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couplings for grooved-end pipe
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Fig. 7003
Hingelok® Coupling
The Fig. 7003 Hingelok Coupling is specially designed for
applications requiring a quick connection and/or disconnection
of a pipe joint. The Fig. 7003 Hingelok Coupling is ideal for those
applications where frequent pipe removal is required for
maintenance or any other reason. Fig. 7003 Hingelok Coupling
provides for systemworking pressure ratings up to 300 psi (20.7 bar).
The Fig. 7003 Hingelok Coupling halves are permanently hinged
to provide an assembly that eases handling and installation.
The two coupling halves are hinged for ease of handling and
are secured by a cam-action handle. Sizes 1" to 4" use toggle
link plates and sizes 5" to 8" use a toggle bolt to attach the
cam-action handle to the housings. The cam-action locking
handle permits rapid installation without the need for
additional tools and maintains secure closure of the coupling
into the pipe grooves. Final assembly of the locking pin to the
Hingelok Coupling adds an extra measure of security required
in critical pipe joint applications.
MATERIAL SPECIFICATIONS
HOUSING:
Ductile Iron conforming to ASTM A 536, Grade 65-45-12.
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.
HANDLE:
Sizes 1" - 4": Cold Rolled Carbon Steel Handles
Sizes 5” - 8": Cast Ductile Iron Handles
LINKS:
Sizes 1" - 4": Cold Rolled Carbon Steel Links
Sizes 5" - 8": Heat Treated Steel Links
LOCKING PIN:
Locking Pin: Spring Steel
GASKETS: Materials
Properties as designated in accordance with ASTM D2000
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.
DO NOT USE GRUVLOK XTREME LUBRICANT WITH GRADE “L”
SILICONE GASKET.
GASKET TYPE:
Standard C Style
Flush Gap (1" - 8")
LUBRICATION:
Standard Gruvlok
Gruvlok XtremeTM (Do Not use with Grade “L”)
Sizes 1" - 4"
Sizes 5" - 8"
GL-2.10