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NFPA20 And GB6245 Standard 25GPM Fire Jockey Pump For Firefighting Application
Fire Jockey Pump Introduction:
A jockey pump is also known as a pressure maintenance system pump. The pump is a very important component in a fire pump system as well as the entire fire protection system. It is designed to maintain the pressure in a fire sprinkler protection system elevated to a certain level when the system is not active. This is meant to ensure that the fire pump does not have to operate constantly and they system does not go off randomly. It also designed to protect the fire sprinkler system from damage in case a fire breaks out and water leaks into the pipes. The jockey pump consists of a three-part assembly, and in most places, there are strict guidelines for installation to ensure it works as intended.
In order to understand how the jockey pump works, it is important to understand how the fire sprinkler system works. The sprinkler system consists of pipes with pressurized water and heads designed to start operating when a certain high temperature is detected. As the heads open, the water pressure within the pipes decreases because water is flowing out. When this occurs, a fire pump automatically starts sending more water through the piping system in order to continue putting out the fire.
How To Choose:
It should be chosen so as to get into operation in a period as much as 10 minutes and bring the pressure to the desired level upon detecting a leakage that may be evident in the fire-extinguishing system.
It is selected at 1% of the nominal flow of the flow (min. 1 GPM), and at a pressure of more than 10% of the nominal pressure.
CCCF: Q:0.25-125L/S H:0.40-2.5Mpa
NFPA20: Q: 100-1000GPM H:100-220PSI
Large hotels, hospitals , schools,office buildings,supermarkets, commercial residential buildings, metro stations, railway stations, airports, kinds of transportation tunnels, petrochemical plants, thermal power plants, terminals, oil dep, ots, large warehouses and industrial and mining enterprises, etc.
A jockey pump is a small pump connected to a fire sprinkler system to maintain pressure in the sprinkler pipes. This is to ensure that if a fire-sprinkler is activated, there will be a pressure drop, which will be sensed by the fire pumps automatic controller, which will cause the fire pump to start.
A jockey pump is sized for a flow less than the flow to one sprinkler in order to ensure a system pressure drop. Hence a jockey pump is an important part of the fire pumps control system.
Jockey pumps are typically small multistage centrifugal pumps, and do not have to be listed or certified for fire system application. The control equipment for jockey pumps may however carry approvals.
First-Class international technical standards
NM Fire is the first member of NFPA from Chinese pump manufacturers .
The production of fire pump groups is strictly in accordance with NFPA20, production process and performance testing also meet the requirement of ISO9001, some kinds of products have got APSAD(France), UL , FM and CCCF certificates.
We are the only enterprise in China that obtained not only UL and FM certificates, but CCCF as well,also the first company in the world who was authorized by UL CCIC as witness testing center for both fire pumps and fire fighting engines.
First-Class testing and inspection equipment.
UL certification represents the world's highest technical standards of fire certification,but also means that certified fire products must withstand the most extreme,harsh test process,the purpose of certification designed to verify whether the product meets the performance,safety and quality requirements,so as to achieve the purpose of property protection.
NM fire obtained fire diesel engine UL1247 and fire pump UL448 witnessed laboratory accreditation,fully proved that the company in terms of hardware and software strength,are to meet the
strict requirements of UL certification.