This appraisal is for a range of seal-on-body butterfly valves with wafer, lugged and flanged ends in sizes from DN 50 to DN 600.
The butterfly valves are rated as PN16 for sizes up to DN 300 and PN10 for sizes between DN 350 and DN 600.
The liner for the wafer and lugged valves is vulcanised to the valve body whilst the liner for the flanged valves is bonded to the valve body.
Flanges are flat faced and compatible with AS4087 Fig B5 (PN16).