Presentation on theme: "The idea evolved from two different contractor customers who shared with us a better way to perform hydrostatic testing of DWV piping system. Two different,"— Presentation transcript:
The idea evolved from two different contractor customers who shared with us a better way to perform hydrostatic testing of DWV piping system. Two different, yet related approaches of hydrostatic testing: One involved a modification to a standard cleanout tee The other involved a reusable test manifold/sanitary tee 1 Contractor Safety The Mold Liability - due to water spilling inside the chase Reliability of testing
The most common way of performing hydrostatic testing involves the use of inflatable plugs. Remove cleanout plug from stack cleanout tee. Insert inflatable plug and inflate to seal off the stack just above the cleanout opening. All floor drain lines are sealed in a similar manner. All lavatory, urinal and water closet lines are sealed. The system is filled with water until water reaches the highest elevation. System must hold pressure for 15 minutes to pass. Test is usually performed in the presence of an inspector who verifies the system. 2
However, as simple as this test method appears there are some common problems associated with it. Inflatable plugs are unreliable - Leaks require system re-test Removal of inflatable plugs - Spilling of water inside the chase - Soaking the person removing the inflatable plug Spilling of water inside the chase - Increases the risk of mold - Serious liability issue for the contractor 3
Designed to be used in the sanitary DWV piping stack as a cleanout tee with the additional function of a test tee for hydrostatically testing the piping system within high-rise buildings. Replaces need for an unreliable inflatable plug within the main stack to test the piping system. Internal threading – allows the stack to be closed off by installing a raised hex head plug (by others). Test port – allows the filling and draining of the piping system. 4 Test Port with Raised Head Plug (Regularly Furnished) Countersunk Taper Thread Bronze Plug (Regularly Furnished) Fig. No. 4505Y, No- Hub Model Cleanout and Test Tee
5 Duco cast iron cleanout tee with internal threading, ½ NPT test port with raised head plug and countersunk taper thread bronze plug. Hub & Spigot and No-Hub outlets. Internal Threading for Test Plug use. ½ NPT Test Port with Raised Head Plug. Spherical opening for better hand access. Available in 3, 4 and 6 pipe sizes.
6 Note: The Boss Tee can be used to test the piping system in the customary manner by installing a plug into the internal threading and filling the piping from the top. Remove cleanout plug at face of tee. Thread a raised hex head plug (by others) into the internal threading. Remove plug from test port. Thread ½ NPT nipple with boiler drain valve into the port. Pressure gauge may be installed before the boiler drain valve. Connect water hose to the boiler drain valve and water supply to fill piping. Boiler drain valve must be in the open position. When piping is full of water - shut off the water supply and close the boiler drain valve. When testing is complete - disconnect the water hose from the water supply and place in stack, floor drain or other acceptable drainage point and open boiler drain valve to drain piping. When piping is completely drained - reverse steps to install the cleanout plug.
SAFETY – contractor not required to remove inflatable plug from inside of stack with 5 -15 psi pressure just upstream of the plug. REDUCES THE CHANCE OF MOLD – due to water spilling inside the chase. CONTROLLED TESTING ENVIRONMENT – provides contractor with effective means of controlling the filling and draining of piping system. RELIABILITY – better testing results because of reliable closure of the stack. TIME & MATERIAL SAVINGS – eliminates the inflatable plug in the vertical stack and the time to get it to seal properly. EFFICIENT – test up to 3 floors at a time. The inspector can use the gauge to verify pressure in the line. LARGER, SPHERICAL OPENING in the fitting allows for easy hand access for line testing/inspection/cleaning. CLEANOUT TEE REMAINS IN THE STACK after testing to be used for future maintenance and testing. 7