Read more pdf the mvi features an extra thrust bearing in the pump end, elimating extra thrust loads on the motor. These problems are all solved with a variable speed jockey pump controller. Jockey jockey fire suction discharge pump casing date name pump press. The pressostat connected to the jockey pump 1 should be set to. The control valves to and from the jockey pump shall be supervised butterfly. Where air or hydraulic starting is provided see 11. Nfpa20 standard for the installation of stationary pumps. Also they recommend that jockey to be sized with 10 psi 0.
Jan 09, 2018 green industrial detroit diesel 12v71 71237300 fire pump engine with 14x10x20 model 9000 pump used duration. Mp15 jockey pump controller service entrance rated. One is the main fire pump which delivers large volumes of water to the fire standpipe system in case of fire. The fire pump unit itself consists of a pump, a drive, a driver coupling connecting the two, and a base plate. A jockey pump is a small pump connected to a fire sprinkler system in order to maintain a certain pressure in the sprinkler system, and sized to ensure that if a. Fire pump overview fire pump unit defined a fire pump is a device that provides the required water flow and pressure for a fire protection system. Ensure that all the precommissioning checks are carried out successfully. The jockey pump jp or pressure maintenance pumps pmp as. Jockey pump 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. These compact vfd jockey pump controllers are available from 1 to 3 hp, with 3 phase voltages ranging between 200 and 480 vac, 5060 hz. The jockey pump is usually a vertical multistage pump, electrical drive, dimensioned to keep the system pressurized, controlled by a pressure switch, compensating pressure variations resulting from small leaks in. The pump shall be hydrostatically tested and run tested prior to shipment.
Since the jockey pump is not required to be listed, the control valves and check valve are not required to be listed. If the fire fighting unit is completed with the jockey pump, there are also includ ed. A jockey pump is there to keep the pressure up in the pipe due to leaks and such, but has nothing to do with the actual operation of the fire pump during a fire. Pentair fairbanks nijhuis pvm series jockey pumps fire. Fire and jockey pump cut sheets with all pump capacities, ulfm approval, pump characteristics, features and accessories clearly indicated. Exception for onsite generators with continuous rating over 225% of fire pump motor fla. Jan 02, 2014 the image shows a jockey pump placed close to the main firewater pump. Ksb pumps and valves are made available through a very wide. Fire fighting systems packfire selection and dimensions table packfire. Oct 06, 20 jockey pump sizing jockey pumps should be sized for 1% of the flow of the main fire pump jockey pumps should be sized to provide 10psi more pressure than the main fire pump jockey pump should be sized so that it cannot meet the demand of the lowest flow fire protection fitting in the system 42. Grundfos, ebara, electra applications fire protection system project. The jockey pump is not as mundane as many engineers, contractors, and installers would have you believe. If you are utilizing the city water supply as the primary source for the pump, you need to make sure that an accurate city water test is used.
Pump curves with selection point clearly indicated. This controller shall be ul listed, and shall be of the same manufacturer as the main fire pump controller. Typically the jockey pump is sized to 1% of the fire pumps rated flow. Complete packages can be supplied electric motor, diesel engine and jockey pump on one. Already field tested, these controllers start and stop jockey pumps to smoothly maintain the system water pressure. Absolute water pumps jockey pumps are top of the line, always guaranteed to support any anti prevention methods you use. It is also suitable for condenser and chilled water, as well as for use with vfds. Dec 24, 2012 operating philosophy of a group of fire pump posted in industrial professionals. Jockey pump controllers fire pump controllers metron. That small guy on the horse is referred to as a jockey. Also, remember that the election of the jockey depends of the longitude, size, type and leaks of the underground piping. Today, you can expect to find a fire pump in almost any public building or factory. Jockey pumps or sprinkler system pressure maintenance pumps are a low cost yet essential component of a fire pump sprinkler system. Installation and operation instructions peerless pump.
Fire pumps are normally purchased as a complete package that includes the following. The fire protection solutions for mainland applications include entire pump systems, complete with jockey pumps and main pumps that are either diesel or electrical driven, while a dedicated range of grundfos offshore pumps is available for vessels and oil rigs. Providing automatic type operation, the pressure switch is identical to that used in the main fire pump controller with the start point set about five pounds higher to. Piv, main drain and water flow alarm testingnfpa 25 duration. A jockey pump, or a pressuremaintenance pump, is a small apparatus that works together with a fire pump as part of a fireprotection sprinkler system. 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.
Apr 29, 2016 jockey pumps are small capacity pump which overrides main fire water pump electric motor and diesel. Jockey pump for fire pump system electrical engineering. The fire pump motor controller is 150 ft from the service. The jockey pump automatically maintains pressure in the system in case of leaks and prevents the duty pumps from starting up when not required. Since the activation of the large flow main fire pump. The auxiliary jockey pump controller, if required and specified on the plans and specifications, shall be factory assembled, wired, and tested and specifically designed for this type of service. Jockey pump controllers offer the convenience of dependable factorywired and tested units, all in one enclosure. The other is a low flow, high head jockey pump which keeps the system pressurized during normal non fire conditions.
