A true multi-talent for every maintenance task: The MINIMESS® p/T 1620 is a combination test point which allows simultaneous measurement of pressure and temperature from a single shared measuring point. This may reduce the number of required measuring points by up to 50 percent. The combination test point is suitable for operating pressures up to 630 bar. Temperature detection directly within the flowing medium provides very quick response times.
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The MINIMESS® test point is a mechanically unlockable non-return valve that is used to access the hydraulic system for diagnostics in fluid circuits. The test point is a component part of the measurement and inspection technology and allows fast pressure and temperature measurement without system downtime. Coupling the connection side can be done under system pressure.
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Gaseous Hydrogen |
Minimess® Couplings – Series 1620 (M16×2) – rugged test & service ports up to 630 bar
Minimess® Series 1620 with M16×2 thread is the industry standard for leak-tight measurement, venting and filling points in hydraulics, pneumatics and HVAC/R. The couplings can be connected under pressure, couple/uncouple drip-free, and are ideal for mobile machinery, power packs, test rigs and fixed installations.
Features (series-dependent): working pressure up to 630 bar, materials zinc–nickel plated steel or 316/316L stainless steel, seals NBR/FKM/EPDM/PTFE, integrated check/isolating element, dust cap, color coding, and a wide range of adapters to 7/16″-20 UNF (DN2/DN4 microbore hoses), G 1/4 for gauges/transmitters and more.
ICS Schneider Messtechnik supports selection, adaptation, hose assembly, calibration and complete service kit configuration.
FAQ on Minimess® Series 1620 (M16×2)
Answers on specs, media, sealing, adapters, installation, safety, tightness and best practices.
What does “1620” indicate and where is it used?
“1620” designates the M16×2 interface. It’s widely used in industrial & mobile hydraulics, on test benches, at HVAC/R service points and in lubrication/air systems.
What pressure and temperature ranges are supported?
Depending on the variant up to 630 bar working pressure. Temperature typically −30…+100 °C, up to about +200 °C with FKM. Always check the specific datasheet.
Which media are suitable?
Hydraulic oils (mineral/synthetic), water–glycol, diesel/fuels, air/inert gases. For aggressive media choose stainless versions with PTFE seals.
Zinc–nickel steel or 316/316L stainless—how to choose?
Zinc–nickel is robust and economical for standard environments. 316/316L is recommended for corrosive atmospheres, offshore, food/pharma or chemical exposure.
Which sealing materials are available?
| Seal | Resistance | Typical use |
|---|---|---|
| NBR | Oils, diesel; −30…+100 °C | Hydraulic standard |
| FKM (Viton®) | Higher T, fuels/chemicals | High-temp/process |
| EPDM | Water/glycol, some steam | H2O/glycol systems |
| PTFE | Very broad chemical, high T | Process/chemicals |
Which adapters and hoses are offered?
Adapters to 7/16″-20 UNF (for DN2/DN4 microbore hoses), G 1/4 (BSPP), SAE and others. Hoses: DN2 up to 630 bar, DN4 up to 400 bar, plus PTFE-braided options for chemical/temperature demands.
Can I couple under pressure safely?
Yes—Series 1620 is designed for under-pressure coupling with very low spillage. Align axially and push to the stop until the audible/tactile click confirms engagement.
How do I install a 1620 port correctly?
- Clean sealing faces and fit the correct O-ring/face seal.
- Start the thread by hand, then tighten to the specified torque.
- For cylindrical BSPP/G adapters do not use tape on cone/face—sealing is via the O-ring/face.
How do I avoid leakage and contamination?
Use dust caps, keep coupler/plug clean, protect the sealing cone; remove dirt/moisture before coupling. Inspect O-rings regularly as wear parts.
How do I connect gauges & transmitters?
With adapters M16×2 → 7/16″-20 UNF (hose) or → G 1/4 for fixed gauges/0–600 bar sensors. For continuous monitoring include check/isolating and pulse damping.
Are color coding and service kits available?
Yes—color caps/rings for unambiguous point ID (e.g., circuit A/B, low/high). Service cases with 1620 couplings, hoses, gauges and adapters are available.
How many reuses are feasible?
Metal components are reusable many times. Replace O-rings when damaged or aged.
What about bleeding/draining and oil sampling?
Versions with an integrated needle allow controlled venting/draining and sampling. Always use a suitable hose and catch container.
Safety notes
- Operate only with approved media and within p/T limits.
- Wear PPE; consider pressure spikes.
- Leak-check before work; support/secure pressurized lines.
Common issues & quick fixes
- Seat leakage → inspect/replace O-ring, clean seat, verify torque.
- Hard to couple → check alignment, remove contamination, reduce Δp.
- Pressure drop → leak-check hose/adapter, inspect check valve.
Do you support selection & calibration?
Yes—we specify materials/seals, define adapters/hoses, supply factory/DAkkS calibration for gauges/sensors and can integrate IIoT gateways on request.