What are the types of fire pumps?

What are the types of fire pumps?

In fire extinguishing systems; line type, end suction and split case double suction centrifugal pumps are available. It is manufactured in accordance with NFPA 20, UL/FM and EN 12845 standards.

• End Suction Fire Pumps

They are single-stage and end-suction volute body centrifugal pumps. Pump performances comply with NFPA standards. Single inlet closed impeller is balanced against axial load with balance holes and wear rings and is dynamically balanced. The pump and motor are connected by means of a flexible coupling and the unit is fixed on a common baseplate. Pump maintenance is very easy and during maintenance operations, impeller, shaft and other rotating elements can be removed without removing the pump from the installation.

• Double Suction Centrifugal Fire Pumps with Detachable Body

They are single-stage horizontal split-bodied radial impeller double-suction pumps. Axial load is reset by the back-to-back design of the double inlet radial impeller and the closed impeller structure. Pump flanges are designed according to ANSI/ASME B16.1 Class 250. Input – output flanges are located on the same axis. Shaft sealing is provided by soft packings. It has the advantage of low NPSH character of double suction pumps. Pump and electric motors are connected with flexible couplings on standard chassis. It is also possible to drive with a diesel engine. The impeller of the pump is made of bronze material and the shaft is made of stainless steel.

• Line Type Fire Pumps

They are single stage, vertical shaft, line type volute body centrifugal pumps. Pump performances comply with NFPA standards. The single-suction, closed impeller is dynamically balanced against axial load with balancing holes and wear rings. Pump and motor connection is made by means of an adapter and using a special rigid coupling. Since the pump can be separated from the installation in such a way that its body remains connected to the installation, maintenance and repair operations can be carried out easily. According to the NFPA fire standard, shaft sealing is provided with soft packings. The principle of part interchangeability is adopted as a basis for the design. Thus, the supply of spare parts has been accelerated. It provides ease of direct starting with low electric motor powers.