Typical Strainer Specifications
The strainer shall be Model SFA20/SFA30/SFA31 Self-Cleaning, motorized type.
(Fig. 4)
The body and cover shall be fabricated (carbon
steel), designed, manufactured and tested generally to ASME Section
VIII Standards, using qualified ASME Section IX welders.
Housing to be suitable for a design pressure of
(150) psig. Inlet and outlet connections shall be flanged and conform
to ANSI B16.5 standards. The strainer shall have a single backwash
connection and drain connections. Unit
to be complete with factory supplied steel support legs for bolting
to concrete or steel base. Strainer shall be __________ size capable
of handling _________________ gpm of fluid at a _________ psig pressure
loss with clean straining elements.
The straining element will be
manufactured from corrosion resistant (304 Stainless Steel) reverse
rolled slotted wedge wire screen designed with ___________ inch openings.
The wide or flat cross section of the wedge wire shall face the direction
of flow providing for a continuous smooth flat surface to trap debris.
The straining media shall be free of pockets, tubes, collector bars,
etc. that accumulate and trap debris permanently.
All internal parts will be of corrosion resistant
(304 Stainless Steel). The strainer shall be provided with drive shaft
and hollow port assembly fitted with all necessary bearings and seals.
The drive arm and hollow port assembly including the adjustable accelerator plate will be
free running at a maximum speed of two (2) rpm and not contact with
screen surface. Port assembly shall be factory and field adjustable
for positive effective cleaning and shear capability.
Note: Sizes
1" thru 16" have (1) backwash hollow port. Sizes 18" and up will have
(2) backwash hollow ports.
Drive shaft will be supported at the top with roller
bearings located in a double reduction gear reducer and at the bottom
with a water lubricated guide bearing.
The gear reducer shall be driven
by a ____________hp, ___________ v, __________ Ph, 50/60 Hz, TEFC
motor.
