How do you size a jockey pump?
How do you size a jockey pump?
A rule of thumb for sizing jockey pump supplying underground piping is to use 1% of the fire pump rated capacity. For example: A fire pump with rated capacity of 1500 gpm. Then the jockey pump flow rate is 1500 gpm * 1% = 15 gpm.
How often should a jockey pump run?
For electric motor-driven fire pumps, we recommend at least running your equipment once a week for at least ten (10) minutes for a visual inspection. You do not need to flow and measure water during this test — just witness the equipment running and have someone qualified present to address any problems that may arise.
How do you pick a jockey pump?
“The pump manufacturer, Armstrong pumps, recommends, as a rule of thumb, to size the jockey for about 1 % of the rated flow of the main fire water pump. Also they recommend that jockey to be sized with 10 psi (0.7 bar) higher pressure than the system design pressure of the firewater ring.”
Why it is called jockey pump?
On a fire protection system requiring a fire pump, there is a small pump that maintains pressure above the pressure settings of the larger fire pump. Hence the name “jockey pump.” The purpose of a jockey pump is to maintain pressure in a fire protection piping system so the larger fire pump does not need to run.
How many GPM will a 1 hp pump?
One horsepower equals 3,960 gallons/minute/feet.
Is standard for jockey pump?
The capacity of the jockey pump shall neither be less than 3 percent (with a minimum of 180 l/rein) nor more than 10 percent of the installed pumping capacity. 6.7 Pumps (other than Jockey pumps) should be able to develop head of greater than 65 percent of rated head at capacity of 150 percent of rated capacity.
How long does a jockey pump last?
A fire pump’s lifespan is approximately 20-25 years and they can operate this long with the proper maintenance plan.
Is a jockey pump required?
A jockey pump is not required on systems utilizing a fire pump, however, due to their relative simplicity, jockey pumps are the most common method used to maintain system pressure. Since jockey pumps are not required to be listed, any pump capable of producing necessary pressure is acceptable.
What is jockey pump and fire pump?
Motor Sales Agency IntroductionA jockey pump is a small pump which is connected to a fire sprinkler system so that a certain pressure in the sprinkler system, and sized to ensure that if a fire-sprinkler is activated, there will be a system pressure drop.
Is jockey pump necessary?
How many GPH is a 700 hp?
Theoretically, the mechanical pump could provide the (approx) 60 gallons per hour that the engine would need, using the formula of 1/2 lb of fuel per horsepower per hour. That’s if you used a quality mechanical pump and not a stocker. So, 700 x . 5 = 350 gal.
What is the work of jockey pump?
A jockey pump is a small device that works together with a fire pump as part of a fire-protection sprinkler system. Also referred to as a pressure-maintenance pump, it is designed to maintain high pressure when the system is not in use. This is to keep the fire pump from running the entire time as well as ensuring the system stays in check.
How does jockey pump work?
A jockey pump is a small pump connected to a fire sprinkler system and is intended to maintain pressure in a fire protection piping system to an artificially high level so that the operation of a single fire sprinkler will cause a pressure drop which will be sensed by the fire pump automatic controller, causing the fire pump to start.
What type of pump is jockey pump?
Jockey pumps are typically small multi-stage 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. Grundfos CR pumps are perfect as the jockey pump in fire systems for industrial and commercial fire protection.