Flowserve SB Control Valves - Manual (Page 3)

ShearStream SB FCD VLENIM4152-01 07.09
3
4. Installation
Before installing the valve, ensure that the pipework is
free from impurities, that the pipe ends between which
the valve is to be installed are parallel and are correctly
aligned, and that the distance between the pipe ends
corresponds to the valve length, including gaskets. The
valve could not be used for forcing together or aligning
incorrectly pipes as this will cause loads on the valve
and pipe which may lead to diffi cult damages during
operation. See Fig. 3.
Wrong installation Correct installation
Fig. 3. Ensure that the pipe ends align and have the correct distance
ShearStream SB valves can be installed in any position.
However, we recommend the direction of fl ow which
is shown by an arrow on the valve body. The sealing
performance of the valve is limited if the fl ow is in the
opposite direction.
We also recommend that the valve is mounted with
the stem pointing vertically upwards when the valve is
installed in a horizontal run of pipe.
The pipes should be supported on each side of the
valve, in order to relieve the valve of loads and avoid
vibrations.
Locate the valve so that it will be easily accessible for
inspection and service, particularly if the valve is equipped
with a pneumatic actuator and valve positioner.
5. Flange Gaskets
Gaskets with sizes according to ANSI B16.5, Table E1
Figure E2, SS 359 or DIN 2690 are recommended.
6. Starting up
Before starting up, fl ush the pipework - with all valves
in the open position - so that any impurities that may
damage the sealing surfaces of the valve and impede its
operation will be fl ushed away.