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DW+ Series – Piston & Bi-Lobe Rotor Pumps
The DW+ Series is a versatile, positive displacement pump ideal for high-viscosity and shear-sensitive fluids. Its gentle, pulsation free, low shear design, ensures gentle consistent flow and easy maintenance. Perfect for dairy, beverage, food, pharmaceuticals, personal care, chemical and industrial markets, it meets stringent sanitary standards while boosting operational efficiency.
Beverage
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Dairy Processing
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Food
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Pharmaceutical and Toiletries
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Chemical / Industrial
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Product Specifications
The DW+ pump series is designed for ultra-hygienic applications. The range consists of 6 sizes (27 models) with capacities ranging from 3 liters/100 revs to 519 liters /100 revs (0.8 gal/100 revs to 137 gal/100 revs) and pressures up to 30 bar (435 psi). All product-contact parts are made from AISI 316L stainless steel and all elastomers comply with FDA-requirements.
There are two types of rotors available: Piston and Bi-lobe. For general or standard applications, the Bi-lobe rotor is typically a suitable solution. However, the piston rotor is the optimal choice for shear-sensitive products due to its long sealing path and minimal clearance design.
Elastomer Material
EPDM. FPM and FKKM (Perfluoro elastomer)
Standard Connections
Tri-clamp is the standard connection. Other sanitary and industrial fittings are available.
2 Rotor materials
316L and Non-galling alloy
2 Rotor Options by Type
Piston and Bi-lobe rotors. On the smallest model in each size, the piston rotors can be easily replaced with bi-lobe rotors without altering the rotor case. Additionally, the pump’s porting can be switched between horizontal and vertical orientations (and vice versa) without requiring any modifications to the pump or the use of a specialized gear case assembly.
4 Rotor Options by Application
- Multi Duty Rotors
Standard rotors suitable for most applications. The clearance is greater than that of the high efficiency rotors.
- High-Efficiency Rotors
Designed for low viscosity products. The size of the rotors has been increased, and the clearance is minimal.
- High Temperature Rotors
The Bi-lobe rotors can be supplied as high temperature rotors, suitable for product temperatures up to 180°C (356°F). The rotors are smaller for expansion due to the temperature.
- Super tight Rotors
Minimum clearance in all the options to make minimum product slip back.
6 Advanced Shaft Seal Design
The pump offers a variety of front-loaded interchangeable shaft seals tailored for specific applications:
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Single Mechanical Seal.
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Flushed single Mechanical Seals
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Flushed double Mechanical Seals
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Lip Seals
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Confectionary Seals
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Packed Gland Seal:
3 Accessories
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Integrated Pressure Relief Valve
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Thermal Jacket
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Rectangular Inlet
Certificates
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Material Heat Certificate
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2.1 EN10204
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2.2 EN10204
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3.1 EN10204
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Certified Approval Drawing
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GA drawing 2D (*pdf)
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Pump Model 3D (*stp)
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ISO 9001 Certification
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GOST certificate
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3A Certificate
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RA measurement Report
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Electro-Polish/Passivation Certificate
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Food Contact Certificate
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NPSH Test (one duty)
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FDA Seal Certification