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Blackmer SNP1.5 Sliding Vane Pump_2 Blackmer SNP 316 1 600 Sliding Vane Pump Blackmer SNP1.5 Sliding Vane Pump_3 Blackmer SNP1.5 Sliding Vane Pump_4

SNP High-Speed Sliding Vane Pumps High-Speed Stainless-Steel Pumps For Caustic or Corrosive Liquids

SNP Series pumps, which are part of the Stainless Line of sliding vane pumps, are capable of meeting the demands of high-speed liquid applications because they offer the flexibility needed to handle caustic and corrosive liquids at varying temperatures, pressures and viscosities. This allows them to be used in various loading/unloading and transfer applications, while the stainless-steel construction of the SNP model makes its ideal for handling a variety of corrosive or caustic fluids, which is a crucial consideration in the manufacture and shipping of biodiesel.

With flow rates of 4 to 32 U.S. gpm (15 to 121 L/min) and standard operating temperatures of -25°F to 350°F (-32°C to 177°C), the SNP1.25 and SNP1.5 pumps offer the best combined characteristics of sustained high level performance, energy efficiency, trouble-free operation and low maintenance cost.

Blackmer fully Integrated Unit Assemblies are the pre-engineered and pre-designed drop-in pumping solution. These unit assemblies, include motor, gearbox, baseplate, coupling safety covers, and a SNP 1.5-inch Stainless Steel Sliding Vane Pump. No alignment required with these pre-configured fully Integrated Unit Assemblies as they are ready for immediate drop-in installation.

Features and Benefits

  • 316 stainless-steel construction with metallized carbon sleeve bearings and non-metallic vanes for longer life with corrosive products
  • Use of nonmetallic sliding vanes and reversible carbon discs within the pump reduces friction and eliminates galling
  • Optional commercial mechanical seal with stainless steel, carbon, and PTFE construction
  • Optional Triple-Lip Cartridge Seal available 
  • Shaft stuffing box accommodates most standard aftermarket mechanical seal configurations
  • Jacketed pump head option for high temperature operation
  • Pump design and operation minimizes shear and agitation
  • Symmetrical bearing support assures even loading and wear for long life
  • Adjustable relief valve protects pump against excessive pressures
  • Advantages of sliding vane technology:
    • Unique sliding-vane pump design self-adjusts for wear to maintain flow rates
    • Excellent self-priming and dry-run capabilities
    • Sliding vane design provides sustained performance and trouble-free operation
    • Easy maintenance: vanes can be easily replaced without removing the pump from the piping system
    • High suction lift and line-stripping capabilities
    • Low maintenance and low life-cycle costs


  • Corrosive or caustic fluids:
    • Sugars
    • Syrups
    • Beer
    • Beet juice
    • Cider
    • Flavor extracts

Performance and Specifications

  • SNP1.25
  • SNP1.5
  • SNP1.25: 4 - 14 gpm (15 - 53 L/min)
  • SNP1.5: 8 - 32 gpm (30 - 121 L/min)
  • SNP1.25: Side Inlet | Side Outlet
  • SNP1.5: Side Inlet | Top Outlet
  • 0.2 - 6,300 cP
  • -25°F to 350°F (-31°C to 177°C)
  • 150 psi (10.3 bar)
  • 420 - 1,800
  • Stainless Steel
  • 200 psi (13.8 bar)
  • Duravane
  • EC Laminate
  • Hydrostatic Test
  • Performance Test
  • NPSH Test
  • Material (actual or typical)
  • Dimensional (pump only or unit)

SNP Nominal Flow Rate Range

SNP Nominal Flow Rate Range
Pump Model L W H Approx. Wt.
SNP1.25, 1.5 in 11-3/8 8 12-1/4 40 lb
mm 288.9 203.2 311.1 18.2 kg

Materials of Construction

Parts Materials
Cylinder, Heads, Optional Relief Valve  316 Stainless Steel: ASTM A743, CF-8M

Pump Options

Options Details
ORIENTATION OPTIONS Right Hand: INLET is to the right, when looking from driven side
Left Hand: INLET is to the left, when looking from driven side
PORTING OPTIONS Side Outlet: Outlet 180° inline porting
Unit: Pump, Motor, Baseplate, Couplings, Guards
SEALING OPTIONS Blackmer single mechanical seal

Vane Options

Material Temperature Limits Viscosity
Duravane -25°F to 240°F (-32°C to 115°C) 0.2 - 4,250 cP
EC Laminate -25°F to 350°F (-32°C to 177°C) 0.2 - 6,300 cP

Elastomer Options

Material Temperature Limits
PTFE - SS Spring -25°F to 350°F (-31°C to 177°C)

Maintenance Kits

Model(s) Description Part Number
SNP1.25 Kit - Maintenance 898944
SNP1.25 Kit - Maintenance (jacketed) 898985
SNP1.25 Kit - Rebuild 899044
SNP1.25 Kit - Rebuild (jacketed) 899085
SNP1.5 Kit - Maintenance 898945
SNP1.5 Kit - Maintenance (jacketed) 898986
SNP1.5 Kit - Rebuild 899045
SNP1.5 Kit - Rebuild (jacketed) 899086


Installation Operation Manuals (IOMs)

SNP1.25, SNP1.5, SNP2, SNP2.5, SNP3A SNPJ1.25, SNPJ1.5, SNPJ2, SNPJ2.5

Materials of Construction

SNP1.25, SNP1.5, SNP2, SNP2.5, SNP3A

Parts Lists

SNP1.25, SNP1.5, SNPJ1.25, SNPJ1.5