As one of the oldest submersible pump manufacturers in the world, Hydromatic Pumps offers you field-proven pumps and systems for all your requirements.

Hydromatic Pumps provides a 5-year warranty, the most comprehensive in the industry. We also supply complete technical support, warranty service, and ongoing engineering assistance for the life of the pump.

Continuing submersible impeller design work and refinement spanning over 30 years gives you the most energy efficient pumps available. The above chart compares electrical power costs of HYDROMATIC pumps with three other pump manufacturers. For example, with HYDROMATIC pumps you save $4,62 8 dollars in one year of continuous operation compared with manufacturer "A". This more than pays for the pump!

Dependable Operation

The HYDROMATIC pump's oil-filled motor keeps the windings cool, eliminates moisture, and permanently lubricates the bearings, to provide reliable pumping service. First, the oil bath keeps the motor and bearings cool by dissipating heat and maintaining the correct operating temperature. The oil transfers heat generated in the motor windings to the housing where it is dissipated by the surrounding wet well media. Second, the oil bath locks out airborne moisture contamination which destroys motors and bearings. Air carries moisture that condenses with temperature changes and causes premature motor and bearing failure. Third, the oil bath permanently lubricates the bearings which minimizes heat and flushes contaminants away from bearing races. Heat and contaminants cause grease breakdown. This breakdown leads to premature failure of grease-packed bearings supplied by other manufacturers. Oil-filled motors ensure dependable, reliable service!

The Dual Seal System gives long pump service life. The mechanical Dual Seal V-00C System protects the motor from water with one shaft seal at the top and one shaft seal below an Oil chamber. The oil chamber provides lubrication for the seals and traps any moisture that may leak through the lower seal. The upper seal operates entirely in oil. The lower seal is "self-sealing" with pressure surges because it is located outside the chamber. Pressure surges from the volute push the lower seal tightly against the stationary face to prevent leakage into the oil chamber. HYDROMATIC pumps use high performance, low friction, long-lasting carbonceramic seals. Some manufacturers use very expensive seals that arc only available from their own factory. HYDROMATIC pumps use repairable John Crane* Type 21 mechanical seals that are available off-the-shelf worldwide. Nickel -Tungsten -Carbide Seals are optional. The dual seal design gives the pump exceptionally long pump service life by keeping the pumped media out of the motor housing.

The moisture sensor, provided as standard on all non-clog pumps, saves money and decreases downtime by allowing you to take corrective action before an expensive bearing or motor failure occurs. HYDROMATIC pumps incorporate an internal moisture sensor that detects the presence of moisture in the oil chamber. The sensor's signal to the warning system lets you know that the lower seal is beginning to leak.

This allows you to schedule maintenance within 2 to 4 weeks while the pump continues to operate. Some manufacturers put a moisture sensor in the motor area. Moisture is detected after it begins affecting the bearings and motor itself The moisture sensor allows you to perform maintenance at your convenience instead of reacting to an emergency breakdown.

Reliable Operation

Three barriers provide triple protection against motor-damaging water. Two epoxy barriers and a compression fitting keep water out of the motor so you get long-term, reliable operation. A watertight seal at cable entry is ensured with a single trumpet shaped clastomer grommet flanked by a washer and compression gland. The top epoxy barrier keeps water out of the connection box and the lower barrier keeps moisture out of the motor area when the cord is disconnected.

Leads going through both epoxy barriers arc stripped down to bare wire at staggered intervals and each lead is individually separated. This lead-encasing design prohibits any wicking or capillary water movement inside the cord. There is no terminal board to crack and invite motor burnout. HYDROMATIC epoxy barriers are the most proven sealing method available.

HYDROMATIC pumps are virtually maintenance free because the oil-filled design keeps the motor and bearings both fully lubricated and operating in the proper temperature range for very long life. You schedule and perform periodic maintenance for bearings and seals less often than required by other manufacturers.

The volute-mounted wear ring is easily replaceable. It is made of bronze to give you long impeller life. HYDROMATIC pumps use a true wear ring, not a media lubricated bushing used by some manufacturers. The top pullout design makes it easy to disassemble the pump in one operation in order to replace wear components, including the impeller. This reduces repair time and downtime. The tapered shaft available on models S4M and larger allows the impeller to be easily removed without special tools. Stators are easily field replaceable with standard tools. Stators are reliably held in place with keys and a clamp ring. Some manufacturers with press fit stators require complete shop facilities for replacement. The easily replaceable stainless steel shaft sleeve protects the shaft from corrosion and helps prevent shaft replacement.

Performance Curves
1750 RPM

1150 RPM

870 RPM

Range Charts For the Recessed Impeller

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