Blackmer® STX DEF Series Pumps, which are part of the Stainless Line of sliding vane pumps, meet or exceed all industry specifications for DEF Aqueous Urea Solutions (AUS32), also known as AdBlue®. Made from 316 stainless steel, the pumps are compatible with DEF and feature external ball bearings, non-metallic Duravanes, PTFE elastomers and Blackmer chemical mechanical seals. The design also includes an adjustable relief valve, weld flanges and self-priming capability. The STX3-DEF has a versatile mounting bracket.
STX3-DEF pumps offer fast fluid off-loading. For example, typical off-loading of a 6,000 gallon (22,700 liter) tanker can be unloaded as quickly as 24 minutes. The Blackmer non-metallic vanes self-compensate for wear and allow the STX DEF Series pumps to run dry for short periods of time for self-priming and blowing lines clean, without pump damage. The STX DEF Series is designed to offer easy maintenance because the internal wear is almost completely limited to the sliding vanes, which can be replaced with ordinary hand tools.
For applications that require smaller flow rates, the Blackmer SX1-DEF Series Pump constructed from 304 & 316 stainless steel, offers 2 to 10 gpm (8 - 38 L/min) values.
Features and Benefits
- Meets or exceeds all industry specifications for DEF Aqueous Urea Solutions (AUS32)
- 316 stainless-steel pump with external ball bearing construction (SX1 model has 304 stainless steel for the cylinder and 316 stainless steel for the head).
- Blackmer chemical mechanical seals and non-metallic vanes for longer life with corrosive products
- Pump design and operation minimizes shear and agitation
- 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
- High suction lift and line-stripping capabilities
- Low maintenance and low life-cycle costs
Applications
Loading & unloading corrosive & non-corrosive fluids:
- Diesel Exhaust Fluid (DEF)
- AdBlue
Performance and Specifications
AVAILABLE MODELS
- STX2-DEF
- STX1220-DEF
- STX3-DEF
- SX1-DEF
VISCOSITY
- STX2-DEF: 0.2 - 990 cP
- STX1220-DEF: 0.2 - 22 cP
- STX3-DEF: 0.2 - 4,250 cP
- SX1-DEF: 0.2 - 7 cP
CONNECTION ORIENTATION
- STX-DEF: Side Inlet | Top Outlet
- SX1-DEF: Side Inlet | Side Outlet
TEMPERATURE
- -25°F to 240°F (-32°C to 115°C)
NOMINAL FLOW RATE RANGE
- STX2-DEF: 16 - 60 gpm (61 - 227 L/min)
- STX1220-DEF: 45 - 92 gpm (170 - 348 L/min)
- STX3-DEF: 80 - 250 gpm (303 - 946 L/min)
- SX1-DEF: 2 - 10 gpm (8 - 38 L/min)
DIFFERENTIAL PRESSURE
- STX-DEF: 125 psi (8.6 bar)
- SX1-DEF: 25 psi (1.7 bar)
MAXIMUM WORKING PRESSURE (MAWP)
- STX-DEF: 175 psi (12.1 bar)
- SX1-DEF: 50 psi (3.4 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
MIN/MAX SPEED (rpm)
- STX2-DEF: 150 - 800
- STX1220-DEF: 700 - 1,200
- STX3-DEF: 300 - 800
- SX1-DEF: 1,450- 1,750
Dimensions
| Pump Model | L | W | H | Approx. Wt. | |
|---|---|---|---|---|---|
| STX2-DEF, STX1220-DEF | in | 16-3/4 | 9-4/7 | 8-2/3 | 70 lb |
| mm | 425.4 | 242.9 | 220.6 | 32 kg | |
| STX3-DEF | in | 20-2/3 | 12-5/8 | 11-5/9 | 132 lb |
| mm | 524.5 | 320.8 | 293.7 | 60 kg | |
| SX1-DEF | in | 7-1/3 | 11-4/5 | 8-4/7 | 36 lb |
| mm | 160.3 | 322.3 | 171.5 | 16 kg |
Materials of Construction
| Parts | Materials |
|---|---|
| Cylinder, Heads, Relief Valve Cover (SXT models) | 316 Stainless Steel: ASTM A743, CF-8M |
| Cylinder (SX1) | 304 Stainless Steel |
| Head (SX1) | 316 Stainless Steel |
Pump Options
| Options | Details |
|---|---|
| Orientation Options | Right Hand: INLET is to the right, when looking from driven side |
| Porting Options | STX-DEF: Top Outlet: Outlet 90° offset from inlet |
| SX1-DEF: Side Outlet: Outlet 180° inline porting | |
| Connection Options | STX3-DEF: 3-in. butt weld stainless steel |
| STX2-DEF, STX1220A-DEF: 2-in. butt weld stainless steel | |
| SX1-DEF: 1" NPT Tapped Ports (standard); 1" BSP Tapped Ports (available option) | |
| Mounting Options | Pump only |
| Unit: Pump, Motor, Baseplate, Couplings, Guards | |
| Sealing Options | Blackmer single mechanical seal |
Vane Options
| Temperature Limits | Viscosity | |
|---|---|---|
| Duravane | -25°F to 240°F (-32°C to 115°C) | STX2A-DEF: 0.2 - 990 cP STX1220A-DEF: 0.2 - 22 cP STX3-DEF: 0.2 - 4,250 cP SX1-DEF: 0.2 - 7 cP |
Elastomer Options
| Material | Temperature Limits |
|---|---|
| PTFE - SS Spring | -25°F to 240°F (-32°C to 115°C) |
| SX1-DEF: Ethylene Propylene (EP) | -25°F to 240°F (-32°C to 115°C) |