NJRP Series

NJRP Series Standard Chemical Pumps in GFRPP

iso_2858_5199_end_suction_horizontal_centrifugal_chemical_pump_non_metallic_acid_pp_pvdf_gfpp_njrp_300_240
Product Description NJRP Series pumps are injection moulded, horizontal, back pull-out, volute casing type, single stage, center line discharge,end-suction centrifugal pumps. Cast iron frames with the injection moulded wetted parts are designed to withstand high flange loads and pressures. NJRP pumps are excellent alternates to expensive super alloy pumps for hazardous, corrosive and toxic media. Dimensional and design criteria of NJRP pumps conform to ISO 2858 / ISO 5199 / EN 22858.
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Specifications

Operating Frequency 50Hz 60Hz
Capacity [Q] upto 200 m3/hr (881 US gpm) 881 US gpm (200 m3/hr)
Head [H] upto 100 m (300 ft) 300 ft (100 m)
Motor Power [P] upto 55 kW (75 hp) 120 hp (90 kW)
Viscosity upto 150 mPas (cP)
Suction Lift upto 8 m (26 ft) with priming chamber*
 Maximum Working Pressure 16 bar (232 psi)
Maximum Specific Gravity [SG] 1.8 – 3.0
Minimum Continuous Flow [MCF] 2.5 m3/hr (11 US gpm)
Maximum Temperature GFRPP: 90°C (194°F), PP-H: 82°C (180°F)
Suction & Delivery Connection ANSI B16.5 – Class 150, ISO 2084, DIN 2501, BS4504 – PN16
Shaft Seal Single (TB/RA) & Double (DROTT) Mechanical Seals
Bearings Rolling Element Bearings
Lubrication Oil
Motor Compatibility IS 1231, IEC 72-1, NEMA*
 

Design Features

Features Benefits
Impeller Locking Mechanism Prevents catastrophic failure in case of reverse rotation
Impeller Options Option of closed and semi open impeller with efficient blade passage for effective pumping of process media
Drain plug Darin plug allows swift drainage of hazardous liquids
Hydrodynamically optimized impeller Optimum suction behaviour with low NPSH requirement. Low Noise and Vibration Minimum axial loading on bearings and seal
Ergonomic design of non wet parts Large opening in lantern on both sides, top and bottom to easily access seal unit for maintenance and connection of auxiliary support units.
Low Stiffness Ratio shaft design Robust shaft design ensures less than 0.05 mm (0.002 in) deflection at seal faces thus maximizes seal life
Positive locking of impeller and shaft Prevents failure due to wrong rotation and ensures maximum torque transmission
Stepped sleeve Aids proper sealing at the impeller rear side and accurate alignment of rotary and stationary faces
 

Mechanical Seal

Type TB is single, outside mounted seal, uses PTFE bellows as secondary seal offering universal chemical resistance for a broad range of clean and corrosive pumping media.

Type TB is single, outside mounted seal, uses PTFE bellows as secondary seal offering universal chemical resistance for a broad range of clean and corrosive pumping media.

Type RA is single, outside mounted seal, employs fluoroelastomer (FKM/FFKM) as secondary seal to handle highly corrosive & homogenous slurries.

Type RA is single, outside mounted seal, employs fluoroelastomer (FKM/FFKM) as secondary seal to handle highly corrosive & homogenous slurries.

Type DROTT is double back to back arrangement seal; using fluoroelastomer (FKM/FFKM) & fluoropolymer (PTFE) as secondary seals suitable for handling hazardous chemicals, media with tendency to crystallize and to avoid dry running while pumping volatile liquids. Compatible pressurized buffer liquid needs to be circulated via thermosyphon or other external pressurized systems.

Type DROTT is double back to back arrangement seal; using fluoroelastomer (FKM/FFKM) & fluoropolymer (PTFE) as secondary seals suitable for handling hazardous chemicals, media with tendency to crystallize and to avoid dry running while pumping volatile liquids. Compatible pressurized buffer liquid needs to be circulated via thermosyphon or other external pressurized systems.

 

Hydraulic Coverage

Model Suction mm Discharge mm Head (m) Flow (m3/hr) Family Curve
32-160 50 32 max 40 min 13 max 30 min 2 1440rpm 2900rpm
32-200 50 32 max 48 min 15 max 30 min 2 1440rpm 2900rpm
50-200 80 50 max 60 min 15 max 70 min 3-5 1440rpm 2900rpm
65-250 100 65 max 100 min 25 max 90 min 5-7 1440rpm 2900rpm
80-315 125 80  35 max15 min 180 max10-15 min 1440rpm
100-315 125 100 35 max15 min 220 max10-15 min  1440rpm

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