HR Blowers Manufactured in Huddersfield UK
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Roots RAM Blowers

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HR Blowers supply Howden RAM rotary blowers which are heavy duty units designed with integral-shaft ductile iron impellers having an involute profile. This product line is designed with detachable rugged steel mounting feet which offers custom installation for either vertical or horizontal installation. Additionally, certain lines we supply incorporate ROOTS WHISPAIR technology that reduces both noise and power loss.

Need help sizing your blower? The HR Blower engineering team are here to assist. Contact us today.
Need to know more about the Dresser RAM blowers we offer?
Contact HR Blowers, your worldwide Howden RAM blower specialist supplier today.

Howden Dresser RAM-J Blowers

 RAM-J Blowers

Incorporates Roots WHISPAIR technology to reduce noise levels.

  • Pressure to 18 psig (1240 mbar).
  • Vacuum to 16” Hg (539 mbar).
  • Flows to 3550 cfm (6030 m3/hr).
  • Range of Roots RAM J blower frame sizes available.

Howden Dresser RAM X Tri-Lobe Blower

RAM-X Tri-lobe Blower

These blowers have a Roots WHISPAIR discharge design which when combined with tri-lobe impellers, delivers quieter operation than conventional tri-lobe blowers.

  • Flows to 5900 cfm (10030 m3/hr).
  • Vacuum to 16” Hg (539 mbar).
  • Pressures to 15 psig (1034 mbar).
  • Range of Roots RAM X blower frame sizes available.

Howden Dresser RAM-VJ Blower

RAM-VJ Blower

RAM WHISPAIR units are available with an inlet spray nozzle and seal water flow meter for water injection. This feature cools the vacuum unit to enable it to reach deeper vacuum.

  • Vacuum to 24” Hg (813 mbar).
  • Flows to 2500 cfm (4250 m3/hr).
  • Range of Roots RAM VJ blower frame sizes available.

Howden Dresser RAM-GJ Blowers

Standard gas blowers suitable for both vacuum and pressure service. Features a piston ring system between the compression & vent cavities.

  • Long life mechanical seals.
  • Range of Roots RAM GJ blower frame sizes available.

Why choose HR Blowers UK for all your Howden Roots RAM type blower needs?

  • Existing stock levels across a range of products.
  • Quick delivery turnaround for both UK and overseas orders.
  • Warranty with each blower ordered.
  • Contact our technical experts for more information.

Looking for RAM blower parts? HR Blowers can supply a range of RAM blower parts and accessories to help keep your machine operating. We also service and repair ROOTS RAM type blowers

Contact our friendly team today
Specifications and sizesData sheets

Howden RAM Series

US or Imperial

Metric

Howden RAM Model

BOM # or Part Number

UK Order Number

Avail Configs

Frame Size

Inlet/Disc Conn

Shaft Dia.

Bare Weight

Inlet/Disc Conn

Shaft Dia.

Bare Weight KG

RAM 404

82198202

82198202

BL-BR

404

3T

1.500″

200

N/A

N/A

N/A

RAM 404

82147020

82147020

LB-LT-RB-RT-TL-TR

404

3T

1.500″

200

N/A

N/A

N/A

RAM 406

82148020

82148020

LB-LT-RB-RT-TL-TR

406

4T

1.500″

230

N/A

N/A

N/A

RAM 406

82199020

82199020

BL-BR

406

4T

1.500″

230

N/A

N/A

N/A

RAM 409

82200020

82200020

BL-BR

409

4T

1.500″

270

N/A

N/A

N/A

RAM 409

82149020

82149020

LB-LT-RB-RT-TL-TR

409

4T

1.500″

270

N/A

N/A

N/A

RAM 412

82150020

82150020

LB-LT-RB-RT-TB-TL-TR

412

6F/5F

1.500″

330

N/A

N/A

N/A

RAM 412

82401020

82401020

BL-BR

412

6F/5F

1.500″

330

N/A

N/A

N/A

RAM 418

82402020

82402020

BL-BR

418

8F

1.500″

410

N/A

N/A

N/A

RAM 418

82151020

82151020

LB-LT-RB-RT-TL-TR

418

8F

1.500″

410

N/A

N/A

N/A

RAM 616

85154020

85154020

BL-BR

616

8F

2.00″

660

N/A

N/A

N/A

RAM 616

85147020

85147020

BB-LB-LT-RB-RT-TL-TR

616

8F

2.00″

660

N/A

N/A

N/A

RAM 624

85155020

85155020

BL-BR

624

10F

2.00″

765

N/A

N/A

N/A

RAM 624

85148020

85148020

LB-LT-RB-RT-TL-TR

624

10F

2.00″

765

N/A

N/A

N/A

Howden RAM J Series

US or Imperial

Metric

Howden RAM J Model

BOM # or Part Number

UK Order Number

Avail Configs

Frame Size

Inlet/Disc Conn

Shaft Dia.

Bare Weight

Inlet/Disc Conn

Shaft Dia.

Bare Weight KG

RAM J 404

81979020

81979020

LB-LT-RB-RT-TL-TR

404

3T

1.500″

270

N/A

N/A

N/A

RAM J 406

82194020

82194020

BL-BR

406

4T

1.500″

300

N/A

N/A

N/A

RAM J 406

81978020

81978020

LB-LT-RB-RT-TL-TR

406

4T

1.500″

300

N/A

N/A

N/A

RAM J 409

81977020

81977020

LB-LT-RB-RT-TL-TR

409

5T

1.500″

350

N/A

N/A

N/A

RAM J 409

82195020

82195020

BL-BR

409

5T

1.500″

350

N/A

N/A

N/A

RAM J 412

81976020

81976020

LB-LT-RB-RT-TL-TR

412

6F/5F

1.500″

400

N/A

N/A

N/A

RAM J 412

82196020

82196020

BL-BR

412

6F/5F

1.500″

400

N/A

N/A

N/A

RAM J 418

81975020

81975020

LB-LT-RB-RT-TL-TR

418

8F/6F

1.500″

500

N/A

N/A

N/A

RAM J 418

82197020

82197020

BL-BR

418

8F/6F

1.500″

500

N/A

N/A

N/A

RAM J 616

85145020

85145020

LB-LT-RB-RT-TL-TR

616

8F/6F

2.00″

705

N/A

N/A

N/A

RAM J 616

85152020

85152020

BL-BR

616

8F/6F

2.00″

705

N/A

N/A

N/A

RAM J 624

85146020

85146020

LB-LT-RB-RT-TL-TR

624

10F/8F

2.00″

910

N/A

N/A

N/A

RAM J 624

85153020

85153020

BL-BR

624

10F/8F

2.00″

910

N/A

N/A

N/A
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