Safety Valves User Manual

Series LPV-A/F, LPV-D/F Seite 4
9530-060-en Revision 01
TM 7464 Edition 02/2009
1.2 Component identification
Certified low-pressure safety valves LPV-A/F and
LPV-D/F are identified with a certification plate to the
German data sheet A2. This stainless steel plate is
riveted to the valve body.
It contains the following details for example:
TÜV = TÜV symbol
SV = Safety valve
06 = Year of certification (here: 2006)
1058 = Certification number (here: 1058)
d0 = Narrowest flow Ø in mm (here: 45)
D/G = intended for discharging vapours/gases
F = intended for discharging liquids
= Certified coefficient of discharge
(here: 0,5 for D/G and F)
p = Einstellüberdruck in bar (hier: 0,1)
1.3 Screw-in tools for seats
Nominal size
Article No.
[mm] [inch]
50 2“ 9568-96-1016
80 3“ 9568-96-1017
100 4“ 9568-96-1018
1.4 Tightening torques
All screws greased, tighten in diametrically
opposite sequence!
The tightening torques for pipe screws and body
screws mentioned must not be exceeded. For an
exception, see Section 8
, Flange connection valve /
pipe is leaking.
The following tightening torques are recommended.
Pipe screws
, flanges to DIN/ISO
Flange
Nominal
size
Screws
Tightening
torque
[mm] [ISO/DIN] [Nm]
25 4 x M 12 10
50 4 x M 16 26
80 8 x M 16 25
100 8 x M 16 35
150 8 x M 20 65
Pipe screws, DIN/ISO flanges drilled to ASME
F
lange
Nominal size
Screws Tightening torque
[mm] [inch] [ASME] [Nm] [in-lbs]
25 1" 4 x ½“ 8 70
50 2" 4 x R“ 25 220
80 3" 8 x R“ 45 400
100 4" 8 x R“ 35 310
150 6" 8 x ¾“ 80 710
Screws for body / inlet nozzle
Valve type Screws Tightening torque
[Nm] [in-lbs]
LPV-A 50/80
4 x M 12 25 220
LPV-A /100
8 x M 10 20 177
LPV-A
100/150
8 x M 16 25 220
Screws for body / bonnet
Valve type Screws Tightening torque
[Nm] [in-lbs]
LPV-A 50/80,
LPV-D 50
4 x M 12
25 220
LPV-A 80/100
4 x M 12
LPV-A
100/150
8 x M 12
LPV-D 80
8 x M 12
LPV-D 100
8 x M 12
1.5 Pressure-temperature-diagram
When used in the minus temperature range,
the regulations applicable in the country in
question must be observed.
The diagram shows the max. admissible pressure/
temperature load of the body.