Garlock GAR-SEAL Instructions De Service page 20

Valves that are supplied without manual lever / gearing or drive:
The valve disc is not secured against moving. It must not open from its locked position due to
outside influences (e.g. vibration).
Danger
4 Installation into the piping
4.1. General
For installation of Garlock valves into piping systems the same instructions apply as for connection of pipes and
similar piping elements.
The following instructions are to be additionally observed for valves.
For transport to the installation location, paragraph 3 <Transport and storage> must be observed.
Garlock valves should be installed without additional gaskets.
However, in case of rough or uneven sealing surfaces, a flange gasket is preferable. If you
produce them yourself, please observe the dimensions in the following table. These dimensions
are not compliant with a norm but are adjusted to the gaskets.
We do not recommend using metal enforced seals or soft seals with metal inserts, as this may
cause damage to the body lining.
Note We recommend using Garlock GYLON Blue, Style 3504 flat sealing material.
DN Inch
2 2½
mm 50 65
mm 61 71
Di
mm 107 127
Da
If – in exceptional cases – a valve without drive unit must be installed, it must be ensured that
such a valve is not exposed to pressure. If a drive unit is retrofitted the nominal torque and the
setting of the final stops must be tuned to "OPEN" and "CLOSED" of the valve.
Non-observation this regulation may result in danger of life and health and may cause damage
Danger
in the piping system.
to Life
4.2 Preparations
It must be ensured that only such Garlock valves are installed whose pressure class, connection type and
dimensions are compliant with the conditions of application. See marking of the valve.
No valve may be installed which permitted pressure-temperature limits are not sufficient for
the operating conditions: The pressure- and temperature limits are marked on the valve, the
permitted range of application depending on the lining material (see type label) is described in
the Garlock planning documents – see paragraph 9 <Further information>.
Non-observation this regulation may result in danger for life and health and may cause damage
Danger in the piping system.
to Life In case of doubt, please contact Garlock.
– Take Garlock valves out of their original packaging and remove all accompanying materials and clean off
any dirt.
– Check Garlock valves for transport damage. Do not install damaged valves.
– Following prolonged storage of approx. six months or more, retighten the housing screws before installation
to the torques specified in point 7.1.
– Garlock butterfly valves are designed to be fitted between flanges as per EN 1092-1 (DIN 2501) PN 10
(PN16) / ASME B 16.5 class 150 as standard.
MOBILE-SEAL valves can also be used installation between flanges according to DIN 28459. Other flanges
may only be used upon release by Garlock.
3 4 5 6
80 100 125 150
83 106 128 158
142 162 192 218
Garlock recommends a seal thickness of 3.2 mm.
8 10 12 14
200 250 300 350
208 259 310 336
273 328 378 438
20
16 18 20 24
400 450 500 600
388 431 485 579
490 540 595 695
Leaders in Sealing Integrity