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Beschikbare talen
Beschikbare talen
8
Warranty
Every valve is tested prior to leaving the factory. We grant a warranty for our products
which entails the repair, free of charge, of any parts that are returned and verified as
being prematurely unsuitable for use due to defective material or manufacturing. We
shall not assume any liability for any damage ar other such obligations. If the factory
seal is damaged, in the event of any incorrect handling or installation, non-observance
of there operating and maintenance instructions, contamination or normal wear, warran-
ty claims shall be null and void.
Fig. a): Lifting by means of a knurled nut
Fig. b): Lifting by means of a lever
Fig. c): Safety valve without bellows and
without diaphragm
Fig. d): Safety valve with bellows
9
Marking/testing
TÜV symbol
Safety valve
Year of component test
Component test number
Narrowest flow cross-section
Code letters:
D/G/H designed for heating systems
D/G
designed for steam/gas
F
designed for liquids
F/K/S designed for blowing off air from tanks for liquid,
granular or dust goods
Coefficient of discharge
Set pressure in bar
We check the safety valves for pressure resistance and tightness, adjust the
requested set pressure and seal them. The identification on the type plate or on the
spring bonnet of the valve is applied using a permanent marking system.
The type plate is additionally marked with identification codes and technical data in
compliance with DIN EN ISO 4126-1.
Assembly and maintenance instructions - 851/451, 852/452/352, 652, 861/461, 420, 460 | Version: 06/2023 · V02
Fig. e): Safety valve with diaphragm
Fig. f): Safety valve with gastight cap
Fig. g): Safety valve with gastight
lifting lever
TÜV. SV. xx-xxxx.xx.
D/G/H.
0,xx. xx
D/G
F
F/K/S
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