Page 417 - RM_2022

16 Car Wash

What is the difference between the versions freeze stop and weep?
> 0 < 5 bar > 5 bar max. bar The picture illustrates the different effects regarding diverse winter safety methods of high
pressure spray devices. The physical effect that liquids in motion tend to freeze to a lesser extent forms the
basis of both versions. Therefore, both the weep as well as the freeze stop version let water pass through the
valve (in case of different pressures and under the circumstances) even if the spray gun is closed in order to
keep the water which is in piping, hose and spray device in motion.
The weep high pressure spray guns let a reduced water quantity pass through even if the trigger of the gun
freeze stop is not pulled as there is a notch in the seal seat of the valve. This is ensured in high pressure when the high
pressure pump is in operation as well as in low pressure in case of water pipe pressure.
> 0 bar max. bar The so called freeze stop spray guns are equipped with a valve in valve technology. The operating valve which
is driven by the spray gun trigger includes the real automatically operating freeze stop piston. For cleaning
applications the spray gun is opened and closed as usual by the operating valve. The integrated freeze stop
valve only comes into operation when there is low pressure (water pipe pressure). It is opened in a spring
driven way if the pressure is lower than 5 bar. If the pressure increases e.g. by switching on the high pressure
pump the freeze stop valve closes automatically. This improves the comfort of washing as there is no water
coming out of the gun when taking it out of the lance holder.
weep

High pressure spray guns for self-service car wash

ST-2300 freeze stop ST-2300 weep ST-2300 weep

Professional gun. Freeze stop version. Professional gun. Weep version. Professional gun. Weep version.
Max. 310 bar / 45 l/min / 150 °C Max. 310 bar / 45 l/min / 150 °C Max. 310 bar / 45 l/min / 150 °C
R+M Nr. R+M Nr. R+M Nr.
202 300 582 1/4" F 3/8" F swivel 202 300 580 1/4" F 3/8" F 202 300 581 1/4" F 3/8" F swivel
Valve complete ST-2300 ST-301 swivels Seal kits

ST-1100
Standard Weep Freeze stop 1/4" F : 3/8" F. ST-2300 Repair kit ST-301 R+M N r .
R+M No.
R+M Nr. R+M Nr. R+M Nr. R+M Nr. R+M Nr. 201 100 401
1
201 100 40
202 300 490 202 300 491 202 300 457 200 301 050 200 300 100 201 100 403*
201 100 403*
* Year of manufacture from 2016
ST-1100 weep ST-1100 weep ST-1100 without trigger

Professional gun. Weep version. Professional gun. Weep version. Professional gun without valve.
Max. 210 bar / 25 l/min / 150 °C Max. 210 bar / 25 l/min / 150 °C Max. 210 bar / 25 l/min / 150 °C
R+M Nr. R+M Nr. R+M Nr.
201 100 535 1/4" F 3/8" F 201 100 530 1/4" F 3/8" F swivel 201 100 570 1/4" F 3/8" F swivel

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