Danfoss SFV 15 - 25 and SFA 15 Installation guide
- Type
- Installation guide
Installation Guide
Safety relief valves
SFV 20-25, SFA 15
© Danfoss | DCS (MWA) | 2015.08 DKRCI.PI.IB0.A7.ML / 520H1621 1
148R9505
148R9505
Installation / Instalação / 安装说明
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5 Fig. 6
SFA 15: DNyy = 20 (¾ in.)
SFV 20: DNyy = 25 (1 in.)
SFV 25: DNyy = 32 (1
1
/
4
in.)
SFA 15: DNxx = 15 (½ in.)
SFV 20: DNxx = 20 (¾ in.)
SFV 25: DNxx = 25 (1 in.)
2 DKRCI.PI.IB0.A7.ML / 520H1621 © Danfoss | DCS (MWA) | 2015.08
DANSK
Installation
Kølemidler
Anvendelig til HCFC, HFC, R717
(ammoniak) og R744 (CO
2
)
Brændbare kulbrinter anbefales ikke.
Ventilen bør kun bruges i lukkede kredsløb.
Kontakt venligst Danfoss, hvis du ønsker
ere oplysninger.
Temperaturområde
–30/+100°C.
Trykområde
SFV 20-25: 25 bar g (362 psi g).
SFA 15: 40 bar g (580 psi g).
Danfoss Industrial Refrigeration A/S
leverer sikkerhedsventiler, der er justeret
til at kunne klare et vist tryk (angivet på
ID-pladen) og forsejlet. Danfoss Industrial
Refrigeration garanterer et korrekt tryk, så
længe sejlet ikke er brudt.
Ventilen skal installeres med ederhuset
i oprejst position (g. 1). Når sikkerheds-
ventilen installeres, er det vigtigt at undgå
termisk og dynamisk tryk (vibrationer) (g.
2). Ventilens afgangsrør skal konstrueres
således, at der ikke kan trænge snavs ind i
ventilen (g. 3).
Et U-rør fyldt med olie beskytter eektivt
mod, at vand og snavs trænger ind, i
tilfælde, hvor ventilernes afgangsrør fører
ud til omgivelserne (g. 4).
Ventilen er konstrueret til at kunne modstå
et højt indre tryk. Uanset hvilket system,
der er tale om, skal det være konstrueret
til at undgå væskefælder og reducere
risikoen for hydraulisk tryk forårsaget af
termisk ekspansion. Sørg for, at ventilen
er beskyttet mod kortvarige tryk såsom
“væskeslag” i systemet.
Svejsning
Hvis svejsettings anvendes, bør disse
afmonteres, mens der svejses (g. 5).
Kun materialer og svejsemetoder, der er
kompatible med angens materialer, kan
bruges til svejsning på angen.
Undgå svejserester og snavs i husets og
rørenes gevind.
Montering
Fjern svejserester og snavs fra rør og huset,
før ventilerne monteres. Monter ventilerne
som vist i g. 6.
Farver og identikation
Ventilerne er belagt med zink-krom fra
fabrikkens side. Hvis der er behov for
yderligere rustbeskyttelse, kan ventilerne
males.
Nøjagtig identicering af ventilen udføres
ved hjælp af ID-pladen på ventilhuset.
Kontakt Danfoss i tilfælde af tvivl.
Danfoss påtager sig intet ansvar for fejl eller mangler.
Danfoss Industrial Refrigeration forbeholder sig ret til at
ændre produkter og specikationer uden forudgående
varsel.
ENGLISH
Installation
Refrigerants
Applicable to HCFC, HFC, R717 (Ammonia)
and R744 (CO
2
).
Flammable hydrocarbons are not
recommended. The valve is only
recommended for use in closed circuits. For
further information please contact Danfoss.
Temperature range
–30/+100°C (–22/+212°F).
Pressure range
SFV 20-25: 25 bar g (362 psi g).
SFA 15: 40 bar g (580 psi g).
Danfoss Industrial Refrigeration A/S is
supplying safety valves adjusted for a
certain pressure (indicated on the ID-plate)
and sealed. Danfoss Industrial Refrigeration
guarantees correct pressure as long as the
seal remains unbroken.
The valve should be installed with the
spring housing upwards (g. 1). By
mounting of the safety valve it is important
to avoid the inuence of thermic and
dynamic stress (vibrations) (g. 2). The
outlet pipe of the valve must be designed
as to prevent dirt from penetrating into the
valve (g. 3).
For valves with outlet in the open air, an
oil lled U-pipe is an eecient protection
against the entrance of water and dirt (g. 4).
The valve is designed to withstand a high
internal pressure. However, the piping
system should be designed to avoid liquid
traps and reduce the risk of hydraulic
pressure caused by thermal expansion. It
must be ensured that the valve is protected
from pressure transients like “liquid
hammer” in the system.
Welding
If welding ttings are applied, these
should be dismounted during the welding
process (g. 5). Only materials and welding
methods, compatible with the ange
material, must be welded to the ange.
Avoid welding debris and dirt in the
threads of the housing and pipes.
Assembly
Remove welding slag and dirt from tubes
and housing before the valve is mounted.
Mount the valve as shown in g. 6.
Colours and identication
The valves are Zinc-Chromated in the
factory. If further corrosion protection
is required, it can be painted. Precise
identication of the valve is made via the
ID-plate on the valve housing.
In cases of doubt, please contact Danfoss.
Danfoss accepts no responsibility for errors and
omissions. Danfoss Industrial Refrigeration reserves the
right to make changes to products and specications
without prior notice.
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Danfoss SFV 15 - 25 and SFA 15 Installation guide
- Type
- Installation guide
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