PLP Sanitary Lobe Pump

PLP Sanitary Lobe pump

PLP Sanitary Lobe Pump

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Description

WHAT IS PLP SANITARY LOBE PUMP FOR?

The PLP Sanitary Lobe Pump is 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 range consists of 11 pump sizes, depending on the flow and solids passage requirements.

Like the PDSP Double Screw Pumps, the PLP Lobe 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 gear box with epoxy paint which can become eroded over time and need replacing/repairing. The pump shafts are constructed from Duplex Stainless Steel 1.4462 to provide extra rigidity in operation and the pump can be fitted with a number of 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 a wide variety of 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.

PLP Sanitary Lobe Pump

Operating Principle

PLP Sanitary Lobe Pump OPERATING PRINCIPLE

The PLP Sanitary Lobe Pump is a Rotary Positive Displacement Pump. Its operation is based on the counter rotation of 2 lobes in the pump casing. Both lobes are mounted onto their own shafts which are supported by bearing cartridges mounted directly onto the pump casing. One of the pump shafts is externally driven and an internal gear assembly drives the other shaft in the opposing direction. The screws rotate synchronously in opposing directions without touching.

When the lobes rotate and pass the suction port the volume between them increases and creates a vacuum which causes liquid to enter the suction port and the pump casing. During the rotation of the lobes the fixed amount of fluid is conveyed through the pump. As the lobes approach the discharge port the volume between them decreases which creates a pressure build-up, causing the fluid to flow out of the discharge port.

Typical applications
  1. Viscous & vulnerable Dairy products such as: Yoghurt, Custard, Butter & Curdled Milk
  2. Bakery products such as: Dough, Fat, Paste, Fondant, Creams
  3. Beverages such as: Beer, Fruit Juice, Lemonade
  4. Cosmetic products such as: Creams, Shampoos etc…
  5. Meat products such as: Chopped Meat, Extracts, Animal Food
  6. Egg products such as: Albumen, Yolk
  7. Viscous Food products such as: Sauces, Salads, Soups, Glucose Syrup, Chocolate
  8. Starch products such as: Mashed Potatoes

Features & Benefits

PLP Sanitary Lobe Pump FEATURES

  1. Speed range up to 1500 rpm
  2. Fully EHEDG Compliant
  3. Wide Variety Interchangeable Sealing Options – Modular design
  4. Complete Front Pull-Out of Mechanical Seal & Lobes
  5. High Efficiency B-Wing or Low Pulsation Quattro Lobe Designs available
  6. Flat Front Cover to ensure more efficient cleaning
  7. Can be mounted Horizontally or Vertically in pipework
  8. When mounted vertically the pump is self-draining
  9. Accurate flow control from 0.04 – 2.5 l/rev
  10. Discharge Pressures up to 15 Bar
  11. Variable fluid temperatures up to 140ºC
  12. CIP / SIP friendly – minimal dead spaces
  13. Suitable for Shear Sensitive Fluids
  14. Suitable for pumping fragile solids
  15. Wide variety of connection types
  16. Optional Heating & Cooling Jackets
  17. Optional Air or Spring Loaded Integral Safety Valves
  18. ATEX Rated

 

Traditional Construction vs Advanced PLP Construction

PLP Sanitary Lobe Pump Comparison

Traditional Construction Disadvantages

  • Long shaft overhang
  • Shaft deflection
  • Sensitive to temperature shock
  • No Front Pull Out construction
  • Not CIP approvable
  • Heavy construction

Advanced PLP 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
  • “Light weight” construction

Data & Limits
Max Capacity 110 m³/hr
Max Pressure 15 Bar (25 Bar 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 or the system design.

QTOT = QTH – QL, 

PTOT = PTH + PV

PLP 1-¾

PLP Sanitary Lobe Pump 1

PLP 1-1

PLP Sanitary Lobe Pump 1-1

 

PLP 1-1.5

PLP Sanitary Lobe Pump 1-1.5

 

PLP 2-1.5

PLP Sanitary Lobe Pump 2-1.5

 

PLP 2-2

PLP 2-2

 

PLP 2-2.5

PLP Sanitary Lobe Pump 2-2.5

 

PLP 3-2

PLP Sanitary Lobe Pump 3-2

 

PLP 3-3

PLP Sanitary Lobe Pump 3-3

 

PLP 3-4

PLP Sanitary Lobe Pump 3-4

 

