IOM - WAFER SWING CHECK VALVES, UNIWAT® CV
©COMEV
AL
V
AL
VE SYSTEMS
Technical Dept. Ref. IOM - W
AFER SWING CHECK V
AL
VES, UNIW
AT® CV - Ed.20/06
Comeval V
alve Systems reserves the right to alter any technical data contained in this Manual without prior notice. Regularly updated data on www
.comeval.es
4.4 Marking/nameplate
Nameplate/label description of the valve:
4.5 CE marking. Intended use acc. to PED
* Classification of fluids group 2 acc. to Directive 2014/68/EU, Article 13.
Check valve selection, material compatibility, pressure and temperature limits and other essential parameters. Ensure
proper safety devices/measures are implemented to prevent exceeding intended use of the product. Contact the manu
-
facturer for advice in case of pressure tests exceeding the intended use. Refer to Data Sheet and consult the manufac
-
turer for further information.
5. INSTALLATION
5.1 General remarks on installation
The following points should be taken into account in addition to the general principles governing installation work:
Page 3
ATTENTION!
- Before installation, make sure previous chapters are thoroughly followed.
- Ensure safe access and working conditions for proper performance.
- Observe all applicable safety measures during installation.
- Remove remaining packing/storage protection if present.
- Lay pipelines such that damaging transverse, bending and torsional forces are avoided.
- Protect valves from dirt during construction work. The interior of the valve and the pipeline must be free of fo
-
reign particles.
- Protect the valve soft parts from heating caused by welding works at the plant during commissioning.
- Avoid mechanical damage to the disc and O-rings.
- Follow the arrow in the label for normal flow direction for installation.
The valve can be installed either in vertical
pipelines with normal flow upwards or in horizontal pipelines. The valve is supplied with an eyebolt to ease its
correct positioning and assembly.
Please consult with our Technical Department in the following cases:
- Working pressures below 0,1 bar / low flow, that can lead to partial opening/instable range.
- Very low back pressure when leakage in the reverse flow direction is not permissible.
- There is a crushing hazard between the disc and the seat. Ensure the disc is in rest position in case a hand is
introduced inside the valve.
- When installing the valve, there is a crushing hazard between valve and pipe system. Mind the hands to avoid it.
- VALVE ASSEMBLY IN THE PIPE SYSTEM: The valve is wafer type for installation between flanges. Remove
impurities in the contact faces. The valve is comprehensive of body O-rings, hence do not add additional gaskets
between valve and counterflanges. Pipe must be properly aligned and supported. Introduce two consecutive bolts
(at bottom in horizontal pipeline). Then hold the valve by the eyebolt (eyebolt must remain on top in horizontal
pipeline) and introduce it between counterflanges by the opposite side down to the bolts. Once the valve centred
between counterflanges, set the rest of bolts and tighten with nuts in a crosswise, moderate and uniform manner.
Do not use tightening to correct misalignments or gap between valve and counterflanges. This could lead to
tensions and damages.
PS
DN
≤300
350-600
10
16
Liquids of group 2*compatible with materials of construction,
acc. to
Directive 2014/68/EU
Annex II table 9 up to category I
Marcado
Descripción
CE-Marking
Manufacturer logo
www.comeval.es
Website of manufacturer
UNIWAT®
Brand
FIG
Valve type (CVCCE, CVIIE…)
S
Seat material (EPDM, NBR))
Y.VV
Manufacturing year
(Y.16 = 2016)
ZZZZZ-N
Batch / Serial no.
TS
Max. / min. temperature
B
Body material
D
Disc material
PED 2014/68/EU
Directive 2014/68/UE
SEP
Sound Engineering Practice
F
Counterflanges to be used
(PN10, PN16…)
PN
Nominal pressure
(max. pressure in bar)
DN
Nominal diameter
Arrow showing normal flow
direction
