Pulsafeeder Pulsalube 8 GS Ultra, Operation & Maintenance Manual

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Schutte & Koerting • 2510 Metropolitan Drive • Trevose, PA 19053 • USA • tel: (215) 639-0900 • fax: (215) 639-1597 • www.s-k.com • sales@s-k.com
4
Water Jet Eductors Bulletin 2M
Fig. 2645 Automatic Eductor
Fig. 2645 Automatic Water Jet Eductors are used to
pump out sumps (pits, tanks, etc.) where liquid
accumulates slowly but must be evacuated when it
reaches a predetermined level.
As the liquid in the sump (basin, tank, cellar, bilge, etc.)
accumulates, it raises the ball float until the upward action
of the float opens the snap-acting valve, admitting motive
fluid into the pressure connection of the eductor.
The jet action of the motive fluid creates a vacuum in the
eductor and entrains the suction fluid, discharging both
fluids under pressure. As the suction fluid is thus pumped
out, the sump level drops to a point where the snap-
acting valve shuts off. No further pumping action takes
place until the sump again fills to the operating level.
Operation of the Fig. 2645 Eductor is completely
automatic. It is self-operated, requires no electrical
connections or any external power other than the motive
fluid. The snap-acting valve and ball float are the only
moving parts. The full assembly is so compact it can be
installed in tanks as small as 13 1/2” diameter.
For performance information, see accompanying Bulletin
2M Supplement Performance Data.
TRIP COLLARS.
Adjustable between
2” and 7” for float
travel.
FIG. 280 FLOAT-
OPERATED SNAP-
ACTING VALVE.
Has no intermediate
position. Opens wide
or closes tightly to
prevent inefficient
operation at inter-
mediate water levels.
Has bronze body,
stainless steel piston
and pilot valve, Teflon
pilot valve seat and
valve steam seal.
ACTUATING ROD.
Bronze.
STANDARD FIG.
264 EDUCTOR.
Can be any eductor
described in this
bulletin.
SUCTION PIPE.
Steel, 40” long.
Longer pipes can
be supplied for
deep pits.
BALL FLOAT.
8” diameter stainless
steel ball.
STRAINER.
Threaded connections.
Brass.
A B
C
D
E
F
G
H
Suction
Ball Float
Pipe Strainer
Discharge
Eductor
Pressure
Pilot-Operated
Snap Valve
Bleed
Off
Adjustable
Collars
Table 3. Sizes and Dimensions, Fig. 2645 Automatic Eductor
Eductor
Size In
Inches
Connections In Inches N.P.T.
Wgt. In
Lbs.
Working Pressure
(Bronze)
Dimensions in Inches
Suc.-Disch.
Pressure
(Snap-Valve)
Motive*
(psig)
Body
(psig)
A B C D E F G H
3/4 3/4 1 24 100 100 3 11/16 3 3/8 41 44 7/8 7 5/6 5 3/8 47 1/8 60
1 1 1 26 150 125 4 5/16 4 3/16 41 44 7/8 7 5/6 5 3/8 47 1/8 60
1 1/2 1 1/2 1 32 125 90 4 1/8 6 1/2 41 44 7/8 7 5/6 5 3/8 47 1/8 60
2 2 2 43 125 85 6 1/4 7 5/8 38 3/8 43 15/16 7 7/16 5 3/8 47 1/8 60
2 1/2 2 1/2 2 65 200 125 6 11/16 9 1/4 38 3/8 43 15/16 7 7/16 5 3/8 47 1/8 60
3 3 2 81 200 125 6 3/8 11 1/4 38 3/8 43 15/16 7 7/16 5 3/8 47 1/8 60
*Minimum motive pressure for all Fig. 2645 Eductors: 40 psig