handtmann 33501 User Manual

Safety relief valves
33501, 33502, 33503, 33521, 33601, 33602, 33603, 33621
Safety Information
BA(k)_033501.06
8 / 30 Albert Handtmann Armaturenfabrik GmbH & Co. KG 2023-07-27
Before taking out the upper valve part and loosening the
screws, the safety valve must be lifted manually or
pneumatically.
• Turn the counter nut on the valve rod by 2-3
rotations against the valve housing or apply
compressed air to the valve actuator.
Danger of thermal burns, chemical burns and scalding
If the safety relief valve in a system is operated with hot
media, the surface temperature of the safety valve can
also reach this value.
• Make sure that the piping system has cooled to a
value below 50°C.
• Attach warning signs (W026) for hot surfaces.
• The piping area in question must be sealed off from
the rest of the piping system.
When discharging fluid from the safety relief valve, there
is a risk of burns, scalding or chemical burns for the
operating and service personnel.
• Make sure that the fluids are discharged properly
and safely (exhaust line).
• Make sure that the valve is not opened in an
uncontrolled manner during maintenance work.
Chemical burns
If the safety valve in a system is operated with acidic or
alkaline media, your hands and fingers may suffer
chemical burns when disassembling the valve.
• Before removing the safety relief valve, check which
fluid the piping was conducting. If necessary, rinse
the piping again beforehand with water.
• Check the system pressure before removing the
safety relief valve.
Malfunction due to incorrect handling
Explanations
Measures
The valve must be switched off in the case of noticeable
malfunctions.
• Faults must be eliminated immediately.
The switching process of the valve is faulty or takes place
jerkily.
• Remove residues or loose small parts from the valve
seat area.
• Ventilate the valve periodically to prevent jamming
of the seat sealing (clean seat).
If the valve is not checked or maintained at regular
intervals, this can lead to malfunction or major functional
disruption.
• Check the valve during operational maintenance
cycles.
• Inspection and maintenance work should only be
carried out by qualified staff.
Malfunction through improper use
The range of application of the valve is intended for
specific operating states (pressure, temperature, media).
• Ensure proper use.
Installation of faulty or non-specified parts or using the
same as replacement parts may disable or disrupt
functionality considerably.
• Only use parts approved by the manufacturer.

handtmann 33501 Specifications

General

Brand	handtmann
Model	33501
Category	Control Unit
Language	English