Vertical Impeller Pumps

Thousands of our pumps work on ship’s engine rooms, water supply systems, heating systems and many other. Our strategy assumes manufacturing of most pump elements. Only accessories such as electric motors, roller bearings and mechanical seals are acquired from other famous manufacturers.

All pumps are driven by 50 or 60 Hz electric alternating current motors.
Pumps WL and WLs with capacities up to 400 m³/h are single-suction pumps, but WL and WLs 630 and 1000 m³/h are double-suction pumps. Pumps with capacities up to 160 m³/h can be also assemble to the wall.

Pumps WL and WLs are designed for many areas of ship and offshore technologies.
The most frequent applications are:

Quiet operation, minimal space for mounting, simple construction, small number of components, plain attendance. Removing the rotating item, seals and bearings without dismounting motor and pipe connections.

For contamination-free mediums such as fresh water, sea water, oil and other liquids of visconsities up to 5^oE (38,2cSt) and the following temperature ranges:
# fresh water and oil - up to 95^oC;
# sea water - up to 45^oC.

Pumps WL and WLs cover nominal capacities from 25 m³/h up to 1000 m³/h.
Pumps WL can operate at the following inflow values:

• up to 20 m for the pumps of delivery head
• up to 35 m up to 15 m for the pumps of delivery head
• up to 40 m up to 10 m for the pumps of delivery head greater than 40 m

The maximum manometric suction head is 5-7 meters of water column depending on the pump size. The maximum manometric suction head is specified for clean liquid at the temperature of 20^oC and at the atmospheric pressure of 760 mm Hg. All pumps can work in manually, automatically or remotely controlled systems.

• Casing - execution M - grey cast iron (DIN 1961 - GG-20, GG-25) execution T - bronze (DIN 1714- B101, B102)
• Impeller- bronze(DIN1714 - B101, BK331) On request we can supply also synthetic impellers.
• Seal rings - bronze (DIN 1714 - B101)
• Shaft - stainless steel (DIN 1714 - 85 H17N2)
• Mechanical Seal - by BURGMANN

All pumps are manufactured in conformity with regulations and requirements of following classification societies:

• Polish Register of Shipping
• Lloyd’s Register of Shipping
• Russian Maritime Register of Shipping
• Germanisher Lloyd
• Det Norske Veritas
• American Bureau of Shipping
• Bureau Veritas

Pumps type Pa are vertical vacuum pumps with a water ring.

Applications

Pumps type Pa are usually used together with vertical and horizontal impeller pumps, thus forming a selfpriming pump unit. The main function of the vacuum pump type Pa is to create vacuum both in the suction pipeline and the impeller pump. It causes the pumped liquid to be sucked into the impeller pump and makes normal work possible. In principle vacuum pumps Pa are designed to work together with pumps type WL made by GZUT JSC, but they can be used also for operating with other pumps and other pipeline systems.

Operating range

The vacuum pump type Pa fulfill their functions in the whole suction head range of impeller pumps WL. The maximum time of continuous operation is 600 sec.

Construction

The construction of pumps Pa enables its installation on the suction pipeline, on the casing of the main pump or on an independent supporting structures. Please contact us before installing the pump Pa in already existing pump installation.

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