Backing Rings / Loose Flanges
Backing Rings / Loose Flanges are used for easy assembly of pipes systems and tank connections. The Backing Ring (Loose Flange) and the Stub Flange form a dismountable joint for future disassembly and allow for easy alignment. Composite Backing Rings are non conductive and a good, competitive alternative for aluminium, galvanized steel, stainless steel and thermoplastic products. Conductive Backing Rings can be manufactured on request.
Advantages of Rotec flanges
- High quality through advanced production processes.
- Quick delivery through efficient production and warehousing at site.
The dimensions and the performance of our Backing Rings comply with the safety standards for each particular pressure class. Various internal diameters are available to match all types of pipe. Backing Rings are available in DIN PN 10, BS NP 10 and NFE 29-222; DIN PN 16, BS NP 16 and NFE 29-223; ASA 150 and ASA 300.
GRV/SMC - Sheet Moulding Compound
GRV/SMC Backing Rings in glass reinforced vinyl ester resin are being manufactured by hot pressing. Available in different internal diameters to meet Stub Flange dimensions for GRP pipes (DIN 16966) as well as PE, PP and PVC pipe systems (DIN 16963). The GRV/SMC Backing Rings are light weight and resistant to weathering and a wide range of chemicals. GRV/SMC Backing Rings are available from DN 15 up to DN 300 mm, with pressure ratings up to 16 bars.
RTM - Resin Transfer Moulding
RTM Backing Rings in glass reinforced vinyl ester resin are being manufactured by RTM. Available in different internal diameters to meet Stub Flange dimensions for GRP pipes (DIN 16966) as well as for PE, PP and PVC pipe systems (DIN 16963). Currently available from DN 200 up to DN 1400 mm, with pressure ratings up to 25 bars.