ED. 2009/11
Receiving and installing
7
The buyer or user will be responsible for the assembly, installation, starting and operation of the
valve.
3.4.
LOCATION.
Place the valve in such a way as to facilitate inspections and checks. Leave sufficient space around the valve for appropriate
inspection, separation and maintenance (See Section 3.8.1)
3.5.
FLOW DIRECTION.
The recommended flow direction for the product passing through each of the valve types is indicated below. Following these
indications will help to prevent as much as possible any pipe hammering and the consequences of this caused during single-seat
valve closing operations. The recommended direction is always contrary to the valve closing movement, that is to say, the plug
shaft always works against the fluid pressure when closing the valve.
For type N, M type valves, it advisable to connect the fluid inlet to the valve at the lower opening.
For type-K divert valves, due to their design, it is advisable to connect the fluid inlet to the intermediate opening.
NC
MC
NB
MB
NA
MA
MD
ND
KG
KF
KH
KE
NT
NL
Cut-off valve
N,M
Divert valve
K
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