Richter GR/F Series, Инструкция по установке и эксплуатации

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Series GR/F
Page 8
9550-025-en Revision 14
TM 10477 Edition 05/2022
6 Installation
♦
Examine valve for in-transit damage, damaged
globe shut-off or control valves must not be in-
stalled.
♦
Before installation the valve and the connecting
pipe must be carefully cleaned to remove any dirt,
especially hard foreign matter.
♦
During installation, pay attention to the correct
tightening torque, aligned pipes and tension-free
assembly.
6.1 Flange caps and gaskets
♦
Leave protective caps on the flanges until just prior
to installation.
If plastic sealing surfaces, e.g. on mating flanges
made of metal or enamel, can be damaged, use
PTFE-lined seals with a metal inlay.
These gaskets are available as special accessories in
the Richter range.
6.2 Direction of flow and installa-
tion position
The direction of flow must be observed when installing
the valve. It is indicated by a direction arrow on the
valve body.
The closing operation is already initiated by the gravity
of the closing element when the flow rate decreases.
Plug check valves are particularly streamlined. The
solid plug seals against a falling or back-flowing liquid
level.
Only a horizontal installation position is possible for
the check valve GR/F. Make sure that the cover is on
top.
6.3 Grounding
The valve must be grounded. This can be achieved in
the simplest way via the pipe screws using tooth lock
washers. One pipe screw per flange is underlaid with
toothed disks.
At the customer's request a setscrew M6 with a hex.
nut and washer will be provided at each flange as an
additional grounding connection.
Otherwise grounding must be ensured by different
measures e.g. a cable link.
6.4 Test pressure
The test pressure PT of a valve must not exceed the
value of 1.5 x PS(PN) as per the identification of the
valve.