Samson BR 14t - LTR 43, Монтаж и эксплуатация

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5-1
EB | 14t_EN
June 2023 edition
Subject to technical changes
Installation
5 Installation
The work described in this chapter may only be performed by
specialist personnel quali
fi ed to perform the corresponding task.
Observe chapter 4.3 for transport to the installation site.
5.1 Installation conditions
Operator level
The operator level for the valve is the front view on all operating
elements of the valve from the perspective of operating person-
nel.
The plant operator must make sure that operating personnel can
carry out all work after the butter
fl y valve is installed safely and
can access it easily from the operator level.
Pipe routing
Q Flow
a Entry length
b Run-out length
Figure | 5-1: Entry and run-out lengths
Table | 5-1: Entry and run-out lengths
Medium
state
Butter fl y valve conditions
Installa-
tion
length a
Run-out
length b
Gaseous
Ma ≤ 0.3 2 4
0.3 ≤ Ma ≤ 0.7 2 10
Vaporous
Ma ≤ 0.3 1) 2 4
0.3 ≤ Ma ≤ 0.7 1) 2 10
Wet steam
(Condensation percentage >5%)
2 20
Fluid
Cavitation free / w < 10 m/s 2 4
Sound cavitation / w ≤ 3 m/s 2 4
Sound cavitation / 3 < w < 5 m/s 2 10
Critical cavitation / w ≤ 3 m/s 2 10
Critical cavitation / 3 < w < 5 m/s 2 20
Flashing - 2 20
Multi-phase - 10 20
1) no wet steam
The entry and run-out lengths depend on various variables and
process conditions and are provided as a recommendation, see
Table 5-1.
If the lengths recommended are signi fi cantly undershot, contact
PFEIFFER.
The guidelines applicable on site apply for the installation of the
butter
fl y valve in the pipe.
Install the butter fl y valve so there is low vibration and no
mechanical tension, use a support if necessary. Observe the
sections “Installation orientation” and “Support and mounting” in
this chapter.
Install the valve so there is enough space to replace the actuator
and butter
fl y valve as well as to perform maintenance and repair
work.
Installation position
The butter fl y valves of the BR 14t - LTR 43 are designed such that
it is possible to position the actuator/butter fl y valve horizontally
or vertically, whereby the standard version is vertical. The agreed
and documented installation location must be observed. If it must
be adjusted contact PFEIFFER.
Functional impairment of the valve due to oil leaking from the
hand pump in case of an incorrect installation position!
Ö
Observe the agreed and documented actuator and butter fl y
valve alignment.
Support and mounting
The plant manufacturer is responsible for the selection and
implementation of a suitable support or mounting for the installed
valve as well as the pipe.
Attachments
When connecting the attachments, make sure that they can be
operated from the operator level safely and with easy access.
Venting
Vents are screwed into the exhaust air connections of pneumatic
and electropneumatic devices to ensure that the generated
exhaust air can be released to the outside (protection against
overpressure in the device). Furthermore, vents allow the intake
of air (protection against underpressure in the device).
Ö
Ventilation must be oriented such that operating personnel is
not endangered. The operator must evaluate the hazard due
to noise and prevent it using suitable measures.
WARNING