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hdpe couplings
Introduction
Couplings
Outlets
Fittings
Val
ves &
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ries
HighPressure
Advanced CopperMethod (IPS)
DI-LOK
®
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Plain-EndFittings
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Data
Master Format3 Part Specs.
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www.anvilintl.com 133
FIG. 7312
HDPE Flange Adapter
The Gruvlok® Figure 7312 forms a cost-effective, easy-to-
assemble mechanical joint between HDPE (high density
polyethylene) pipe and fttings and ANSI Class 125 or Class 150
piping components without the need for costly fusion
equipment. The fanged couplings are designed for wall
thickness’ SDR 32.5 to 7.3 HDPE pipe and fttings conforming to
ASTM D 2447, D 3000, D 3035, or F 174. Each coupling uses two
bolts to drive the sharply machined housing teeth into the
outside of the pipe. The teeth are arranged in two banks, each
bank consisting of at least three rows of spiral teeth that
effectively grip the pipe, providing a secure mechanical joint
with pressure capabilities exceeding that of the HDPE pipe itself.
The banks of teeth are positioned away from the gasket,
enhancing the sealing ability of the gaskets throughout the
entire operating temperature range.
material specifications
HOUSING:
Ductile Iron conforming to ASTM A 536, Grade 65-45-12
COATING:
Rust inhibiting paint – color: orange
Other Colors Available (IE: RAL3000 and RAL9000)
For other Coating requirements contact a Gruvlok Representative.
ANSI BOLTS & HEAVY HEX NUTS:
Heat treated, zinc electroplated, carbon steel oval-neck track bolts
conforming to ASTM A 183. Zinc electroplated heavy hex nuts of carbon
steel conforming to ASTM A 563 Grade A or Grade B, or J995 Grade 2.
GASKETS: Properties in accordance with ASTM D 2000
Grade E EPDM (Green color code)
Service Temperature Range: -30°F to 230°F (-34°C to 110°C).
Recommended for water service, dilute acids, alkaline solutions,
oil free air and many chemical services.
NOT FOR USE IN PETROLEUM APPLICATIONS.
Grade T Nitrile (Orange color code)
Service Temperature Range: -20°F to 180°F (-29°C to 82°C).
Recommended for petroleum applications, air with oil vapor,
vegetable and mineral oils.
NOT FOR USE WITH HOT WATER OR HOT AIR.
For specifc chemical applications, reference the Gruvlok Gasket
Recommendations section of the Gruvlok catalog.
WARNING:
1. Gruvlok products for HDPE pipe must be installed using Gruvlok XtremeTM
Temperature Lubricant.
2. The gasket temperature rating may exceed the manufacturer temperature
rating for the HDPE pipe. Consult the HDPE pipe manufacturer for the
temperature and pressure ratings.
GL-2.10