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Equipment coverage/Roots VJ 821J

Data coverage & sources

The stored record for Roots VJ 821J: specifications, configurations, documents, sources, and gaps.

50 Hz60 HzModel and comparison options

One model, connected records

Roots → Roots VJ Whispair exhauster performance data → VJ 821J

Manufacturer model: VJ 821J · OEM article / order number: Not collected · Equipment type: blower

Technology: Blowers

Related applications: Aeration, Pneumatic Conveying, Pressure Conveying
Related industries: Mining, Pulp + Paper, Water + Wastewater

These are technology associations. Check the operating point and process requirements to establish suitability for this model.

Compare coverage across this family

Specifications and evidence

29 stored observations · 29 pass the source policy at 60 Hz. Individual ratings do not establish flow at a requested pressure.

The collection checklist follows the equipment type. Additional attributes are retained. “Not collected” means the database has no observation for that field.

Blower flow · Not collected · 0 observations / 0 sources

No stored observation. A family brochure or a separate maximum rating does not fill this field.

Max. pressure · Not collected · 0 observations / 0 sources

No stored observation. A family brochure or a separate maximum rating does not fill this field.

Max. vacuum · Not collected · 0 observations / 0 sources

No stored observation. A family brochure or a separate maximum rating does not fill this field.

Motor power · Not collected · 0 observations / 0 sources

No stored observation. A family brochure or a separate maximum rating does not fill this field.

Speed · Not collected · 0 observations / 0 sources

No stored observation. A family brochure or a separate maximum rating does not fill this field.

Noise level · Not collected · 0 observations / 0 sources

No stored observation. A family brochure or a separate maximum rating does not fill this field.

Weight · Sourced · 1 observations / 1 sources
As publishedNormalizedConfiguration / scopeSource / status
1800 lbs816.4656 kgFrequency not stated · model
as printed: "Approx. net Wgt (lbs.)"
unspecified		Source · OEM_SOURCE
12.0 FLG 10.0 FLG 12.75 4.00 1800
Retrieved 2026-10-20
Dimensions · Not collected · 0 observations / 0 sources

No stored observation. A family brochure or a separate maximum rating does not fill this field.

Inlet connection · Not collected · 0 observations / 0 sources

No stored observation. A family brochure or a separate maximum rating does not fill this field.

Outlet connection · Not collected · 0 observations / 0 sources

No stored observation. A family brochure or a separate maximum rating does not fill this field.

