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Type
06505
06506
06C01
06602
06603
50051.0004
50051.0011
6
Operation
The maximum permissible pressure drop in the inlet lines to the safety valves may not exceed
the 3 % pressure difference between the response pressure and superimposed back pressure
on the safety valve.
Vibrations are to be avoided.
Check the following points prior to start-up:
All mounting and installation work are completed.
Compare the material, pressure, temperature and installation position with the layout plan for
the pipework system.
Dirt and residues have been removed from the pipeline and safety valve in order to prevent
leaks.
6.1
Liftability (manual actuation for testing)
Liftable safety valves are equipped with an appropriate device above the spring cap.
Liftable safety valves can be made to open at ≥85 % of the set pressure without aids.
Typical lifting cases are initial commissioning, after breaks in operation and functional testing; the
procedure is as follows:
Operating instructions
max. tightening torque [Nm]
Male thread
Material
Thread
G
1''
200
11/4''
410
CW614N
11/2''
910
2''
950
1''
260
11/4''
650
1.4408
11/2''
1400
2''
1400
1.4571
1''
280
CW614N
1/2''
70
1.4301
1/2''
CC491K
1''
1.4301
1/2''
110
CC491K
1/2''
1/4''
18
CW614N
3/8''
50
Step 1: Pull the lifting knob / pull-ring upwards until blow-off
of the operating medium is clearly audible.
Step 2: Release the lifting knob / pull-ring.
Step 1: Pull the lifting lever away from the spring cap
until blow-off of the operating medium is
clearly audible.
Step 2: Release the lifting lever again.
herose.com
Female thread
NPT
R; Rc
G
NPT
100
90
48
110
70
180
110
250
33
12
R; Rc
90
150
220
21
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