Blackmer STX Series Sliding Vane Pumps

The stainless steel Blackmer® STX sliding vane pumps are designed for the fast loading and unloading of corrosive and non-corrosive fluids. They can offload a 22,700-liter tanker for as fast as 24 minutes.

The STX pumps are self-priming and easy to maintain, with the sliding vanes as the only wear-prone parts. The non-metallic vanes are also easy to replace using only ordinary hand tools. Other notable features of the STX sliding vane pumps include run-dry capability, adjustable relief valves, weld flanges, and versatile mounting brackets.

Features & Benefits

Know more about the features & benefits of using STX Series Sliding Vane Pumps.

316 stainless steel with external ball bearing for longer life with corrosive products
Pump design and operation minimises shear and agitation
Adjustable relief valve protects the pump against excessive pressures
Excellent self-priming and dry-run capabilities
Sustained performance and trouble-free operation
High suction lift and line-stripping capabilities
Easy to maintain – low maintenance and life cycle costs

Available Options

We customise pumps according to your specific application. Get in touch with us to know your options.

Vane material options
Sealing options
Elastomer options
Material options
Connection options
Porting options
Mounting/baseplates
Maintenance kits/spare parts

Key Specifications

Here are the key specifications of STX Series Sliding Vane Pumps.

Flow rates up to 946 L/min
Differential pressures up to 8.6 bar
Working pressures up to 12.1 bar
Viscosities up to 0.2 – 4,250 Cp

Applications

Here is a list of industrial applications for which STX Series Sliding Vane Pumps are commonly utilized.

STX: Loading & unloading corrosive & non-corrosive fluids:

Sulfonic acids
Specialty chemicals
Solvents
Latex paints
Liquid sugars
Vegetable oils

STX-DEF: Loading & unloading corrosive & non-corrosive fluids:

Diesel Exhaust Fluid (DEF)
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Blackmer STX Sliding Vane Pumps Range

    
    STX
    STX-DEF
  
    Flow rate
    Up to 946 L/min
    Up to 946 L/min
  
    Differential pressure
    8.6 bar
    Up to 8.6 bar
  
    Max working pressure
    12.1 bar
    Up to 12.1 bar
  
    Viscosity
    0.2 - 4,250 cP
    0.2 - 4,250 cP

	STX	STX-DEF
Flow rate	Up to 946 L/min	Up to 946 L/min
Differential pressure	8.6 bar	Up to 8.6 bar
Max working pressure	12.1 bar	Up to 12.1 bar
Viscosity	0.2 - 4,250 cP	0.2 - 4,250 cP

PRINCIPLE OF OPERATION

Blackmer sliding vane pumps use a rotor with sliding vanes to draw liquid into the pump. This rotor is located close to the wall of the cam so that a crescent-shaped cavity is formed on the opposite wall. Each rotor slot contains a sliding vane. As the rotor rotates, centrifugal force, hydraulic pressure, and push rods work together to extend each vane to the casing wall. This creates an expanding cavity on the inlet side – creating a vacuum that pulls liquid into the pump. The liquid is trapped between the vanes and the casing wall. The rotor rotation moves the liquid cavities around to the outlet side of the pump. The vanes are forced back into their slots at the outlet side, decreasing the cavity size and forcing the liquid through the outlet port.