Close Impeller OP

The Oasis Close Impeller OP pumps provide a selection of low & high output pumping systems designed for on-site dewatering applications. Reliability & efficiency is achieved with the help of a special volute and the impeller design. The pumps provide continuous high discharge flow linked to substantial suction and discharge head. These models use closed single stage heavy duty impellers that are dynamically balanced. The vacuum assisted self-priming pumps provide high air displacement that makes them perfect for strenuous duty.


Oasis Pumps come with a nickel C.I & aluminum (grade LM25) primary tank, SS (316) impeller, SS (316 L) shaft fitted with double row, heavy duty, self-lubricated bearings & mechanical seal as standard. Optional soft packing available.  A choice of customized materials is also available upon request. Standard pumps are skid mounted. Option of towable trailer mounted (two wheel pneumatic tires) or portable four wheel hard rubber tires available.

Industrial applications include construction, marine, public utilities (movement of water & sewage), and oil & gas industries. Ideal for dewatering requirements such as well pointing, boosting discharge, sump pumping.

Oasis can supply a full range of well point accessories that includes header pipes, quick action fittings, flexible hoses, lay flat hoses etc.

   OP SP   


70 CFM Capacity; flood lubricated vacuum pump. Provides priming & re-priming of pump as required.

Close Impeller
Dynamically balanced close type stainless steel (grade 316) impeller to with stand high corrosive liquids comes as standard. Optional bronze (grade BC3) impeller is available.

Discharge Assembly
Single piece casted SG Iron alloy 'T' piece, giving maximum durability.

Belt Guard
Moving parts are protected by mesh or steel crash guards.

Main Pump Shaft
Stainless steel (grade 316), dynamically balanced to provide life of seals & self-lubricated bearings.

Primary Tank
Single piece die-casted aluminum alloy (grade LM25) priming tank, giving maximum durability.

Pumps are available with a variety of engines including Deutz, Lister – Petter and Kirloskar. Selected pumps are fitted with both electric & hand start. These engines may continue to be used even if the starter or dynamo is dysfunctional.

Technical Specification

Discharge / Suction pipe connections-In (mm) Mode
OP 100/40 OP 150/70 OP 200/70
4(100) 6(150) 8(200)
CFM 40 70 70
Water flow (CuM/Hr) 150 400 550
Total Head (m) 35 35 35
Vacumm Lift (m) 9 9 9
Motor Power (Hp) 23 38 52
Engine - Kirloskar with electric & manual start