Manogauge manufactures direct-acting diaphragm pressure gauges designed for corrosive, viscous or hygiene-sensitive media where a conventional Bourdon tube would become blocked or damaged by process contact.
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ZX-05-1 · 0–60 kPa · ±1.6%
ZX-05-2 · 0–60 kPa · ±1.6%
ZX-04-R1 · 0–60 MPa · ±1.6%
ZX-04-R2 · 0–60 MPa · ±1.6%
ZX-01-R · 0–100 MPa · ±1.0 / 1.6%
A flexible diaphragm separates the process medium from the gauge movement. Pressure deflects the diaphragm, which transfers motion to the pointer via a linkage — keeping the medium fully isolated from the Bourdon tube and preventing blockage or corrosion of the measuring element.
Direct-acting diaphragm gauges in sizes 40–100 mm. Wetted parts in brass or stainless steel. Connection threads G, PT and NPT in 1/8 to 1/2 inch. Bottom or back connection. OEM dial artwork, custom ranges and special materials available on request.
Chemical and petrochemical dosing systems, food and beverage slurry lines, wastewater treatment, pulp and paper processes, pharmaceutical API handling and any medium that is viscous, crystallising, highly corrosive or hygiene-sensitive.
Final configuration still depends on medium, temperature, pressure, connection and documentation requirements.
| Item | Common options | Selection note |
|---|---|---|
| Pressure range | Low pressure to 40 bar, depending on diaphragm type | Confirm normal pressure, pressure peaks and overpressure margin before selecting the capsule or diaphragm element. |
| Dial size | 40 / 60 / 80 / 100 mm | Larger dials improve readability on skid packages and elevated pipe runs. |
| Wetted material | Brass, 304 SS, 316L SS, PTFE-lined or special alloy by RFQ | Material must be checked against medium name, concentration and temperature. |
| Connection | G, PT, NPT, flange or sanitary-adjacent connection by model | Connection standard controls whether the gauge can be installed directly or needs an isolating seal. |
| Documentation | Calibration record, hydrostatic test record, material certificate by order scope | KS / EN837-1 documents are confirmed by applicable model and destination market. |
For a sodium hypochlorite dosing skid, the buyer should not select only by pressure range. The RFQ should state chemical concentration, normal pressure, pulsation from the metering pump, pipe material and whether crystallisation occurs during shutdown.
Use the RFQ form when you have range, connection, quantity or drawings. Use WhatsApp when you only need a quick compatibility check before preparing the full purchase file.
A diaphragm gauge uses a diaphragm sensing element for low pressure. A diaphragm seal isolates a standard gauge from the process medium through a sealed diaphragm assembly.
They can be configured for many corrosive media, but material and seal design must be checked against the exact medium, concentration and temperature.
Send medium, concentration, temperature, pressure range, connection standard, installation position, required material and quantity.
MOQ for standard diaphragm gauge models is typically 10–50 units. Special diaphragm materials or custom process connections may have higher minimums. Send your requirement for a confirmed MOQ.
Yes. Sample diaphragm gauges are available. Submit your specification via the RFQ form and note your sample requirement — our team will confirm availability and lead time.
Route buyer traffic into downloadable PDF guides for selection, thread standards, materials, installation, troubleshooting and OEM customization.