DESIGN Pumps YPSP UL FM
- Single stage, horizontal, separable body, radial impeller, double suction pumps.
- The back-to-back design of the double entry radial impellers eliminates all thrust.
- The suction and discharge flanges are along the same axis.
- Easy assembly feature.
- Double suction pumps have the advantage of low NPSH features.
- The pump and electric motors are connected to the chassis by means of flexible. Diesel motors can alsa be used.
- in standard manufacture, the impeller, the body abrasion gasket and the gland are bronze while the casing is of stainless steel
TECHNICAL specifications pump YPSP UL FM
|Flow Range||100 – 2000 gpm (23 – 454|
|Head Range||60 – 274 psi (44 – 188 m)|
|Operating Pressure||16 – 24 bar|
|Speed Range||1800 – 2900 rpm|
|Suction Flange||4” – 10”|
|Discharge Flange||2 1/2” – 8”|
SCOPE OF APPLICATION pump YPSP UL FM
FIELDS OF APPLICATIONS
- Fire systems
- Power plants
Bearings pump YPSP UL FM
Maintenance-free self-lubricating bearings have been used as pump bear- ing elements
Pumped Liquids YPSP UL FM
It is used in pumping clean and sea water that do not contain solid particles
Sealing Pump YPSP UL FM
Gland packing is preferred in fire groups with shaft sealing certificate.
Specifications of fire pumps – YPSP UL FM
What are the specifications of fire
pumps per NFPA 20?
NFPA; due to the special importance of fire pumps, has set a standard for both material specifications and performance specifications. The compliance of a fire pump with NFPA 20 requires the fulfilment of these requirements. When these specifications are examined, it is seen that there is a very serious difference between general purpose pumps and fire pumps. The fire pumps; throughout their operating life; are designed to provide maximum reliability and net outlet pressure value. The design criterion in general purpose pumps is the maximum efficiency and economic operation feature.
Listed fire pumps; are available for rated flow rates between 100-8000 gpm. The nominal pressure values are given as 30-262 psi (20 mss-185 mss) for horizontal shaft pumps, 26-510 psi (18m55-358m55) for vertical shaft pumps.Listed centrifugal pumps; are classified as horizontal shaft end suction, In-line type, horizontally separable casing and vertical shaft turbine type.
Material specifications of fire – YPSP UL FM
pumps per NFPA 20
Pump Casing: Pump casing material must be GG 25 grey cast iron or GGG40 nodular cast iron according to the pressure class.Pump Impeller: According to NFPA 20, UL 448, FM, the fire pump ımpeller must be made of Bronze or stainless steel cast material. As in general purpose pumps, the ımpeller made of grey cast iron material is never used.
Pump Shaft: The pump shaft must be made of AISI316 stainless steel material. Furthermore, FM and UL 448 standards brought strict design rules for the shafts to be used in fire pumps.
Sealing: It must be provided with a gland packing and the packing bearing must be designed to receive at least five lines of packing. Bearing housing: The bearings must be grease lubricated roller bearings. The bearings used must be selected to operate at least 5000 hours smoothly at maximum load.