>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. 

Benefits summary

Flame-free connection – no hot works permit required 
No mess installation
Multiple use adaptor
Rotatable, demountable, reusable small fitting that can be installed in tight spaces
Suitable for connecting to ISO 228, ISO 7-1 and EN 10226-1 parallel female threads

Component materials

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


Drinking water
Hot and cold water systems
Heating systems
Oil-free compressed air

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 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


When professionally installed, used and maintained in accordance with >B< Oyster installation instructions, Conex Universal Ltd. guarantees that >B< Oyster fittings supplied by Conex Universal Ltd. will be free of material defects resulting from errors in manufacture, for twenty-five (25) years from the date of first purchase by an end user.  For full terms and conditions please refer to the Product Guarantee Statement