The Keckley Style PSD mounts to the
suction side of a pump in either a
horizontal or vertical position. It is
designed to remove any foreign matter
that may be hazardous to the pump or
other system components, while providing
the proper flow conditions to the pump.
Where space is limited, the Keckley
Style PSD can be used as an elbow (in
some cases a reducing elbow) with a
built in strainer for easy maintenance
and system performance.
CONSTRUCTION
The Keckley Style PSD Suction Diffusers
are constructed from rugged cast iron
castings that are machined to exacting
specifications. These bodies have
drilled flanges that are in accordance
with ASME B16.1.
FEATURES
Reduces
installation costs by replacing the
strainer, elbow, and entry pipe on
the suction side of the pump.
Integral
straightening vanes ensure uniform
flow to the suction inlet of the
pump.
Minimal
pressure drop (Oversized body &
screen).
Perforated
stainless steel screen with a 20
mesh stainless steel removable
start-up sleeve to help promote a
cleaner more trouble free system.
Bolted cover
plate with O-ring seal – standard.
(Knobs available upon request).
Cast
supporting pads on the diffuser body
offer easy mounting of standard I.D.
support foot.
Tapping for
inlet and outlet differential
connections – Optional.
Drain
connection with plug – standard.
WORKING PRESSURES– NON-SHOCK
Style TDV
Triple Duty
Valve
Cast Iron
(ASTM A 126 Class B)
125 lb.
Flanged
Triple Duty Valve
APPLICATIONS
The Keckley
Style TDV is a Triple Duty Valve
primarily required on the
discharge side of a centrifugal
pump in a hydronic heating or
cooling system. This valve
functions as a shut-off valve,
spring loaded silent check
valve, and balancing valve.
CONSTRUCTION
The Keckley
Style TDV Triple Duty Valves are
constructed from rugged cast
iron castings that are machined
to exacting specifications.
These bodies have drilled
flanges that are in accordance
with ASME B16.1.
OPERATION
The Keckley
Style TDV has an automatic and
silent operation. The disc will
open when the line pressure is
approximately ¼ PSI. As the line
pressure approaches zero, the
spring will close the disc to
prevent flow reversal and water
hammer. The flow through the
valve can be adjusted from
bubble tight shut-off to full
flow by the acme rising stem.
FEATURES
The center
guided soft seal disc ensures
that there is no leakage. The
rising stem design includes an
adjustable position indicator
for accurate disc positioning
for throttling service. This
unit comes with a standard gauge
taps at both the inlet and
outlet sides and a NPT drain
plug.
