Description
NP Series Sliding Vane Pumps
Specifically designed to offer maximum versatility for handling a wide variety of clean non-corrosive liquids, NP Series Sliding Vane Pumps, which are part of the Iron Line, are a general purpose positive displacement pump ideal for applications where high temperature, high pressure, high viscosity and/or shaft sealing requirements dictate a sleeve bearing pump are used. The key to the NP Series’ versatility is the Blackmer® unique sliding vane rotor design that provides sustained, high level performance over a wide viscosity range. Slow operating speeds and non-pulsating flow minimizes shear and agitation of the fluid.
Performance and Specifications
AVAILABLE MODELS
- NP1.5
- NP2
- NP(H)2
- NP2.5
- NP(H)2.5
- NP3
- NP(H)3
- NP4
- NP(H)4
NOMINAL FLOW RATE RANGE
- 1.5″: 2 – 47 gpm (8 – 178 L/min)
- 2″: 10 – 77 gpm (38 – 291 L/min)
- 2.5″: 20 – 136 gpm (76 – 515 L/min)
- 3″: 60 – 276 gpm (227 – 1,045 L/min)
- 4″: 220 – 525 gpm (833 – 1,985 L/min)
DIFFERENTIAL PRESSURE
- 125 psi (8.6 bar)Â – Closed Rotor
- 200 psi (13.8 bar) – Open Rotor
MAXIMUM WORKING PRESSURE (MAWP)
- 225 psi (15.5 bar)
TEMPERATURE
- -25°F to 500°F (-32°C to 260°C)
VISCOSITY
- 0.2 – 4,250 cP – Closed Rotor
- 0.2 – 22,000 cP – Open Rotor
MIN/MAX SPEED (rpm)
- 1.5″ – 3 “: 70 – 640
- 4″: 70 – 520
PRIMARY MATERIALS OF CONSTRUCTION
- NP: Cast Iron
- NPH: Ductile Iron
CONNECTION ORIENTATION
- NP: Side Inlet | Top Outlet
- NPH: Side Inlet | Side Outlet
VANE MATERIALS
- Duravane
- EC Laminate
- Bronze
- Iron
CATALOG OPTIONS
- Heating Jackets: steam, oil, electric
- Connections: NPT, Weld, ANSI Flange
- Elastomers: BUNA, FKM, PTFE
- Seal: mechanical, packed, triple lip
AVAILABLE CERTIFICATES
- Performance Test
- NPSH Test
- Material (actual or typical)
- Dimensional (pump only or unit)
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