Stainless Steel Test Point Fittings M16x2 | BSPP ED Seal ISO 1179-2 | Fitsch

Stainless Steel Test Point Fittings: ISO 15171-2 M16x2 with BSPP ED Seal (ISO 1179-2)

Fitsch has rolled out its latest line of stainless steel test point fittings, designed specifically for heavy-duty hydraulic diagnostics and pressure monitoring. These smart little ports let you hook up pressure gauges, test hoses, or fluid sampling gear while the system is running at full blast. You don't need any special tools, and you definitely don't have to shut down your machinery just to take a reading.

We build these to strictly match the ISO 15171-2 standard. That means the diagnostic side uses the standard M16x2 thread (commonly called Test 20). On the other side, the port stud features a parallel BSPP thread with a captive, elastic soft seal (ED seal) that meets ISO 1179-2 Type E requirements. If you're screwing these into standard flat-face BSPP ports, you get a completely leak-free seal every single time.

Quick Technical Breakdown

• Diagnostic Port: Fully compliant with ISO 15171-2 (M16x2 standard test thread).

• Stud Connection: ISO 1179-2 Male BSPP thread with a heavy-duty NBR or Viton ED seal.

• Material: High-grade 316L stainless steel for maximum protection against rust and chemicals.

• Working Pressure: Handles system pressures up to 630 Bar (9,137 PSI).

• Coupling Under Pressure: Safely connects under pressure up to 400 Bar (5,800 PSI).

Swap Them Straight Into Your Existing Setup

You don't need to overthink compatibility. Fitsch stainless steel test point adapters are machined to tight tolerances so they can act as direct, drop-in replacements for the big European brands. If your shop already uses diagnostic hoses and pressure gauges from the following systems, our fittings will pair with them seamlessly:

• STAUFF: 100% interchangeable with the STAUFF Test 20 (SMK20 series).

• HYDROTECHNIK: Fits perfectly with the classic Minimess 1620 series.

• CEJN: Matches up smoothly with Press-Check 162 series nipples.

• EMB / VOSS / PARKER: Direct crossover for standard diagnostic port setups.

Why Fitsch Built Them Differently

We know hydraulic systems take a beating from constant vibration and pressure spikes, so we don't cut corners on the manufacturing process:

• Threaded Closure (No Cheap Crimping): A lot of standard fittings on the market use mechanical crimping to squash the internal pieces together. Over time, heavy vibration makes them loose, leading to micro-leaks. Fitsch test points are assembled using a threaded internal nipple design. This creates a solid mechanical lock that won't budge, even under severe vibration.

• Anti-Vibration Metal Cap: Every fitting comes with a self-locking metal cap. It features an integrated internal O-ring that seals out dirt, moisture, and saltwater, while keeping the cap firmly in place when the machine shakes.

• True 316 Stainless Steel: We use genuine 316 stainless steel to ensure these fittings stand up to harsh environments like offshore drilling rigs, marine shipping, chemical plants, and washdown-heavy food processing lines.

• Leak-Free Valve Mechanism: The internal check valve uses a high-precision piston or ball design that snaps shut instantly, giving you zero fluid loss when you disconnect your testing equipment.

Product Size Chart & Ordering Details

The following table covers our standard production run for the M16x2 test point fittings featuring ISO 1179-2 male BSPP studs and integrated ED seals: