>B< Oyster

>B< Oyster

>B< Oyster is a transitional adaptor for threaded fittings and valves. A range that is simple in concept, but versatile and efficient in practice, it can be used in a wide range of applications. These flame-free fittings have two EPDM O-rings that seal against the tube and the fitting, which means a reliable joint is achieved - a fast, clean, economical installation without additional sealing material. 

>B< Oyster threads comply with DIN EN ISO 228-1 (male threads cylindric) and are compatible with female threads according to DIN EN 10226-1 / ISO 7-1 and DIN EN ISO 228-1.

Benefits summary

Creates a thread in 4 steps
Flame-free connection
Quick and secure thanks to black EPDM-O-ring
DVGW certified
Rotatable, demountable, reusable
Perfect for tight spaces

Component materials

Red brass (CC499K-DW)
Nickel plated yellow brass (for non-drinking water applications)
Black EPDM O-ring 


Drinking water
Hot and cold water systems
Water based air-conditioning systems
Oil-free compressed air
Industrial and processing water

Operating parameters

Operating parameters of 16 bar at operating temperatures of up to 30°C
Operating parameters of 12 bar at operating temperatures of up to 65°C
Operating parameters of 10 bar at operating temperatures of up to 95°C



Approvals and certifications



ITB,PZH Poland
KIWA Netherlands 
PCT Russia
PZH Poland
SVGW Switzerland 
SZU Czech Republic
TYSK Ukraine


Red brass from 12mm x 3/8” to 54mm x 2”
Yellow brass from 10mm x 3/8" to 28mm x 1"
Nickel plated from 10mm x 3/8” to 22mm x 3/4”
Expansion coupler from 15 to 28mm

For further information please refer to our Technical Brochure.


For Conex Bänninger, product quality has top priority!

When professionally installed, used and maintained in accordance with the installation and maintenance instructions detailed in the technical brochure, Conex Universal Ltd. guarantees that all products as supplied by Conex Universal Ltd. will be free of material defects resulting from errors in manufacture. 

The warranty offered by Conex Bänninger corresponds to the national laws and standards of the origin country of purchase. Conex Bänninger is not liable for the incorrect or inappropriate use of the Goods. Please also refer to our terms and conditions.