Connector straight SiGMA-Li MZPZ251, 25 x 1 mm, male thread (GZ), for PEX piping

Straight connector SiGMA-Li MZPZ251 for PEX piping provides a compact mechanical transition between a 25 x 1 mm PEX pipe and a threaded fitting. The connector features a male outer thread (GZ) designed to mate with standard female threaded valves, adapters and appliances. It is intended for plumbing and heating installations where a dependable sealed connection between flexible PEX tubing and threaded components is required.

Advantages

The connector offers a simple, space-saving design that facilitates a direct connection from PEX pipe to threaded fittings without the need for additional adapters. Its straight form factor reduces flow disruption and simplifies installation in confined spaces. The male thread ensures compatibility with common female threaded plumbing components and supports a mechanically stable joint when assembled according to recommended practices.

Suitable for

• Connecting 25 x 1 mm PEX pipe to female threaded valves and fittings
• Domestic plumbing systems including potable water supply lines
• Heating circuits where PEX piping is used with threaded radiators or valves
• Retrofit or replacement work where a transition to a threaded appliance is required

Key specifications

• Type: straight connector for PEX piping
• Pipe size compatibility: 25 x 1 mm PEX
• Thread type: male outer thread (GZ) suitable for standard female threads
• Connection orientation: inline, straight
• Typical applications: plumbing and heating connections between PEX and threaded components

How to use

Prepare the PEX pipe by cutting it squarely and deburring the end. Slide any required compression ring or sleeve onto the pipe as specified for the connector design, then insert the pipe fully into the connector until it seats. Thread the connector's male end into the corresponding female fitting, applying appropriate thread sealant or tape if required by the installation standards. Tighten to the torque recommended for the mating components to ensure a sealed, mechanically secure joint. After assembly, test the system for leaks according to local plumbing codes.

Usage recommendations

Use with fittings and valves rated for PEX systems and compatible with 25 x 1 mm pipe dimensions; follow manufacturer and local code requirements for sealing, tightening and pressure testing to ensure safe operation in potable water and heating applications.