Vacuum Gauge -1/0 Bar | 1/4 in NPT Back
Aftermarket Vacuum Gauge -1/0 Bar | 1/4 in NPT Back Aftermarket Vacuum Gauge -1/0 Bar | 1/4 in NPT Back is a liquid-filled industrial vacuum gauge selected as an aftermarket rear-connection option for verified dry-cleaning still and distillation vacuum-gauge service. This listing is intended for customers whose installed gauge matches the FMB / Firbimatic 0804011 style vacuum range but uses a center-back / rear connection instead of a lower bottom connection.
Aftermarket Vacuum Gauge -1/0 Bar | 1/4 in NPT Back
Aftermarket Vacuum Gauge -1/0 Bar | 1/4 in NPT Back is a liquid-filled industrial vacuum gauge selected as an aftermarket rear-connection option for verified dry-cleaning still and distillation vacuum-gauge service.
This listing is intended for customers whose installed gauge matches the FMB / Firbimatic 0804011 style vacuum range but uses a center-back / rear connection instead of a lower bottom connection. It is not an OEM FMB, Firbimatic, Union, Realstar, or Sovrana part. It should be ordered only after confirming the installed gauge range, connection size, thread type, connection location, dial clearance, and machine/service-manual path.
Technical Specifications
Component type: industrial vacuum gauge / rear-connection replacement option
Gauge range: 30 in Hg to 0
Secondary range: -1 to 0 bar
Connection size: 1/4 in
Connection type: NPT
Connection gender: male
Connection location: center back / rear
Nominal dial size: 2 1/2 in
Case diameter reference: about 2.65 in
Case depth reference: about 1.21 in
Case material: stainless steel
Lens material: polycarbonate
Socket / sensor / wetted material: copper alloy / copper
Fill liquid: glycerin / liquid-filled case
Vibration resistance: liquid-filled
Accuracy: +/-2-1-2%
Accuracy grade: ASME B40.100 Grade A
Scale type: dual scale
Includes: vent plug
Calibration certificate: not included
Oxygen service: not cleaned for oxygen service
Hazardous-location rating: not rated
Operating temperature reference: ambient -30 F to 180 F; process media 30 F to 160 F
Aftermarket Replacement Notes
This is an aftermarket industrial replacement option selected for cases where the installed gauge uses a center-back/rear connection. It should not replace a bottom-connection gauge unless the machine plumbing and panel layout are intentionally being adapted by a qualified technician after verifying clearance, fittings, and service requirements.
The liquid-filled/glycerin construction can help damp pointer movement in equipment areas where vibration or pulsation is present. The stainless case and polycarbonate lens make it a practical service replacement when the installed component specifications match.
This is not an OEM Firbimatic/FMB gauge and should not be treated as a universal replacement. Rear-connection gauges are more sensitive to panel depth, fitting clearance, and line alignment, so customers should confirm the rear thread location and available space before ordering.
Part Numbers & Cross References
Corbett Equipment
CE-GAU-VAC-254A-BACK
Compare Against
FMB / Firbimatic 0804011 rear/center-back option
Omnia / F60K gauge-plate reference lane: Tavola RC1271_A
Aftermarket replacement option only where the installed component and service requirements support this gauge configuration
Related Parts To Verify Separately
Bottom/lower connection gauges should be ordered when the installed gauge uses a lower connection.
0804009 / A15572 is a separate vacuum/pressure manometer lane with positive pressure range and should not be replaced with this vacuum-only gauge.
Pressure-only gauges should not be used where vacuum indication is required.
Machine Fitment
Master Manufacturer / Model Lineage
Use this aftermarket gauge only as a verified replacement candidate for machines whose installed gauge matches the source gauge lane, connection location, range, and service requirements. Corbett Equipment treats FMB / Firbimatic as the master builder lineage, with Union, Realstar, and other sister/derivative families researched from model-lineage evidence and verified against the installed component.
FMB / Firbimatic Machine Models And Master Families
Potential reference families include Omnia / F60K, EcoGreen, EcoGreen SM / AM-prefix machines, EcoPro / ECOPRO, Saver, EcoLine, F-series machines, 9 Series KWL / PERC, Vortex, Axial, Petite, Nevada, Hydro-Vac, Hydro-Chill, Tri-Flow, Smart-10, SecureLock, and recovered numeric FMB / Firbimatic model families where the installed gauge range, connection, mounting, and service-manual path confirm this gauge lane.
Union Machine Models And Derivative Families
Union derivative references may include HXP8018C, L840, P840, HL / HP / HXL families, HL-780, HL-840, HL-850, HL-860, HL-880, HL-890, L740S, L740, HL740, L750, RS-102, RS-122, and RS-152 where the installed gauge and service documentation confirm the same range and connection requirements.
Realstar Machine Models And Derivative Families
Realstar derivative references may include KM / KT and RKM families such as KM315, KM343, KM403, KM503, KM703, KM803, KT215, KT343, KT403, KT503, RKM36, RKM340, and RKM400 where the installed gauge and service documentation confirm the same range and connection requirements.
Sovrana And Other Derivative References
Treat Sovrana and other derivative references as verification-required lanes unless the installed machine data plate, manual, or removed gauge confirms the exact gauge range, connection size, and connection location.
Manual / Gauge-Plate Source Reference
Omnia / F60K Tavola RC1271_A shows the OEM gauge family used for comparison and verification.
Ordering Verification
Before ordering, compare the installed gauge to this listing:
gauge range and units
vacuum-only versus compound vacuum/pressure function
1/4 in NPT male thread
center-back/rear connection location
dial diameter, panel depth, and rear fitting clearance
service temperature and process media
machine model and data plate
service manual or exploded-view reference
photos of the removed or installed gauge
Warnings & Restrictions
Not an OEM Firbimatic/FMB part.
Not cleaned for oxygen service.
Not hazardous-location rated.
Calibration certificate not included.
Prop 65 warning should be reviewed against final product evidence when the purchasing path or manufacturer data changes.