HEAVY DUTY PUMPS, SERIES 4193 AND 493
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VIKING® HEAVY DUTY PUMPS SERIES 4193 AND 493 STEEL EXTERNALS FEATURES ① Pressure Range 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. 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

Section Page VIKING® HEAVY DUTY PUMPS SERIES 4193 STEEL EXTERNALS FOOT MOUNT WITH FLANGED PORTS Viking’s positive displacement Series 4193 pump line with steel externals is ideal for refining, petrochemical and other applications requiring shock resistant construction. They are equipped with steel, internal type, over-pressure relief valve. The steel used meets ASTM designation A216 Grade WCB specifications. All pumps are equipped with horizontal 300 lb. ANSI flanged ports and conform to most requirements of API 676. A simple, efficient, unbalanced single mechanical seal with Buna-N...

VIKING® HEAVY DUTY PUMPS Section Page SERIES 4193 STEEL EXTERNALS DIRECT DRIVE UNITS (“D” DRIVE) SERIES 4193 Pumps with “D” Drive “AS”, “AK” and “AL” Sizes SERIES 4193 Pumps with “D” Drive “GG”, “HJ” and “HL” Sizes Series 4193 units in the “GG”, “HJ” and “HL” size (nominal rating 10, 20, 30 GPM) are designed for highspeed, heavy-duty service. The pump is connected by a flexible coupling with guard directly to a 50 HZ or 60 HZ motor. Both pump and motor mount on a sturdy formed steel base. This makes a very compact, rugged unit for heavy-duty service, handling many types of liquids up to...

Section Page VIKING® HEAVY DUTY PUMPS SERIES 493 STEEL EXTERNALS VERTICAL OR HORIZONTAL FLANGE BRACKET MOUNT ① Pressure Range ② Temperature Range GPM up to 75 (M³/Hr up to 17) ④ (Nominal Rating) This Flange Bracket Mount Series 493 pump line with steel externals is ideal for refining, marine, petrochemical and other applications requiring shock resistant construc­tion. They are equipped with steel flange-mount casing and are furnished with steel, internal type, over-pressure relief valve. The steel used meets ASTM designation A216 Grade WCB specifications. All pumps are equipped with...

VIKING® HEAVY DUTY PUMPS Section Page Viking’s Series 493 pump line can be mounted either ver­tically or horizontally to electric motors. Vertical inline mounted unit described on this page comes complete with “C” flange mounting bracket and coupling between motor and pump. Ideal for refining, petrochemical, marine and other ap­ plications requiring shock resistant construction, these units save space and weight. They are equipped with steel casing and head and are furnished with steel, internal type, over-pressure relief valve. The steel used meets ASTM designation A216 Grade WCB...

Section Page VIKING® HEAVY DUTY PUMPS SERIES 493 STEEL EXTERNALS FLANGE BRACKET HORIZONTAL MOUNTED PUMPS (“M” DRIVE) SERIES 493 Pumps with “M” Drive “GG”, “HJ” and “HL” Sizes with “M” Drive “AS”, “AK” and “AL” Sizes For more compact horizontal mounting, the “C” face mounted Series 493 Heavy-Duty pump units in all six sizes include a combination motor “C” flange and square pump flange bracket with coupling connecting motor and pump. The three smaller units connect to a foot mounted motor, while the three larger units include a foot type bracket to mount a flange type motor. An optional...