Our EHEDG Lobe Pump is a highly versatile sanitary solution designed for the Food, Cosmetic and Pharmaceutical industries. Featuring CIP and SIP systems for optimal cleaning and sterilisation, this EHEDG-certified pump meets the highest hygiene standards. Engineered from Cast Stainless Steel AISI 316L, this pump provides increased corrosion resistance for hygienic and sanitary applications, while the Duplex Stainless Steel 1.4462 shafts ensure extra rigidity during operation. For added versatility in your operation, this pump can be mounted horizontally or vertically (self-draining when vertical), and is ATEX-available for use in hazardous environments.
Typical applications for our EHEDG Lobe Pump:
Overview
Features & Benefits
Specifications
Our EHEDG Lobe Pump is a Sanitary Lobe Pump produced specifically for hygienic and sanitary applications within the food, chemical, and pharmaceutical industries. The series is fully compliant with EHEDG standards and has been designed with a heavy emphasis on achieving maximum performance & efficiency whilst offering compactness, robustness, cleanability & low maintenance costs thanks to its front pull-out design. The Lobe Pump range consists of 11 pump sizes, depending on the flow and solids passage requirements. Similarly to other pumps in Pomac’s range, this Pump is entirely machined from cast Stainless Steel AISI 316L with a surface roughness of <0.8 as standard (<0.5 on request) to provide increased corrosion resistance.
Competitors’ units employ a cast iron gearbox with epoxy paint which can become eroded over time and need replacing/repairing. These Lobe Pump shafts are constructed from Duplex Stainless Steel 1.4462 to provide extra rigidity in operation. The pump can be fitted with several different sealing options and elastomer materials to suit almost any application.
With capacities up to 110 m³/hr and discharge pressures up to 15 Bar, this range of Sanitary Lobe Pumps is suitable for various applications. This, coupled with some key features and benefits, puts it apart from its competition as one of the most versatile Lobe Pumps on the market today. With the delivery of each product, the customer receives a lobe rotor tool and dummy rotors to facilitate easy removal and replacement of lobes and mechanical seals, further reducing downtime.
- Max solids passage up to 60mm
- Speed range up to 1500 rpm
- Fully EHEDG Compliant
- Wide Variety Interchangeable Sealing Options – Modular design
- Complete Front Pull-Out of Mechanical Seal & Lobes
- High-Efficiency B-Wing or Low Pulsation Quattro Lobe Designs available
- Flat Front Cover to ensure more efficient cleaning
- Can be mounted Horizontally or Vertically in pipework
- When mounted vertically the pump is self-draining
- Accurate flow control from 0.04 – 2.5 l/rev
- Discharge Pressures up to 15 Bar
- Variable fluid temperatures up to 140ºC
- CIP/SIP friendly – minimal dead spaces
- Suitable for Shear Sensitive Fluids
- Suitable for pumping fragile solids
- Wide variety of connection types
- Optional Heating & Cooling Jackets
- Optional Air or Spring Loaded Integral Safety Valves
- ATEX Rated
Traditional Construction VS Advanced EHEDG Lobe Pump Construction
Traditional Construction Disadvantages
- Long shaft overhang
- Shaft deflection
- Sensitive to temperature shock
- No Front Pull Out construction
- Not CIP approvable
- Heavy construction
Advanced EHEDG Lobe Pump Construction Advantages
- Short shaft overhang – Less expansion of shaft due to high temperatures during CIP procedures.
- Very low shaft deflection
- Less sensitive to temperature shock
- Complete stainless steel design – enhanced cleanliness
- Modular design: All mechanical seal variants can be fitted to the same housing & pump can easily be switched from horizontal to vertical execution – all holes for mounting feet are pre-drilled.
- Front Pull Out construction
- CIP cleanable
- “Lightweight” construction
| Max Capacity |
110 m³/hr |
| Max Pressure |
150 meters (250 meters upon request) |
| Max Viscosity |
<1’000’000 cPs |
| Max Temperature |
140ºC |
| Max Solids Passage |
60 mm – Model & Screw Type Specific |
| Lobes |
Bi-Wing or Quattro Lobe |
| Connections |
¾” – 4” |
| Connection Types |
Couplings: DIN11851, DIN11864-1, SMS1145 Flanges: EN1092-1, Rectangular, DIN11864-2, ANSI Tri-Clamps: ISO2852, DIN32676, DIN11864-3 |
| Shaft Sealing |
Single mech. seal SIC/SIC or TC/TC Double mech. seal SIC/SIC or TC/TCWDR Lip Seal Single O-ring Double O-ring with quench |
| Sealing Materials |
SiC / SiC or Tungsten / Tungsten |
| Elastomer Materials |
EPDM, Viton, NBR, Teflon, KALREZ, e.g. according to FDA |
| Wetted Parts |
AISI 316L (AISI 316L Mo Ni or Hastelloy CX2MW N26022 upon request) |
| Surface Roughness |
<0.8 Micron (Std.), <0.5 upon request (Mechanical & Electro-Polished) |
| Hardening |
Hard Inchromizing & Plasma Nitriding (Optional) |
| Drives |
Standard: IEC, IE2, B3/B5, IP55, isolcl. F, PTC Optional: IE3, ATEX, CSA/UL, Decentralised variable speed drive |
Capacity Range
| Pump Model |
Displacement Litres / 100 Rev |
Max Solids Passage mm |
Max Pressure Bar |
Max Speed Rpm |
Weight Kg |
| PLP 1-¾ |
4.2 |
13 |
15 |
1500 |
12 |
| PLP 1-1 |
6 |
13 |
15 |
1500 |
12.5 |
| PLP 1-1.5 |
10 |
13 |
15* |
1200 |
14 |
| PLP 1.5-2 |
20 |
22 |
8 |
1200 |
21 |
| PLP 2-1.5 |
22 |
23 |
15 |
1200 |
37 |
| PLP 2-2 |
30 |
23 |
15 |
1200 |
39 |
| PLP 2-2.5 |
36 |
23 |
15* |
1000 |
44 |
| PLP 3-2 |
55 |
37 |
15 |
1000 |
101 |
| PLP 3-3 |
100 |
37 |
15 |
1000 |
105 |
| PLP 3-4 |
130 |
37 |
15* |
750 |
115 |
| PLP 4-4 |
250 |
52 |
15 |
750 |
250 |
*Depends on the gap between the rotor and pump casing.
The values mentioned above are maximum values. The operational values may be lower because of the liquid characteristics of the system design.
