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  1. Home
  2. Foam Equipment, Chemical Injectors & Accessories
  3. ST-168 BYPASS INJECTOR + COMPRESSED AIR MODULE + METERING VALVE 1.7mm

ST-168 BYPASS INJECTOR + COMPRESSED AIR MODULE + METERING VALVE 1.7mm

ST-168 BYPASS INJECTOR + COMPRESSED AIR MODULE + METERING VALVE 1.7mm

SKU

Description

The ST-168 does not require a separate air intake foam lance to generate foam. The required air needed for foaming is fed into the injector via a compressed air connection. The use of a wash gun with a large cross section such as ST2720, ST2725, ST3100, or ST3225 food industry gun with triple nozzle is required. A suitable DN12 food hose is needed, such as blufood or Hygiene Ultra hoses.

Technical Spec

Inlet 1/2" Female
Outlet 1/2" Female
Max LPM 80 LPM
Material Stainless Steel
Bar 350
Colour Blue
Max Temp °C 100
Nozzle Size 1.7mm
DN Internal Diameter 9mm
Commodity Code 8413810090
Weight 1.38
Country of Origin Germany

Datasheets

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Overview

easyfoam365+ product line has been enlarged The injectors completely made out of stainless steel make it possible to open two cross section areas (50 mm2 each) in order to guarantee a smooth use without drop in pressure when washing/rinsing. This ensures that the injector can be permanently kept in the high pressure line, also at the time when large water quantities are used e.g. in the agriculture or food industry. The cleaning capacity when cleaning and rinsing is not affected at all. A lever makes it possible to change from the cleaning and rinsing mode into injector operation. When using the cleaning mode, there are two bore holes guiding the high pressure water parallel to the injector (bypass mode). When using the injector the available water quantity is guided through the injection area. In order to produce foam a foam lance without air intake is absolutely required. The air quantity needed for foaming is supplied by an additional connection positioned at the injector. The use of a spray gun with large cross section areas such as for example ST-2720, ST-2725, ST-3100 or ST-3300 with suitable lances and foam hoses (blufood) is recommended. The injector ST-168 is especially designed for low and medium pressure applications from a water inlet pressure of 5 bar and it generates an excellent foam when being provided with the required quantity of compressed air. The easyfoam365+ injector which is available in the nozzle size of 1.2 - 2.8 mm meets the requirements in every field of application in the professional cleaning industry. The dosing is adjusted by one of the 10 nozzle inserts which are included in the consignment. As an alternative there are also versions with the infinitely variable dosing unit ST-161 available. The connection for chemicals equipped with an integrated check valve and an intake for the nozzle inserts has a hose connector for chemical suction hoses being 9 mm in diameter in order to suck in especially viscous fluids. The direction of flow is marked with arrows to guarantee a smooth installation. 1/2" F : 1/2" F. Injector ST-168 with metering valve ST-161 and compressed air module (hose tail 9 mm). Max. 350 bar / 100 °C
Click here to view on page 348 of 2020 R+M Catalogue

Help with sizes

Foam Injector size guide.

Use the below chart to help you select the correct injector size.

Pressure

Flow

20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250
10 2.2
(15) 		2.0
(15)
1.8
(13)
1.7
(10)
1.6
(075)
 		1.5
(07)
1.4
(07)
1.3
(05)
11 2.2
(15) 		2.0
(15) 		1.9
(13) 		1.8
(13)
1.7
(10)
1.6
(075)
 		1.5
(07)
1.4
(07)
1.3
(05)
12 2.2
(15) 		2.1
(15) 		2.0
(15) 		1.9
(13) 		1.8
(13)
1.7
(10)
1.6
(075)
1.5
(07)
1.4
(07)
 		1.3
(05)
13 2.2
(15) 		2.1
(15)
1.9
(13)
1.8
(13)
1.7
(10)
1.6
(075)
1.5
(07)
1.4
(07)
14 2.2
(15) 		2.1
(15) 		2.0
(15)
1.9
(13)
1.8
(13)
1.7
(10)
1.6
(075)
1.5
(07)
1.4
(07)
15 2.2
(15) 		2.1
(15) 		2.0
(15)
1.9
(13)
1.8
(13)
1.7
(10)
1.6
(075)
1.5
(07)
 		1.4
(07)
16 2.2
(15) 		2.1
(15)
2.0
(15)
 		1.9
(13)
1.8
(13)
1.7
(10)
1.6
(075)
18 2.3
(20) 		2.2
(15)
2.1
(15)
2.0
(15)
1.9
(13)
1.8
(13)
1.7
(10)
 		1.6
(075)
19 2.3
(20) 		2.3
(20) 		2.2
(15)
2.1
(15)
2.0
(15)
 		1.9
(13)
1.8
(13)
1.7
(10)
21
1.9
(13)
1.8
(13)
1.7
(10)
Using the chart

You will need to know the flow rate and pressure of the pressure washer or system that the injector is to be installed.

Firstly select the closest flow rate (round up if required)

Then move right across the chart until you are at the closest pressure column.

The top number (1.6) is the injector size.

For foam injectors not using compressed air the number in brackets underneath is the correct ST75 foam lance size required.

Alternative
Injector Size Injector Part No ST75 Size ST75 Foam Lance ST72 Foam Lance
1.3 200160500 05 200075576 200072633
1.4 200160505 07 200075572 200072633
1.5 200160510 07 200075572 200072633
1.6 200160515 075 200075572 200072633
1.7 200160520 10 200075573 200072625
1.8 200160525 13 200075578 200072625
1.9 200160530 13 200075578 200072625
2.0 200160535 15 200075579 200072629
2.1 200160540 15 200075579 200072629
2.2 200160545 15 200075579 200072629
2.3 200160550 20 Please Contact 200072629

Equipment to be used with foam injectors using compressed air

Name  Food Grade Under 25 l/min  Above 25 l/min  Foam Lance Food Hose LTF (Low trigger force technology)
st2720 wash gunST-2720 st2300 wash gun st2300 wash gun -  foam lances food hose low trigger force technology
ST-2725ST-2725 st2300 wash gun st2300 wash gun -  foam lances food hose low trigger force technology
ST 3300 wash gunST-3300 st2300 wash gun st2300 wash gun -  food hose -
ST3100 wash gunST-3100 st2300 wash gun st2300 wash gun - foam lances food hose -
ST3500 wash GunST-3225 st2300 wash gun st2300 wash gun - Foam Blaster food hose low trigger force technology
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