PLP 4-4

PLP Sanitary Lobe Pump 4-4

Dimensional Data

PLP Sanitary Lobe Pump DIMENSIONS

Pump Type D CA CB FA1 FA2 FB FC1 FC2 FD FE FF FG PA PB SA SB SC SD SE1 SE2 SE3
PLP 1-¾ NW15 84 65.5 114 168 50 136 190 72 19 9 41.5 177.5 219 30 15 25×5 137 111.5 56.5 57
PLP 1-1 1″ 84 84 114 168 50 136 190 72 19 9 44.5 177.5 226 30 15 25×5 137 111.5 56.5 57
PLP 1-1.5 1.5″ 84 77.5 114 168 50 136 190 72 19 9 50.5 177.5 245 30 15 25×5 137 111.5 56.5 57
PLP 1.5-2 2″ 97 106 132 194 50 154 216 72 19 9 57.5 203 295 45 20 40×6 172.5 129 65 66
PLP 2-1.5 1.5″ 123 111 162 248 80 190 276 106 24 11 57.5 253 344 48 25 40×8 219 165.5 80.5 80
PLP 2-2 2″ 123 113 162 248 80 190 276 106 24 11 62.5 253 355 48 25 40×8 219 165.5 80.5 80
PLP 2-2.5 2.5″ 123 118 162 248 80 190 276 106 24 11 67 253 367 48 25 40×8 219 165.5 80.5 80
PLP 3-2 2″ 164 141 218 332 106 250 364 138 30 13 63 334 468 70 40 60×12 317 221.5 106.5 107
PLP 3-3 3″ 164 135 218 332 106 250 364 138 30 13 75.5 334 498 70 40 60×12 317 221.5 106.5 107
PLP 3-4 4″ 164 160 218 332 106 250 364 138 30 13 90.5 334 526 70 40 60×12 317 221.5 106.5 107
PLP 4-4 4″ 230 214 338 472 142 378 512 182 58 18 99.5 463 675 98 55 90×16 448 310 150 163

 

Mechanical Seals

PLP Sanitary Lobe Pump OPTIONSPLP Sanitary Lobe Pump is available with several, interchangeable, shaft sealing options. They are modularly built and are front pull-out by design making replacement and re-assembly very quick and easy. The type of sealing is dependent on the application requirements and can be supplied in the following variants & material combinations

Variants:

  1. M1 = single mechanical seal SIC/SIC
  2. M2 = double mechanical seal, quenched, SIC/SIC
  3. M4 = single mechanical seal TC/TC
  4. M5 = double mechanical seal, quenched, TC/TC
  5. O1 = single O-ring seal
  6. O2 = double O-ring seal, quenched
  7. L3 = WDR Lip Seal

Materials: Silicon Carbide/Silicon Carbide and Tungsten Carbide/Tungsten Carbide sliding rings

Elastomers: NBR, EPDM, Viton, PTFE, Kalrez

PLP Sanitary Lobe Pump VARIATIONS

 

Safety Relief Valve

The PLP Sanitary Lobe Pumps can be fitted with either Spring-Loaded or Air Operated Safety Relief Valves. The opening pressures of which are adjustable by means of a set screw. The valve is mounted directly to the pump cover to facilitate easy maintenance and to guarantee optimal hygienic conditions. When the valve is opened a by-pass is created between the pressure and suction sides of the pump. When the differential pressure within the pump head exceeds the pre-set value on the valve, the valve will open and protect the pump from the dead heading.

Below is a table detailing the models of pumps which can be fitted with either type:

Safety Relief Valve Type PLP 1-¾

PLP 1-1

PLP 1-1.5

PLP 1.5-2

 

PLP 2-1.5

PLP 2-2

PLP 2-2.5

PLP 3-2

PLP 3-3

PLP 3-4

PLP 4-4
Spring Loaded X X X X  
Air Operated         X

PLP Sanitary Lobe Pump VARIATIONS2

 

Heating / Cooling Jackets

PLP Sanitary Lobe Pump VARIATIONS3

PLP Sanitary Lobe Pumps can be fitted with Heating / Cooling Jackets to maintain fluid temperatures which are optimal to the pump performance and system requirements.

These are supplied in the following variants:

  1. H1 = Heating Jacket on the Front Cover
  2. H2 = Heating Jacket on the Rotor Case
  3. H3 = H1 + H2
  4. H4 = Electrical Heating Cover

 

Spare Parts

Depending on what sizes of PLP Sanitary Lobe Pumps you have on site, some models have common spares, detailed in the following tables, which can vastly reduce the number of different spares that are required on site.

