Aftermarket Compound Gauge -1/+10 Bar | 1/4 in NPT Bottom
Aftermarket Compound Gauge -1/+10 Bar | 1/4 in NPT Bottom is a liquid-filled industrial compound gauge selected as an aftermarket replacement option for verified dry-cleaning still and distillation gauge service where the installed component requires both vacuum and positive pressure indication.
This listing is intended for customers comparing the installed gauge to the FMB / Firbimatic 0804009 / old A15572 vacuum manometer lane. 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 compound vacuum/pressure gauge replacement option
Primary range: 30 in Hg vacuum to 0 to 150 psi
Secondary range: 0 to 10 bar
Connection size: 1/4 in
Connection type: NPT
Connection gender: male
Connection location: bottom / lower
Nominal dial size: 4 in
Case diameter reference: about 4.29 in
Case depth reference: about 1.75 in
Overall length reference: about 5.21 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: +/-1.0%
Accuracy grade: ASME B40.100 Grade 1A
Scale type: dual scale
Includes: vent plug
Calibration certificate: not included
Oxygen service: not cleaned for oxygen service
Hazardous-location rating: not rated
Operating / process media temperature reference: 30 F to 160 F
Aftermarket Replacement Notes
This is an aftermarket industrial replacement option selected because it preserves the important compound-gauge behavior needed for the 0804009 style lane: vacuum indication plus positive pressure indication. The 0 to 10 bar secondary scale provides a stronger match to the OEM -1/+9 bar source-plate requirement than lower-range compound gauges.
The liquid-filled/glycerin construction can help damp pointer movement in equipment areas where vibration or pulsation is present. The stainless case, polycarbonate lens, 1/4 in NPT male bottom connection, and 1.0% accuracy make it a strong replacement candidate when the installed component specifications match.
This is not an OEM Firbimatic/FMB gauge and should not be treated as a universal replacement. The 4 in dial is larger than many compact gauges; confirm physical clearance, panel/opening fit, plumbing access, and gauge readability before ordering.
Part Numbers & Cross References
Corbett Equipment
CE-GAU-COMP-404CF
Compare Against
FMB / Firbimatic 0804009 / A15572
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
0804011 is a separate vacuum-only lane and should not be used where positive pressure indication is required.
Vacuum-only gauges should not be used where the installed gauge requires a compound vacuum/pressure scale.
Pressure-only gauges should not be used where vacuum indication is required.
Lower-range compound gauges should not be substituted for this lane unless the machine's actual operating range confirms they are sufficient.
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:
compound vacuum/pressure range and units
positive pressure requirement near the +9 bar lane
1/4 in NPT male thread
bottom/lower connection location
4 in dial clearance and mounting space
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.