Goetze 481 SP Manual De Instrucciones página 10

Pressure reducer 682 / 482
DN
Installed length L
Weight in kg
Field of use
Primary pressure
Secondary
pressure
Materials
Temperature range
3
Installation and Adjustment
The pressure reducer is set at the factory to a secondary pressure of 3 bar (in
standard version) and is to be installed in the pipe without applying stress. After the
reducer we recommend to consider a slow downsection of 5 x D. The flow direction
must coincide with the arrow on the housing. The valve can be installed in any
mounting position. The pipe must be thoroughly flushed prior to installation of the
pressure reducer to prevent impurities picked up by the medium having an impact
on the satisfactory operation.
The pressure gauges are screwed into the sockets using hempor gasket strip and
indicate the prevailing secondary pressure (Fig. 681/481/682/482) or the prevailing
primary and secondary pressure (Fig. 682/482 DN 65 / DN 80 / DN 100). The
desired secondary pressure is set by turning the adjusting spindle at idle pressure
(zero consumption).
Turning the adjusting spindle in clockwise direction increasesthe secondary pres-
sure and turning the spindle in counter-clockwise direction reduces the secondary
pressure. During this adjustment always observe that, based on pressure and fric-
tion losses, the end pressure adjusted at zero consumption is reduced further when
drawing water, in dependence of the quantity drawn off. The set desired value can
be checked at the pressure gauge arranged on the secondary pressure side.
Caution!!!
Before commissioning the pressure reducer, it should be ensured that both
pressure gauge connections on the housing are sealed with pressure gauges or
sealing plugs.
Assembly and maintenance instructions - 481/681, 482/682
20 25
150 160
4,2 4,7
Water, neutral and non-adhesive liquids, compressed air,
neutral and non-combustible gasses
up to 16 bar (PN 16); up to 40 bar (LP up to 25 bar) (PN 40)
Gunmetal / stainless steel or stainless steel / stainless steel
up to 95 °C (DVGW up to 80 °C)
32 40
180 200
5,9 8,6
SP: 1 - 8 bar
HP: 5 - 15 bar
LP: 0,5 - 2 bar
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50 65
230 290
10,5 20
80
310
22