PLP Sanitary Lobe Pump spare

Item No Description Material
3 Front Cover AISI 316 L
5 Rotor Retainer AISI 316 L
15 Bearing Cartridge Cast Steel
17 Right Hand Gear Hardened Steel 1.6582
29 Left Hand Gear Tempered Steel 1.7225
23 Drive Shaft Duplex Stainless Steel 1.4462
30 Lay Shaft
34 Rotor Case AISI 316 L
35 Rotor AISI 316 L

 

PLP 1 Parts List

Item No Qty Description Part Number
PLP 1-¾ PLP 1-1 PLP 1-1.5
1 4 Cap Nut 051.022-08-000-5
2 4 Stud 051.073-08-020-5
3 1 Pump Cover 700.117-000
4 1 O-Ring 051.741-100034
5 2 Rotor Retainer 700.118-000 700.118-002
6 2 O-Ring 051.741-100000
7 ** Shaft Seal **
8 2 Seal Cover 700.150-007
9 8 Allen Screw 051.000-04-012-5
10 2 Oil Retaining Ring 051.763-012
11 1 Gasket Gearbox Cover 700.161-000-A
12 4 Shim 700.160-000-A
13 2 Cone Bearing 051.658-028-007
14 8 Allen Screw 051.000-06-025-5
15 2 Bearing Cartridge 700.115-000-B
16 2 Cone Bearing 051.658-022-008
17 1 Right Hand Gear 700.120-000-B
18 2 Key 051.607-06-015-10
19 2 Tab Washer 051.670-020-000
20 2 Lock Nut 051.669-020-000
21 1 Oil Retaining Ring 051.763-013
22 1 Key 051.607-05-025-00
23 1 Drive Shaft 700.113-002 700.113-000-C 700.113-001
24 1 Oil Sight Glass 054.210-012
25 1 Oil Fill Plug with Breather 054.211-010
26 2 Cylindrical Pin 051.074-050-010-6
27 2 Plug 054.108-031-3
28 1 Gearbox Cover 700.116-000
29 1 Left Hand Gear 700.121-000-B
30 1 Lay Shaft 700.114-002 700.114-000-C 700.114-001
31 4 Allen Screw 051.000-06-040-5
32 2 Foot 700.132-000
33 4 Allen Screw 051.000-08-020-5
34 1 Rotor Casing 700.110.007 700.110.005 700.110.012
35 2 Rotor 700.111-007 700.111-000 700.111-006

 

 

PLP 1.5 Parts List

Item No Qty Description Part Number
PLP 1.5-2
1 4 Cap Nut 051.022-10-000-5
2 4 Stud P-000-001-527
3 1 Pump Cover 700.517-000
4 1 O-Ring P-000-001-524
5 2 Rotor Retainer 700.118-000
6 2 O-Ring 051.741-100000
7 ** Shaft Seal **
8 2 Seal Cover 700.150-007
9 8 Allen Screw 051.000-04-012-5
10 2 Oil Retaining Ring P-000-001-523
11 1 Gasket Gearbox Cover 700.561-000
12 4 Shim 700.560-xxx
13 2 Cone Bearing P-000-001-502
14 8 Allen Screw 051.000-08-035-5
15 2 Bearing Cartridge 700.515-000
16 2 Cone Bearing P-000-001-503
17 1 Right Hand Gear 700.520-000
18 2 Key
19 2 Tab Washer P-000-001-526
20 2 Lock Nut P-000-001-525
21 1 Oil Retaining Ring P-000-001-522
22 1 Key 051.607-06-040-02
23 1 Drive Shaft 700.513-000
24 1 Oil Sight Glass 054.210-012
25 1 Oil Fill Plug with Breather 054.211-011
26 2 Cylindrical Pin 051.074-050-010-6
27 2 Plug 054.108-031-3
28 1 Gearbox Cover 700.516-000
29 1 Left Hand Gear 700.521-000
30 1 Lay Shaft 700.514-000
31 4 Allen Screw 051.000-06-040-5
32 2 Foot 700.132-0004
33 4 Allen Screw 051.000-10-025-5
34 1 Rotor Casing 700.510-000
35 2 Rotor 700.511-000

 

PLP 2 Parts List

Item No Qty Description Part Number
PLP 2-1.5 PLP 2-2 PLP 2-2.5
1 4 Cap Nut 051.022-12-000-5
2 4 Stud 051.073-12-030-5
3 1 Pump Cover 700.217-000
4 1 O-Ring 051.741-100041
5 2 Rotor Retainer 700.218-000 700.218-001
6 2 O-Ring 051.741-100006
7 ** Shaft Seal **
8 2 Seal Cover 700.250-007
9 8 Allen Screw 051.000-05-012-5
10 2 Oil Retaining Ring 051.763-019
11 1 Gasket Gearbox Cover 700.261-000-A
12 4 Shim 700.260-000-A
13 2 Cone Bearing 051.658-045-010
14 8 Allen Screw 051.000-10-045-5
15 2 Bearing Cartridge 700.215-000
16 2 Cone Bearing 051.658-035-009
17 1 Right Hand Gear 700.220-000
18 2 Key 051.607-10-027-10
19 2 Tab Washer 051.670-030-000
20 2 Lock Nut 051.669-030-000
21 1 Oil Retaining Ring 051.763-018
22 1 Key 051.607-08-040-00
23 1 Drive Shaft 700.213-001 700.213-000
24 1 Oil Sight Glass 054.210-012
25 1 Oil Fill Plug with Breather 054.211-011
26 2 Cylindrical Pin 051.074-060-010-6
27 2 Plug 054.108-032-3
28 1 Gearbox Cover 700.216-000
29 1 Left Hand Gear 700.221-000
30 1 Lay Shaft 700.214-001 700.214-000
31 4 Allen Screw 051.000-10-055-5
32 2 Foot 700.232-000
33 4 Allen Screw 051.000-10-025-5
34 1 Rotor Casing 700.210-000 700.210-015
35 2 Rotor 700.211-004 700.211-000 700.211-001

