HEAVY DUTY PUMPS, SERIES 4193 AND 4930 pages

VIKING® HEAVY DUTY PUMPS

154

Page

154.

Issue

SERIES 4193 AND 493
STEEL EXTERNALS

Section

C

FEATURES
① Pressure
Range

250 PSI (17 BAR) for 100 SSU (20 cSt) and above
150 PSI (10 BAR) for 38 to 100 SSU (3 cSt to 20 cSt)
100 PSI (7 BAR) for below 38 SSU (3 cSt)

② Temperature
Range

0° F. to + 350°F. (- 18° C. to + 177°C.)

③ Viscosity
Range

28 SSU to 15,000 SSU
(0.1 cP to 3,300 cSt)

GPM up to 75
(M³/Hr up to 17)
④ (Nominal Rating)
FEATURES

MECHANICAL SEAT

① Buna-N Bellows
② Buna-N O-ring
③ Carbon Rotating Face (Washer)
④ Ni-Resist Stationary Seat
⑤ Steel Metal Parts
⑥ Stainless Steel Spring

BALL BEARINGS

(Standard Equipment)
Pumps are equipped with inner cas­
ing ball bearing installed outside of
mechanical seal and a radial thrust
ball bearing permitting heavy-duty
service up to 250 PSI (17 BAR).
Bearings are “Sealed for Life”.

INTEGRAL OVER‑PRESSURE
RELIEF VALVE

(Standard Equipment)
Permits bypassing of liquid from
discharge to suction side of pump.
Prevents build up of pressure in dis­
charge line. “GG”, “HJ” and “HL’ size
valve mounts on pump head. “AS”,
“AK” and “AL” size valve mounts on
pump casing.

DUCTILE IRON PARTS

(Standard Equipment)
(“AS”, “AK”, “AL” Sizes)
Internal pumping gears (rotor and
idler) are constructed of ductile iron
for added strength in handling all
types of liquids up to 15,000 SSU
(3,300 cSt). “HL” size rotor also
furnished in ductile iron.

O-RING GASKETS

(Standard Equipment)
O-Ring gaskets are used between
casing and head plate and between
casing and relief valve or valve
plates. Flat valve gaskets furnished
on “GG”. “HJ” and “HL” size pumps.
These gaskets provide a positive
seal eliminating a chance for leakage at these points.

SERIES 4193

Cutaway View
10-20-30 GPM Sizes
(2-4.5-7 M³/Hr)

Viking’s high-speed, heavy-duty Series 4193 and 493
steel external pumps are available in capacities up to 75
GPM. These pumps can be furnished directly connected to
a 50HZ or 60 HZ motor. Series 493 is designed for vertical
or horizon­tal flange mount installations where space is at
a premium. (See pages 154.4-.6) Series 4193 is designed
for foot type horizontal mounting.
These pumps are built for continuous or intermittent duty
for such applications as filtering, circulating, trans­ferring,
or booster service in general industrial, petro­chemical and
other industries.
They are furnished as standard with mechanical seal
construction to minimize liquid loss and for shaft protec­
tion. The thrust control provides micrometer adjustments
for accurate rotor and shaft positioning to help you keep
operating with new-pump efficiency through years of
heavy-duty service.
Viking’s famous “gear-within-a-gear” principle has only
two moving parts. It is the secret of dependable efficient
op­eration of all positive displacement Viking rotary pumps.
Positive displacement of liquid is accomplished by the
meshing of rotor and idler gear teeth.
With every revolution of the pump shaft, a definite amount
of liquid is drawn into the pump through the suc­tion port.
① Consult factory for specific recommendations.
② With special construction, temperature to +350°F (+177°C). can be handled
with this series.
③ For viscosities above 15,000 SSU (3,300 cSt), provide details for recommendations.
④ Nominal capacities based on handling thin liquids.

Metric conversions are based on US measurements and rounded to the nearest whole number.

VIKING PUMP • A Unit of IDEX Corporation • Cedar Falls, IA

©2008