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8" (203.2 mm) Rigid Grooved Coupling

8" (203.2 mm) Rigid Grooved Coupling facilitates speedy and straight piping installations. This UL & FM-approved ductile iron coupling features an EPDM rubber gasket and two pairs of carbon-steel nuts and bolts for quick assembly.
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SKUNominal DiameterConstructionFinish
GGRC800 8" (203.2 mm) Ferritic Ductile Cast Iron (ASTM A536 Grade 65-45-12) with EPDM Rubber Gasket Paint Orange
Pipe Outside DiameterWorking PressureBolt SizeDimensions
8.625" (219.1 mm) 300 PSI (2.07 MPa) M16x85 9.961" (253 mm) Outside Diameter x 12.598" (320 mm) Maximum Width x 2.323" (59 mm) Thick
Thermafit Industries Part NumberAvailability
XGQT001219 Usually Ships Within 48 Hours

Product Description

8" (203.2 mm) Rigid Grooved Coupling forms a water-tight seal between two grooved pipes in fire sprinkler systems, standpipe systems, plumbing, HVAC, and water-based systems. Pipes joined by rigid grooved couplings behave like flanged or welded pipe, but can be installed significantly faster.

This UL and FM-approved 8" (203.2 mm) Rigid Grooved Coupling features a ductile iron body conforming to ASTM A536 Grade 65-45-12. The gasket is made from EPDM synthetic rubber, recognized as the most water-resistant rubber on the market today. Two pairs of carbon steel M16x85 nuts and bolts facilitate quick installation.

8" (203.2 mm) Rigid Grooved Coupling features built-in teeth that firmly grasp the pipe ends, facilitating straight pipe lays over short and long distances. Rigid couplings allow less than one degree of deviation from a straight line (angular deflection. This coupling offers a maximum working pressure of 500 PSI (3.4 KPa) depending on pipe diameter and thickness.


Grooved Fitting Dimensions

  • 0: 9.961" (253 mm)
  • H: 12.598" (320 mm)
  • L: 2.323" (59 mm)

Technical Documents

Click here to view the manual for this 8" (203.2 mm) Rigid Grooved Coupling.

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