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The C-4 Rigid Coupling is our standard coupling and is designed for rigid piping applications. The C-4 is specially designed to provide a rigid, locked-in pipe connection to meet the specific demands of rigid design steel pipe.
Unit of Measure

Specifications

Industry Standards/Certifications

NSF/ANSI 61

Type

Rigid Coupling

Style

Grooved

Nominal Size

2 in

Housing Material

Ductile Iron conforming to ASTM A-536, Grade 65-45-12

Coatings

Rust inhibiting paint Color: ORANGE

Gasket Material

EPDM

Gasket Type

Standard C Style

Bolt Material

SAE J429, Grade 5, Zinc Electroplated (standard)

Heavy Hex Nut

ASTM A563, Grade A, Zinc Electroplated (standard)

Coupling Bolts Size

3/8 x 2 1/4 in

Coupling Bolts Qty.

2

Lubrication

Standard Gruvlok, Gruvlok Xtreme™

Application

Recommended for wet and dry (oil free air) fire protection sprinkler systems. For freezing conditions, Gruvlok Xtreme™ Lubricant is required.

Min. Service Temperature Range

-40 ºF

Max. Service Temperature Range

150 ºF

Max. Working Pressure

300 psi

Max. End Load

1329 lb

Range of Pipe End Separation

0-1/32 in

Product Number

0890020373

UPC Code

69029194616

Weight

1.73 lb