Emerson Tartarini V Series

V Series
2
P.E.D. CATEGORIES AND FLUID GROUP
The V Series relief valves are designed as functional
equipments and they are typically used in gas pressure
reducing stations for overpressure protection by releasing
small amounts of gas in the event of not perfect pressure
relief valve closing.
Table 1. P.E.D. Category for V Series Relief Valves
TYPE CATEGORY FLUID GROUP
V/50 - V/51 - V/52 SEP
1V/60 - V/61 - V/62 I
V/20-2 SEP
If V series relief valve is used as full-capacity relief
device (according clause 8.3.2 EN 12186) , downstream
equipments protected by this products shall have technical
features such as not to be category higher than following
category (according Directive 97/23/EC “PED”).
CHARACTERISTICS
End Connection Styles
V/50 Series
1” x 1 1/2” GAS
V/60 Series
1 1/2” x 2” GAS
Type V/20-2
1” x 1” NPT
!
WARNING
The pressure/temperature limits indicated
in this instruction manual or any applicable
standard or code limitation should not be
exceeded.
Maximum Allowable Pressure
V/50 Series: 4 bar
V/60 Series: 2.5 bar
Type V/20-2: 100 bar
Outlet Set Pressure Ranges
V/50 Series: 0.025 ÷ 2 bar
V/60 Series: 0.025 ÷ 2 bar
Type V/20-2: 1.5 ÷ 40 bar
Minimum/Maximum Allowable Temperature (TS)
See label
Temperature
Standard Version : Working -10° to 60°C
Low Temperature Version : Working -20° to 60°C
Materials
V/50 and V/60 Series
Body / cover : Aluminium
Seat : Brass
Diaphragms : Fabric Nitrile (NBR) + PVC
Pads : Nitrile (NBR) rubber
Type V/20-2
Body : Brass
Pad retainer : Brass
Pad holder : Brass
Adjusting nut : Brass
Pad : Nitrile (NBR) rubber
LABELLING
APPARECCHIO TIPO /DEVICE TYPE
Wau
DN2
DN1
MATRICOLA
bar
bar
SERIALNr.
°C
FLUIDO GRUPPO
FLUIDGROUP
ANNO
YEAR
HARMONIZEDSTD.
bar
NORMEARMONIZ.
LEAKAGECLASS
CLASSEDI PERDITA
FUNCTIONALCLASS
CLASSEFUNZIONALE
bar
Wao
Wa
TS
bar
pao
Cg
PS
body
bar PT
=x
PS bar
PS
covers
EN
bar
pmax
xxxx
body
Notified
BOLOGNAITALY
O.M.T.
1.5Note 4Note 3
Note2
Note 1
1
-
Figure 2. Label for V Series Relief Valves
Note 1: See “Characteristics”
Note 2: Year of manufacture
Note 3: Class 1: -10°/60°C
Class 2: -20°/60°C
Note 4: V/50 Series : 4 bar
V/60 Series : 2.5 bar
Type V/20-2 : 100 bar