SNP Series pumps, which are part of the Stainless Line of sliding vane pumps, are capable of meeting these demands 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 75 to 275 U.S. gpm (178 to 1,040 L/min) and standard operating temperatures of -25°F to 350°F (-31°C to 177°C), the SNP 2- and 3-in 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 Stainless Steel Sliding Vane Pump (2, 2.5 & 3-inch size). 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
Applications
- Corrosive or caustic fluids:
- Sugars
- Syrups
- Beer
- Beet juice
- Cider
- Flavor extracts
Performance and Specifications
AVAILABLE MODELS
- SNP2
- SNP2.5
- SNP3
VISCOSITY
- 0.2 - 6,300 cP
CONNECTION ORIENTATION
- SNP2/SNP2.5: Side Inlet | Side Outlet
- SNP3: Side Inlet | Top Outlet
TEMPERATURE
- -25°F to 350°F (-31°C to 177°C)
NOMINAL FLOW RATE RANGE
- SNP2: 12 - 75 gpm (46 - 284 L/min)
- SNP2.5: 46 - 134 gpm (174 - 507 L/min)
- SNP3: 90 - 275 gpm (341 - 1,040 L/min)
DIFFERENTIAL PRESSURE
- 150 psi (10.3 bar)
MAXIMUM WORKING PRESSURE (MAWP)
- 200 psi (13.8 bar)
AVAILABLE CERTIFICATES
- Hydrostatic Test
- Performance Test
- NPSH Test (consult factory)
- Material (actual or typical)
- Dimensional (pump only or unit)
PRIMARY MATERIALS OF CONSTRUCTION
- Stainless Steel
VANE MATERIALS
- Duravane
- EC Laminate
MIN/MAX SPEED (rpm)
- 125 / 640
Dimensions
Pump Model | L | W | H | Approx. Wt. | |
---|---|---|---|---|---|
SNP2 | in | 16-1/2 | 11 | 15 | 88 lb |
mm | 419.1 | 279.4 | 381 | 40 kg | |
SNP2.5 | in | 18-4/5 | 11-1/2 | 16-1/2 | 120 lb |
mm | 477.8 | 292 | 419.1 | 54.4 kg | |
SNP3 | in | 21 | 13-3/16 | 12-1/2 | 130 lb |
mm | 533 | 335 | 317.5 | 59 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 | SNP2/2.5: Side Outlet: Outlet 180° inline porting SNP3: Top Outlet: Outlet 90° offset from inlet | |
CONNECTION OPTIONS | NPT (threaded) | |
MOUNTING OPTIONS | Pump Only Unit: Pump, Motor, Baseplate, Couplings, Guards | |
SEALING OPTIONS | Blackmer single mechanical seal |
Vane Options
Material | Temperature Limits | Viscosity |
---|---|---|
Duravane | -25°F to 350°F (-32°C to 177°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 |
---|---|---|
SNP2 | Kit - Maintenance | 898946 |
SNP2 | Kit - Maintenance (jacketed) | 898987 |
SNP2 | Kit - Rebuild | 899046 |
SNP2 | Kit - Rebuild (jacketed) | 899087 |
SNP2.5 | Kit - Maintenance | 898947 |
SNP2.5 | Kit - Maintenance (jacketed) | 898988 |
SNP2.5 | Kit - Rebuild | 899047 |
SNP2.5 | Kit - Rebuild (jacketed) | 899088 |
SNP3 | Kit - Maintenance | 898948 |
SNP3 | Kit - Rebuild | 899048 |