Dresser Roots Industrial Air Blowers | ...
Dresser Roots - Industrial Air Blowers | WHISPAIR
Roots RAS-J air blowers and RGS-J gas blowers, available from Hurll Nu-Way, equalise pressure pulses – reducing shock wave intensity by up to 40%.
This means:
Longer bearing life
Less shock transmitted through the impellers means approximately 20% longer bearing life. Other components such as timing gears, drive couplings, v-belts and motor bearings suffer less stress, too.
Lower energy consumption
The patented ROOTS WHISPAIR’s jet design precisely meters backflow and channels air pressure in the direction of impeller rotation. The result is an extra “push” that reduces the power required to drive the impellers.
Lower noise
Pressure pulses are also the major source of blower and gas blower noise. The pressure equalising effect of the Whispair™ design reduces noise by approximately 5 dBA, while reducing wear on your piping valves and sensitive instrumentation.
Testing
Every Roots blower is mechanically tested to design extremes of speed, pressure and temperature. Roots validate the flow capacity as well as major critical factors such as vibration, oil circulation and operating clearances. This ensures your blower is manufactured to the highest standards with performance proven to meet your process needs. Special testing requirements are welcome.
Cylinder and headplates
All units are configurable to horizontal or vertical flows. Cylinders and head-plates are precision machined grey iron, with cast ribs for improved strength and heat transfer. All RAS-J and RGS-J blowers incorporate a wrap-around plenum design and feature ROOTS’ exclusive WHISPAIR™ jet. Castings may be subjected to strenuous pressure and leak testing to ensure integrity in the most demanding applications.
To contact Hurll Nu-Way about Dresser Roots Industrial Air Blowers | WHISPAIR use Get a quote.
This means:
Longer bearing life
Less shock transmitted through the impellers means approximately 20% longer bearing life. Other components such as timing gears, drive couplings, v-belts and motor bearings suffer less stress, too.
Lower energy consumption
The patented ROOTS WHISPAIR’s jet design precisely meters backflow and channels air pressure in the direction of impeller rotation. The result is an extra “push” that reduces the power required to drive the impellers.
Lower noise
Pressure pulses are also the major source of blower and gas blower noise. The pressure equalising effect of the Whispair™ design reduces noise by approximately 5 dBA, while reducing wear on your piping valves and sensitive instrumentation.
Testing
Every Roots blower is mechanically tested to design extremes of speed, pressure and temperature. Roots validate the flow capacity as well as major critical factors such as vibration, oil circulation and operating clearances. This ensures your blower is manufactured to the highest standards with performance proven to meet your process needs. Special testing requirements are welcome.
Cylinder and headplates
All units are configurable to horizontal or vertical flows. Cylinders and head-plates are precision machined grey iron, with cast ribs for improved strength and heat transfer. All RAS-J and RGS-J blowers incorporate a wrap-around plenum design and feature ROOTS’ exclusive WHISPAIR™ jet. Castings may be subjected to strenuous pressure and leak testing to ensure integrity in the most demanding applications.
To contact Hurll Nu-Way about Dresser Roots Industrial Air Blowers | WHISPAIR use Get a quote.
Dresser Roots RAS-J air blowers and RGS-J gas blowers move air or gas through industrial process systems. The patented WHISPAIR jet meters backflow and directs pressure in the impellers’ rotation direction, reducing the power needed to drive them. For process applications, buyers can specify either horizontal or vertical flow configurations to suit their process requirements.
- Pressure equalisation lowers shock-wave intensity by up to 40%
- Reduced impeller shock transmission supports approximately 20% longer bearing life
- WHISPAIR reduces blower noise by approximately 5 dBA
- Each blower is mechanically tested at design extremes of speed, pressure and temperature
- Grey iron cylinders and headplates have cast ribs for strength and heat transfer
Source: listing by Hurll Nu-Way on IndustrySearch · Updated 5 Nov 2026
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Written by AI from the listing by Hurll Nu-Way on IndustrySearch. It is meant to use only what that listing says, but it can still get details wrong, so check them with the supplier before you buy.
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- Bhutan
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- Gambia
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- Germany
- Ghana
- Greece
- Grenada
- Guatemala
- Guinea
- Guinea-Bissau
- Guyana
- Haiti
- Holy See
- Honduras
- Hungary
- Iceland
- India
- Indonesia
- Iran
- Iraq
- Ireland
- Israel
- Italy
- Jamaica
- Japan
- Jordan
- Kazakhstan
- Kenya
- Kiribati
- Korea, North
- Korea, South
- Kosovo
- Kuwait
- Kyrgyzstan
- Laos
- Latvia
- Lebanon
- Lesotho
- Liberia
- Libya
- Liechtenstein
- Lithuania
- Luxembourg
- Macedonia
- Madagascar
- Malawi
- Malaysia
- Maldives
- Mali
- Malta
- Marshall Islands
- Mauritania
- Mauritius
- Mexico
- Federated States of Micronesia
- Moldova
- Monaco
- Mongolia
- Montenegro
- Morocco
- Mozambique
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- Panama
- Papua New Guinea
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- Saint Vincent and the Grenadines
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- Sierra Leone
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- Solomon Islands
- Somalia
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- South Sudan
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- Sri Lanka
- Sudan
- Suriname
- Swaziland
- Sweden
- Switzerland
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- Tajikistan
- Tanzania
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- Timor-Leste
- Togo
- Tonga
- Trinidad and Tobago
- Tunisia
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- Turkmenistan
- Tuvalu
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