Specification Sheet

Foot valves and non-return valves
7
Grundfos valves
3
Head loss without spring
Fig. 9 Head loss curves for BV and MV
Head loss with spring
Fig. 10 Head loss curves for BVF and MVF
Materials
BV, MV 4" to 6"
BV and MV valves are one-way valves with valve
casing in stainless steel or nickel-resist alloy and other
components in stainless steel. Foot valves (BV) in
stainless steel are only available in the 6" dimension.
BV 4" to 6" in nickel-resist alloy
MV 4" to 6" in nickel-resist alloy
BV 6" in stainless steel.
Applications
The foot valve is fitted to the inlet pipe in boreholes to
secure the suction condition of the pump.
The non-return valve is fitted in large pipe systems to
avoid backflow.
Thanks to the combination of materials, the BV and
MV valves can be used in pipe systems for slightly
aggressive liquids.
Head loss
Fig. 11 Head loss curves for BV and MV
TM00 1192 4697TM00 1193 4697
Valve components Materials DIN W.-No.
Valve casing
Cast iron 0.6020
Bronze 2.1176.01
Valve seat, vulcanised Stainless steel, NBR 1.4301
Valve cone, vulcanised Stainless steel, NBR 1.4301
Spring Stainless steel 1.4301
Spring retainer Stainless steel 1.4301
Nipple (MV) Bronze 2.1096.01
Strainer (BV) Bronze 2.1096.01
Maximum operating pressure: 25 bar.
Liquid temperature: 0 °C to +70 °C.
TM00 7022 0396
0 20 40 60 80 100 120 140 160 Q [m /h]
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
H [m]
6"
4" & 5"