IDEAL® No-Hub Couplings HD
No-Hub Coupling HD Features:
The distinctive green shield quickly identifies the IDEAL Heavy-Duty HD Couplings and makes it easier for inspectors.
3/8" hex-head screw applies 80 in-lbs. of installation torque to the band/shield assembly. Boasts an ultimate torque rating exceeding 100 in.-lbs. Heavier gauge stainless steel.
Our unique shield design employs bi-directional corrugations for maximum transfer of pressure from the clamps to the gasket. This patented* shield design adjusts to differences in the circumference and outside diameters of the pipes being joined. This eliminates gasket wrinkling and thereby eliminates leak paths. These bi-directional corrugations also create sealing pressure in both parallel and transverse patterns on the gasket and pipe. This works to avoid "pull out" failures and provides a positive, reliable seal.
The heavy-duty coupling mates utilizes a specially beaded gasket that mates with the shield and clamping forces for superior sealing pressure and holding power. IDEAL gaskets comply with ASTM C564.
Floating eyelets fasten the clamps to the shield, allowing the clamp band and shield to move independently. This freedom prevents the shield from crimping during tightening, which can lead to leakage later on.
IDEAL clamps feature a one-piece screw housing that mechanically interlocks the housing to the band. This design eliminates leak paths that can occur in staked or welded clamps.
Description: Couplings consist of gasket and shield assemblies. The shield assemblies have four or six clamps depending on the size. The clamps are fastened with eyelets to the bi-directional corrugated shield.
Materials: Steels used in couplings are stainless steels. Shields, bands and housings are AISI 304. Screws and eyelets are AISI 305. Gaskets are neoprene rubber.
Specifications: Couplings conform to CISPI 310, Factory Mutual FM 1680. Couplings comply with ASTM C564, ASTM 1277, IAPMO file #3198, Commonwealth of Massachusetts CMR-248 and City of New York MEA 253-98-E. Gaskets are made from an elastomeric compound that meets the requirements of ASTM C564.
U.S. Patent No. 5,431,458