MIFAB MI-QHUB Quick Hub No Hub Couplings

Product Overview

MIFAB® Series MI-QHUB no hub couplings are manufactured with Quick Hub gaskets made with neoprene and three sealing rings that meet the requirements of ASTM C564. These couplings are housed within a Type 301 stainless steel corrugated shield. The couplings are secured with Type 301 stainless steel clamps tightened with 5/16" Type 305 stainless steel hex head screws, providing the sealing force. MI-QHUB Series Couplings are tested and certified to ASTM-C1277, CISPI 310, NSF, CSA B70 and CSA B602 standards and are listed with IAPMO. They are also tested and certified by Intertek Testing Services to CAN/ULC S102.2 "Smoke Test." A patented Pipe Clamp is included for joining all types of pipe.

Function: Used to provide a positive and significant seal between no hub cast iron pipe and fittings. The patented sealing rings within the Quick Hub gasket ensure that the gasket remains within the shield during shipping and handling, allowing for a quick push-on installation onto the pipe without needing to remove and roll the gasket first.

Material Specifications

• Bands: Type 301 AISI stainless steel (Minimum tensile 165,000 psi).
• Eyelets: Type 301 AISI stainless steel.
• Gasket: Elastomeric compound meeting the requirements of ASTM C-564.
• Oil Immersion Test: 80% max. Volume change after immersion in IRM 903 for 70 hours at 212° F.
• Screw Housing: Type 304 AISI stainless steel.
• Screws: Type 305 AISI stainless steel, 5/16" Hex head / Shoulder.
• Shield: Type 301 AISI stainless.

Performance Specifications

• Requires a 5/16" hex head driver to tighten bolts to 60 inch lbs. min/max torque.
• The Quick Hub couplings are also tested and certified to the ASTM C1460 Standard to connect cast iron pipe to PVC and/or ABS pipe in the 1½", 2", 3", 4", 6" and 8" size range.
• 1 1/2" - 6" MI-QHUB models are tested and certified by IAPMO R & T to be used to connect PVC pipe to PVC pipe.

Physical Properties

*Compression set after 22 hrs. at 158°F

**Condition after exposure to 1.0 pphm ozone in air for 100°F-Loop-mounted sample approximately or 20% elongation.

***Change in volume after 70 hrs. immersion in ASTM oil IMR903 at 212°F.

****Change in original properties after 96hrs. at 158°F

*****Wt. Change, 20% maximum 7 days at 158°F

Product Visuals and Installation Guidance

The MI-QHUB coupling features three sealing rings on the gasket, which outperform couplings with only two sealing rings.

Installation Torque Sequence:

• Size 12": Tighten bands alternatively to minimum 60-inch pounds torque in the following sequence: 3, 2, 1 - 4, 5, 6.
• Sizes 5"-10": Tighten bands alternatively to minimum 60-inch pounds torque in the following sequence: 2, 1 - 3, 4.
• Sizes 2"-4": Tighten bands alternately to minimum 60-inch pounds torque, in the following sequence: 1-2.

All couplings utilize a 5/16" hex head and have a band width of 9/16".

Model Specifications Table

Important Information

CALIFORNIA PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

MIFAB reserves the right to make changes in material and design without formal notice and obligation.

For inquiries, contact MIFAB at USA: 1-800-465-2736 or visit www.mifab.com. Canadian customers can call 1-800-387-3880.