Minimess® Couplings – Series 1615 (M16×1.5) – compact service & test ports up to 630 bar

FAQ on Minimess® Series 1615 (M16×1.5)

Answers on interface, pressure/temperature limits, media, sealing, adapters, installation, safety and best practices.

What does “1615” indicate and where is it used?

“1615” designates the M16×1.5 interface. It is common in industrial/mobile hydraulics, on test benches, at HVAC/R service points and in lubrication/air systems.

What pressure and temperature ranges apply?

Depending on the series up to 630 bar working pressure. Typical temperature range −30…+100 °C, up to about +200 °C with FKM. Refer to the specific datasheet for exact limits.

Which media are compatible?

Hydraulic oils (mineral/synthetic), water–glycol, diesel/fuels, air/inert gases. For aggressive media choose stainless versions with PTFE sealing.

Zinc–nickel steel or 316/316L stainless—how to choose?

Zinc–nickel is rugged and economical for standard environments. 316/316L is recommended for corrosive atmospheres, offshore, food/pharma or chemical exposure.

Which seal materials are available?

Which adapters and hoses can I use?

Adapters to 7/16″-20 UNF (for DN2/DN4 microbore hoses), G 1/4 (BSPP), SAE and more. Hoses: DN2 up to 630 bar, DN4 up to 400 bar, plus PTFE-braided options for chemical/high-temperature service.

Can it be coupled under pressure?

Yes—Series 1615 supports under-pressure coupling with very low spillage. Align axially and insert to the stop until the audible/tactile click confirms engagement.

How do I install a 1615 port correctly?

• Clean sealing faces; use the correct O-ring/face seal.
• Start the thread by hand, then tighten to the specified torque.
• For cylindrical BSPP/G adapters do not apply tape to the cone/face—sealing is via the O-ring/face.

How do I prevent 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?

Via adapters M16×1.5 → 7/16″-20 UNF (hose) or → G 1/4 for fixed gauges/0–600 bar sensors. For continuous monitoring add check/isolating and pulse damping.

Are color coding and service kits available?

Yes—color caps/rings for clear point identification (e.g., circuit A/B, low/high pressure). Service cases are available with couplings, hoses, gauges and adapters.

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 within the specified p/T limits and with approved media.
• 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, provide factory/DAkkS calibration for gauges/sensors and can integrate IIoT gateways on request.