AVK launches encapsulation collars for under-pressure pipe repair

Hydro-Cos, our new member of the AVK Group, has developed a wide range of universal and dedicated encapsulation collars, and can also offer completely customised solutions for any leak. 

The standard encapsulation collars are made of fabricated carbon steel with fusion bonded epoxy coating, and the coating as well as the rubber seals in contact with water are WRAS approved. They are designed with flange outlet suitable for hot tapping and drainage of water, and air vent for the release of air as the last step of the installation. Lifting eyes are integrated in the reinforcing plates. The range includes three main designs:

Hydro Stop universal encapsulation collars for socket/pipe repair

Hydro Stop universal encapsulation collars are suitable for connecting pipes of different pipe materials. They offer 30 mm tolerance on the outside pipe diameter up to DN450 and 40 mm from DN500. The wide tolerance gives great flexibility, if the pipe OD has not been measured correctly, and a safe installation even in case of oval or damaged pipes. They allow for angular deflection of up to ±4° before or after installation.

Hydro Fast dedicated encapsulation collars for socket/pipe repair

Hydro Fast encapsulation collars have a tolerance of up to 10 mm on the outside pipe diameter and they are dedicated to a specific pipe material. The lightweight compact design is ideal for fragile pipes and limited space on site, and they allow for angular deflection of up to ±6° before or after installation offering great flexibility.

Hydro Smart dedicated socket encapsulation collars for small pipe diameters

Hydro Smart dedicated socket encapsulation collars can be installed by one operator, which is advantageous where space is limited. They do not have the flanged outlet, but otherwise they are quite similar to Hydro Fast collars. 

In addition to the substantial standard range of up to DN2000, the collars can be delivered with stainless steel body and/or stainless steel fasteners, for higher pressure ratings, up to DN3000, and even in a customised design.

For more details please refer to our insights page, where you will find links to interesting cases and our brochure, or to the product pages via the links below.

• Hydro Stop universal socket encapsulation collars with shaped body, AVK series 8001/0.
• Hydro Stop universal pipe encapsulation collars with straight body, AVK series 8001/2.
• Hydro Fast dedicated socket encapsulation collars with shaped body, AVK series 8002/0.
• Hydro Fast dedicated pipe encapsulation collars with straight body, AVK series 8002/2.
• Hydro Smart dedicated socket encapsulation collars with shaped body, AVK series 8003/0.