 

PLP 3 Parts List

Item No Qty Description Part Number
PLP 3-2 PLP 3-3 PLP 3-4
1 4 Cap Nut 051.022-16-000-5
2 4 Stud 051.073-16-045-5
3 1 Pump Cover 700.317-000
4 1 O-Ring 051.741-100042
5 2 Rotor Retainer 700.318-000-E 700.318-001-A
6 2 O-Ring 051.741-100067
7 ** Shaft Seal **
8 2 Seal Cover 700.350-007
9 12 Allen Screw 051.000-06-012-5
10 2 Oil Retaining Ring 051.763-025
11 1 Gasket Gearbox Cover 700.361-000
12 4 Shim 700.360-000
13 2 Cone Bearing 051.658-060-012
14 8 Allen Screw 051.000-12-060-5
15 2 Bearing Cartridge 700.315-000
16 2 Cone Bearing 051.658-050-011
17 1 Right Hand Gear 700.320-000
18 2 Key 051.607-14-043-10
19 2 Tab Washer 051.670-045-000
20 2 Lock Nut 051.669-045-000
21 1 Oil Retaining Ring 051.763-024
22 1 Key 051.607-12-060-00
23 1 Drive Shaft 700.313-001 700.313-000
24 1 Oil Sight Glass 054.210-012
25 1 Oil Fill Plug with Breather 054.211-011
26 2 Cylindrical Pin 051.074-080-012-6
27 2 Plug 054.108-032-3
28 1 Gearbox Cover 700.316-000
29 1 Left Hand Gear 700.321-000
30 1 Lay Shaft 700.314-001 700.314-000
31 4 Allen Screw 051.000-12-080-5
32 2 Foot 700.332-000
33 4 Allen Screw 051.000-12-030-5
34 1 Rotor Casing 700.310-014 700.310-000 700.310-015
35 2 Rotor 700.311-004-A 700.311-000-E 700.311-001-D

 

PLP 4 Parts List

Item No Qty Description Part Number
PLP 1.5-2
1 8 Cap Nut 051.022-16-000-5
2 8 Stud 051.073-16-050-5
3 1 Pump Cover 700.417-000
4 1 O-Ring 051-741-100043
5 2 Rotor Retainer 700.418-000
6 2 O-Ring 051.741-100023
7 ** Shaft Seal **
8 2 Seal Cover 700.450-007
9 12 Allen Screw 051.000-08-020-5
10 2 Oil Retaining Ring 051.763-031
11 1 Gasket Gearbox Cover 700.461-000
12 4 Shim 700.460-000
13 2 Cone Bearing 051.658-085-014
14 8 Allen Screw 051.000-16-070-5
15 2 Bearing Cartridge 700.415-000
16 2 Cone Bearing 051.658-070-013
17 1 Right Hand Gear 700.420-000
18 2 Key 051.607-20-055-10
19 2 Tab Washer 051.670-065-000
20 2 Lock Nut 051.669-065-000
21 1 Oil Retaining Ring 051.763-030
22 1 Key 051.607-16-090-00
23 1 Drive Shaft 700.413-000
24 1 Oil Sight Glass 054.210-012
25 1 Oil Fill Plug with Breather 054.211.011
26 2 Cylindrical Pin 051.074-080-018-6
27 2 Plug 054.108-032-3
28 1 Gearbox Cover 700.416-000
29 1 Left Hand Gear 700.421-000
30 1 Lay Shaft 700.414-000
31 6 Allen Screw 051.000-16-100-5
32 2 Foot 700.432-000
33 4 Allen Screw 051.000-16-030-5
34 1 Rotor Casing 700.410-000
35 2 Rotor 700.411-000

 

Additional information

Pump Sizes

PLP 1-¾, PLP 1-1, PLP 1-1.5, PLP 1.5-2, PLP 2-1.5, PLP 2-2, PLP 2-2.5, PLP 3-2, PLP 3-3, PLP 3-4, PLP 4-4

Connection Size

, , , , , ,

Drive Type

,

Flow Rate

, , , , , , , , ,

Pressure

,

Material

Self Priming

Solids Handling

, , , ,

Viscosity

,

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