Reference vacuum · Sourced · 4 observations / 1 sources
As publishedNormalizedConfiguration / scopeSource / status
20 inHg20 inHgFrequency not stated · model
vacuum (gauge); the pressure "Vacuum service inlet flow" is stated at (1800 RPM, 20" Hg vacuum)
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 2532
Retrieved 2026-10-20
16 inHg16 inHgFrequency not stated · model
vacuum (gauge); the pressure "Vacuum service inlet flow" is stated at (1800 RPM, 16" Hg vacuum)
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 2719
Retrieved 2026-10-20
24 inHg24 inHgFrequency not stated · model
vacuum (gauge); the pressure "Vacuum service inlet flow" is stated at (1800 RPM, 24" Hg vacuum)
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 2058
Retrieved 2026-10-20
22 inHg22 inHgFrequency not stated · model
vacuum (gauge); the pressure "Vacuum service inlet flow" is stated at (1800 RPM, 22" Hg vacuum)
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 2355
Retrieved 2026-10-20
Brake power (vacuum service) · Sourced · 12 observations / 1 sources
As publishedNormalizedConfiguration / scopeSource / status
125.2 BHP93.3616 kWFrequency not stated · model
1800 RPM, 16" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service brake horsepower: 125.2
Retrieved 2026-10-04
151.9 BHP113.2718 kWFrequency not stated · model
1800 RPM, 20" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service brake horsepower: 151.9
Retrieved 2026-10-04
165.3 BHP123.2642 kWFrequency not stated · model
1800 RPM, 22" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service brake horsepower: 165.3
Retrieved 2026-10-04
178.6 BHP133.182 kWFrequency not stated · model
1800 RPM, 24" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service brake horsepower: 178.6
Retrieved 2026-10-04
79.3 BHP59.134 kWFrequency not stated · model
1170 RPM, 16" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service brake horsepower: 79.3
Retrieved 2026-10-04
97.5 BHP72.7058 kWFrequency not stated · model
1170 RPM, 20" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service brake horsepower: 97.5
Retrieved 2026-10-04
106.5 BHP79.4171 kWFrequency not stated · model
1170 RPM, 22" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service brake horsepower: 106.5
Retrieved 2026-10-04
115.6 BHP86.2029 kWFrequency not stated · model
1170 RPM, 24" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service brake horsepower: 115.6
Retrieved 2026-10-04
56.8 BHP42.3558 kWFrequency not stated · model
850 RPM, 16" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service brake horsepower: 56.8
Retrieved 2026-10-04
70.2 BHP52.3481 kWFrequency not stated · model
850 RPM, 20" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service brake horsepower: 70.2
Retrieved 2026-10-04
76.8 BHP57.2698 kWFrequency not stated · model
850 RPM, 22" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service brake horsepower: 76.8
Retrieved 2026-10-04
83.5 BHP62.266 kWFrequency not stated · model
850 RPM, 24" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service brake horsepower: 83.5
Retrieved 2026-10-04
Inlet flow (vacuum service) · Sourced · 12 observations / 1 sources
As publishedNormalizedConfiguration / scopeSource / status
2719 CFM4619.608 m3/hFrequency not stated · model
1800 RPM, 16" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 2719
Retrieved 2026-10-04
2532 CFM4301.893 m3/hFrequency not stated · model
1800 RPM, 20" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 2532
Retrieved 2026-10-04
2355 CFM4001.169 m3/hFrequency not stated · model
1800 RPM, 22" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 2355
Retrieved 2026-10-04
2058 CFM3496.563 m3/hFrequency not stated · model
1800 RPM, 24" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 2058
Retrieved 2026-10-04
1662 CFM2823.755 m3/hFrequency not stated · model
1170 RPM, 16" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 1662
Retrieved 2026-10-04
1510 CFM2565.505 m3/hFrequency not stated · model
1170 RPM, 20" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 1510
Retrieved 2026-10-04
1366 CFM2320.848 m3/hFrequency not stated · model
1170 RPM, 22" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 1366
Retrieved 2026-10-04
1124 CFM1909.687 m3/hFrequency not stated · model
1170 RPM, 24" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 1124
Retrieved 2026-10-04
1138 CFM1933.473 m3/hFrequency not stated · model
850 RPM, 16" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 1138
Retrieved 2026-10-04
1008 CFM1712.602 m3/hFrequency not stated · model
850 RPM, 20" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 1008
Retrieved 2026-10-04
885 CFM1503.624 m3/hFrequency not stated · model
850 RPM, 22" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 885
Retrieved 2026-10-04
677 CFM1150.23 m3/hFrequency not stated · model
850 RPM, 24" Hg vacuum
unspecified		Source · OEM_SOURCE
Vacuum service inlet flow: 677
Retrieved 2026-10-04

Operating-performance coverage

Each row keeps its own configuration and relationship. Pending points are stored for review and excluded from shopper comparisons.

No versioned performance dataset has been collected for this model. Stored legacy points: 0; each retains its existing evidence status.

Document coverage

Categories follow recorded document types and linked extracted data. One document can appear in several categories. Family documents remain shared references; extraction does not imply approval.

CategoryModel linksFamily linksPublic sources
Specifications10
Performance curves / test data00Not collected
Operation / service manuals00Not collected
Parts documentation00Not collected
Drawings / dimensions00Not collected
Product / family literature00Not collected
Other / unclassified00Not collected