Nordson-EFD-MeterMix-Guide.pdf - 第3页

3 RECOMMENDED VALVES BY MATERIAL OR VISCOSITY Meter Mix Valves Fluid Material Pneumatic Adhesives & Sealants Abrasive Urethanes High Viscosity (162A Series Mixers) Series 400 ✓ – – Series 400HF – – ✓ Series 450 ✓ – –…

Contents

Meter Mix Valves

Using a Meter Mix Valve ..................................................................3

Series 400 Autovalve .......................................................................5

Series 400HF Autovalve ..................................................................5

Series 450 Autovalve .......................................................................6

Series 450RC Recirculating Autovalve ............................................7

Series 450XT Snuff Back Valve .......................................................7

400 / 450 Autovalves Accessories ..................................................8

2K Accessories ................................................................................ 9

Useful Resources...........................................................................10

Request More Information ............................................................. 11

RECOMMENDED VALVES BY MATERIAL OR VISCOSITY

Meter Mix Valves Fluid Material

Pneumatic Adhesives & Sealants Abrasive Urethanes

High Viscosity

(162A Series Mixers)

Series 400

✓

– –

Series 400HF – –

✓

Series 450

✓

– –

Series 450RC

✓

– –

Series 450XT –

✓

–

If you’re using a meter mix valve, your system may include a valve, mixer,

and accessories. Here are steps to help you select the best possible 2K

meter mix system.

Step 1: Select the Best Spiral Mixer for Your Material

See 2K Selection Guide,

Best Mixer for Your Material.

Keep in mind, when using a meter mix system,

you must use spiral mixers.

www.nordsonefd.com/2KSelectionGuide

Step 2: Select the Best Spiral Mixer for Your Material Viscosity

See 2K Selection Guide,

Best Mixer for Your Material Viscosity.

Material viscosity will help determine

the type of spiral mixer you need.

Step 3: Select Your Meter Mix Valve

Nordson EFD’s meter mix valves are designed to bring the reactive adhesives and sealants into

the static mixer and are engineered for easy disassembly and cleaning. Our pneumatic valves help

increase productivity and eliminate the need for solvent ushing.

Series 450XT Snuff Back Valve

Series 450RC Recirculating Valve

Series 450 Autovalve

Series 400 and 400HF Autovalve

Pneumatic Meter Mix Valve Series

Pneumatic meter mix valves provide ON-OFF functions, and metering in the proper ratio of

A and B components is controlled by the metering pumps. Different manifolds are offered

to assist this metering process. The selection of the manifold for each application depends

on the ow rate, viscosity, and volume ratio.

Using a Meter Mix Valve

Step 4: Select Your Valve Seal

(

for pneumatic valves only)

RECOMMENDED VALVE SEAL BY MATERIAL TYPE

O-Rings Model/Color Recommended for Contact With

Viton (Brown) Methylene Chloride, Alcohol, Carbon Tetrachloride

EP (Black) MEK, Ketones, Acetone

PTFE (Orange) All Adhesives and Sealants

U-Cups Model/Color Recommended for Contact With

UHPME-Cup (Clear) & SS Spring Epoxies Amine Catalyst, Polyesters, Acrylics

PU-Cup (Orange) & Viton O-Ring (Brown) Epoxies General, Polyurethane, Polysulﬁdes

PTFE Cup (Aqua) & PTFE O-Ring (Orange) All Adhesives and Sealants

Step 5: Select Your Manifold

(for pneumatic valves only)

MANIFOLD RECOMMENDATIONS

Standard Flow 1:1 Standard Flow Wide Ratio High Flow 1:1 High Flow Wide Ratio

Mixer Diameter

< 1/4" 400 / 450 400 / 450 – –

≥ 3/8" 450 450 400 400

Effective Ratio* of the Mixer

< 7:1 400 / 450 – 400 –

≥ 7:1 – 400 / 450 – 400

Mixer Diameter = Standard vs. High Flow

Effective Ratio = 1:1 or Wide Ratio

*Effective Ratio is determined by multiplying the mix ratio with the component viscosity.

Using a Meter Mix Valve

Step 7: Select a Metal Jacket for High Pressure Applications

Step 6: Select Your Handle

(for pneumatic valves only)

If you’re dispensing with a Series 400 or Series 450 pneumatic meter mix valve, you’ll need to select

the correct seal based on the type of material being dispensed.

EFD offers a wide variety of seal congurations. Select both the O-ring and U-cup seals based on

chemical compatibility.

Nordson EFD offers electric or pneumatic handles for actuating the air cylinder of the valve. These handles

feature an ergonomic design, which make handheld applications easier to execute.

Choose from three types of electric handles:

1. Pistol grip handle with pneumatic switch

2. Pistol grip handle with electric momentary switch (24 V)

3. Pistol grip handle with electric push on/off switch (24 V)

Keep in mind if you’re using an electric handle, a solenoid from an outside vendor is required.

Nordson EFD recommends the One Piece Metal Jacket attachment

when pressure inside the mixer is greater than 150 psi (10 bar). We offer

a wide variety of one-piece, affordable jackets that can be used over the

mixing nozzle.

Additionally, we offer precision machined jackets for automated dispens-

ing applications.

Nordson EFD’s two-component manifolds connect your meter mix valve to provide a simple method of

bringing the resin and hardener into the mixing nozzle.