Concentric butterfly valve with loose liner for drinking water and neutral liquids to max. 70°C

Detailed:

Roland’s Series  range of concentric butterfly valves are available in wafer and lug design with lever and gearbox. They provide a cost effective solution to our customers while also manufactured to the expected quality standard associated with the Roland brand. The design is with anti-blowout shaft, hexagon connection, low friction bearings and an EPDM liner with reinforced seating area and profiled flange gaskets.

Features

 •Ductile iron body with long neck for insulation

•Anti-blowout 2-stub shaft with uneven hexagon for safe assembly

•Both shafts carried by low friction PTFE coated bearings

•Loose liner of drinking water approved EPDM with reinforced seating area and integrated, profiled flange gaskets. The shaft holes are dimensioned to create compression around the shaft.

•Slim disc design with internal hexagon for drive shaft connection

•Dew point blocker for heat insulation from lever or wormgear

•Anti blow-out plate at the top and a plug at the bottom

Two POM bearings and an EPDM O-ring at the top as backup sealing

•350 μm epoxy coating, RAL 5017

•Lever of high strength reinforced synthetic material with 10 position notch plate (DN 50-200)

•Self locking gearbox with handwheel, adjustable end stops and mechanical position indicator (DN 250-300)