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BauderBLUE ST B Water flow restrictor
  • BauderBLUE ST B Water flow restrictor

BauderBLUE ST-B

Green and Blue roofs

The BauderBLUE ST-B adjustable flow restrictor is fitted into the RWO and is used to control the flow of water from a blue roof. It is part of the Bauder blue roof system and is comprised of four parts: (1) baseplate with stainless steel slide control, (2) overflow pipe, (3) baseplate inner and (4) outer seal. The polyamide baseplate fits within the 70 mm vertical outlet, with the EPDM outer seal creating a watertight fit. The HDPE Overflow slots into the central hole of the baseplate with an inner EPDM seal preventing any leaks.

The BauderBLUE ST adjustable flow restrictor is designed to be fitted into a standard Bauder Bitumen Blue Roof Vertical Outlet DN70 as part of a Bauder Blue Roof system. There are two versions of the restrictor, one for use with Bauder’s hot melt system and the other used with Bauder’s differing total roofing system. 

The baseplate has a stainless-steel slide plate which can be set to 6 positions to control the flow rate for the outlet. The correct position for the plate will be shown on the Bauder Blue Roof Calculation Sheet. 


Product details

CharacteristicTest MethodUnitValue
MaterialPolyamide + stainless-steel Slide Control 
Baseplate heightmm30 (42 mm including Slide Control) 
Diameter (c)mm196
Overflow pipe heightmm250 maximum as Std (cut down to H-Max) 
Overflow Inner Diametermm69

All further technical information is stated on the data sheet. 
This product does not require a Declaration of Conformity (DoC) or Declaration of Performance (DoP). 

BauderBLUE ST B Water flow restrictor