Page 102 - publication

high pressure systems
www.anvilintl.com 102
FIG. 7004 EG®
End Guard® Coupling
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 A563 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.
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.
HOUSING:
Ductile Iron conforming to ASTM A 536, Grade 65-45-12.
COATINGS:
Rust inhibiting paint Color: Green (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)
-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.
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.
GASKET TYPE:
“EG” Style
LUBRICATION:
Standard Gruvlok
Gruvlok XtremeTM(Do Not use with Grade “L”)
The Gruvlok Fig. 7004EG Coupling uses the specially designed “End
Guard” gasket with “EG” grooved pipe. The “EG” gasket has a center
rib which extends between the pipes to provide for pipe end
protection which makes it ideally suited for internally lined or
coated pipe applications.
The Fig. 7004EG Coupling permits working pressure ratings up to
2500 psi (172.4 bar).
Working Pressure and End Load values are based on “EG” cut
grooved extra heavy steel pipe. Fig. 7004EG provides a basically
rigid joint and does not allow for expansion or contraction.
Beveled end pipe should not be used with “EG” gaskets. Painted
couplings are green.
GL-2.10