Three Types of Long Shaft Fire Pumps
Tongke, TKFLO, UL/FM, and vertical turbine (VT) pumps were evaluated. We will discuss the pros and cons of each. Our optimal solution was determined using all three models. The theoretical support we gained from each model will be valuable for design optimization. We will also compare the different features of these fire pumps. The results of this study will help in selecting the most suitable one for the specific application. Tongke Pump
The Tongke long shaft fire pump has many features. The patented design of this pump makes it easier to install and maintain than other pumps. Several options are available for installation and maintenance,double suction centrifugal pump including optional drives, abrasives, and hose valves. These features ensure that the pump will run properly for years to come. For your convenience, the Tongke pump includes a variety of accessories. The following information will give you a brief overview of the different options available for your fire pump. TKFLO
The TKFLO Long Shaft fire Pump is designed for high-pressure applications in a wide range of industries. This model is sized to meet the stringent requirements of NFPA 20 (2013) and UL-448. These standards stipulate that fire pumps should operate at or near 40 PSI at fifteen percent of their nameplate capacity. TKFLO's fire pumps meet or exceed these requirements. This article explains how TKFLO's engine and motor size the pump to meet the demands of a wide range of industries. UL/FM
A UL/FM long shaft fire pump is a highly reliable solution for a wide variety of firefighting applications. The engine is UL/FM listed and can deliver up to 10% more power than the pump shaft. In addition, the UL/FM approved motor features a derate factor based on elevation and temperature. A fully flanged shaft and ANSI sleeved shaft extend seal life. UL/FM pumps come in a variety of sizes, including an FF-type design. Fuel tank capacity is based on NFPA 20 standards. Armstrong vertical turbine (VT)
They are available in capacities ranging from 50 gpm to 30,000 gpm. The VT pump has a single stage or multiple stages, depending on head generation. Its main advantage is its flexibility. A vertical turbine pump is one of the most common types of centrifugal pumps. Z4 model
This paper presents the theoretical and experimental investigation on the design optimization of a vertical long shaft fire pump. The Z4 model was selected as a suitable study object. Different shaft length connection was considered. The equivalent stress and deformation of the shafting rotor were investigated using the corresponding models. These models were studied for four operating conditions. These results demonstrate that the Z4 model is capable of optimizing design parameters in terms of pump performance. Large tank
A Large tank for a Long Shaft fire pump is the basic unit that supplies water to a fire pump. It is typically made from PT2E polypropylene and shall have a capacity of 200 U.S. gallons. The tank floor must be made of 3/4" PT2E polypropylene and have a recessed sump of at least 3/8". The top of the tank shall have a 1" NPT rear drain with a brass plug. Loud sound
During an annual test, it is perfectly normal to hear a loud noise from a long-shaft fire pump. But it isn't always so obvious. There are ways to minimize the noise. The first step is to determine what causes the noise. The cause may be as simple as cavitation, which is the formation of empty space or bubbles in a liquid. Cavitation occurs when air enters the pump head and impellers. The air causes the paddle inside the pump to spin freely, causing the RPMs to increase. NFPA 20 requirements
NFPA 20 requirements for long shaft fire pumps are designed to help prevent the risk of cavitation and wear caused by turbulent flow within a fire pump. To ensure a safe distance, the pump's suction flange should be at least 10x its discharge flange diameter. The NFPA 20 code specifies the proper orientation of long shaft fire pumps. The following example illustrates proper orientation.
