Press bushing - sleeve nut, 3/4" F x 18

Product detailed description

Press bushings are commonly used in residential and commercial buildings for connecting flexible plastic piping to rigid threaded components in central heating, hot water supply and sanitation systems. Installers and fitters often encounter situations where a flexible pipe such as ALPEX needs to connect to a rigid fitting with an external thread. This component ensures a leak-tight transition between dissimilar pipe types and materials.

The fitting is designed for use with standard ALPEX cross-linked polyethylene pipes and compatible with press tools of type B-F-TH. It allows secure and durable integration into systems requiring mechanical compression connections rather than soldering or gluing. The flat gasket ensures tightness while allowing axial movement during installation and thermal expansion.

Technical parameters

Material	Nickel-plated brass CW617N
Operating temperature	+120 °C
Nominal pressure	PN 10
Weight	0.069 kg
Code	510077
Brand	IVAR

The maximum operating temperature of +120°C and nominal pressure rating PN 10 determine the suitability for domestic hot water and heating applications. These parameters are critical when selecting fittings for systems where high temperatures and moderate pressures are expected. The material grade CW617N provides corrosion resistance suitable for wet environments.

Installation and connection

To install, align the press bushing with the prepared ALPEX pipe and insert it fully over the pipe end. Ensure the pipe extends beyond the internal shoulder inside the fitting body. Thread the external component onto the corresponding male thread until hand-tight. Use a calibrated press tool compatible with type B-F-TH to compress the sleeve around the pipe. Check that the tool applies even pressure and does not slip during pressing. Common errors include insufficient press force, misalignment of the tool jaws and failure to clean the pipe end before installation.

Compatibility and accessories

This press bushing is specifically intended for use with ALPEX cross-linked polyethylene pipes and requires a press tool of type B-F-TH for correct installation. The EPDM sealing ring and stainless steel sleeve ensure chemical compatibility with water and common pipe lubricants. No additional components are required unless specified by the system design or local regulations.

Technical background for designers

The fitting operates by mechanically deforming the stainless steel sleeve around the outer diameter of the ALPEX pipe during pressing, creating a rigid and leak-proof joint. The nickel-plated brass body resists oxidation and wear under normal operating conditions. The flat EPDM gasket compensates for minor surface irregularities and prevents leakage. The PN 10 rating indicates suitability for systems with moderate hydraulic loads, while the +120°C limit ensures safe operation in hot water circuits. Long-term performance depends on correct installation and avoidance of excessive mechanical stress from pipe movement or thermal expansion.

Service and operation

No routine maintenance is required for this fitting due to its solid construction and non-wearing components. Periodically inspect the system for signs of leakage or vibration-induced loosening. If disassembly is necessary, cut the ALPEX pipe and remove the fitting using appropriate cutting and pulling tools. Avoid prying or hammering to prevent damage to surrounding components.

Frequently asked questions

Can this fitting connect to other pipe types besides ALPEX?
No. This bushing is designed exclusively for ALPEX cross-linked polyethylene pipes and cannot be used with copper, steel or PEX pipes.

Is a specific press tool required for installation?
Yes. Only press tools of type B-F-TH are recommended to ensure correct deformation of the sleeve and proper sealing.

Can the sleeve be reused after removal?
No. Once pressed, the sleeve cannot be removed or repressed. A new fitting is required for any replacement or repair work.

What should I do if the fitting leaks after installation?
Disassemble the joint, inspect the pipe end and gasket for damage, and repress with a new sealing ring if necessary. Ensure the press tool is correctly calibrated and aligned.