Page 19 - GRINNELL Mechanical Grooved Piping Products EMEA

Grooved Couplings
Full contact between Figure 772 Coupling key and groove diameter
Material Specifications
Ductile Iron Housing Specifications
• ASTM A 536 – Standard specification for ductile iron castings, Grade 65-45-12
• Tensile strength, minimum 4481.6 Bar (65,000 psi)
• Yield strength, minimum 3102.6 Bar (45,000 psi)
• Elongation minimum 12%
• ASTM A 153 – Standard specification for
hot-dip galvanising
Bolt/Nut Specifications
• Metric: Carbon steel oval neck track head bolts (Gold colour coded) are heat treated and conform to the physical properties of ASTM F 568M with a minimum tensile strength of 760 MPa. Carbon Steel heavy hex nuts conform to the physical properties of ASTM A 563 M Class 9. Bolts and nuts are zinc-electroplated conforming to ASTM B 633.
• ANSI: Carbon steel oval neck bolts and nuts are heat-treated and conform to the physical properties of ASTM A 183 Grade 2 and SAE J429 Grade 5 with a minimum tensile strength of 7584 Bar (110,000 psi). Carbon Steel heavy hex nuts conform to the physical properties of ASTM A 183 Grade 2 and SAE J995 Grade 5. Bolts and nuts are zinc-electroplated conforming
to ASTM B 633.
• Stainless steel bolts and nuts are available upon request.
Coatings
• Red – Non-lead paint RAL 3000 (standard)
• White – Non-lead paint RAL 9010 (optional)
• Hot-Dipped, Zinc Galvanised (optional)
Additional Features:
• Standard industry groove does not require special tools.
• Backed by the industry’s best 10-Year Limited Warranty. Review terms and conditions of sale on www.grinnell.com.
GRINNELL Coupling Gasket Specifications
• Grade “E” EPDM gaskets have a Green colour code stripe identification and conform to ASTM D 2000 for service temperatures from -34°C to 110°C (-30°F to 230°F). They
are recommended for hot water not to exceed 110°C (230°F), plus a variety of dilute acids, oil free air, and many chemical services. They are not recommended for petroleum services. For low temperature and vacuum systems, a Tri-Seal Grade “E” EPDM gasket with a rigid coupling is recommended.
• Grade “T” Nitrile gaskets have an Orange colour code
stripe identification and conform to ASTM D 2000 for service temperatures from -29°C to 82°C (-20°F to 180°F). They are recommended for petroleum products, vegetable oils, mineral oils, and air with oil vapours.
• Grade “L” Silicone gaskets are Red colour code stripe and conform to ASTM D 2000 for service temperatures from -34°C to 177°C (-30°F to 350°F). They are recommended for air without hydrocarbons, or dry heat.
• Grade “O” Fluoroelastomer gaskets have a Blue colour code stripe and conform to ASTM D 2000 for service temperatures from -7°C to 149°C (+20°F to 300°F). They are recommended for oxidizing acids, petroleum products, hydraulic fluids, lubricants, and halogenated hyrdrocarbons.
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