HEAVY DUTY NO HUB COUPLING

Specification: Heavy duty no hub couplings are manufactured with natural gaskets that meets the requirements of ASTM C564 housed inside a Type 304 stainless steel corrugated shield. Four (1-1/2” through 4” size), SIX (6” through 12” size) Type 304 stainless steel clamps tightened with 3/8” Type 304 stainless steel hex head screws surround the shield to provide the sealing force. Heavy duty no hub Couplings are tested and certified to the ASTM C1540 and CISPI 310 Standards. Maximum test pressure: 4.3 PSI (29.6KPA)

Function: Used to provide a positive and significant seal between no hub cast iron pipe and fittings.

Material Specifications:
Bands - Type 304 AISI stainless steel (Minimum tensile 165,000 psi).
Eyelets - Type 304 AISI stainless steel.
Gasket – Natural rubber - meeting the requirements of ASTM C564.
Screw Housing - Type 304 AISI stainless steel.
Screws - Type 304 AISI stainless steel, 3/8” Hex head / Shoulder.

Shield - Type 304 AISI stainless