Emerson Tartarini PRX Series - PRX Series Technical Specifications; Key Technical Specifications

2
PRX Series
LABELLING
Note 1: See “Characteristics”
Note 2: Year of Manufacture
Note 3: Class 1: -10° to 60°C
Class 2: -20° to 60°C
Note 4: See “Characteristics”
INSTALLATION
a. Make sure that specications on the pilot plate comply
with the intended use.
b. Make sure that all connections are correctly made.
STARTUP
Refer to the regulator or slam-shut valve startup instructions.
ADJUSTMENT
Only for PRX/120, PRX/125, PRX-AP/120
and PRX-AP/125 Pilots:
Adjusting response stability and rapidity is achieved by
means of the appropriate adjusting screws, R (restrictor) and
D (damper).
The register D is normally completely unscrewed; by
screwing the register, the response of the regulator can be
slowed down.
The register R is normally completely screwed; in case of
hunting of the set pressure, we suggest unscrewing slowly
the register until pressure steadiness is reached.
By unscrewing the register, the set pressure decreases;
intervene on register screw (key 1) in order to re-establish
the correct pressure.
CAUTION
If register R is completely unscrewed, the
regulator can not deliver the maximum
requested capacity.
In order to better assess the e󰀨ects of
adjustments, it is advisable to turn the
adjusting screws only one fourth of a turn
at a time and to verify the new conditions
before carrying out the further rotation.
PERIODICAL CHECKS
Only for PRX/120, PRX/125, PRX-AP/120
and PRX-AP/125 Pilots:
Gas-tightness Test
When starting up the regulator, and at regular intervals,
check gas tightness as follows:
a. Slowly close downstream cut-o󰀨 valve.
b. In order to avoid excessive lock-up pressures, close the
APPARECCHIO TIPO /DEVICE TYPE
Wau
DN2
DN1
MATRICOLA
bar
bar
SERIALNr.
°C
FLUIDO GRUPPO
FLUIDGROUP
ANNO
YEAR
HARMONIZED STD.
bar
NORMEARMONIZ.
LEAKAGECLASS
CLASSEDI PERDITA
FUNCTIONALCLASS
CLASSEFUNZIONALE
bar
Wao
Wa
TS
bar
pao
Cg
PS
body
bar PT=xPS bar
PS
covers
EN
bar
pmax
BOLOGNAITALY
O.M.T.
1.5Note 4Note 3
Note 2
Note 1
1
-
DIMENSIONS AND WEIGHTS
Table 2. Dimensions (mm) and Weights (kg)
CODE PRX FULL RANGE PRX-AP FULL RANGE
A 65 65
B 215 257
Weight 3.2 3.5
Figure 2. Label for PRX Series Pilots
Figure 3. PRX Series Pilots Dimensions (mm)
A
A
B
B