Frequently Asked Questions

Frequently Asked Questions

Below are some frequently asked questions and answers in regards to our products. If you need more information, or would like to speak to a specialist, please submit arequestor see our submittal sheets.

  • What is the pressure rating for Husky couplings and the Anaco standard no-hub coupling?

    Anaco couplings are designed for drain, waste and vent, a gravity system. They are not pressure rated. However, Husky couplings conform to ASTM C 1540. The specified test pressure in the standard is 30 psi for 1 ½” – 5”, 27 psi for 6”, 15 psi for 8”, 9 psi for 10” and 6 psi for 12” and 15”. The Anaco standard no-hub couplings conform to CISPI 310 & ASTM C 1277. The specified test pressure in the standards are 20 psi for 1 ½” – 5”, 18 psi for 6”, 10 psi for 8”, 6 psi for 10”, 12” and 15”.

  • What kind of deflection can I expect out of the Anaco standard no-hub and Husky couplings?

    Husky couplings conform to ASTM C 1540. The deflection range in the standard is 1” per lineal foot. Anaco standard no-hub couplings conform to CISPI 310 & ASTM C 1277. The deflection range in those standards is ½” per lineal foot.

  • What is the required torque when installing Anaco standard no-hub and Husky couplings?

    The Husky couplings are designed to be installed with a pre-set torque wrench calibrated at 80 inch pounds to accommodate the 3/8” hex head screw of the SD 4000 and the 5/16” hex head of the HD 2000. The Anaco standard no-hub couplings are designed to be installed at 60 inch pounds. There is a very important torque sequence that needs to be followed when installing the Husky couplings. You can view an installation video by going to our home page and clicking on the installation video.

  • What is the temperature rating on the Anaco couplings?

    The gasket for both the Anaco no-hub and Husky couplings are made of Neoprene in accordance with ASTM C 564. The maximum temperature that neoprene will accommodate with continuous service is 203 degrees Fahrenheit with a maximum intermittent temperature of 212 degrees Fahrenheit.

  • Are the Anaco couplings fire protection rated?

    Questions about the ratings for Anaco couplings for cast iron joints in a firewall have been asked for years with the building code requirements for membrane and through penetrations. There are no problems using Anaco couplings in a rated wall for the code. The material in the wall is cast iron, a non-combustible material and the Anaco couplings have a neoprene sleeve, surrounded by a non-combustible stainless steel shield. Our gasket was tested and passed the 25/50 flame spread requirements. These joining methods have been in use since 1963, and while questions have been raised in the past, these materials will not melt away in a fire and leave a hole in the wall for the fire and smoke to spread.

  • Can I use an adhesive lubricant on the Anaco couplings?

    Anaco does not require or encourage the application of any type of adhesive lubricant with its couplings. However, we know that Black Swan NO-HUB sealant has been used with Anaco couplings in the past without any problems, often been used for hubless systems in cold climates where air testing is the only method allowed. The use of the sealant does not take the place of proper joint restraint. Some codes will not allow any lubricant to be applied to no-hub couplings, so before using any lubricant with no-hub couplings, check the applicable codes for restrictions.

  • Do I have to grind off the positioning lugs on the fittings to accommodate the Husky couplings?

    No. There was only one joining method in 1964 for hubless, the standard coupling. The position lug was placed on fittings to show the fitting was installed against the center stop of the gasket. Sizes 8” and larger do not have a lug under the gasket. The fittings are manufactured to CISPI 301 that includes dimensional tolerances for the location, height, width and length of the lug. Fittings that meet the standard will work without any additional installation requirements.

  • Can I use a Husky coupling to join PVC to cast iron?

    Joining a Husky coupling on your PVC piping system with cast iron has been done many times. Husky was made to provide a better joining method for cast iron hubless systems. We manufacture the coupling to fit cast iron using tolerances from the standards that cast iron are made to like CISPI 301 and ASTM A-888. Husky couplings are made to ASTM C 1540, which exceeds the transition coupling standard ASTM C 1460. Transition couplings to plastic are only 2.1” wide and have 2 bands. Husky couplings are 3” wide through 4” and have 4 bands, which provide an improved joining method at a higher PSI rating. You will not find any information in our brochures showing the connection to pipes other than cast iron. If you are connecting to cast iron, and the outside diameter of the PVC is within the tolerances of the cast iron sizes, it will work.

  • Can I use Husky couplings to join my hubless system underground?

    Husky SD 4000 couplings have been used underground for many years. Due to its outstanding performance and reliability, engineers and contractors are choosing Husky SD 4000 for use in the underground systems. Husky SD 4000 couplings provide a far more rigid joint that will still allow a higher deflection and psi rating. The corrosion resistance found in the SD 4000 is due to the higher grade type 304 stainless steel and a much thicker corrugated shield. When coupled with cast iron pipe, it will last as long as the system is connected.