NZ Series

NZ Series Thermoplastic Pumps

iso_2858_5199_end_suction_horizontal_centrifugal_chemical_pump_non_metallic_acid_pp_pvdf_gfpp_njrp_300_240
Product Description NZ Series long-coupled thermoplastic mechanical seal process pump provides the most economical, combinatorial design which simplifies maintenance, reduces inventory, is able to give a near constant head for a wide flow range. NZ pumps are injection moulded, horizontal, side discharge, back pull-out, volute casing type, single stage, end suction centrifugal pumps. NZ Series pumps are specifically designed to provide optimum pumping solutions with reduced life cycle cost for all chemical applications.
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Specifications

Operating Frequency 50Hz 60Hz
Capacity [Q] upto 40 m3/hr (176 US gpm) 20 US gpm (50 m3/hr)
Head [H] upto 38 m (125 ft) 176 ft (54 m)
Motor Power [P] upto 15 kW (20 hp) 25 hp (18.5 kW)
Viscosity upto 150 mPas (cP)
Suction Lift upto 8 m (26 ft) with priming chamber*
Maximum Working Pressure 10 bar (145 psi)
Maximum Specific Gravity [SG] 1.8 – 3.0
Minimum Continuous Flow [MCF] 2.5 m3/hr (11 US gpm)
Maximum Temperature PP: 82°C (180°F), GFRPP: 90°C (194°F), PVDF: 104°C (220°F)
Suction & Delivery Connection ANSI B16.5 – Class 150, DIN 2501, BS4504 – PN16, BSP or NPT*
Shaft Seal Single (TB/RA) & Double (DROTT) Mechanical Seals
Bearings Rolling Element Bearings
Lubrication Grease / 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
Polymer lined casing cover Single & Double mechanical seals can be accommodated without any modifications
Bearings Bearings capable of carrying high dynamic loads to run beyond standard lifetime (17500 hrs)
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
25-125 40 25 max 35 min 8 max 15min 2 1440rpm 2900rpm
25-160 40 25 max 48 min 15 max 15min 2 1440rpm2900rpm  
32-125 50 32 max 35min 8 max 20 min 2 1440rpm2900rpm  
32-160 50 32 max 48min 15 max 20min 2 1440rpm 2900rpm
50-125 65 50 max35 min 8 max35 min2 1440rpm2900rpm
50-160 65 50  max48 min15  max 35 min2 1440rpm2900rpm
50-200 65 50  max14 min7  max35 min 2 1440rpm

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