588 SERIES CHEMICAL INJECTOR

Maximum Operating Pressure — 1500 psi
Maximum Operating Temperature — 180°F

Design Considerations

The SMC 588 Chemical Injector design covers 3/8" downstream injection applications. The 588 Injector is ideal for use with the SMC Hi-Lo Nozzle. A check valve built into the injection barb keeps high pressure rinse water from flowing into the chemical container. The 588 Injector draws chemical when pressure drops through the venturi and the injection barb check valve opens. The rate of injection is controlled by inserting the included metering orifices into the injection barb. Three set rates can be achieved by using no orifice, the .035 Black or .029 Brass orifice per the Injection Capabilities listed below. A wider range of injection capabilities can be achieved by removing any orifice in the injection barb and inserting a Needle Valve in the chemical line.

Options

Material Options

Brass Body, Venturi and Hose Barb
Stainless Ball and Spring
EP Seal

Inlet End

3/8 Female NPT

Outlet End

3/8 Male NPT

Injection Barb

1/4 Hose Barb

System Flow Rate

Injection Capabilities

Model 588-7 Flow Rate – 1.3 to 2.2 GPM Model 588-8 Flow Rate – 2.3 to 2.8 GPM Model 588-9 Flow Rate – 2.9 to 5.7 GPM
Orifice Diameter None .035 (Black) .029 (Brass)	1 CPS = Approx. Viscosity of Water 28 Ounces per Minute 10 Ounces per Minute 7 Ounces per Minute	70 CPS = Approx. Viscosity of #10 Oil 7.5 Ounces per Minute 3.5 Ounces per Minute 2.0 Ounces per Minute

Example of how to order

Injector Size
558-7

SMC Part Number: 558-7 CHEMICAL INJECTOR

SMC Part Numbers are a description of the Injector Model Sized for System Flow Rate
Example: 558-7 CHEMICAL INJECTOR = 1.3 to 2.2 GPM

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