The Fig. 7401 Rigidlok® Coupling from Gruvlok provides a rigid,
locked in pipe connection. Rigidity is attained simply; it is
The Fig. 7401 Rigidlok® Coupling is designed for use with roll
grooved or cut grooved standard weight and roll grooved
lightweight pipe, as well as with grooved-end fittings and valves.
The Rigidlok® Coupling maintains a rigid connection with
support and hanging in conformance with applicable ANSI
B31.1 Power Piping Code, ANSI B31.9 Building Service Pipe Code
as well as NFPA 13 sprinkler systems.
The Fig. 7401 Rigidlok® Coupling allows for working pressure
ratings to 750 psi (51.7 bar) when used on standard wall roll or
cut grooved pipe.
AnSI BoLtS & HEAVY HEX nutS:
Heat treated, oval neck track head bolts conforming to ASTM A 183
Grade 2 with a minimum tensile strength of 110,000 psi and heavy hex
nuts of carbon steel conforming to ASTM A 563 Grade A or Grade B, or
J995 Grade 2. Bolts and nuts are provided zinc electroplated as standard.
MEtrIc BoLtS & HEAVY HEX nutS:
Heat treated, zinc electroplated oval-neck track head bolts made of
carbon steel with mechanical properties per ISO 898-1 Class 8.8. Hex
nuts are zinc electroplated followed by a yellow chromate dip.
StAInLESS StEEL BoLtS & nutS:
Stainless steel bolts and nuts are also available. Contact us
for more information.
Ductile Iron conforming to ASTM A 536, Grade 65-45-12
Rust inhibiting paint Color: ORANGE (standard)
Hot Dipped Zinc Galvanized (optional)
Other Colors Available (IE: RAL3000 and RAL9000)