Description
4″ IPS MIDCO PERMA GRIP Joint Restraint w/internal stiffener includes:
- one 4″ ductile iron gland
- one 4″ IPS bronze grip ring
- 4 – 3/4″ x 3-1/2″ bolts w/nuts
- one 4″ transition gasket
- one 4″ 304 stainless steel internal stiffener.
SPECIFY: SDR 11 or 13.5 or 17
MATL SPECS FOR MIDCO PERMA GRIP COMPONENTS: Glands – ASTM A 536 Grade 65-45-12 Ductile Iron and Epoxy Coated to 4 mil thickness. Series 3000 (Style 30) Grip Ring – C87850 Bronze. Series 4000 (Style 40) Grip Ring – ASTM A 536 Grade 80-55-06 Ductile Iron Heat Treated to 350-400 BHN. T-Bolts and Nuts – ASTM A 242. 304 stainless steel stiffener.