The jockey pump is usually a vertical multistage pump, electrical drive, dimen sioned to keep the system pressurized, controlled by a pressure switch, com pensating pressure variations resulting from small leaks in the installation. Mar 28, 2002 what is a jockey pump and why does it carry that title. Page 3 imsa journal novemberdecember 2010 3 low air or hydraulic pressure. Fire fighting pump room with fire pump, jockey pump and. When additional fire pumps are installed in series, use 10 psi 0. Jockey pump is set such that it starts at low pressure in header and stop at high pressure to maintain the desire pressure in the network. The mvis is primarily used in pressure boosting applications, and is ideal for locations where subdued noise levels are required such as hospitals, apartments, hotels and office buildings. With the through the door display you can monitor the system pressure, the motor volts, amps, power, and even the motor speed. Hello, please, i need your comment about the operating philosophy of a group of fire pump. Nfpa20 standard for the installation of stationary pumps for fire protection systems standard brand name. In this case low capacity and high pressure is needed.
A fire pump is a part of a fire sprinkler systems water supply and powered by electric, diesel or. There is a small guy riding on top of or above a large horse. Jockey pumps are typically small multistage centrifugal pumps, and do not have to be listed or certified for fire system application. The other is a low flow, high head jockey pump which keeps the system pressurized during normal nonfire conditions.
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. Nfpa 20 suggests that the jockey pump be sized 1% of pump flow at 10 psi over pump rated pressure. Aug 29, 2016 a jockey pump, also known as a pressuremaintenance pump, is a small apparatus that works together with a fire pump as part of a fireprotection sprinkler system. Hence a jockey pump is an important part of the fire pumps control system. Jockey pump wouldnt stop runningquick fixfire pump. The mvis range is available in 15, 30 and 50 usgpm nominal flow ranges, which make up the thirteen. Mar 17, 2015 with the fire pump net churn at about 185 or above psi nominally, the start setting would be 175170psi on and 185 psi off based on nfpa 20, a. All jockey pump valves to be located as required per nfpa 20. Dp stackable jockey pumps are available in a variety of sizes to meet your application needs. Fire jockey pumps the worst thing that can happen to a vessel besides going down is fire. Providing automatic type operation, the pressure switch is identical to that used in the main fire pump controller with the start point set about five pounds higher to cause the jockey pump to operate first.
A 25hp, 208v 3phase fire pump motor is 175 ft from the service. The test pressure is to be upto 2 times the maximum working pressure of the pump, but in no case less than 250 psi 1724 kpa to ensure no rupture or leakage through the castings at the test pressure. Electrical driven fire pump and jockey pump follow as. Street indianapolis, in 46202 bulletin 4857341 rev. Jockey pump is a lowflow, highpressure pump it is designed to maintain a constant pressure on the system, accounting for minor pressure fluctuations. Each pump is tested hydrostatically for not less than 5 minutes. If you work with the connections or controls for fire pumps, you need to understand article 695. The mvi is available in oval or ansi flanged connections, with flows up to 150 usgpm, and heads up to 750 feet. Jockey pumps are typically small multistage centrifugal pumps, and do not have to. 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.
Dp jockey pumps have been manufactured in the netherlands since 1950. Feb 15, 2017 dear sir, i would like to request for fire pump setting, for jockey pump star t point and stop point. A jockey pump is a small pump connected to a fire sprinkler system and is intended to maintain pressure in a fire protection. Jockey pump and axis lines supplied as separate accessories. Geothermal and fire protection products jockey pumps. What size conductor must you install to the fire pump motor controller. Jockey pump for fire pump system jockey pump for fire pump system tinotoro electrical op. A rule of thumb for sizing jockey pump supplying underground piping is to use 1% of the fire pump rated capacity. Peerless pump company pjpc jockey pump controllers installation and operation instructions peerless pump company 2005 dr. It is designed to keep the pressure in the system elevated to a specific level when the system is not in use, so that the fire pump doesnt have to run all the time and the system. The overcurrent protection shall be sized at short circuit ratings nec 430. Tornatech jockey pump controllers are built to nema industrial standards and are ul listed.
Sized to carry locked rotor currents of the fire pump motors, jockey pump and associated fire pump accessory equipment. These controllers are intended for use with fire pump systems. Thats not typically a function you would worry about during a short power outage. The jockey pump shall be installed in accordance with nfpa 20. Nfpa20 standard for the installation of stationary pumps for. Both multistage ranges use a solid aisi 304 stainless steel construction. There are several types of jockey pumps each having their advantages to a given application. Then the jockey pump flow rate is 1500 gpm 1% 15 gpm. Operating philosophy of a group of fire pump industrial. The jockey pump, an important part of a fire pump system. Fire pump, jockey pump, electric fire pump, diesel fire.
The stainless steel, stackable jockey pump design is lead free and a performance and dimensional match to most grundfos, goulds, and aurora jockey pumps. When starting a fire pump design, the most important item to consider is the water supply. Pressure of jockey pump shall be greater than the pressure of main fire pump by minimum of 10 psi to avoid. A jockey pump is sized for a flow less than the flow to one sprinkler in order to ensure a system pressure drop. The pump shall be hydrostatically tested at a pressure of not less than one and onehalf times the. Pressure pressure packing relief valve timer on off on temp operating 1. Except for no test header requirement, a jockey pump has the same basic components as the main fire pump. Fire pumps peerless pump offers fire pumps, process pumps, industrial pumps, vertical pumps, horizontal pumps, selfpriming pumps and industrial pumps. Jockey pumps multistage booster pumps absolute water pumps. If the underground piping leaks excessively, jockey pump sizing must be increased to the maximum permitted.