Threaded Adapter (1/2″M–1/2″M) P-14-3 SHPI

Technical Specifications

*Values shown are typical for brass pneumatic fittings of the SHPI series in this class; for pressure-critical applications, please confirm exact ratings with an Acvatron manager for your specific task.

Advantages and Strengths

1. Brass body instead of die-cast aluminum — brass resists condensate and oil aerosol exposure typical of compressed air lines and is not prone to the corrosion cracking common in cheaper aluminum analogues.
2. Nickel-plated coating — reduces the risk of thread seizing during frequent installation/removal and extends service life in humid workshop environments.
3. Precise thread geometry — SHPI fittings are manufactured with tight tolerance control, eliminating leaks at the joint without excessive sealant or PTFE tape.
4. Application versatility — suitable for both pneumatic and low-pressure water lines, reducing the range of spare parts a customer needs to stock.
5. In-stock availability at Acvatron in Chișinău — the part ships without waiting for a supplier order, which is critical during unplanned line downtime.

Application Areas

• Assembly and connection of receivers, dryers, and filters in compressor stations
• Connecting pressure gauges, safety valves, and check valves
• Building compressed air mains on production lines
• Pneumatic tools and machine tool pneumatic automation
• Repair and modernization of existing piping assemblies where extending or joining an identical thread is required

Expert Opinion

Expert Opinion: Vitali Bolucevschi, Chief Engineer, Acvatron, 15 years in the field
“In practice, the P-14-3 adapter fails most often not because of its own service life, but due to over-tightening during installation — brass doesn’t tolerate excessive torque on demountable threaded joints. I recommend assembling the fitting with a wrench to just the required amount, without ‘tightening a bit extra for safety,’ and always using PTFE tape or an anaerobic thread sealant — this eliminates micro-leaks of air that aren’t always audible but do reduce the compressor station’s efficiency.”

SHPI products are manufactured in accordance with the requirements of the ISO 9001 quality management system.

FAQ

Can the P-14-3 be used for water, not just air?
Yes, the brass body and nickel-plated coating allow use in low-pressure water lines, not just pneumatic systems.

What sealant should be used during installation?
PTFE tape or an anaerobic thread sealant; liquid silicone sealants are not recommended for pressurized threaded joints.

Is the P-14-3 suitable if the threads on the two sides of the line have different diameters?
No — the P-14-3 connects only identical 1/2″-1/2″ threads. For a different diameter transition, the SHPI lineup includes P-14-1 (1/2″-1/4″), P-14-2 (1/2″-3/8″), and P-14-4 (1/2″-3/4″).