POLY-AT Discharge gear pumps

Increased efficiency for your polymer process.

High efficient discharge gear pumps

The POLY-AT design offers exceptional flexibility when it comes to installations beneath the polymer melting reactor. Customers can choose from three different flange geometries to ensure they are always benefiting from the best combination of reactors and pump flanges from both a technical and economical perspective.

The new gear geometries facilitate differential pressures of up to 320 bar for selected pump sizes. What’s more, the new design is rounded out with the usual variety of different material combinations. The most common of these combinations has to be a stainless-steel or carbon-steel housing with tool steel or aluminium-bronze friction bearings.

Maximum flexibility

SX version:

• Flange geometry integrated in the housing
• Minimal installation space

MX version:

• Blind holes in flange
• Largest possible cross section
• Minimal pressure loss
• Ideally suited for highly viscous polymers

LX version:

• Flange with through holes
• Maximum flexibility for the installation
• Very low pressure loss

Sizes POLY-AT/BOOSTER-AT

611-100-100
3500 kg/h
764-100-125
4500 kg/h
977-100-160
5700 kg/h

1210-125-125
5500 kg/h
1550-125-160
7100 kg/h
1930-125-200
8900 kg/h

2460-160-160
8700 kg/h
3080-160-200
11000 kg/h
3850-160-250
13700 kg/h

4890-200-200
14000 kg/h
6110-200-250
17400 kg/h
7820-200-320
22300 kg/h

6860-224-224
17000 kg/h
8570-224-280
21500 kg/h
11000-224-360
27600 kg/h

9550-250-250
21200 kg/h
12200-250-320
27100 kg/h
15300-250-400
34100 kg/h

13400-280-280
27000 kg/h
17200-280-360
34700 kg/h
21500-280-450
43500 kg/h

Request for a polymer discharge pump [POLY] quotation

Please fill out the following form so we can create an offer that is exactly customized to your needs. One of our sales engineers will examine your request and contact you to discuss your application in detail.

Request a quote

Features

  • Housing version
  • Sealing technology
  • Flange versions
  • Pressure sensor
  • Temperature sensors

  • 3 housing versions for different pressure level

    The housings are available for a wide variety of applications in 3 different pressure levels.

    Possible are:

    • 200 bar
    • 250 bar
    • 320 bar

  • Viscoseal

    The POLY can be equipped with different sealing variants.

    Possible are:

    •      Threaded shaft seal with double buffered stuffing box
    •      Stuffing box


    optional:

    •      Heated stuffing box
    •      Threaded shaft seal coolable
    •      Double mechanical seal

  • Flanschversionen

    The POLY-AT design offers exceptional flexibility when it comes to installations beneath the polymer melting reactor.

    SX-Version

    • Flange geometry integrated in the housing
    • Minimal installation space

    MX-Version

    • Blind holes in flange
    • Largest possible cross section
    • Minimal pressure loss
    • Ideally suited for highly viscous polymers

    LX-Version

    • Flange with through holes
    • Maximum flexibility for the installation
    • Very low pressure loss

  • Pressure sensor

    To monitor the input and output pressure, pressure sensors can be installed on the pump. You can check whether the pressure is within the tolerance range.

  • Temperature sensors

    The temperature can be measured at 6 different locations.

High efficient discharge gear pumps in AT design

Housing

Pressure versions
200, 250, 320
Flange versions
SX, MX, LX

Features

Sealings
Viscoseal cooled /uncooled, stuffing box heated/unheated
Temperature monitoring
Bearings and Housing
Pressure monitoring
Suction and differential

Flanges

Flange versions
EN 1092-1 or ANSI B16.5

Applications

Medium/Fluids
PP, PET, ABS, PA, EPS, Elastomere, PC

Advantages:

  • Lower bearing temperature, leading to lower stress on the polymer
  • Optimised inlet geometry, leading to minimal pressure loss
  • Minimal dwell times of the polymer in the reactor
  • Three different flange types each (EN 1092-1 or ANSI B16.5)
  • Three different pressure versions (200 bar, 250 bar, 320 bar)
  • Larger viscosity range
  • Simplified handling thanks to lower weight
  • Increased throughput of up to 40% without changing the installation size
  • Lower shear
  • Improved product quality
  • Reduced heat input
  • Simplified spare part management thanks to the use of identical components for all series

POLY vs. POLY-AT

The POLY-AT series (on the right) offers a much larger suction flange compared to the classic design. As a result, the dwell time of the polymer is reduced and the throughput at the same installation dimension can be significantly increased.

POLY pumps in classic design can easily be replaced with a POLY-AT with the previous smaller installation size but with the same throughput.