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couplings for grooved-end pipe
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Fig. 7011
Standard Coupling
The Gruvlok® Figure 7011 Standard Coupling is a fexible coupling designed
to join roll grooved or cut grooved 30" O.D. pipe for a wide range of
applications, including Commercial/Industrial Construction, Mining,
Process Piping and many others. This coupling’s operating temperature
ranges from –40°F to 230°F (-40°C to 110°C) with the Grade E EPDM gasket
and –20°F to 180°F (-29°C to 82°C) with the Grade T Nitrile gasket. The
operating pressure ranges 15" of Hg. vacuum to 300 psig on standard wall
steel pipe.
MATERIAL SPECIFICATIONS
HOUSING DESIGN:
This six-segment coupling’s housing is cast in ductile iron per ASTM A 536 Grade
65-45-12. Each housing segment is machined to assure a close dimensional ft with
pipe ends that are prepared in accordance with Gruvlok “Large Diameter Roll and
Cut Groove Specifcations.”
GASKET DESIGN:
The gasket design is a “C” Style cross section and features a larger cross section to
provide optimal sealing throughout the range of pipe dimensional variations and
operating conditions. The gasket is available in EPDM and Nitrile, to facilitate use
in a wide range of applications. For Gruvlok gasket material recommendations see
the Gruvlok catalog.
BOLTS & HEAVY HEX NUTS:
Heat treated, oval neck track bolts of carbon steel conforming to ASTM A 183
Grade 2, with a minimum tensil strength of 110,000 psi and heavy hex nuts of
carbon steel conforming to ASTM A 563. Bolts and nuts are zinc plated per ASTM
B 633 as standard.
PIPE END PREPARATION:
Pipe grooving is simple, easy and quick. It is critical that the pipe ends be prepared
in accordance with the Gruvlok “Large Diameter Roll and Cut Groove Specifcations.”
For roll grooved pipe, grinding the weld seam on the interior and exterior of the
pipe may be required. Not performing this operation may result in improper
assembly of the coupling, gasket leakage and damage to the roll grooving machine .
GL-2.10