Issue
Dimension comparison when replacing MZF valve with VG311 or V321
Environment
MZF
V321
VG311F
Cause
Replacing Satchwell MZF valves, the new valve is a different size, i.e. larger.
Resolution
The Satchwell MZF valve is a physically smaller valve when compared to other manufacturers valves of the same DN. The only solution is to modify the pipework.
For the valve datasheets click on the relevant valve type MZF VG311F V321
The table below details the differences.