Visual Differential Pressure Indicators for Aerospace Filters
Custom visual pressure differential indicators for aviation hydraulic oil filters, lubricating oil filters, fuel filter elements, coolant circuits and other aerospace fluid-control systems.
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What This Product Is Used For
A visual differential pressure indicator gives a local visual warning when the pressure drop across a filter or fluid-control component reaches the designed signal point. In aerospace filter systems, it is commonly used as a filter clogging indicator or pressure differential warning device so maintenance personnel can identify filter blockage or abnormal pressure drop during inspection.
MH manufactures these indicators according to customer drawings, samples or working-environment requirements. The product can be reviewed by signal pressure, working pressure, burst pressure, medium, temperature range, reset method, sealing structure, thread interface and installation space.
Local Visual WarningDesigned for maintenance-friendly filter condition indication without relying only on remote signal output. |
Aerospace Filter UseSuitable for hydraulic oil, lubricating oil, fuel, coolant and related aviation filter assemblies. |
Custom Signal PointSignal pressure can be selected according to filter pressure drop and system safety margin. |
Drawing-Based OEMBody, thread, seal, reset and installation structure can be reviewed from drawings or samples. |
Representative Models and Parameters
| Representative model | Typical function | Representative parameters from drawing examples |
| GXHQ(V)5 | High-pressure visual differential pressure indicator | Signal pressure 0.52±0.05 MPa, working pressure 42 MPa, burst pressure 83 MPa, working temperature -40°C to +120°C |
| ZXHQ(V)5 | Medium-pressure visual differential pressure indicator | Signal pressure 0.52±0.05 MPa, working pressure 21 MPa, burst pressure 63 MPa, working temperature -40°C to +120°C |
| ZXHQ(V)2 | Visual differential pressure indicator | Signal pressure 2.05 kg/cm² to 2.48 kg/cm², working pressure 21 MPa, burst pressure 63 MPa, working temperature -40°C to +120°C |
| ZXHQ-V-2FV | Visual differential pressure indicator for coolant / PAO medium | Medium: PAO cooling liquid, signal pressure 0.22±0.022 MPa, working pressure 1.5 MPa, maximum working pressure 21 MPa, working temperature -55°C to +130°C |
| ZXHQ-V-1-B/V | Visual differential pressure indicator | Signal pressure 0.13±0.02 MPa, working pressure 350 PSI / 2.413 MPa, burst pressure 1000 PSI / 6.894 MPa |
| GXHQ(V)7 | Visual differential pressure indicator with manual reset | Medium examples: YH-10 / YH-15 aerospace hydraulic oil, signal pressure 0.7±0.05 MPa, working pressure 35 MPa, burst pressure 42 MPa, working temperature -40°C to +80°C |
| XHQ(V)2-01 | Visual pressure differential signaler | Medium example: lubricating oil 4106, medium temperature -60°C to +120°C, working pressure 0.7 MPa, signal pressure 25 psi / 0.172 MPa |
Why This Product Needs Engineering Review
Visual differential pressure indicators used in aerospace filters must balance signal sensitivity, pressure resistance, sealing reliability and installation space. A small change in working medium, temperature or filter pressure drop can change the required signal point and sealing structure.
| Signal pressure | Must match filter clogging threshold, system pressure margin and maintenance requirement. |
| Medium compatibility | Hydraulic oil, lubricating oil, fuel, coolant and PAO may require different sealing materials and structural review. |
| Temperature range | Low-temperature and high-temperature working conditions affect sealing, reset behavior and indication stability. |
| Interface and installation | Thread, O-ring, flange, wrench space, visibility direction and envelope size must match the filter head or assembly. |
Typical Applications
Aerospace Hydraulic FiltersLocal pressure differential indication for hydraulic filter assemblies and maintenance inspection. |
Lubricating Oil FiltersFilter clogging indication for lubricating oil circuits and high-reliability mechanical systems. |
Fuel, Coolant and PAO SystemsCustom indicators for fuel, coolant and PAO working environments with specific pressure and temperature requirements. |
What To Send For Quotation
Please send a drawing, sample photo, reference model or basic working-condition information. If the product is used as a replacement part, photos of the existing indicator and filter assembly can help engineering review.
| Working medium | Hydraulic oil, lubricating oil, fuel, coolant, PAO or other fluid |
| Pressure data | Signal pressure, working pressure, burst pressure and reset requirement |
| Environment | Operating temperature, vibration condition, installation direction and maintenance visibility |
| Interface | Thread, O-ring, flange, body size, sealing surface and available installation space |
Related Product Category
This product belongs to the broader aerospace pressure differential indicator and switch category. Buyers can review related visual, electrical, visual-electrical and filter clogging indicator options under the same product family.
Send Drawing or Sample View Manufacturing Capabilities
FAQ
Can MH customize the signal pressure?
Yes. Signal pressure can be reviewed according to filter pressure drop, working pressure, burst pressure, medium and customer drawing requirement.
Is this product only for hydraulic filters?
No. Representative examples include hydraulic oil, lubricating oil, fuel, coolant and PAO applications. Final design depends on medium compatibility and working conditions.
Can MH manufacture from a sample if the drawing is incomplete?
A sample or photos can start the technical review, but formal production normally requires confirmed dimensions, pressure requirements, medium, temperature and inspection requirements.
What is the key purchasing risk for visual differential pressure indicators?
The main risks are incorrect signal pressure, sealing mismatch, insufficient pressure resistance, poor reset behavior and unsuitable material or seal selection for the working medium.
Need A Custom Visual Differential Pressure Indicator?
Send your drawing, sample or working-environment requirements. MH will review the pressure setting, medium compatibility, sealing, interface and manufacturing feasibility before quotation.
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