Suttner ST-291 Unloader Regulation Valve without Switch
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Suttner ST-291 A high-end unloader which is designed for max. 350 bar / 90 °C / 40 l/min. There are two different versions of the ST-291 available - one with (SEE PANEL BELOW) and one without an electric switch. The model without a switch can be easily retrofitted with it.
Technical specifications
* Easy construction
* Especially soft switching behaviour as the ST-261
* Easily operated adjustment and shifting
* Adjustable minimum and maximum pressure
* Extremely long durability
The unloader ST-291 is equipped with a thread for fixing it at the frame of your high pressure cleaner. According to in-house statements the switch with protection class IP 67 which is used for this valve is "as water-proof
as a submarine". Unlike to other valves the switch does not come into contact with water or other mediums as it is mounted on the outside of the valve and mechanically operated by the piston rod. It is of the directional contact type
i.e. that a contact is produced in any position.
* 40 LPM
* 90 degrees C
* 350 bar
* Forged Brass Body
* 3/8" Female NPT Inlet & Outlet
* 1/2" Female NPT bypass port
