Full Product Manual

Construction
11
Grundfos COMFORT
4
Pump housing
The pump housing is designed in such a way that a
high hydraulic efficiency is achieved when the energy
produced by the impeller is converted into pressure.
The pump housing thread enables connection to
standard pipe dimensions.
Fig. 16 Pump housing with and without valves
Isolating valve and non-return
valve
The COMFORT pump types BX (Europe) and BU
(USA) have a built-in isolating valve and a non-return
valve.
The isolating valve ensures that maintenance can be
carried out while the suction side is isolated.
The non-return valve isolates the discharge side
during maintenance.
Seal ring
The COMFORT pump has just one seal ring between
the spherical motor and the pump housing. The seal
ring material is resistant to hydrolysis and ageing, thus
lasting the entire pump life.
Fig. 17 Seal ring
Union nut
The union nut ensures that motor and pump housing
are tightly connected. Thanks to the thread type, the
seal ring is pressed evenly over the entire seal face.
Fig. 18 Union nut
TM06 8283 5016TM06 5206 4115
TM06 5207 4115