handtmann 33501 User Manual

Safety relief valves
33501, 33502, 33503, 33521, 33601, 33602, 33603, 33621
Installation and Commissioning
BA(k)_033501.06_EN
2023-07-27 Albert Handtmann Armaturenfabrik GmbH & Co. KG 21 / 30
8 Installation and Commissioning
Before you start with the installation and commissioning:
• Check the current system status (pressure, temperature, medium) against the
technical data.
• Check the valve for external and internal damage.
• Check the valve body in the area of the valve disc for dirt.
ATTENTION
Note
To avoid risks to life and health, be sure to read the general safety instructions.
The function of the valve must always be checked
• after the work has been carried out,
• before the system is put into operation for the first time, and
• after each disassembly and assembly of the valve.
8.1 Installation Instructions
• Safety relief valves are installed in a vertical or horizontal position.
For pressures of < 1 bar, the factory pressure setting also occurs in this installation
position.
• Safety relief valves with a detachable connection are installed in the piping system free
of tension.
• Safety relief valves for welding in must be disassembled first. For this purpose, the
upper part of the valve is removed from the housing. The housing is then welded into
the piping system free of tension.
• The welding work (TIG, forming gas) should only be carried out by qualified welders
(EN 287-1).
• There must be sufficient free space around the installed valve for assembly and
maintenance tasks later on.
• Shut-off devices that impair the function must not be installed on the upstream and
downstream sides of the safety relief valve.
• The pipe cross-section of the supply and outflow pipes must at least correspond to
that of the valve inlet and outlet.
• When the safety relief valves are installed horizontally, the exhaust manifold must face
downward (draining).
• Exhausting must be performed without pressure. An exhaust line should empty into
corresponding draining or collecting facilities without constituting a hazard.
• Exhaust lines for fluids must be routed downward and must empty into a receptacle
without constituting a hazard (provide for complete draining).
• Exhaust lines for vapours and gases must be routed upward and must empty into
a receptacle without constituting a hazard (provide for a condensate separator).
• If an extended supply line to the safety relief valve is used, the supply line must be
self-draining.
• Pay attention to the direction of flow (marking arrow).

handtmann 33501 Specifications

General

Brand	handtmann
Model	33501
Category	Control Unit
Language	English