8
ED. 2009/09 /
The buyer or user will be responsible for the assembly, installation, starting and operation of the
valve.
3.5.
LOCATION
Place the valve in such a way as to facilitate inspections and checks. Leave sufficient space around the valve for appropriate
inspection, disassembly and maintenance (See Section 3.9.1).
When installing the actuator, allow a minimum free surrounding space of about 100 mm so that the valve can be disassembled.
If there are accessories such as position sensors, travel limits, etc., you must allow an addition space for disassembly of these
elements.
3.6.
FLOW DIRECTION
PHARMAVALVE valves can combine the drives with various types of bodies as described below.
The flow direction in L-type bodies can be as shown in figures
a
or
b
below. The flow in direction
a
is the recommended
direction, as there is less pressure loss and fewer dead zones, due to the direction of closure.
In T-type bodies, the normal direction is shown in figure
c
, as it minimises pressure losses and dead zones.
T-type casings are
NOT
3-way valves; they act as a divider when the valve is closed, and as a T when it is open.
L-type shut-off valve
T-type shut-off valve
3.7.
ASSEMBLY
Once the location of the valve is defined, the pipe can be connected by welding the bodies of the valve or by means of a clamp
fitting. In this case, do not forget the seals and to fully tighten the wing nut.
All the casings have hygienic clamp connections as standard at both the inlet and outlet. Butt weld connections are also
available as an option.
Before starting welding of the body to the piping or tanks, disassemble the valve to avoid damaging
the diaphragms.
Excessive stress should be avoided during the assembly of the valves and special attention should be given to the following:
•
Vibration which may be produced in the installation.
•
Expansion of the pipes during circulation of hot liquids.
•
The weight that the pipes can withstand.
•
Excessive intensity of welding.
10.
32
0.3
2.
00
10
2
Summary of Contents for PHARMAVALVE
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Page 22: ...NOTES...
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