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Item: NP3F
Description: NP3F sliding vane pump, for high temperature, high pressure, and high viscosity requirements.
NP3F-product image
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NP3F, Vane Pump, Single Ended, Cast Iron, 276 GPM

Item: NP3F
Description: NP3F sliding vane pump, for high temperature, high pressure, and high viscosity requirements.
  • Mounting: PUMP ONLY
  • Inlet Size: 3
  • Model: NP3F
  • Discharge Size: 3
  • Max Operating Pressure: 225.0
  • Max Flow Rate (GPM): 276.0
Attributes for item NP3F
Shipping Weight (lbs):
137
Accessories:
0 None
Bypass Valve Relief Valve Spring Setting:
0
Elastomers:
2 FKM ELASTOMERS
Flanges:
N NPT FLANGES
Mounting:
PUMP ONLY
Relief Valve:
1 STANDARD VALVE
Rotor and Shaft:
1R SINGLE END KEYED RH
Relief Valve Spring Setting:
81
Relief Valve Spring:
4 51-110 PSI STEEL RV SPRING
Standard Construction 1:
0 STANDARD SELECTION - SC1
Standard Construction 2:
0 STANDARD SELECTION - SC2
Standard Construction 3:
0 STANDARD SELECTION - SC3
Standard Construction 4:
0 STANDARD SELECTION - SC4
Seal:
G0 PTFE PACKING
Standard Relief Valve Spring Setting:
1
Vanes:
4 DURAVANE
Lead Time (days):
24
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Performance for item NP3F

At 500 RPM and 100 psi differential pressure, the NP3/NPH3 pump delivers 205 gpm (776 lpm) and requires 18 bhp (13.4 kW) with a fluid viscosity of 7,500 SSU.

At 100 RPM and 100 psi differential pressure, the NP3/NPH3 pump delivers 39 gpm (148 lpm) and requires 3.4 bhp (2.5 kW) with a fluid viscosity of 20,000 SSU.

Item Overview for Blackmer NP3F
The Blackmer NP3F is a 3" single-ended sliding vane pump finished in ductile iron construction. It also brings pre-engineered Integrated Unit Assemblies for drop-in installation. As part of the NP lineup, it shares parts and service procedures with the rest of the range. Capacity extends to 276 GPM, shortening load and unload cycles. Power reaches the pumping chamber through a single-ended keyed shaft turning right-hand, where Duravane vanes ride out against the liner to sustain flow as they wear. Containment comes from PTFE packing backed by FKM elastomers, a combination chosen for punishing liquids. NPT connections speed connection during commissioning and later service. Overpressure protection arrives built in, with an internal relief valve shielding the casing and downstream piping. Supplied as a bare unit, it drops into an existing drive arrangement or a purpose-built skid.