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couplings for grooved-end pipe
www.anvilintl.com 18
Fig. 7001
Standard Coupling The Gruvlok® Fig. 7001 Standard Coupling forms a fexible
grooved end pipe joint connection with the versatility for a
wide range of applications. Services include mechanical and
plumbing, process piping, mining and oil feld piping, and many
others. The coupling design supplies optimum strength for
working pressures to 1000 PSl (69 bar) without excessive
casting weight.
The fexible design eases pipe and equipment installation
while providing the designed-in beneft of reducing pipeline
noise and vibration transmission without the addition of
special components. To ease coupling handling and assembly
and to assure consistent quality, sizes 1" through 14" couplings
have two 180° segment housings, 16" through 24" sizes have four
90° - segment housings while the 28" O.D. and 30" O.D. couplings
have six 60° segment housings. The 28" O.D. and 30" O.D. are
weld-ring couplings.
MATERIAL SPECIFICATIONS
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 a Gruvlok
Representative for more information.
HOUSING:
Ductile Iron conforming to ASTM A 536, Grade 65-45-12 or Malleable
Iron conforming to ASTM A 47, Grade 32510.
COATINGS:
Rust inhibiting paint Color: ORANGE (standard)
Hot Dipped Zinc Galvanized (optional)
Other Colors Available (IE: RAL3000 and RAL9000)
For other Coating requirements contact a Gruvlok Representative.
GASKETS: Materials
Properties as designated in accordance with ASTM D 2000
Grade “E” EPDM (Green color code) NSF 61 Certifed
-40°F to 230°F (Service Temperature Range)(-40°C to 110°C)
Recommended for water service, diluted acids, alkalies solutions,
oil-free air and many chemical services.
NOT FOR USE IN PETROLEUM APPLICATIONS.
Fig. 7001 with
Flush Gap Gasket
(1" - 14")
Fig. 7001 with
Standard Gasket
Grade “T” Nitrile (Orange color code)
-20°F to 180°F (Service Temperature Range)(-29°C to 82°C)
Recommended for petroleum applications. Air with oil vapors and
vegetable and mineral oils.
NOT FOR USE IN HOT WATER OR HOT AIR
Grade “O” Fluoro-Elastomer (Blue color code)
-20°F to 300°F (Service Temperature Range)(-29°C to 149°C)
Recommended for high temperature resistance to oxidizing acids,
petroleum oils, hydraulic fuids, halogenated hydrocarbons and
lubricants.
Grade “L” Silicone (Red color code)
-40°F to 350°F (Service Temperature Range)(-40°C to 177°C)
Recommended for dry, hot air and some high temperature chemical
services.
GASKET TYPE:
Standard C Style
Flush Gap (1" - 14")
“EG” Style
LUBRICATION:
Standard Gruvlok
Gruvlok XtremeTM (Do Not use with Grade “L”)
WORKING PRESSURE, END LOAD, PIPE END SEPARATION &
DEFLECTION FROM CENTER LINE:
Based on standard wall steel pipe with cut or roll grooves in accordance
with Gruvlok specifcations. See technical data section for design factors.
GL-2.10