Hiwa Series 802 restrained flange adaptor, is a tensile resistant flange adaptor for PE and PVC pipes, it contains an end load resistant mechanism, that grips and seals onto PVC & PE Pipes to prevent the pipe pull off from the pipe system. Its suitable for use with water, drainage, sewage ...pipe systems, and the maximum working temperature is 80°C.
Size: DN40-DN315
Body: Ductile Iron GGG50,GJS500-7,GGG40,DIN1693 
Gland Ring: Ductile Iron GJS500-7 GGG40, DIN1693
Coating: RAL5017 Fusion Bonded Epoxy
Sealing Ring: EPDM to BS EN681+Brass Teeth
Washers: Dacromet Coated Steel, Grade 6.8
Nut: Dacromet Coated Steel, Grade 6.8
Bolts: Dacromet Coated Steel, Grade 6.8

You can refer to for detail specifications.