Page 30 - publication

couplings for grooved-end pipe
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Fig. 7010
Reducing Coupling
The Fig. 7010 Reducing Coupling makes it possible to directly
connect two different pipe sizes, eliminating the need for two
couplings and a reducing ftting. The specially designed reducing
coupling gasket with a center rib assures proper positioning of
the gasket and prevents the smaller pipe from telescoping into
the larger during assembly. Fig. 7010 Reducing Coupling allows
for working pressure ratings up to 500 PSI (34.5 bar).
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)
-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.
LUBRICATION:
Standard Gruvlok
Gruvlok XtremeTM (Do Not use with Grade “L”)
GL-2.10