3-Way & 4-Way Valve Operation

When air pressure is applied to the air inlet of the VMS400 valve, the spool will be forced forward and fluid will be dispensed. The VMS400 valve has a suck-back effect that eliminates lumping at the end of the needle after dispensing. Turning the  adjustment control at the top of the valve regulates the amount  of suck-back.

Shot size and flow rate are controlled by the tip size, fluid pressure and the duration that the valve is open. 

The model DSP501N is a suitable controller for the VMS400 valve. For faster actuation, the 4-way VC1195N valve controller is recommended. 

 

Features
  • High-pressure fluid input up to 700 psi
  • Suitable for high viscosity fluids
  • Adjustable "suck-back" fluids

HP600S - small shot, HP600L - large shot

The HP600S and HP600L high-pressure dispense valves are a robust long-life solution for dispensing high viscosity materials such as silicone, RTV, sealant and grease. Both valves are adjustable for shot size. 

4-Way Valve Operation

The HP600S & HP600L are balanced type "on/off" segmented high-pressure needle valves, which require a model VC1195N 4-way valve controller.  Applying a minimum of 56 psi to the air inlet will retract the needle allowing material to flow. Switching the air signal on the controller will return the needle to its seated position closing the valve.

Features
  • High-pressure fluid input
  • Adjustable for shot size
  • 4-way operation - quick shut off
  • Suitable for very high viscosity fluids
  • Replaceable seals

HPN200 High Pressure Needle Valve

The HPN200 is a high-pressure needle valve suitable for high viscosity materials at fluid pressures up to 1,700 psi. It also features a shot size stroke adjustment, which can easily fine tune the front closing needle for precise deposits.

3-Way & 4-Way Valve Operation

The valve is opened and closed by applying pressure to the ports. The valve may be operated with 56 psi.  

Material is supplied to the stainless steel body through a 1/4" NPT female port. Fluid pressure may be as high as 1,700 psi.

Shot size and flow rate are controlled by the tip size, fluid pressure and the duration that the valve is open. 

The model DSP501N is a suitable 3-way controller for the HPN200. For faster actuation, the 4-way VC1195N valve controller is recommended.

Features
  • High-pressure fluids up to 1,700psi
  • Stroke adjustment to fine tune shot size
  • Stainless steel fluid body

800RV Constant Bead Valve

The 800RV is a constant-bead, dispense valve. Designed to deliver a uniform bead dimension irrespective of any air pressure build-up at the opening of the valve and at the start of the bead. This neutralizing pressure feature ensures a perfect bead with a clean cut-off of the material at the end of the bead path.

Suitable for medium to high viscosity materials such as silicone, RTV, sealant and grease. The valve is available as model 800RV-LL with a Luer lock fluid outlet and as 800RV-N with 1/4%u201D NPT fluid outlet.

4-Way Valve Operation

The 800RV is a two-stage pressure isolation valve. Applying a minimum of 60 psi to the air inlet will cause the valve to open and dispense the material. 

The valve is controlled by a 4-way valve controller - VC1195N, which will control the opening and closing of the valve. 

Features
  • Suitable for high viscosity fluids
  • Constant uniform bead dispensing
  • Close tolerance

700RV - High Volume - Heavy Duty

The 700RV is a high-pressure, constant-bead, dispense valve. Designed for heavy duty production environments. Will deliver a uniform bead dimension irrespective of any air pressure build-up at the opening of the valve and at the start of the bead. This neutralizing pressure feature ensures a perfect bead with a clean cut-off of the material at the end of the bead path.

Suitable for high viscosity materials such as silicone, RTV, sealant and grease.

4-Way Valve Operation

The 700RV is a two-stage pressure isolation high viscosity valve. Applying a minimum of 56 psi to the air inlet will cause the valve to open and dispense the material. 

The valve is controlled by a 4-way valve controller - VC1195N, which will control the opening and closing of the valve. 

Features
  • High-pressure fluid input up to 900psi
  • Suitable for very high viscosity fluids
  • Close tolerance

 

For more information click here:

Valves for Precision Dispensing

 

 

 

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