Grundfos DDC Data Booklet

Accessories for small dosing pumps up to 60 l/h
45
Accessories for dosing pumps
8
Multi-function valves, pressure
relief valves, pressure loading
valves
Multi-function valves combine the functions of
pressure relief valves and pressure loading valves. In
addition, they allow deaeration of the pump and
emptying of the outlet line for maintenance.
Pressure relief valves protect the pump and the
outlet-side installations against excessive pressure. All
pressurised dosing installations should include a
pressure relief valve.
Pressure loading valves maintain a certain
counterpressure for the dosing pump.
They are used in the following applications:
• too low counterpressure or no counterpressure at all
• fluctuating system pressure with outlet-side
pulsation damper.
• To prevent syphoning, when the inlet pressure is
higher than the counterpressure.
Fig. 42 Multi-function valve, pressure relief valve,
pressure loading valve
Multi-function valves
A multi-function valve is mounted directly on the pump
outlet side. The top connection is for the outlet line, the
side connection leads the relief liquid back into the
tank.
• Loading pressure, adjustable from 1 to 4 bar, is
factory-set to 3 bar.
• Relief pressure, adjustable from 7 to 16 bar, is
factory-set to 10 bar or 16 bar.
• Maximum operating pressure: 16 bar.
• Hose connection set: 4/6 mm, 6/9 mm, 6/12 mm,
and 9/12 mm.
Dimensions
Fig. 43 Multi-function valve
Technical data
TM04 8287 0411
TM04 8288 0411
92
139
45
47
45
G 5/8
Ø 60
Max. flow rate
[l/h]
Material Product number
Body Connections Gasket Diaphragm
Relief pressure
10 bar
Relief pressure
16 bar
60 PVDF
PP
FKM PTFE 95704585 95730821
EPDM PTFE 95704591 95730822
PVC
FKM PTFE 95730807 95730823
EPDM PTFE 95730808 95730824
PTFE PTFE 95730809 95730825
PVDF
FKM PTFE 95730810 95730826
EPDM PTFE 95730811 95730827
PTFE PTFE 95730812 95730828

Grundfos DDC Specifications

General

Brand	Grundfos
Model	DDC
Category	Water Pump
Language	English