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high pressure systems
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HIGH PRESSURE COUPLINGS
FIG. 7004 HPR®
Coupling
The Gruvlok Fig. 7004 HPR is designed to provide
the versatility of a grooved joint while providing a
connection for rigid pipe joint applications.
The Fig. 7004 HPR coupling permits working pressure
ratings up to 1200 psi (82.8 bar).
This coupling is also suited for lower pressure
systems which experience pressure pulses. Systems
used for high pressure auto and truck washes will
beneft from the increased pressure capability.
Working Pressure & End Load values are based on
grooved standard wall pipe.
Fig. 7004 HPR provides a basically rigid joint and
does not allow for expansion or contraction. Painted
couplings are green.
NOTE: Sizes 2" - 6" when used with a cast fg. 7050 ftting the UL/FM pressure is limited
to 500 psi.
NOTE: Fig. 7004 HPR can be used with EG fttings as a commercial joint only.
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.
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) 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.
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 (2" - 12")
LUBRICATION:
Standard Gruvlok
Gruvlok XtremeTM(Do Not use with Grade “L”)
GL-2.10